/* ===== CSS Variables — Sepia/Warm default ===== */
:root {
    --font: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-read: 'Noto Serif', Georgia, serif;
    --bg: #faf8f5;
    --bg-subtle: #f3efe8;
    --surface: rgba(44,36,23,0.04);
    --surface-hover: rgba(44,36,23,0.07);
    --surface-card: #fff;
    --surface-card-hover: #fffdf9;
    --border: #e5ddd2;
    --border-focus: rgba(196,149,106,0.5);
    --text: #2c2417;
    --text-secondary: #6b5e4f;
    --text-muted: #9a8d7e;
    --accent: #c4956a;
    --accent-2: #b38358;
    --accent-glow: rgba(196,149,106,0.2);
    --green: #2ea043;
    --green-soft: rgba(46,160,67,0.1);
    --orange: #d97706;
    --orange-soft: rgba(217,119,6,0.1);
    --danger: #ff6b6b;
    --gradient-btn: linear-gradient(135deg, #c4956a, #b38358, #a07248);
    --gradient-btn-hover: linear-gradient(135deg, #b38358, #a07248, #8d633c);
    --radius: 12px;
    --radius-lg: 20px;
    --shadow: 0 1px 3px rgba(44,36,23,0.06), 0 4px 12px rgba(44,36,23,0.08);
    --shadow-glow: 0 0 20px var(--accent-glow);
    --ease: cubic-bezier(0.25, 0.1, 0.25, 1);
}
.bg-orb { opacity: 0.06 !important; }
.bg-orb-1 { background: radial-gradient(circle, #c4956a, transparent 70%) !important; }
.bg-orb-2 { background: radial-gradient(circle, #d4a87a, transparent 70%) !important; }
.bg-noise { opacity: 0.012 !important; }
/* Dark theme */
[data-theme="dark"] {
    --bg: #1a1814;
    --bg-subtle: #221f1a;
    --surface: rgba(255,255,255,0.04);
    --surface-hover: rgba(255,255,255,0.07);
    --surface-card: rgba(255,255,255,0.06);
    --surface-card-hover: rgba(255,255,255,0.09);
    --border: rgba(255,255,255,0.08);
    --border-focus: rgba(196,149,106,0.4);
    --text: #e8e2d8;
    --text-secondary: rgba(232,226,216,0.6);
    --text-muted: rgba(232,226,216,0.3);
    --accent: #c4956a;
    --accent-2: #d4a87a;
    --accent-glow: rgba(196,149,106,0.25);
    --green: #4ade80;
    --green-soft: rgba(74,222,128,0.12);
    --orange: #fb923c;
    --orange-soft: rgba(251,146,60,0.12);
    --danger: #ff6b6b;
    --gradient-btn: linear-gradient(135deg, #c4956a, #b38358, #a07248);
    --gradient-btn-hover: linear-gradient(135deg, #d4a87a, #c4956a, #b38358);
    --shadow: 0 4px 24px rgba(0,0,0,0.3), 0 0 0 1px var(--border);
    --shadow-glow: 0 0 30px var(--accent-glow);
}
[data-theme="dark"] .bg-orb { opacity: 0.15 !important; }
[data-theme="dark"] .bg-orb-1 { background: radial-gradient(circle, #c4956a, transparent 70%) !important; }
[data-theme="dark"] .bg-orb-2 { background: radial-gradient(circle, #8b6914, transparent 70%) !important; }
[data-theme="dark"] .bg-noise { opacity: 0.025 !important; }

/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
.hidden { display: none !important; }
html, body {
    height: 100%;
    overflow: hidden;
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
    background: rgba(255,255,255,0.12);
    border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.2); }
[data-theme="light"] ::-webkit-scrollbar-thumb { background: rgba(0,0,0,0.12); }
[data-theme="light"] ::-webkit-scrollbar-thumb:hover { background: rgba(0,0,0,0.2); }

/* ===== Background Ambient ===== */
.bg-ambient { position: fixed; inset: 0; z-index: 0; pointer-events: none; overflow: hidden; }
.bg-orb { position: absolute; border-radius: 50%; filter: blur(100px); opacity: 0.35; animation: orbFloat 20s ease-in-out infinite alternate; }
.bg-orb-1 { width: 600px; height: 600px; background: radial-gradient(circle, #6366f1, transparent 70%); top: -200px; left: -100px; }
.bg-orb-2 { width: 500px; height: 500px; background: radial-gradient(circle, #a855f7, transparent 70%); bottom: -150px; right: -100px; animation-delay: -7s; }
@keyframes orbFloat {
    0% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(30px, -20px) scale(1.05); }
    100% { transform: translate(-20px, 20px) scale(0.95); }
}
.bg-noise {
    position: fixed; inset: 0; z-index: 0; pointer-events: none; opacity: 0.025;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
    background-repeat: repeat; background-size: 256px;
}

/* ===== Flex column layout for safe-area ===== */
body {
    display: flex;
    flex-direction: column;
    height: 100%;
    margin: 0;
}

/* ===== Header ===== */
.writer-header {
    flex-shrink: 0;
    min-height: 52px;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: env(safe-area-inset-top, 0px) 16px 0;
    background: var(--bg-subtle);
    border-bottom: 1px solid var(--border);
    position: relative;
    z-index: 30;
    box-sizing: border-box;
}
.writer-header .header-link {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    text-decoration: none;
    padding: 6px 12px;
    background: var(--surface);
    border-radius: 8px;
    transition: all 0.2s var(--ease);
}
.writer-header .header-link:hover { background: var(--surface-hover); color: var(--text); }
.header-sep {
    width: 1px;
    height: 20px;
    background: var(--border);
    flex-shrink: 0;
}
.project-selector {
    position: relative;
}
#projectName {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text);
    cursor: pointer;
    padding: 5px 10px;
    border: 1px solid var(--border);
    border-radius: 8px;
    transition: border-color 0.15s, background 0.15s;
    max-width: 260px;
    user-select: none;
}
#projectName:hover { border-color: var(--accent); background: var(--surface-hover); }
#projectName .pn-text {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.project-chevron {
    flex-shrink: 0;
    font-size: 11px;
    color: var(--text-secondary);
    transition: transform 0.2s;
}
#projectName.open { border-color: var(--accent); }
#projectName.open .project-chevron { transform: rotate(180deg); }

/* Project dropdown */
.project-dropdown {
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    min-width: 280px;
    max-width: calc(100vw - 16px);
    max-height: 360px;
    overflow-y: auto;
    background: var(--bg-subtle);
    border: 1px solid var(--border);
    border-radius: 10px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.15);
    z-index: 1000;
    padding: 4px 0;
}
.project-dropdown-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 14px;
    cursor: pointer;
    transition: background 0.1s;
}
.project-dropdown-item:hover { background: var(--surface-hover); }
.project-dropdown-item.active { background: color-mix(in srgb, var(--accent) 12%, transparent); }
.pdi-title {
    flex: 1;
    font-size: 13px;
    font-weight: 500;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.project-dropdown-item.active .pdi-title { color: var(--accent); font-weight: 600; }
.pdi-meta {
    font-size: 11px;
    color: var(--text-secondary);
    white-space: nowrap;
}
.pdi-delete {
    opacity: 0;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 2px 6px;
    font-size: 15px;
    line-height: 1;
    border-radius: 4px;
    transition: opacity 0.15s, color 0.15s, background 0.15s;
}
.project-dropdown-item:hover .pdi-delete { opacity: 1; }
.pdi-delete:hover { color: #e53935; background: rgba(229,57,53,0.1); }
.project-dropdown-divider {
    height: 1px;
    background: var(--border);
    margin: 4px 0;
}
.project-dropdown-new {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    cursor: pointer;
    font-size: 13px;
    color: var(--accent);
    font-weight: 500;
    transition: background 0.1s;
}
.project-dropdown-new:hover { background: var(--surface-hover); }

/* Info tip — reusable tooltip trigger + popover */
.info-tip {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 18px; height: 18px;
    border-radius: 50%;
    background: var(--surface);
    color: var(--text-muted);
    font-size: 11px;
    cursor: pointer;
    flex-shrink: 0;
    transition: background 0.15s, color 0.15s;
    border: 1px solid var(--border);
    position: relative;
}
.info-tip:hover { background: var(--surface-hover); color: var(--text); }
.info-tip-content {
    display: none;
    position: fixed;
    min-width: 240px;
    max-width: 300px;
    padding: 12px 14px;
    background: var(--bg-subtle, var(--surface));
    border: 1px solid var(--border);
    border-radius: 10px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.15);
    font-size: 12px;
    line-height: 1.6;
    color: var(--text-secondary);
    z-index: 10000;
    font-weight: 400;
}
.info-tip.open .info-tip-content { display: block; }
.info-tip-content strong { color: var(--text); font-weight: 600; }

.header-spacer { flex: 1; }
.header-btn {
    border: none;
    border-radius: 8px;
    background: var(--surface);
    color: var(--text-secondary);
    font-family: var(--font);
    font-size: 13px;
    font-weight: 600;
    padding: 6px 12px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: all 0.2s var(--ease);
}
.header-btn:hover { background: var(--surface-hover); color: var(--text); }
.header-btn.accent {
    background: var(--gradient-btn);
    color: #fff;
}
.header-btn.accent:hover { background: var(--gradient-btn-hover); }
.header-btn svg { width: 16px; height: 16px; }
#btnWriterSync.syncing svg { animation: spin-sync 1s linear infinite; }
#btnWriterSync.connected { color: var(--accent); }
#btnWriterSync.error { color: var(--red, #e53e3e); }
@keyframes spin-sync { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
#saveStatus {
    font-size: 12px;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 6px;
}
#saveStatus .dot {
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--green);
}
#saveStatus.saving .dot { background: var(--orange); }
#saveStatus.error .dot { background: #ff6b6b; }

/* Export dropdown */
.dropdown-wrap { position: relative; }
.dropdown-menu {
    position: absolute;
    top: calc(100% + 4px);
    right: 0;
    background: var(--bg-subtle);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 4px;
    min-width: 140px;
    box-shadow: var(--shadow);
    z-index: 50;
    display: none;
}
.dropdown-menu.open { display: block; }
.dropdown-item {
    display: flex;
    align-items: center;
    gap: 8px;
    width: 100%;
    padding: 8px 12px;
    border: none;
    border-radius: 6px;
    background: transparent;
    color: var(--text-secondary);
    font-family: var(--font);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    text-align: left;
    transition: all 0.15s;
}
.dropdown-item svg { flex-shrink: 0; }
.dropdown-item:hover { background: var(--surface-hover); color: var(--text); }
.dropdown-divider { height: 1px; background: var(--border); margin: 4px 0; }

/* Mobile more menu — hidden on desktop */
.mobile-more-wrap { display: none; }

/* Theme toggle */
.theme-toggle {
    width: 34px; height: 34px;
    border: none;
    border-radius: 8px;
    background: var(--surface);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    transition: all 0.2s var(--ease);
}
.theme-toggle:hover { background: var(--surface-hover); color: var(--text); }

/* ===== 3-Column Layout ===== */
.writer-main {
    display: flex;
    flex: 1;
    overflow: hidden;
    position: relative;
    z-index: 1;
}

/* Left Sidebar */
.sidebar-left {
    width: 280px;
    flex-shrink: 0;
    background: var(--bg-subtle);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: width 0.25s var(--ease);
    position: relative;
}
.sidebar-left.collapsed { width: 0; }
.sidebar-left.expanded { width: 50vw; }

/* Right Sidebar */
.sidebar-right {
    width: 320px;
    flex-shrink: 0;
    background: var(--bg-subtle);
    border-left: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: width 0.25s var(--ease);
    position: relative;
}
.sidebar-right.collapsed { width: 0; }
.sidebar-right.expanded { width: 50vw; }

/* Editor Area */
.editor-area {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
}

/* ===== Sidebar Toggle Buttons ===== */
.sidebar-toggle {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 48px;
    background: var(--surface-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-size: 12px;
    z-index: 20;
    transition: all 0.2s;
}
.sidebar-toggle:hover { background: var(--surface-card-hover); color: var(--text); }
.toggle-left { right: -10px; }
.toggle-right { left: -10px; }

/* Sidebar expand button (desktop only) */
.sidebar-expand {
    position: absolute;
    top: calc(50% + 32px);
    transform: translateY(-50%);
    width: 20px;
    height: 36px;
    background: var(--surface-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-size: 11px;
    z-index: 20;
    transition: all 0.2s;
}
.sidebar-expand:hover { background: var(--surface-card-hover); color: var(--accent); }
.expand-left { right: -10px; }
.expand-right { left: -10px; }

/* ===== Sidebar Tabs ===== */
.sidebar-tabs {
    display: flex;
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}
.sidebar-tab {
    flex: 1;
    padding: 12px 8px;
    text-align: center;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
    background: transparent;
    border: none;
    cursor: pointer;
    font-family: var(--font);
    transition: all 0.15s;
    border-bottom: 2px solid transparent;
}
.sidebar-tab:hover { color: var(--text-secondary); }
.sidebar-tab.active { color: var(--accent); border-bottom-color: var(--accent); }

/* ===== Progression Inbox Button ===== */
.prog-inbox-btn {
    flex: 0 0 auto;
    width: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--text-muted);
    cursor: pointer;
    transition: color 0.15s;
    padding: 0;
}
.prog-inbox-btn:hover { color: var(--accent); }
.prog-inbox-badge {
    position: absolute;
    top: 6px;
    right: 2px;
    min-width: 16px;
    height: 16px;
    padding: 0 4px;
    border-radius: 8px;
    background: var(--danger, #dc3545);
    color: #fff;
    font-size: 10px;
    font-weight: 700;
    font-family: var(--font);
    line-height: 16px;
    text-align: center;
    pointer-events: none;
}

/* ===== Chapters Panel ===== */
.sidebar-panel {
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}
.sidebar-panel.hidden { display: none; }
.sidebar-panel-header {
    padding: 12px 16px;
    flex-shrink: 0;
}
.btn-add-chapter {
    width: 100%;
    padding: 10px 14px;
    border-radius: 10px;
    border: 1px dashed var(--border);
    background: transparent;
    color: var(--text-secondary);
    font-family: var(--font);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    transition: all 0.15s var(--ease);
}
.btn-add-chapter:hover { border-color: var(--accent); color: var(--accent); background: rgba(124,108,240,0.05); }

#chapterList {
    flex: 1;
    overflow-y: auto;
    padding: 4px 8px;
}
.chapter-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    cursor: pointer;
    border-radius: 8px;
    transition: all 0.15s var(--ease);
    font-size: 13px;
    color: var(--text-secondary);
}
.chapter-item:hover { background: var(--surface-hover); color: var(--text); }
.chapter-item.active { background: rgba(124,108,240,0.12); color: var(--accent); font-weight: 600; }
.chapter-item .ch-drag {
    cursor: grab;
    color: var(--text-muted);
    font-size: 14px;
    flex-shrink: 0;
    opacity: 0;
    transition: opacity 0.15s;
}
.chapter-item:hover .ch-drag { opacity: 1; }
.chapter-item .ch-icon {
    font-size: 11px;
    font-weight: 700;
    color: var(--text-muted);
    flex-shrink: 0;
    min-width: 36px;
}
.chapter-item.active .ch-icon { color: var(--accent); }
.chapter-item .ch-title { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--text-secondary); font-weight: 400; }
.chapter-item .ch-title:empty { font-style: italic; opacity: 0.5; }
.chapter-item .ch-count { font-size: 11px; color: var(--text-muted); flex-shrink: 0; }
.chapter-item .ch-delete {
    opacity: 0; width: 20px; height: 20px; border-radius: 4px;
    background: transparent; border: none; color: var(--text-muted);
    cursor: pointer; font-size: 14px; display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
}
.chapter-item:hover .ch-delete { opacity: 1; }
.chapter-item .ch-delete:hover { color: #ff6b6b; background: rgba(255,59,48,0.1); }
.chapter-item.dragging { opacity: 0.5; }

/* ===== Arc Headers (Sidebar) ===== */
.arc-header {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px 4px;
    margin-top: 6px;
    cursor: pointer;
    user-select: none;
}
.arc-header:first-child { margin-top: 2px; }
.arc-header-chevron {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
    color: var(--text-muted);
    transition: transform 0.15s var(--ease);
}
.arc-header.collapsed .arc-header-chevron { transform: rotate(-90deg); }
.arc-header-title {
    flex: 1;
    font-size: 11px;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.arc-header-count {
    font-size: 10px;
    color: var(--text-muted);
    flex-shrink: 0;
}
.arc-header-actions {
    display: flex;
    gap: 2px;
    opacity: 0;
    transition: opacity 0.15s;
}
.arc-header:hover .arc-header-actions { opacity: 1; }
.arc-header-btn {
    width: 20px;
    height: 20px;
    border: none;
    border-radius: 4px;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    flex-shrink: 0;
}
.arc-header-btn:hover { color: var(--text); background: var(--surface-hover); }
.arc-header-btn.arc-delete:hover { color: #ff6b6b; background: rgba(255,59,48,0.1); }
.arc-header-title[contenteditable="true"] {
    outline: none;
    background: var(--surface);
    border-radius: 4px;
    padding: 1px 6px;
    box-shadow: inset 0 0 0 1px var(--accent);
    text-transform: none;
}
.arc-chapters { overflow: hidden; }
.arc-header.collapsed + .arc-chapters { display: none; }

/* Unassigned chapters (no arc) */
.arc-unassigned-label {
    padding: 6px 12px 4px;
    margin-top: 6px;
    font-size: 11px;
    font-weight: 600;
    color: var(--text-muted);
    opacity: 0.6;
}

/* ===== Chapter Meta (Notes + Summary) ===== */
.chapter-meta {
    border-top: 1px solid var(--border);
    padding: 10px 12px;
}
.chapter-meta.hidden { display: none; }
.chapter-meta-toggle { display: none; }
.chapter-meta-field { margin-bottom: 8px; }
.chapter-meta-field:last-child { margin-bottom: 0; }
.chapter-meta-field label {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 4px;
}
.chapter-meta-field textarea {
    width: 100%;
    box-sizing: border-box;
    font-family: var(--font);
    font-size: 12px;
    line-height: 1.5;
    padding: 6px 8px;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--bg);
    color: var(--text);
    resize: vertical;
}
.chapter-meta-field textarea:focus {
    outline: none;
    border-color: var(--border-focus);
}
.memory-card-display {
    font-size: 11px;
    line-height: 1.6;
    padding: 6px 8px;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--bg);
    color: var(--text);
    max-height: 200px;
    overflow-y: auto;
}
.memory-card-display .mc-slot {
    margin-bottom: 3px;
}
.memory-card-display .mc-label {
    font-weight: 600;
    color: var(--text-secondary);
}
.btn-gen {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 13px;
    padding: 0 2px;
    line-height: 1;
    opacity: 0.7;
    transition: opacity 0.15s;
}
.btn-gen:hover { opacity: 1; }
.btn-gen:disabled { opacity: 0.3; cursor: not-allowed; }

/* ===== Directive toggle ===== */
.directive-toggle {
    display: inline-flex; align-items: center; gap: 3px;
    cursor: pointer; font-size: 11px; font-weight: 500;
    vertical-align: middle; margin-left: 2px;
}
.directive-toggle input[type="checkbox"] {
    width: 13px; height: 13px; margin: 0; cursor: pointer;
}
.directive-toggle-label { color: var(--text-muted); }
.directive-toggle input:checked + .directive-toggle-label { color: var(--accent); }

/* ===== Snapshot UI ===== */
.snapshot-info { font-size: 11px; color: var(--text-muted); }
.snapshot-list { max-height: 300px; overflow-y: auto; }
.snapshot-item { display: flex; align-items: center; justify-content: space-between; padding: 8px 12px; border-bottom: 1px solid var(--border); }
.snapshot-item-info { display: flex; align-items: center; gap: 10px; flex: 1; min-width: 0; }
.snapshot-label { font-weight: 600; font-size: 13px; white-space: nowrap; }
.snapshot-time { font-size: 11px; color: var(--text-muted); white-space: nowrap; }
.snapshot-words { font-size: 11px; color: var(--text-muted); white-space: nowrap; }
.snapshot-item-actions { display: flex; gap: 4px; flex-shrink: 0; }
.snapshot-btn { font-size: 12px; padding: 4px 8px; border-radius: 6px; border: 1px solid var(--border); background: var(--surface); cursor: pointer; font-family: var(--font); color: var(--text-secondary); }
.snapshot-btn:hover { background: var(--surface-hover); }
.snapshot-btn-del:hover { color: var(--danger); border-color: var(--danger); }
.snapshot-preview { border-top: 1px solid var(--border); padding: 12px; }
.snapshot-preview.hidden { display: none; }
.snapshot-preview-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; font-size: 13px; font-weight: 600; }
.snapshot-preview-content { max-height: 200px; overflow-y: auto; font-size: 13px; white-space: pre-wrap; padding: 8px; background: var(--surface); border-radius: 8px; }
.snapshot-empty { text-align: center; color: var(--text-muted); font-size: 12px; padding: 24px 12px; }

/* ===== Settings Panel ===== */
.settings-group {
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.settings-group label {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    display: block;
    margin-bottom: 6px;
}
.settings-group select,
.settings-group input[type="range"] {
    width: 100%;
}
.settings-group select {
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--surface);
    color: var(--text);
    font-family: var(--font);
    font-size: 13px;
    outline: none;
    box-sizing: border-box;
}
.settings-group select:focus { border-color: var(--border-focus); }
.settings-group input[type="text"],
.settings-group textarea {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--surface);
    color: var(--text);
    font-family: var(--font);
    font-size: 13px;
    outline: none;
    box-sizing: border-box;
}
.settings-group input[type="text"]:focus,
.settings-group textarea:focus { border-color: var(--border-focus); }
.settings-group textarea { resize: vertical; min-height: 60px; line-height: 1.5; }
.settings-group-title {
    font-size: 13px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: -4px;
}
.settings-group input[type="range"] { accent-color: var(--accent); }
.settings-value {
    font-size: 11px;
    color: var(--text-muted);
    margin-top: 4px;
}

/* ===== Ghost Text ===== */
.ghost-text {
    color: var(--text-muted) !important;
    opacity: 0.5;
}
.ghost-text-bar {
    display: inline-flex; gap: 4px; margin-left: 4px;
    vertical-align: middle;
}
.ghost-text-bar button {
    padding: 2px 8px; border: 1px solid var(--border);
    border-radius: var(--radius); background: var(--bg-subtle);
    color: var(--text-secondary); font-size: 11px;
    cursor: pointer; transition: all 0.15s;
}
.ghost-text-bar button:hover {
    background: var(--accent); color: #fff;
    border-color: var(--accent);
}
.ghost-text-bar button.reject:hover {
    background: var(--danger); border-color: var(--danger);
}

/* ===== Ghost Action Bar (floating accept/reject) ===== */
.ghost-action-bar {
    position: fixed;
    bottom: calc(12px + env(safe-area-inset-bottom, 0px));
    left: 50%; transform: translateX(-50%);
    display: none; gap: 8px; z-index: 50;
    background: var(--surface-card); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 8px 12px;
    box-shadow: var(--shadow);
}
.ghost-action-bar.show { display: flex; }
.ghost-btn { padding: 8px 16px; border-radius: 8px; font-weight: 600; font-size: 13px; font-family: var(--font); cursor: pointer; transition: all 0.15s; }
.ghost-btn.accept { background: var(--green); color: #fff; border: none; }
.ghost-btn.accept:hover { filter: brightness(1.1); }
.ghost-btn.reject { background: var(--surface); color: var(--text-secondary); border: 1px solid var(--border); }
.ghost-btn.reject:hover { background: var(--danger); color: #fff; border-color: var(--danger); }

/* ===== AI Messages ===== */
.ai-msg-meta {
    font-size: 10px; color: var(--text-muted); margin-top: 6px;
    display: flex; gap: 8px; align-items: center; opacity: 0.6;
}
.ai-msg:hover .ai-msg-meta { opacity: 1; }
.ai-msg .msg-actions {
    display: flex; gap: 4px; margin-top: 6px;
    justify-content: flex-end;
}
.ai-msg .msg-actions button {
    padding: 2px 6px; border: 1px solid var(--border);
    border-radius: 6px; background: var(--bg);
    color: var(--text-secondary); font-size: 10px;
    cursor: pointer; transition: all 0.15s;
}
.ai-msg .msg-actions button:hover {
    background: var(--accent); color: #fff;
    border-color: var(--accent);
}
.ai-streaming-indicator {
    display: inline-block; width: 6px; height: 14px;
    background: var(--accent); border-radius: 1px;
    animation: blink 0.8s infinite;
    vertical-align: text-bottom; margin-left: 2px;
}
@keyframes blink { 0%, 50% { opacity: 1; } 51%, 100% { opacity: 0; } }

/* ===== Editor ===== */
.ql-toolbar.ql-snow {
    background: var(--bg-subtle);
    border: none !important;
    border-bottom: 1px solid var(--border) !important;
    padding: 8px 16px;
    flex-shrink: 0;
}
.ql-toolbar .ql-stroke { stroke: var(--text-secondary); }
.ql-toolbar .ql-fill { fill: var(--text-secondary); }
.ql-toolbar .ql-picker-label { color: var(--text-secondary); }
.ql-toolbar .ql-picker-options {
    background: var(--bg-subtle);
    border: 1px solid var(--border);
    border-radius: 8px;
    box-shadow: var(--shadow);
}
.ql-toolbar .ql-picker-item { color: var(--text-secondary); }
.ql-toolbar .ql-picker-item:hover { color: var(--accent); }
.ql-toolbar button:hover .ql-stroke,
.ql-toolbar .ql-picker-label:hover { stroke: var(--accent); color: var(--accent); }
.ql-toolbar button.ql-active .ql-stroke { stroke: var(--accent); }
.ql-toolbar button.ql-active .ql-fill { fill: var(--accent); }
.ql-toolbar button:hover .ql-fill { fill: var(--accent); }

.ql-container.ql-snow {
    border: none !important;
    font-family: var(--font-read);
    font-size: 16px;
    line-height: 1.8;
    color: var(--text);
}

.editor-page {
    flex: 1;
    overflow-y: auto;
    padding: 32px 24px;
    display: flex;
    justify-content: center;
}
#editor {
    max-width: 720px;
    width: 100%;
}
.ql-editor {
    padding: 40px;
    min-height: 600px;
    background: var(--surface-card);
    border-radius: var(--radius);
    border: 1px solid var(--border);
}
.ql-editor:focus { border-color: var(--border-focus); }
.ql-editor.ql-blank::before {
    color: var(--text-muted);
    font-style: italic;
}
.ql-editor h1 { font-size: 28px; font-weight: 800; margin-bottom: 12px; color: var(--text); }
.ql-editor h2 { font-size: 22px; font-weight: 700; margin-bottom: 10px; color: var(--text); }
.ql-editor h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; color: var(--text); }
.ql-editor p { margin-bottom: 8px; }
.ql-editor blockquote {
    border-left: 3px solid var(--accent);
    padding-left: 16px;
    color: var(--text-secondary);
    margin: 12px 0;
}
.ql-editor pre.ql-syntax {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px;
    font-family: 'Fira Code', monospace;
    font-size: 14px;
    color: var(--text-secondary);
}
.ql-editor ol, .ql-editor ul { padding-left: 24px; }

/* Ghost text for AI suggestions */
.ghost-text {
    color: var(--text-muted) !important;
    opacity: 0.5;
    font-style: italic;
    background: rgba(124,108,240,0.05);
    border-radius: 2px;
}

/* ===== Status Bar ===== */
.status-bar {
    display: flex;
    align-items: center;
    padding: 8px 24px;
    border-top: 1px solid var(--border);
    background: var(--bg-subtle);
    font-size: 12px;
    color: var(--text-muted);
    flex-shrink: 0;
    gap: 16px;
}
#wordCount { flex-shrink: 0; }
#statusChapter {
    flex: 1;
    text-align: center;
    color: var(--text-secondary);
    font-weight: 600;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.status-bar-right { flex-shrink: 0; }

/* ===== AI Panel (Right Sidebar) ===== */
.ai-header {
    padding: 10px 14px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
    background: var(--bg-subtle);
}
.ai-header-title {
    font-size: 13px;
    font-weight: 700;
    color: var(--text);
    letter-spacing: 0.2px;
}
.ai-header-gear {
    width: 30px; height: 30px;
    border-radius: 8px;
    border: 1px solid transparent;
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    transition: all 0.15s;
}
.ai-header-gear:hover { background: var(--surface-hover); color: var(--text); border-color: var(--border); }
.ai-header-gear.active { color: var(--accent); background: color-mix(in srgb, var(--accent) 10%, transparent); border-color: color-mix(in srgb, var(--accent) 25%, transparent); }

/* -- Mode system: 2-tier layout -- */
.ai-mode-section { flex-shrink: 0; border-bottom: 1px solid var(--border); }
/* Primary tabs: Chat / Thế giới */
.ai-mode-primary {
    display: flex;
    border-bottom: 1px solid var(--border);
}
.ai-mode-tab {
    flex: 1;
    padding: 10px 8px;
    text-align: center;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-muted);
    background: transparent;
    border: none;
    cursor: pointer;
    font-family: var(--font);
    transition: all 0.15s;
    border-bottom: 2px solid transparent;
    position: relative;
}
.ai-mode-tab:hover { color: var(--text-secondary); background: var(--surface); }
.ai-mode-tab.active {
    color: var(--accent);
    border-bottom-color: var(--accent);
    background: color-mix(in srgb, var(--accent) 5%, transparent);
}
/* Secondary: editor action pills */
.ai-mode-actions {
    display: flex;
    gap: 5px;
    padding: 8px 12px;
    flex-wrap: wrap;
}
.ai-action-btn {
    padding: 5px 10px;
    border-radius: 6px;
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--text-secondary);
    font-size: 11px;
    font-weight: 600;
    font-family: var(--font);
    cursor: pointer;
    transition: all 0.15s var(--ease);
    white-space: nowrap;
}
.ai-action-btn:hover { background: var(--surface-hover); color: var(--text); border-color: color-mix(in srgb, var(--text) 20%, transparent); }
.ai-action-btn.active {
    background: color-mix(in srgb, var(--accent) 14%, transparent);
    color: var(--accent);
    border-color: color-mix(in srgb, var(--accent) 30%, transparent);
}

/* -- Context checkboxes -- */
.ai-context {
    padding: 8px 14px;
    border-bottom: 1px solid var(--border);
    font-size: 12px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    gap: 14px;
}
.ai-context-title {
    font-size: 10px;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.6px;
    flex-shrink: 0;
}
.ai-context label {
    display: inline-flex; align-items: center; gap: 5px;
    color: var(--text-secondary); cursor: pointer;
    font-size: 11px; font-weight: 500;
    padding: 3px 8px;
    border-radius: 5px;
    transition: background 0.15s;
}
.ai-context label:hover { background: var(--surface); }
.ai-context input[type="checkbox"] {
    accent-color: var(--accent);
    width: 14px; height: 14px;
    cursor: pointer;
}

/* -- Messages area -- */
#aiMessages {
    flex: 1;
    overflow-y: auto;
    padding: 14px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.ai-msg {
    position: relative;
    padding: 10px 14px;
    border-radius: 14px;
    font-size: 13px;
    line-height: 1.65;
    max-width: 92%;
    word-break: break-word;
    animation: msgFadeIn 0.2s ease-out;
}
.ai-msg-copy {
    position: absolute;
    top: 6px;
    right: 6px;
    width: 24px;
    height: 24px;
    padding: 0;
    border: none;
    border-radius: 6px;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.15s, background 0.15s, color 0.15s;
    display: flex;
    align-items: center;
    justify-content: center;
}
.ai-msg:hover .ai-msg-copy { opacity: 0.7; }
.ai-msg-copy:hover { opacity: 1 !important; background: var(--surface-hover); color: var(--accent); }
.ai-msg.user .ai-msg-copy { color: rgba(255,255,255,0.6); }
.ai-msg.user .ai-msg-copy:hover { color: #fff; background: rgba(255,255,255,0.15); }
/* -- Message action toolbar (Copy / Insert / Regen) -- */
.ai-msg-toolbar {
    display: flex; gap: 3px; margin-top: 6px; opacity: 0;
    transition: opacity 0.2s;
}
.ai-msg:hover .ai-msg-toolbar { opacity: 1; }
.ai-msg-toolbar button {
    padding: 3px 10px; border-radius: 5px; border: 1px solid var(--border);
    background: var(--surface); color: var(--text-secondary); font-size: 10px;
    font-weight: 600; font-family: var(--font); cursor: pointer;
    transition: all 0.15s; display: inline-flex; align-items: center; gap: 4px;
}
.ai-msg-toolbar button:hover {
    background: var(--surface-hover); color: var(--accent);
    border-color: color-mix(in srgb, var(--accent) 30%, transparent);
}
.ai-msg-toolbar button svg { width: 12px; height: 12px; flex-shrink: 0; }
@keyframes msgFadeIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: translateY(0); } }
.ai-typing { color: var(--text-muted); letter-spacing: 2px; animation: typingPulse 1s infinite; }
@keyframes typingPulse { 0%, 100% { opacity: 0.3; } 50% { opacity: 1; } }
.ai-msg.user {
    align-self: flex-end;
    background: var(--accent);
    color: #fff;
    border-bottom-right-radius: 4px;
    box-shadow: 0 1px 4px color-mix(in srgb, var(--accent) 25%, transparent);
}
.ai-msg.user .ai-msg-meta { color: rgba(255,255,255,0.55); }
.ai-msg.assistant {
    align-self: flex-start;
    background: var(--surface-card);
    color: var(--text);
    border: 1px solid var(--border);
    border-bottom-left-radius: 4px;
}
.ai-msg.system {
    align-self: center;
    background: transparent;
    color: var(--text-muted);
    font-size: 11px;
    font-style: italic;
    padding: 4px 12px;
}
.ai-msg pre {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 10px;
    overflow-x: auto;
    font-size: 12px;
    margin: 8px 0;
}
/* Worldbuild entry cards */
.wb-card-group { display: flex; flex-direction: column; gap: 8px; margin-top: 10px; }
.wb-card {
    background: var(--surface-card);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 10px 12px;
    transition: opacity 0.3s;
}
.wb-card.imported { opacity: 0.5; }
.wb-card.imported .wb-card-import-btn { pointer-events: none; }
.wb-card-header { display: flex; align-items: center; gap: 8px; }
.wb-card-cat {
    font-size: 10px; font-weight: 700; text-transform: uppercase;
    padding: 2px 6px; border-radius: 4px; letter-spacing: 0.3px;
    white-space: nowrap;
}
.wb-card-cat[data-cat="characters"] { background: rgba(72,187,120,0.15); color: #48bb78; }
.wb-card-cat[data-cat="locations"] { background: rgba(237,137,54,0.15); color: #ed8936; }
.wb-card-cat[data-cat="rules"] { background: rgba(159,122,234,0.15); color: #9f7aea; }
.wb-card-cat[data-cat="outline"] { background: rgba(159,122,234,0.15); color: #9f7aea; }
.wb-card-cat[data-cat="items"] { background: rgba(66,153,225,0.15); color: #4299e1; }
.wb-card-cat[data-cat="plots"] { background: rgba(237,100,166,0.15); color: #ed64a6; }
.wb-card-cat[data-cat="settings"] { background: rgba(160,174,192,0.15); color: #a0aec0; }
.wb-card-title { flex: 1; font-weight: 600; font-size: 13px; color: var(--text); }
.wb-card-import-btn {
    font-size: 11px; padding: 3px 10px; border-radius: 6px;
    border: 1px solid var(--accent); color: var(--accent);
    background: transparent; cursor: pointer; white-space: nowrap;
    transition: all 0.15s;
}
.wb-card-import-btn:hover { background: var(--accent); color: #fff; }
.wb-card-import-btn:disabled { opacity: 0.4; cursor: default; pointer-events: none; }
.wb-card-desc {
    margin-top: 6px; font-size: 12px; color: var(--text-secondary);
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
    overflow: hidden; line-height: 1.5;
}
.wb-card-parent {
    margin-top: 4px; font-size: 11px; color: var(--accent);
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.wb-card-keywords { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 6px; }
.wb-card-kw {
    font-size: 10px; padding: 1px 6px; border-radius: 3px;
    background: var(--surface); color: var(--text-muted);
}
/* -- WB card relation chips -- */
.wb-card-rels { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 6px; }
.wb-card-rel {
    font-size: 10px; padding: 2px 7px; border-radius: 4px;
    background: rgba(196,149,106,0.1); color: var(--accent-2);
    border: 1px solid rgba(196,149,106,0.15);
}
[data-theme="dark"] .wb-card-rel {
    background: rgba(196,149,106,0.12); border-color: rgba(196,149,106,0.2);
}
.wb-import-all {
    margin-top: 10px; padding-top: 10px; text-align: center;
    border-top: 1px dashed var(--border);
}
.wb-import-all button {
    font-size: 12px; padding: 6px 16px; border-radius: 8px;
    cursor: pointer; font-weight: 600;
    background: transparent; color: var(--accent);
    border: 1px solid var(--accent);
    transition: all 0.15s;
}
.wb-import-all button:hover { background: var(--accent); color: #fff; }
.wb-import-all button:disabled { opacity: 0.4; cursor: default; pointer-events: none; }
.wb-card { cursor: pointer; transition: opacity 0.3s, box-shadow 0.15s; }
.wb-card:not(.imported):hover { box-shadow: 0 2px 12px rgba(0,0,0,0.08); }

/* -- WB entry detail modal -- */
.wb-detail-overlay {
    position: fixed; inset: 0; z-index: 110;
    background: rgba(0,0,0,0.55);
    display: none; align-items: center; justify-content: center;
    backdrop-filter: blur(4px);
}
.wb-detail-overlay.open { display: flex; }
.wb-detail {
    background: var(--bg-subtle);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 0; max-width: 520px; width: 92%;
    max-height: 85vh; display: flex; flex-direction: column;
    box-shadow: 0 16px 48px rgba(0,0,0,0.18);
    animation: modalIn 0.2s var(--ease);
}
.wb-detail-head {
    display: flex; align-items: center; gap: 10px;
    padding: 18px 20px 14px; border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}
.wb-detail-head .wb-card-cat { font-size: 11px; }
.wb-detail-head-title {
    flex: 1; font-size: 16px; font-weight: 700; color: var(--text);
    overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.wb-detail-close {
    width: 28px; height: 28px; border-radius: 6px;
    border: none; background: var(--surface); color: var(--text-muted);
    font-size: 16px; cursor: pointer; display: flex;
    align-items: center; justify-content: center;
    transition: background 0.15s;
}
.wb-detail-close:hover { background: var(--border); color: var(--text); }
.wb-detail-body {
    overflow-y: auto; padding: 16px 20px 20px;
    flex: 1; min-height: 0;
}
.wb-detail-label {
    font-size: 11px; font-weight: 700; text-transform: uppercase;
    letter-spacing: 0.4px; color: var(--text-muted);
    margin-bottom: 6px; margin-top: 16px;
}
.wb-detail-label:first-child { margin-top: 0; }
.wb-detail-text {
    font-size: 13px; line-height: 1.65; color: var(--text);
    white-space: pre-wrap; word-break: break-word;
}
.wb-detail-textarea {
    width: 100%; padding: 8px 12px;
    border: 1px solid var(--border); border-radius: 8px;
    background: var(--surface); color: var(--text);
    font-family: var(--font); font-size: 13px;
    line-height: 1.6; outline: none; resize: vertical;
    min-height: 60px;
}
.wb-detail-textarea:focus { border-color: var(--border-focus); }
.wb-detail-input {
    width: 100%; padding: 7px 12px;
    border: 1px solid var(--border); border-radius: 8px;
    background: var(--surface); color: var(--text);
    font-family: var(--font); font-size: 13px; outline: none;
}
.wb-detail-input:focus { border-color: var(--border-focus); }
.wb-detail-chips {
    display: flex; flex-wrap: wrap; gap: 4px; margin-top: 2px;
}
.wb-detail-chip {
    font-size: 11px; padding: 2px 8px; border-radius: 4px;
    background: var(--surface); color: var(--text-muted);
    border: 1px solid var(--border);
}
.wb-detail-rel-chip {
    font-size: 11px; padding: 3px 8px; border-radius: 4px;
    background: rgba(196,149,106,0.1); color: var(--accent-2);
    border: 1px solid rgba(196,149,106,0.15);
}
.wb-detail-foot {
    display: flex; align-items: center; gap: 8px;
    padding: 12px 20px 16px; border-top: 1px solid var(--border);
    flex-shrink: 0; justify-content: flex-end;
}
.wb-detail-foot button {
    padding: 8px 18px; border-radius: 8px; font-size: 12px;
    font-weight: 600; cursor: pointer; border: none;
    font-family: var(--font); transition: all 0.15s;
}
.wb-detail-foot .wbd-btn-cancel {
    background: var(--surface); color: var(--text-secondary);
    border: 1px solid var(--border);
}
.wb-detail-foot .wbd-btn-save {
    background: linear-gradient(135deg, var(--accent), var(--accent-hover));
    color: #fff;
}
.wb-detail-foot .wbd-btn-save:hover { opacity: 0.85; }
.wb-detail-foot .wbd-btn-import {
    background: transparent; color: var(--accent);
    border: 1px solid var(--accent);
}
.wb-detail-foot .wbd-btn-import:hover { background: var(--accent); color: #fff; }
.wb-detail-mode { display: flex; gap: 6px; margin-top: 4px; }
.wb-detail-mode label {
    font-size: 12px; padding: 4px 10px; border-radius: 6px;
    border: 1px solid var(--border); cursor: pointer;
    color: var(--text-secondary); transition: all 0.15s;
}
.wb-detail-mode label:has(input:checked) {
    border-color: var(--accent); color: var(--accent);
    background: rgba(196,149,106,0.08);
}
.wb-detail-mode input { display: none; }

.ai-empty {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-size: 12px;
    text-align: center;
    padding: 32px 24px;
    line-height: 1.7;
}

.ai-token-bar {
    font-size: 11px; color: var(--text-muted);
    border-top: 1px solid var(--border); background: var(--bg-subtle);
    flex-shrink: 0; display: none;
}
.ai-token-bar.visible { display: block; }
.ai-token-summary {
    display: flex; align-items: center; gap: 8px;
    padding: 0 14px; line-height: 26px; cursor: pointer;
    user-select: none;
}
.ai-token-summary:hover { background: var(--surface); }
.ai-token-summary .token-label { opacity: 0.6; }
.ai-token-summary .token-value { font-weight: 600; font-variant-numeric: tabular-nums; }
.ai-token-summary .token-toggle {
    margin-left: auto; opacity: 0.4; font-size: 9px; transition: transform 0.2s;
}
.ai-token-bar.expanded .token-toggle { transform: rotate(180deg); }
/* Context Inspector — expanded detail panel */
.ai-ctx-details {
    display: none; padding: 6px 10px 8px;
    border-top: 1px solid var(--border);
    max-height: 400px; overflow-y: auto;
}
.ai-token-bar.expanded .ai-ctx-details { display: block; }
.ctx-segbar {
    display: flex; height: 6px; border-radius: 3px;
    overflow: hidden; margin-bottom: 6px; gap: 1px;
    background: var(--surface);
}
.ctx-seg { min-width: 3px; transition: width 0.3s; }
.ctx-blocks { display: flex; flex-direction: column; gap: 1px; }
.ctx-block-hd {
    display: flex; align-items: center; gap: 6px;
    padding: 3px 4px; border-radius: 4px;
    cursor: pointer; font-size: 11px; transition: background 0.1s;
}
.ctx-block-hd:hover { background: var(--surface); }
.ctx-block-dot { width: 8px; height: 8px; border-radius: 2px; flex-shrink: 0; }
.ctx-block-name { flex: 1; color: var(--text-secondary); font-weight: 500; }
.ctx-block-size { color: var(--text-muted); font-variant-numeric: tabular-nums; }
.ctx-block-pct { color: var(--text-muted); opacity: 0.6; width: 28px; text-align: right; font-variant-numeric: tabular-nums; }
.ctx-block-chevron { color: var(--text-muted); opacity: 0.4; font-size: 8px; width: 14px; text-align: center; }
.ctx-block-body {
    margin: 0 4px 4px 18px; padding: 6px 8px;
    background: var(--bg); border: 1px solid var(--border);
    border-radius: 6px;
}
.ctx-block-pre {
    margin: 0; font-size: 10px; line-height: 1.5;
    color: var(--text-secondary); white-space: pre-wrap;
    word-break: break-word; max-height: 200px; overflow-y: auto;
}
.ctx-block-more {
    display: block; margin-top: 4px; padding: 0; border: none;
    background: none; color: var(--accent-2); font-size: 10px;
    cursor: pointer; font-weight: 600;
}
.ctx-block-more:hover { text-decoration: underline; }
.ctx-world-entries {
    display: flex; flex-wrap: wrap; gap: 3px;
    padding: 2px 4px 4px 18px;
}
.ctx-tag {
    display: inline-flex; align-items: center; gap: 3px;
    padding: 2px 7px; border-radius: 4px; font-size: 10px;
    font-weight: 500; line-height: 16px; white-space: nowrap;
}
.ctx-tag--world { background: #e8f5e9; color: #2e7d32; border: 1px solid #c8e6c9; }
[data-theme="dark"] .ctx-tag--world { background: #1b3a26; color: #81c784; border-color: #2e5a3a; }
.ctx-tag--overflow { background: var(--surface); color: var(--text-muted); opacity: 0.45; text-decoration: line-through; border: 1px dashed var(--border); }
.ctx-budgets { margin-top: 6px; padding-top: 6px; border-top: 1px solid var(--border); }
.ctx-budget-row {
    display: flex; align-items: center; gap: 8px;
    font-size: 10px; color: var(--text-muted); margin-bottom: 3px;
}
.ctx-budget-label { width: 36px; font-weight: 600; }
.ctx-budget-bar {
    flex: 1; height: 4px; background: var(--surface);
    border-radius: 2px; overflow: hidden;
}
.ctx-budget-fill { height: 100%; border-radius: 2px; transition: width 0.3s; }
.ctx-budget-value { width: 90px; text-align: right; font-variant-numeric: tabular-nums; }
.ai-input {
    padding: 10px 12px;
    border-top: none;
    display: flex;
    gap: 6px;
    align-items: flex-end;
    flex-shrink: 0;
    background: var(--bg-subtle);
}
#aiInput {
    flex: 1;
    resize: none;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: var(--bg);
    color: var(--text);
    padding: 9px 14px;
    font-family: var(--font);
    font-size: 13px;
    min-height: 40px;
    max-height: 120px;
    outline: none;
    line-height: 1.5;
    transition: border-color 0.15s;
}
#aiInput:focus { border-color: var(--accent); box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent) 15%, transparent); }
#aiInput::placeholder { color: var(--text-muted); }
#btnAiSend {
    width: 38px; height: 38px;
    border-radius: 10px;
    background: var(--gradient-btn);
    border: none;
    color: white;
    font-size: 16px;
    cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
    transition: all 0.2s var(--ease);
    box-shadow: 0 2px 6px color-mix(in srgb, var(--accent) 30%, transparent);
}
#btnAiSend:hover { background: var(--gradient-btn-hover); box-shadow: 0 3px 10px color-mix(in srgb, var(--accent) 40%, transparent); transform: translateY(-1px); }
/* Analysis templates menu */
.ai-analysis-wrap { position: relative; flex-shrink: 0; }
#btnAiAnalysis {
    width: 38px; height: 38px; border-radius: 10px;
    background: var(--bg); border: 1px solid var(--border);
    color: var(--text-muted); font-size: 15px; cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    transition: all 0.2s var(--ease);
}
#btnAiAnalysis:hover { border-color: var(--accent); color: var(--accent); }
.ai-analysis-menu {
    display: none; position: absolute; bottom: calc(100% + 6px); right: 0;
    background: var(--bg); border: 1px solid var(--border); border-radius: 10px;
    box-shadow: var(--shadow-lg); min-width: 240px; z-index: 90;
    padding: 6px 0; animation: fadeSlideUp 0.15s var(--ease);
}
.ai-analysis-menu.open { display: block; }
.ai-analysis-item {
    display: flex; align-items: center; gap: 8px;
    padding: 8px 14px; cursor: pointer; font-size: 13px; color: var(--text);
    transition: background 0.1s;
}
.ai-analysis-item:hover { background: var(--bg-subtle); }
.ai-analysis-item .analysis-icon { font-size: 15px; width: 20px; text-align: center; flex-shrink: 0; }
.ai-analysis-item .analysis-label { flex: 1; }
.ai-analysis-item .analysis-desc { font-size: 11px; color: var(--text-muted); }
.ai-analysis-sep { height: 1px; background: var(--border); margin: 4px 10px; }

/* Analysis readiness wall */
.analysis-wall {
    background: var(--bg-subtle); border: 1px solid var(--border);
    border-radius: 10px; padding: 16px; max-width: 420px;
}
.analysis-wall-title {
    font-size: 15px; font-weight: 700; margin-bottom: 12px; color: var(--text);
}
.analysis-wall-checks {
    font-size: 13px; line-height: 1.8; margin-bottom: 14px; color: var(--text-secondary);
}
.analysis-wall-block {
    font-size: 12px; color: var(--text-muted); font-style: italic;
    padding-top: 8px; border-top: 1px solid var(--border);
}
.analysis-wall-actions {
    display: flex; gap: 8px; padding-top: 8px; border-top: 1px solid var(--border);
}
.analysis-wall-btn {
    padding: 7px 16px; border-radius: 8px; font-size: 13px; font-weight: 600;
    cursor: pointer; border: none; font-family: var(--font); transition: opacity 0.15s;
}
.analysis-wall-btn:hover { opacity: 0.85; }
.analysis-wall-run {
    background: var(--gradient-btn); color: #fff;
}
.analysis-wall-cancel {
    background: var(--surface); color: var(--text-secondary); border: 1px solid var(--border);
}
@keyframes fadeSlideUp { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: translateY(0); } }
#btnAiStop {
    width: 38px; height: 38px;
    border-radius: 10px;
    background: rgba(255,59,48,0.12);
    border: 1px solid rgba(255,59,48,0.25);
    color: #ff6b6b;
    font-size: 14px;
    cursor: pointer;
    display: none;
    align-items: center; justify-content: center;
    flex-shrink: 0;
    transition: all 0.2s var(--ease);
}
#btnAiStop:hover { background: rgba(255,59,48,0.22); }

/* Floating re-open buttons when sidebars collapsed */
.sidebar-reopen {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 28px;
    height: 56px;
    background: var(--bg-subtle);
    border: 1px solid var(--border);
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-size: 12px;
    z-index: 25;
    transition: all 0.2s;
}
.sidebar-reopen:hover { background: var(--surface-hover); color: var(--accent); }
.sidebar-reopen.visible { display: flex; }
.reopen-right { right: 0; border-right: none; border-radius: 8px 0 0 8px; box-shadow: -2px 0 8px rgba(0,0,0,0.06); }
.reopen-left { left: 0; border-left: none; border-radius: 0 8px 8px 0; box-shadow: 2px 0 8px rgba(0,0,0,0.06); }

/* ===== AI History Panel ===== */
#aiHistory { display: none; flex-direction: column; gap: 0; flex: 1; overflow: hidden; }
#aiHistory.open { display: flex; }
.ai-history-header { display: flex; align-items: center; justify-content: space-between; padding: 8px 12px; border-bottom: 1px solid var(--border); }
.ai-history-header span { font-weight: 600; font-size: 13px; }
.ai-history-new { font-size: 12px; color: var(--accent); background: none; border: 1px solid var(--accent); border-radius: 6px; padding: 4px 10px; cursor: pointer; font-family: var(--font); }
.ai-history-new:hover { background: var(--accent); color: #fff; }
#aiHistoryList { flex: 1; overflow-y: auto; padding: 8px; }
.session-card { padding: 10px 12px; border-radius: 8px; border: 1px solid var(--border); margin-bottom: 6px; cursor: pointer; transition: background 0.15s; }
.session-card:hover { background: var(--surface-hover); }
.session-card.active { border-color: var(--accent); background: var(--surface); }
.session-card-title { font-weight: 600; font-size: 13px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.session-card-meta { font-size: 11px; color: var(--text-muted); margin-top: 4px; display: flex; gap: 8px; }
.session-card-del { background: none; border: none; color: var(--text-muted); cursor: pointer; font-size: 14px; float: right; padding: 0 2px; }
.session-card-del:hover { color: var(--danger); }
.session-card-badge { display: inline-block; font-size: 10px; font-weight: 600; padding: 1px 6px; border-radius: 4px; margin-right: 6px; vertical-align: middle; text-transform: uppercase; letter-spacing: 0.3px; }
.session-card-badge.chat { background: var(--accent); color: #fff; opacity: 0.8; }
.session-card-badge.worldbuild { background: #6b8e5a; color: #fff; }
[data-theme="dark"] .session-card-badge.worldbuild { background: #7aa866; }
.ai-history-empty { text-align: center; color: var(--text-muted); font-size: 12px; padding: 24px 12px; }

/* ===== AI Settings Panel ===== */
#aiSettings {
    display: none;
    flex: 1;
    overflow-y: auto;
}
#aiSettings.open {
    display: flex;
    flex-direction: column;
}
.ai-settings-section {
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 14px;
    overflow-y: auto;
}
.ai-settings-section label {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    display: block;
    margin-bottom: 4px;
}
.ai-fetch-models-link {
    font-weight: 400;
    font-size: 11px;
    color: var(--accent);
    text-decoration: none;
    margin-left: 8px;
    cursor: pointer;
}
.ai-fetch-models-link:hover { text-decoration: underline; }
.ai-settings-section select,
.ai-settings-section input[type="text"],
.ai-settings-section input[type="password"],
.ai-settings-section input[type="number"] {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--surface);
    color: var(--text);
    font-family: var(--font);
    font-size: 13px;
    outline: none;
}
.ai-settings-section select:focus,
.ai-settings-section input:focus { border-color: var(--border-focus); }
.ai-settings-section input[type="range"] {
    width: 100%;
    accent-color: var(--accent);
}
.ai-settings-row {
    display: flex;
    align-items: center;
    gap: 8px;
}
.ai-settings-row .range-val {
    font-size: 12px;
    color: var(--text-muted);
    min-width: 32px;
    text-align: right;
}
.ai-setting-group { display: flex; flex-direction: column; }
.ai-setting-group.hidden { display: none; }

/* Custom model dropdown (replaces <datalist>) */
.model-dropdown-wrap { position: relative; }
.model-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    max-height: 220px;
    overflow-y: auto;
    background: var(--bg-subtle);
    border: 1px solid var(--border);
    border-top: none;
    border-radius: 0 0 8px 8px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.15);
    z-index: 60;
    display: none;
}
.model-dropdown.open { display: block; }
.model-dropdown-item {
    padding: 8px 12px;
    font-size: 13px;
    color: var(--text);
    cursor: pointer;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.model-dropdown-item:hover,
.model-dropdown-item.highlighted { background: var(--surface-hover); }
.model-dropdown-empty {
    padding: 8px 12px;
    font-size: 12px;
    color: var(--text-muted);
    font-style: italic;
}
#groupVertex { flex-direction: column; gap: 14px; }
.ai-settings-subtitle {
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--text-muted);
    padding-top: 6px;
    border-top: 1px solid var(--border);
}
.ai-settings-note {
    font-size: 11px;
    color: var(--text-muted);
    line-height: 1.5;
    margin-top: 4px;
}
.ai-settings-check {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text);
}
.ai-settings-check input {
    accent-color: var(--accent);
}
.ai-setting-label-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
}
.ai-threshold-mode {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 56px;
    padding: 2px 8px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.02em;
    border: 1px solid var(--border);
    color: var(--text-muted);
    background: color-mix(in srgb, var(--panel) 82%, transparent);
}
.ai-threshold-mode.is-auto {
    color: #0b6b4f;
    border-color: color-mix(in srgb, #27c08a 50%, var(--border));
    background: color-mix(in srgb, #27c08a 12%, var(--panel));
}
.ai-threshold-mode.is-manual {
    color: #8a5712;
    border-color: color-mix(in srgb, #d9983f 55%, var(--border));
    background: color-mix(in srgb, #d9983f 14%, var(--panel));
}
.ai-settings-actions { display: flex; gap: 8px; margin-top: 4px; }
.ai-btn-save, .ai-btn-test {
    flex: 1; padding: 8px; border-radius: 8px; font-size: 12px; font-family: var(--font);
    cursor: pointer; border: 1px solid var(--border); transition: all .15s;
}
.ai-btn-save { background: var(--accent); color: #fff; border-color: var(--accent); }
.ai-btn-save:hover { opacity: 0.9; }
.ai-btn-save.saved { background: var(--green); border-color: var(--green); }
.ai-btn-test { background: transparent; color: var(--text-secondary); }
.ai-btn-test:hover { background: var(--surface-hover); }
.ai-btn-test:disabled { opacity: 0.5; cursor: default; }
.ai-test-result { font-size: 11px; padding: 0 2px; min-height: 0; transition: all .2s; }
.ai-test-result.success { color: var(--green); }
.ai-test-result.error { color: #ff6b6b; }
.ai-test-result.loading { color: var(--text-muted); }
.ai-provider-status { font-size: 11px; display: inline-flex; align-items: center; gap: 4px; padding: 2px 8px; border-radius: 10px; }
.ai-provider-status.has-key { background: color-mix(in srgb, var(--green) 15%, transparent); color: var(--green); }
.ai-provider-status.no-key { background: color-mix(in srgb, var(--text-muted) 10%, transparent); color: var(--text-muted); }
.ai-provider-status .status-dot { width: 6px; height: 6px; border-radius: 50%; }
.ai-provider-status.has-key .status-dot { background: var(--green); }
.ai-provider-status.no-key .status-dot { background: var(--text-muted); }

/* AI main content (modes + context + messages) */
.ai-main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}
.ai-main-content.hidden { display: none; }

/* ===== Select/option dark theme fixes ===== */
select option {
    background: var(--bg-subtle);
    color: var(--text);
}

/* ===== Modals ===== */
.modal-overlay {
    position: fixed; inset: 0; z-index: 100;
    background: rgba(0,0,0,0.6);
    display: none; align-items: center; justify-content: center;
    backdrop-filter: blur(4px);
}
.modal-overlay.open { display: flex; }
.modal {
    background: var(--bg-subtle);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 28px;
    max-width: 460px;
    width: 90%;
    box-shadow: var(--shadow);
    animation: modalIn 0.2s var(--ease);
}
@keyframes modalIn {
    from { opacity: 0; transform: scale(0.95) translateY(10px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}
.modal-title {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--text);
}
.modal-input {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: var(--surface);
    color: var(--text);
    font-family: var(--font);
    font-size: 14px;
    outline: none;
    margin-bottom: 12px;
}
.modal-input:focus { border-color: var(--border-focus); }
.modal-textarea {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: var(--surface);
    color: var(--text);
    font-family: var(--font);
    font-size: 14px;
    outline: none;
    resize: vertical;
    min-height: 80px;
    margin-bottom: 12px;
}
.modal-textarea:focus { border-color: var(--border-focus); }
.expand-textarea {
    width: 100%;
    box-sizing: border-box;
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: var(--bg);
    color: var(--text);
    font-family: var(--font);
    font-size: 14px;
    line-height: 1.7;
    outline: none;
    resize: vertical;
    min-height: 200px;
    margin-bottom: 12px;
}
.expand-textarea:focus { border-color: var(--border-focus); }
/* Chapter detail modal */
.ch-detail-header {
    display: flex; align-items: center; justify-content: space-between;
    margin-bottom: 16px;
}
.ch-detail-label {
    font-size: 20px; font-weight: 800; color: var(--accent);
}
.ch-detail-close {
    background: none; border: none; font-size: 24px; cursor: pointer;
    color: var(--text-muted); padding: 0 4px; line-height: 1;
}
.ch-detail-close:hover { color: var(--text); }
.ch-detail-field { margin-bottom: 12px; }
.ch-detail-field:last-child { margin-bottom: 0; }
.modal-actions {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
    margin-top: 20px;
}
.modal-btn {
    padding: 10px 20px;
    border-radius: 10px;
    font-family: var(--font);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s var(--ease);
    border: none;
}
.modal-btn:active { transform: scale(0.96); }
.modal-btn-cancel {
    background: var(--surface);
    color: var(--text-secondary);
    border: 1px solid var(--border);
}
.modal-btn-cancel:hover { background: var(--surface-hover); color: var(--text); }
.modal-btn-primary {
    background: var(--gradient-btn);
    color: #fff;
}
.modal-btn-primary:hover { background: var(--gradient-btn-hover); }
.modal-label {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 6px;
    display: block;
}

/* Mode selector in new project modal */
.mode-selector {
    display: flex;
    gap: 10px;
    margin-bottom: 16px;
}
.mode-option {
    flex: 1;
    padding: 14px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--surface);
    cursor: pointer;
    text-align: center;
    transition: all 0.15s;
}
.mode-option:hover { border-color: var(--border-focus); }
.mode-option.selected { border-color: var(--accent); background: rgba(124,108,240,0.1); }
.mode-option-icon { font-size: 24px; margin-bottom: 6px; }
.mode-option-label { font-size: 13px; font-weight: 600; color: var(--text); }
.mode-option-desc { font-size: 11px; color: var(--text-muted); margin-top: 4px; }

/* Import modal */
.drop-zone {
    border: 2px dashed var(--border);
    border-radius: var(--radius);
    padding: 40px 20px;
    text-align: center;
    color: var(--text-muted);
    font-size: 14px;
    transition: all 0.2s;
    cursor: pointer;
    margin-bottom: 12px;
}
.drop-zone:hover { border-color: var(--border-focus); color: var(--text-secondary); }
.drop-zone.drag-over {
    border-color: var(--accent);
    background: rgba(124,108,240,0.08);
    color: var(--accent);
}
.drop-zone-hint {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 8px;
}
.drop-zone-formats {
    font-size: 11px;
    color: var(--text-muted);
    margin-top: 4px;
}
.import-divider {
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 16px 0;
    color: var(--text-muted);
    font-size: 12px;
}
.import-divider::before, .import-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border);
}

/* Export modal */
.export-formats {
    display: flex;
    gap: 10px;
}
.export-format-btn {
    flex: 1;
    padding: 16px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--surface);
    color: var(--text);
    font-family: var(--font);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    text-align: center;
    transition: all 0.15s;
}
.export-format-btn:hover { border-color: var(--accent); background: rgba(124,108,240,0.08); }
.export-format-desc {
    font-size: 11px;
    color: var(--text-muted);
    margin-top: 4px;
    font-weight: 400;
}
.export-section-label {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}
.export-divider {
    border-top: 1px solid var(--border);
    margin: 14px 0;
}
.export-backup-btn {
    width: 100%;
}
.export-checkbox-label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 8px;
    cursor: pointer;
}
.export-checkbox-label input[type="checkbox"] {
    margin: 0;
}

/* ===== Toast ===== */
#toast {
    position: fixed;
    bottom: calc(24px + env(safe-area-inset-bottom, 0px));
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    padding: 12px 24px;
    background: var(--bg-subtle);
    border: 1px solid var(--border);
    border-radius: 12px;
    color: var(--text);
    font-size: 13px;
    font-weight: 600;
    box-shadow: var(--shadow);
    z-index: 200;
    transition: transform 0.3s var(--ease);
    pointer-events: none;
}
#toast.show { transform: translateX(-50%) translateY(0); }

/* ===== Toast Action (C3/C4 summary/recap prompt) ===== */
.toast-action {
    position: fixed;
    bottom: calc(24px + env(safe-area-inset-bottom, 0px));
    left: 50%;
    transform: translateX(-50%) translateY(120px);
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 16px;
    background: var(--bg-subtle);
    border: 1px solid var(--accent);
    border-radius: 12px;
    color: var(--text);
    font-size: 13px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.15);
    z-index: 201;
    transition: transform 0.3s var(--ease);
    max-width: 90vw;
}
.toast-action.show { transform: translateX(-50%) translateY(0); }
.toast-action span { flex: 1; min-width: 0; }
.toast-action-btn {
    padding: 6px 14px;
    border-radius: 8px;
    border: none;
    background: var(--accent);
    color: #fff;
    font-size: 12px;
    font-weight: 600;
    font-family: var(--font);
    cursor: pointer;
    white-space: nowrap;
    transition: filter 0.15s;
}
.toast-action-btn:hover { filter: brightness(1.1); }
.toast-action-btn:disabled { opacity: 0.7; cursor: default; }
.toast-dismiss {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 18px;
    cursor: pointer;
    padding: 0 4px;
    line-height: 1;
    font-family: var(--font);
}
.toast-dismiss:hover { color: var(--text); }

/* ===== Progression Suggestion Panel ===== */
.prog-suggest-panel {
    position: fixed;
    bottom: 20px;
    right: 340px;
    width: 360px;
    max-height: 420px;
    overflow-y: auto;
    background: var(--surface-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.18);
    z-index: 9000;
    font-size: 13px;
    opacity: 1;
    animation: progSlideIn 0.3s ease forwards;
}
@keyframes progSlideIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}
.prog-suggest-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 14px;
    border-bottom: 1px solid var(--border);
    font-weight: 600;
    font-size: 13px;
}
.prog-suggest-close {
    background: none;
    border: none;
    font-size: 18px;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0 4px;
    line-height: 1;
}
.prog-suggest-close:hover { color: var(--text); }
.prog-suggest-item {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    gap: 8px;
    padding: 10px 14px;
    border-bottom: 1px solid var(--border);
    transition: opacity 0.3s, background 0.3s;
}
.prog-suggest-item .prog-suggest-diff {
    order: 3;
    flex-basis: 100%;
}
.prog-suggest-item.accepted { background: #d4edda40; opacity: 0.7; }
.prog-suggest-item.rejected { opacity: 0.35; }
.prog-suggest-info {
    flex: 1;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 4px;
    min-width: 0;
}
.prog-suggest-entry {
    font-weight: 600;
    color: var(--accent);
    font-size: 12px;
}
.prog-suggest-content {
    width: 100%;
    color: var(--text);
    font-size: 12px;
    line-height: 1.4;
}
.prog-suggest-evidence {
    display: block;
    font-size: 11px;
    color: var(--text-muted);
    font-style: italic;
    margin-top: 2px;
    line-height: 1.3;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.prog-suggest-actions {
    display: flex;
    gap: 4px;
    flex-shrink: 0;
    padding-top: 2px;
}
.prog-suggest-accept,
.prog-suggest-reject {
    width: 26px;
    height: 26px;
    border-radius: 50%;
    border: 1px solid var(--border);
    background: transparent;
    cursor: pointer;
    font-size: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s;
}
.prog-suggest-accept { color: #28a745; }
.prog-suggest-accept:hover { background: #d4edda; border-color: #28a745; }
.prog-suggest-reject { color: #dc3545; }
.prog-suggest-reject:hover { background: #f8d7da; border-color: #dc3545; }
.prog-suggest-accept:disabled,
.prog-suggest-reject:disabled { opacity: 0.3; cursor: default; }
.prog-suggest-accept-all {
    display: block;
    width: calc(100% - 28px);
    margin: 10px 14px;
    padding: 7px 0;
    border-radius: 6px;
    border: none;
    background: var(--accent);
    color: #fff;
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    text-align: center;
}
.prog-suggest-accept-all:hover { opacity: 0.9; }
/* Replacement diff block */
.prog-suggest-diff {
    width: 100%;
    margin: 6px 0 2px;
    padding: 6px 8px;
    border-radius: 6px;
    background: var(--bg);
    border: 1px solid var(--border);
    font-size: 11px;
    line-height: 1.4;
}
.prog-suggest-diff-label {
    font-weight: 600;
    color: var(--text-muted);
    font-size: 10px;
    text-transform: uppercase;
}
.prog-suggest-diff-old { color: #dc3545; text-decoration: line-through; opacity: 0.7; }
.prog-suggest-diff-arrow { text-align: center; color: var(--text-muted); font-size: 10px; padding: 1px 0; }
.prog-suggest-diff-new { color: #28a745; }
.prog-suggest-accept.prog-suggest-accept-warn {
    background: #fff3cd;
    border-color: #e67e22;
    color: #e67e22;
    font-weight: 700;
    animation: progWarnPulse 0.6s ease;
}
@keyframes progWarnPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.15); }
}
@media (max-width: 768px) {
    .prog-suggest-panel {
        right: 8px;
        left: 8px;
        bottom: 12px;
        width: auto;
        max-height: 50vh;
    }
}

/* ===== Progression Inbox Panel ===== */
.prog-inbox-overlay {
    position: fixed;
    inset: 0;
    z-index: 9500;
    background: rgba(0,0,0,0.45);
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.2s ease;
}
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}
.prog-inbox-panel {
    width: 460px;
    max-width: calc(100vw - 32px);
    max-height: 80vh;
    background: var(--surface-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    box-shadow: 0 12px 48px rgba(0,0,0,0.25);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    animation: progSlideIn 0.3s ease;
    font-size: 13px;
}
.prog-inbox-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 18px;
    border-bottom: 1px solid var(--border);
    font-weight: 700;
    font-size: 14px;
}
.prog-inbox-header button {
    background: none;
    border: none;
    font-size: 20px;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0 4px;
    line-height: 1;
}
.prog-inbox-header button:hover { color: var(--text); }
.prog-inbox-header {
    flex-shrink: 0;
}
.prog-inbox-body {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    padding: 0;
}
.prog-inbox-empty {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-muted);
    font-size: 13px;
}
.prog-inbox-group-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 18px;
    background: var(--surface);
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    position: sticky;
    top: 0;
    z-index: 1;
    gap: 8px;
}
.prog-inbox-group-header > span {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    min-width: 0;
}
.prog-inbox-group-actions {
    display: flex;
    gap: 6px;
    flex-shrink: 0;
}
.prog-inbox-group-actions button {
    font-size: 11px;
    padding: 3px 8px;
    border-radius: 4px;
    border: 1px solid var(--border);
    background: transparent;
    cursor: pointer;
    font-family: var(--font);
    color: var(--text-secondary);
    transition: all 0.15s;
    white-space: nowrap;
}
.prog-inbox-group-actions button:hover {
    background: var(--surface-card-hover);
}
.prog-inbox-group-actions .inbox-accept-group { color: #28a745; }
.prog-inbox-group-actions .inbox-accept-group:hover { background: #d4edda; border-color: #28a745; }
.prog-inbox-group-actions .inbox-dismiss-group { color: #dc3545; }
.prog-inbox-group-actions .inbox-dismiss-group:hover { background: #f8d7da; border-color: #dc3545; }
.prog-inbox-group-actions .inbox-accept-group-warn {
    background: #fff3cd; border-color: #e67e22; color: #e67e22; font-weight: 700;
}
.prog-inbox-item {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    gap: 8px;
    padding: 10px 18px;
    border-bottom: 1px solid var(--border);
    transition: opacity 0.3s, background 0.3s;
}
.prog-inbox-item .prog-suggest-diff {
    order: 3;
    flex-basis: 100%;
}
.prog-inbox-item.accepted { background: #d4edda40; opacity: 0.6; }
.prog-inbox-item.dismissed { opacity: 0.3; }
@media (max-width: 768px) {
    .prog-inbox-panel {
        max-width: calc(100vw - 16px);
        max-height: 85vh;
    }
    .prog-inbox-item { padding: 10px 14px; }
    .prog-inbox-group-header { padding: 8px 14px; }
}

/* ===== Mobile Overlay ===== */
.sidebar-overlay {
    position: fixed; inset: 0; z-index: 39;
    background: rgba(0,0,0,0.5);
    display: none;
}
.sidebar-overlay.show { display: block; }

/* ===== Mobile hamburger buttons ===== */
.mobile-toggle {
    display: none;
    width: 34px; height: 34px;
    border: none;
    border-radius: 8px;
    background: var(--surface);
    color: var(--text-secondary);
    cursor: pointer;
    align-items: center;
    justify-content: center;
    font-size: 16px;
}
.mobile-toggle:hover { background: var(--surface-hover); color: var(--text); }

/* ===== Floating AI Bar ===== */
.ai-fab {
    display: none;
    position: fixed;
    bottom: calc(16px + env(safe-area-inset-bottom, 0px));
    right: 16px;
    width: 44px; height: 44px;
    background: var(--accent); border: none;
    border-radius: 50%; z-index: 35;
    align-items: center; justify-content: center;
    box-shadow: 0 2px 12px rgba(0,0,0,0.2);
    transition: transform 0.3s, opacity 0.3s;
    cursor: pointer;
}
.ai-fab.hidden { transform: translateY(80px); opacity: 0; pointer-events: none; }
.ai-fab-input { display: none; }
.ai-fab-send {
    width: 44px; height: 44px; border: none; border-radius: 50%;
    background: transparent; color: #fff; cursor: pointer;
    display: flex; align-items: center; justify-content: center;
}

/* ===== Mobile Panel Close Button ===== */
.mobile-panel-close { display: none; }
.mobile-sidebar-header { display: none; }
.mobile-sidebar-actions { display: none; }

/* ===== Plan View ===== */
.plan-view {
    display: none;
    flex: 1;
    min-height: 0;
    flex-direction: column;
    overflow-y: auto;
    overflow-x: hidden;
}
.plan-view.active { display: flex; }
.editor-area.plan-mode .editor-page,
.editor-area.plan-mode #toolbar,
.editor-area.plan-mode .status-bar { display: none; }

/* Mode Switch Tabs */
.writer-mode-tabs {
    display: flex;
    align-items: center;
    gap: 2px;
    padding: 6px 12px 0;
    border-bottom: 1px solid var(--border);
    background: var(--bg-subtle);
    flex-shrink: 0;
}
.writer-mode-tab {
    padding: 7px 16px;
    border: none;
    background: none;
    color: var(--text-muted);
    font-family: var(--font);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    transition: all 0.2s var(--ease);
    display: flex;
    align-items: center;
    gap: 5px;
}
.writer-mode-tab:hover { color: var(--text-secondary); }
.writer-mode-tab.active {
    color: var(--accent);
    border-bottom-color: var(--accent);
}
.writer-mode-tab svg { opacity: 0.7; }
.writer-mode-tab.active svg { opacity: 1; }

/* Plan Header */
.plan-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 20px;
    position: sticky;
    top: 0;
    z-index: 2;
    border-bottom: 1px solid var(--border);
    background: var(--bg);
}
.plan-stats {
    display: flex;
    gap: 16px;
    font-size: 12px;
    color: var(--text-muted);
    font-weight: 500;
}
.plan-stat-value {
    color: var(--text);
    font-weight: 700;
    font-variant-numeric: tabular-nums;
}
.plan-actions {
    display: flex;
    gap: 6px;
}
.plan-action-btn {
    padding: 5px 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--surface);
    color: var(--text-secondary);
    font-family: var(--font);
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s var(--ease);
    display: flex;
    align-items: center;
    gap: 4px;
}
.plan-action-btn:hover {
    background: var(--surface-hover);
    color: var(--text);
    border-color: var(--accent);
}

/* Plan Grid — Arc Sections */
.plan-arc-section {
    grid-column: 1 / -1;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 4px 4px;
    margin-top: 4px;
    cursor: pointer;
    user-select: none;
}
.plan-arc-section:first-child { margin-top: 0; }
.plan-arc-chevron {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    color: var(--text-muted);
    transition: transform 0.15s var(--ease);
}
.plan-arc-section.collapsed .plan-arc-chevron { transform: rotate(-90deg); }
.plan-arc-title {
    font-size: 13px;
    font-weight: 700;
    color: var(--text-secondary);
}
.plan-arc-stats {
    font-size: 11px;
    color: var(--text-muted);
    margin-left: auto;
}
.plan-arc-title[contenteditable="true"] {
    outline: none;
    background: var(--surface);
    border-radius: 4px;
    padding: 2px 6px;
    box-shadow: inset 0 0 0 1px var(--accent);
}
.plan-arc-add, .plan-arc-del {
    border: none;
    border-radius: 6px;
    background: transparent;
    color: var(--text-muted);
    font-family: var(--font);
    font-size: 11px;
    font-weight: 600;
    cursor: pointer;
    padding: 3px 8px;
    opacity: 0;
    transition: opacity 0.15s, background 0.15s;
    flex-shrink: 0;
}
.plan-arc-section:hover .plan-arc-add,
.plan-arc-section:hover .plan-arc-del { opacity: 1; }
.plan-arc-add:hover { background: rgba(124,108,240,0.1); color: var(--accent); }
.plan-arc-del:hover { background: rgba(255,59,48,0.1); color: #ff6b6b; }
.plan-arc-section + .plan-card-hidden { display: none; }

/* Plan Grid Container */
.plan-grid {
    padding: 16px 20px 32px;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 12px;
    align-content: start;
}

/* Chapter Card */
.plan-card {
    background: var(--surface-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 0;
    transition: all 0.2s var(--ease);
    cursor: default;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}
.plan-card:hover {
    border-color: var(--accent);
    box-shadow: var(--shadow);
}
.plan-card.active {
    border-color: var(--accent);
    box-shadow: 0 0 0 1px var(--accent), var(--shadow-glow);
}

/* Card top accent bar */
.plan-card-bar {
    height: 3px;
    background: var(--border);
    transition: background 0.2s;
}
.plan-card[data-status="writing"] .plan-card-bar { background: #2563eb; }
.plan-card[data-status="done"] .plan-card-bar { background: var(--green); }
.plan-card[data-status="revised"] .plan-card-bar { background: #8e44ad; }
.plan-card.active .plan-card-bar {
    box-shadow: 0 0 0 1px var(--accent);
}

/* Card Header */
.plan-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 12px 0;
}
.plan-card-order {
    font-size: 11px;
    font-weight: 700;
    color: var(--text-muted);
    letter-spacing: 0.03em;
    font-variant-numeric: tabular-nums;
}
.plan-card-wc {
    font-size: 11px;
    color: var(--text-muted);
    font-variant-numeric: tabular-nums;
}
.plan-card-wc .wc-num {
    font-weight: 600;
    color: var(--text-secondary);
}

/* Card Title */
.plan-card-title {
    padding: 4px 12px 2px;
    font-size: 14px;
    font-weight: 700;
    color: var(--text);
    line-height: 1.3;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    min-height: 20px;
}
.plan-card-title:empty {
    color: var(--text-muted);
    font-weight: 400;
    font-style: italic;
}
.plan-card-title:empty::before {
    content: 'Nhấp đúp để đặt tên...';
    opacity: 0.5;
}

/* Card Notes (editable) */
.plan-card-notes {
    padding: 4px 12px 8px;
    flex: 1;
}
.plan-card-notes textarea {
    width: 100%;
    min-height: 52px;
    max-height: 140px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-family: var(--font);
    font-size: 12px;
    line-height: 1.5;
    resize: vertical;
    outline: none;
    padding: 4px 0;
}
.plan-card-notes textarea::placeholder { color: var(--text-muted); }
.plan-card-notes textarea:focus {
    color: var(--text);
}

/* Card Summary (read-only preview) */
.plan-card-summary {
    padding: 0 12px 8px;
    font-size: 11px;
    line-height: 1.5;
    color: var(--text-muted);
    max-height: 48px;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
}
.plan-card-summary:empty { display: none; }

/* Card Footer */
.plan-card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 6px 12px;
    border-top: 1px solid var(--border);
    background: var(--surface);
}
.plan-card-tags {
    display: flex;
    gap: 4px;
    flex-wrap: wrap;
    min-height: 20px;
}
.plan-card-tag {
    font-size: 10px;
    padding: 1px 6px;
    border-radius: 4px;
    font-weight: 600;
    line-height: 1.6;
}
.plan-card-tag.tag-notes {
    background: var(--green-soft);
    color: var(--green);
}
.plan-card-tag.tag-summary {
    background: var(--orange-soft);
    color: var(--orange);
}
.plan-card-tag.tag-prog {
    background: #e8daef;
    color: #8e44ad;
}
.plan-card-tag.tag-directive {
    background: #fce4ec;
    color: #c62828;
}
.plan-card-tag.tag-empty {
    background: var(--surface-hover);
    color: var(--text-muted);
}
.plan-card-edit {
    width: 28px;
    height: 28px;
    border: none;
    border-radius: 6px;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s;
    flex-shrink: 0;
}
.plan-card-edit:hover {
    background: var(--surface-hover);
    color: var(--accent);
}

/* Card status tag (clickable cycle) */
.plan-card-status {
    font-size: 10px;
    padding: 1px 8px;
    border-radius: 4px;
    font-weight: 600;
    line-height: 1.6;
    cursor: pointer;
    border: none;
    font-family: var(--font);
    transition: opacity 0.15s;
}
.plan-card-status:hover { opacity: 0.8; }
.plan-card-status[data-status="draft"] {
    background: var(--surface-hover);
    color: var(--text-muted);
}
.plan-card-status[data-status="writing"] {
    background: #dbeafe;
    color: #2563eb;
}
.plan-card-status[data-status="done"] {
    background: var(--green-soft);
    color: var(--green);
}
.plan-card-status[data-status="revised"] {
    background: #e8daef;
    color: #8e44ad;
}
[data-theme="dark"] .plan-card-status[data-status="writing"] {
    background: #1e3a5f;
    color: #60a5fa;
}
[data-theme="dark"] .plan-card[data-status="writing"] .plan-card-bar { background: #60a5fa; }
[data-theme="dark"] .plan-card-status[data-status="revised"] {
    background: #3b1f4e;
    color: #c084fc;
}
[data-theme="dark"] .plan-card[data-status="revised"] .plan-card-bar { background: #c084fc; }
[data-theme="dark"] .plan-card-tag.tag-directive {
    background: #3b1520;
    color: #ef9a9a;
}
[data-theme="dark"] .plan-card-tag.tag-prog {
    background: #2d1b3e;
    color: #ce93d8;
}

/* Drag-drop in plan grid */
.plan-card[draggable="true"] { cursor: grab; }
.plan-card.dragging {
    opacity: 0.4;
    transform: scale(0.97);
}
.plan-card.drag-over {
    border-color: var(--accent);
    box-shadow: 0 0 0 2px var(--accent);
}

/* Inline title editing */
.plan-card-title[contenteditable="true"] {
    outline: none;
    background: var(--surface);
    border-radius: 4px;
    padding: 4px 8px 2px;
    margin: 0 4px;
    box-shadow: inset 0 0 0 1px var(--accent);
    white-space: normal;
    overflow: visible;
    text-overflow: unset;
}

/* Expand button on card notes */
.plan-card-notes-header {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding: 0 12px;
}
.plan-card-expand {
    width: 22px;
    height: 22px;
    border: none;
    border-radius: 4px;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    opacity: 0;
    transition: opacity 0.15s;
    flex-shrink: 0;
}
.plan-card:hover .plan-card-expand,
.plan-card-expand:focus { opacity: 1; }
.plan-card-expand:hover {
    background: var(--surface-hover);
    color: var(--accent);
}

/* Plan empty state */
.plan-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 20px;
    grid-column: 1 / -1;
    text-align: center;
}
.plan-empty-icon {
    font-size: 48px;
    margin-bottom: 12px;
    opacity: 0.3;
}
.plan-empty-text {
    font-size: 14px;
    color: var(--text-muted);
    max-width: 300px;
    line-height: 1.6;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .sidebar-left, .sidebar-right {
        position: fixed;
        top: 0; bottom: 0; left: 0; right: 0;
        width: 100% !important;
        z-index: 50;
        transform: translateX(-100%);
        transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        box-shadow: none;
        padding-top: env(safe-area-inset-top, 0px);
        padding-bottom: env(safe-area-inset-bottom, 0px);
    }
    .sidebar-right { transform: translateX(100%); }
    .sidebar-left.open, .sidebar-right.open { transform: translateX(0); }
    .sidebar-left.collapsed, .sidebar-right.collapsed { width: 100% !important; }

    /* Remove stacking context so fixed sidebars participate in root z-index */
    .writer-main { z-index: auto; }

    .sidebar-toggle { display: none; }
    .sidebar-expand { display: none; }
    .sidebar-reopen { display: none !important; }
    .mobile-toggle { display: flex; }
    .editor-page { padding: 16px 8px; }
    .ql-editor { padding: 20px; }
    .status-bar { padding: 8px 12px; }
    #statusChapter { max-width: 120px; font-size: 11px; }
    #projectName { max-width: 140px; font-size: 13px; }
    .header-link-text { display: none; }
    .ai-fab { display: flex; }

    /* Overlay under full-screen panels */
    .sidebar-overlay { z-index: 49; }

    /* Mobile close buttons */
    .mobile-panel-close {
        display: flex; width: 40px; height: 40px;
        border: none; border-radius: 50%; background: var(--surface);
        color: var(--text); font-size: 18px; cursor: pointer;
        align-items: center; justify-content: center; flex-shrink: 0;
    }
    .mobile-sidebar-header {
        display: flex; align-items: center; justify-content: space-between;
        padding: 12px 16px; border-bottom: 1px solid var(--border);
        flex-shrink: 0;
    }
    .mobile-sidebar-header span {
        font-size: 15px; font-weight: 700; color: var(--text);
    }

    /* Mobile sidebar actions (New/Import/Export) */
    .mobile-sidebar-actions {
        display: flex; gap: 8px; padding: 10px 16px;
        border-bottom: 1px solid var(--border); flex-shrink: 0;
    }
    .mobile-sidebar-actions button {
        flex: 1; padding: 8px 10px; border-radius: 8px;
        border: 1px solid var(--border); background: var(--surface);
        color: var(--text-secondary); font-family: var(--font);
        font-size: 12px; font-weight: 600; cursor: pointer;
    }
    .mobile-sidebar-actions button:hover {
        background: var(--surface-hover); color: var(--text);
    }

    /* Header simplification — hide less-used buttons on mobile */
    #btnNewProject, #btnImport, #btnExport, .header-sep { display: none; }
    .desktop-only { display: none !important; }
    .mobile-more-wrap { display: block; }
    .mobile-more-wrap .dropdown-menu { min-width: 200px; }
    .mobile-more-wrap .dropdown-item { padding: 10px 14px; font-size: 14px; }

    /* Mobile header optimization — reduce clutter */
    .header-link[href="index.html"] { display: none; } /* "Trang dịch" has no icon, empty on mobile */
    #saveStatus { font-size: 0; gap: 0; } /* Dot only, hide "Đã lưu" text */
    .header-btn { padding: 6px 8px; } /* Tighter icon buttons */

    /* Formatting toolbar: horizontal scroll instead of 2-line wrap */
    .ql-toolbar.ql-snow {
        display: flex !important;
        flex-wrap: nowrap !important;
        overflow-x: auto;
        overflow-y: hidden;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        padding: 6px 12px !important;
    }
    .ql-toolbar.ql-snow::-webkit-scrollbar { display: none; }
    .ql-toolbar.ql-snow::after { display: none !important; } /* Remove clearfix */
    .ql-toolbar .ql-formats {
        display: inline-flex !important;
        flex-shrink: 0;
    }
    .ql-toolbar .ql-formats::after { display: none !important; }
    .ql-toolbar.ql-snow button { float: none !important; }

    /* Plan view mobile */
    .plan-grid {
        grid-template-columns: 1fr;
        padding: 12px 12px 24px;
        gap: 10px;
    }
    .plan-header { padding: 8px 12px; flex-wrap: wrap; gap: 8px; }
    .plan-stats { gap: 10px; }
    .plan-card-expand { opacity: 1; }
    .arc-header-actions { opacity: 1; }
    .plan-arc-add, .plan-arc-del { opacity: 1; }
    .writer-mode-tabs { padding: 4px 8px 0; }
    .writer-mode-tab { padding: 6px 12px; font-size: 12px; }
    #saveStatus { font-size: 11px; }

    /* Hit areas — larger touch targets */
    .mobile-toggle { width: 40px; height: 40px; }
    .info-tip { width: 36px; height: 36px; font-size: 14px; }
    .ai-header-gear { min-width: 40px; min-height: 40px; }
    .btn-gen { min-width: 40px; min-height: 36px; font-size: 16px; }
    .ai-action-btn { min-height: 36px; padding: 6px 12px; }
    .ai-mode-tab { min-height: 40px; }
    .ai-context label { min-height: 36px; display: flex; align-items: center; gap: 6px; }
    .session-card { padding: 12px 14px; }
    .session-card-del { width: 36px; height: 36px; font-size: 18px; display: flex; align-items: center; justify-content: center; }

    /* Copy button always visible on mobile (no hover) */
    .ai-msg .ai-msg-copy { opacity: 0.5; }

    /* Chapter meta: collapsible on mobile */
    .chapter-meta-toggle {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 10px 0 6px;
        cursor: pointer;
        -webkit-tap-highlight-color: transparent;
    }
    .chapter-meta-toggle span {
        font-size: 12px;
        font-weight: 700;
        color: var(--text-secondary);
        text-transform: uppercase;
        letter-spacing: 0.5px;
    }
    .meta-toggle-icon {
        transition: transform 0.2s;
        color: var(--text-muted);
    }
    .chapter-meta.meta-collapsed .meta-toggle-icon {
        transform: rotate(-90deg);
    }
    .chapter-meta.meta-collapsed .chapter-meta-field {
        display: none;
    }
}

@media (max-width: 480px) {
    .writer-header { gap: 6px; padding: env(safe-area-inset-top, 0px) 10px 0; }
    .header-btn span { display: none; }
    .modal { padding: 20px; }
}

/* ===== Worldbuilding Panel ===== */
.world-header-row { display: flex; align-items: center; gap: 8px; padding: 12px 16px 4px; }
.world-header-title { flex: 1; font-size: 13px; font-weight: 600; color: var(--text-secondary); }
.world-header-btn { width: 28px; height: 28px; border-radius: 6px; border: 1px solid var(--border); background: transparent; color: var(--text-secondary); font-size: 14px; cursor: pointer; display: flex; align-items: center; justify-content: center; }
.world-header-btn:hover { background: var(--surface-hover); color: var(--accent); }
.world-search-bar { padding: 4px 16px; }
.world-tabs { display: flex; gap: 4px; padding: 8px 16px; flex-wrap: wrap; }
.world-tab { padding: 5px 10px; border-radius: 16px; border: 1px solid var(--border); background: transparent; color: var(--text-secondary); font-size: 12px; cursor: pointer; transition: all .15s; white-space: nowrap; }
.world-tab:hover { background: var(--bg-subtle); }
.world-tab.active { background: var(--accent); color: #fff; border-color: var(--accent); }
.world-budget-bar { padding: 2px 16px 6px; display: flex; align-items: center; gap: 8px; }
.world-budget-track { flex: 1; height: 4px; border-radius: 2px; background: var(--border); overflow: hidden; }
.world-budget-fill { height: 100%; border-radius: 2px; transition: width .3s, background .3s; }
.world-budget-text { font-size: 11px; color: var(--text-muted); white-space: nowrap; }
.world-entry-list { flex: 1; overflow-y: auto; padding: 0 8px 8px; }
.world-entry { margin-bottom: 4px; border-radius: 8px; border: 1px solid var(--border); background: var(--surface-card); transition: all .15s; }
.world-entry.expanded { border-color: var(--border-focus); }
.world-entry.dragging { opacity: 0.5; }
.world-entry.drag-over { border-color: var(--accent); border-style: dashed; }
.world-entry.drag-over-top { border-top: 2px solid var(--accent); }
.world-entry.drag-over-bottom { border-bottom: 2px solid var(--accent); }
.world-entry-header { display: flex; align-items: center; gap: 6px; padding: 10px 12px; cursor: pointer; font-size: 13px; }
.world-chevron { font-size: 10px; color: var(--text-muted); width: 12px; flex-shrink: 0; text-align: center; }
.world-drag { cursor: grab; color: var(--text-muted); font-size: 12px; opacity: 0; transition: opacity .15s; flex-shrink: 0; }
.world-entry:hover .world-drag { opacity: 1; }
.world-entry-title { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--text); }
.world-mode-icon { font-size: 10px; flex-shrink: 0; cursor: pointer; padding: 2px 4px; border-radius: 4px; transition: background .15s; }
.world-mode-icon:hover { background: var(--surface-hover); }
.world-entry-delete { opacity: 0; width: 20px; height: 20px; border-radius: 4px; background: transparent; border: none; color: var(--text-muted); cursor: pointer; font-size: 16px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.world-entry:hover .world-entry-delete { opacity: 1; }
.world-entry-delete:hover { color: #ff6b6b; background: rgba(255,59,48,0.1); }
.world-entry-form { padding: 4px 12px 12px; display: flex; flex-direction: column; gap: 8px; }
.world-field { display: flex; flex-direction: column; gap: 3px; }
.world-field label { font-size: 11px; color: var(--text-muted); font-weight: 600; }
.world-input { width: 100%; box-sizing: border-box; padding: 7px 10px; border-radius: 6px; border: 1px solid var(--border); background: var(--bg); color: var(--text); font-size: 13px; outline: none; transition: border-color .15s; font-family: inherit; }
.world-input:focus { border-color: var(--border-focus); }
.world-select { cursor: pointer; }
.world-textarea { resize: vertical; min-height: 48px; line-height: 1.5; }
.world-token-est { font-size: 11px; color: var(--text-muted); text-align: right; }
.world-empty { padding: 32px 16px; text-align: center; color: var(--text-muted); font-size: 13px; line-height: 1.6; }
.world-empty-link { color: var(--accent); text-decoration: underline; cursor: pointer; font-weight: 600; }
.world-empty-link:hover { opacity: 0.8; }
.world-hint { font-size: 11px; color: var(--text-muted); line-height: 1.5; margin-top: 2px; }
.world-rel-empty-hint { font-size: 11px; color: var(--text-muted); padding: 4px 0; }
.btn-add-chapter { display: flex; align-items: center; gap: 6px; margin: 0 16px 12px; padding: 8px; border: 1px dashed var(--border); border-radius: var(--radius); background: transparent; color: var(--accent); font-size: 12px; cursor: pointer; justify-content: center; }
.btn-add-chapter:hover { background: var(--accent); color: #fff; border-style: solid; }
.world-activation-row { flex-direction: row; align-items: center; gap: 8px; }
.world-activation-row label { margin-bottom: 0; flex-shrink: 0; }
.world-activation-row select { flex: 1; padding: 5px 8px; font-size: 12px; }
.world-keywords-field { }
.world-kw-container { display: flex; flex-wrap: wrap; gap: 4px; padding: 4px; border: 1px solid var(--border); border-radius: 6px; background: var(--bg); min-height: 32px; align-items: center; }
.world-kw-chip { display: inline-flex; align-items: center; gap: 2px; padding: 2px 8px; border-radius: 12px; background: var(--accent-glow); color: var(--text); font-size: 11px; }
.world-kw-del { cursor: pointer; margin-left: 2px; color: var(--text-muted); font-size: 13px; line-height: 1; }
.world-kw-del:hover { color: #ff6b6b; }
.world-kw-input { border: none; background: transparent; outline: none; font-size: 12px; color: var(--text); flex: 1; min-width: 80px; padding: 2px 4px; font-family: inherit; }
.world-relations { }
.world-rel-chips { display: flex; flex-wrap: wrap; gap: 4px; align-items: center; }
.world-rel-chip { display: inline-flex; align-items: center; gap: 4px; padding: 3px 8px; border-radius: 12px; background: var(--surface); border: 1px solid var(--border); font-size: 11px; cursor: pointer; transition: all .15s; }
.world-rel-chip:hover { border-color: var(--accent); background: var(--accent-glow); }
.world-rel-name { color: var(--accent); font-weight: 500; }
.world-rel-label { color: var(--text-muted); font-size: 10px; }
.world-rel-del { color: var(--text-muted); cursor: pointer; font-size: 13px; line-height: 1; margin-left: 2px; }
.world-rel-del:hover { color: #ff6b6b; }
.world-rel-add { padding: 3px 10px; border-radius: 12px; border: 1px dashed var(--border); background: transparent; color: var(--text-muted); font-size: 11px; cursor: pointer; }
.world-rel-add:hover { color: var(--accent); border-color: var(--accent); }
.world-rel-picker-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.3); z-index: 9999; display: flex; align-items: center; justify-content: center; }
.world-rel-picker { background: var(--bg); border: 1px solid var(--border); border-radius: 12px; padding: 12px; width: 280px; max-height: 360px; display: flex; flex-direction: column; gap: 8px; box-shadow: var(--shadow); }
.world-rel-picker-list { flex: 1; overflow-y: auto; max-height: 200px; }
.world-rel-picker-item { padding: 6px 10px; border-radius: 6px; cursor: pointer; font-size: 12px; color: var(--text); }
.world-rel-picker-item:hover { background: var(--surface-hover); }
.world-rel-picker-item.selected { background: var(--accent-glow); border: 1px solid var(--accent); }
.world-rel-label-row { display: flex; gap: 6px; align-items: center; }
.world-rel-label-row input { flex: 1; font-size: 12px; }
.world-rel-confirm { padding: 6px 12px; border-radius: 6px; border: none; background: var(--accent); color: #fff; font-size: 12px; cursor: pointer; }
.world-rel-confirm:hover { opacity: 0.9; }
.world-progressions { }
.world-prog-list { display: flex; flex-direction: column; gap: 4px; }
.world-prog-empty { color: var(--text-muted); font-size: 11px; font-style: italic; }
.world-prog-item { display: flex; align-items: center; gap: 6px; padding: 4px 8px; border-radius: 6px; background: var(--surface); border: 1px solid var(--border); font-size: 11px; flex-wrap: wrap; }
.world-prog-ch { color: var(--accent); font-weight: 600; white-space: nowrap; min-width: 42px; }
.world-prog-mode { display: inline-flex; align-items: center; justify-content: center; width: 18px; height: 18px; border-radius: 50%; font-size: 11px; font-weight: 700; line-height: 1; flex-shrink: 0; }
.world-prog-mode.mode-add { background: #d4edda; color: #28a745; }
.world-prog-mode.mode-replace { background: #fff3cd; color: #e67e22; }
.world-prog-facet { display: inline-block; padding: 1px 6px; border-radius: 4px; font-size: 10px; font-weight: 600; background: var(--accent-glow, #e8f0fe); color: var(--accent, #1a73e8); white-space: nowrap; max-width: 120px; overflow: hidden; text-overflow: ellipsis; }
.world-prog-facet.facet-general { background: var(--bg-subtle, #f0f0f0); color: var(--text-muted); border: 1px dashed var(--border); }
.world-prog-preview { flex: 1; color: var(--text); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.world-prog-evidence { flex-basis: 100%; font-size: 10px; color: var(--text-muted); font-style: italic; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; padding-left: 66px; margin-top: -2px; }
.world-prog-edit { cursor: pointer; color: var(--text-muted); font-size: 13px; }
.world-prog-edit:hover { color: var(--accent); }
.world-prog-del { cursor: pointer; color: var(--text-muted); font-size: 13px; }
.world-prog-del:hover { color: #ff6b6b; }
.world-prog-add { padding: 4px 10px; border-radius: 6px; border: 1px dashed var(--border); background: transparent; color: var(--text-muted); font-size: 11px; cursor: pointer; align-self: flex-start; }
.world-prog-add:hover { color: var(--accent); border-color: var(--accent); }
.world-prog-editor { background: var(--bg); border: 1px solid var(--border); border-radius: 12px; padding: 16px; width: 320px; display: flex; flex-direction: column; gap: 10px; box-shadow: var(--shadow); }
.world-prog-editor-title { font-size: 14px; font-weight: 600; color: var(--text); }
.world-prog-btn-row { display: flex; gap: 8px; justify-content: flex-end; }
.world-prog-save { padding: 6px 16px; border-radius: 6px; border: none; background: var(--accent); color: #fff; font-size: 12px; cursor: pointer; }
.world-prog-save:hover { opacity: 0.9; }
.world-prog-cancel { padding: 6px 12px; border-radius: 6px; border: 1px solid var(--border); background: transparent; color: var(--text-muted); font-size: 12px; cursor: pointer; }
.world-prog-cancel:hover { color: var(--text); border-color: var(--text-muted); }
.world-tag-bar { display: flex; gap: 4px; padding: 0 16px 4px; flex-wrap: wrap; }
.world-tag-chip { padding: 2px 8px; border-radius: 10px; border: 1px solid var(--border); background: transparent; color: var(--text-muted); font-size: 11px; cursor: pointer; transition: all .15s; white-space: nowrap; }
.world-tag-chip:hover { background: var(--bg-subtle); color: var(--text); }
.world-tag-chip.active { background: var(--accent-glow); border-color: var(--accent); color: var(--accent); }
.world-entry-tags { display: none; }
.world-timeline-modal { background: var(--bg); border: 1px solid var(--border); border-radius: 12px; width: 400px; max-width: 90vw; max-height: 80vh; display: flex; flex-direction: column; box-shadow: var(--shadow); }
.world-timeline-header { display: flex; align-items: center; justify-content: space-between; padding: 12px 16px; border-bottom: 1px solid var(--border); font-weight: 600; font-size: 14px; color: var(--text); }
.world-timeline-list { flex: 1; overflow-y: auto; padding: 8px; }
.world-timeline-divider { padding: 8px 10px 4px; font-size: 12px; font-weight: 600; color: var(--accent); border-bottom: 1px solid var(--border); margin-bottom: 4px; margin-top: 8px; }
.world-timeline-divider:first-child { margin-top: 0; }
.world-timeline-item { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; padding: 6px 10px; border-radius: 6px; cursor: pointer; transition: background .15s; }
.world-timeline-item:hover { background: var(--surface-hover); }
.world-timeline-entry { font-weight: 600; font-size: 12px; color: var(--text); }
.world-timeline-content { flex-basis: 100%; font-size: 11px; color: var(--text-secondary); line-height: 1.4; padding-left: 24px; }
.world-timeline-evidence { flex-basis: 100%; font-size: 10px; color: var(--text-muted); font-style: italic; padding-left: 24px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.world-timeline-footer { padding: 8px 16px; border-top: 1px solid var(--border); font-size: 11px; color: var(--text-muted); text-align: center; }