/* ==========================================================================
   Markdown Studio — fully local, themeable live editor
   ========================================================================== */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* --- Theme tokens --------------------------------------------------------- */
:root {
    --font-ui: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'SF Mono', Consolas, monospace;
    --radius: 14px;
    --radius-sm: 9px;
    --speed: 0.25s;
    --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* Aurora (default) */
[data-theme="aurora"] {
    --bg-0: #06030f; --bg-1: #0d0726; --bg-2: rgba(30, 18, 66, 0.55);
    --surface: rgba(20, 12, 45, 0.72); --surface-2: rgba(38, 24, 78, 0.6);
    --border: rgba(168, 85, 247, 0.28); --border-strong: rgba(168, 85, 247, 0.5);
    --text: #ece9ff; --text-muted: #a99fce;
    --accent: #a855f7; --accent-2: #22d3ee; --accent-3: #ec4899;
    --code-bg: rgba(10, 6, 24, 0.75); --glow: rgba(168, 85, 247, 0.35);
    --b1: #a855f7; --b2: #22d3ee; --b3: #ec4899;
    color-scheme: dark;
}
/* Midnight */
[data-theme="midnight"] {
    --bg-0: #05070f; --bg-1: #0a1020; --bg-2: rgba(20, 30, 55, 0.55);
    --surface: rgba(14, 22, 42, 0.75); --surface-2: rgba(24, 36, 66, 0.6);
    --border: rgba(96, 165, 250, 0.25); --border-strong: rgba(96, 165, 250, 0.5);
    --text: #e6edff; --text-muted: #8ea3c8;
    --accent: #60a5fa; --accent-2: #38bdf8; --accent-3: #818cf8;
    --code-bg: rgba(6, 12, 26, 0.8); --glow: rgba(96, 165, 250, 0.3);
    --b1: #3b82f6; --b2: #38bdf8; --b3: #6366f1;
    color-scheme: dark;
}
/* Solar (light) */
[data-theme="solar"] {
    --bg-0: #fdf6e3; --bg-1: #f4ecd6; --bg-2: rgba(255, 250, 235, 0.7);
    --surface: rgba(255, 252, 244, 0.85); --surface-2: rgba(248, 240, 222, 0.8);
    --border: rgba(181, 137, 0, 0.28); --border-strong: rgba(181, 137, 0, 0.5);
    --text: #4a3f28; --text-muted: #93815a;
    --accent: #b58900; --accent-2: #cb4b16; --accent-3: #d33682;
    --code-bg: rgba(238, 226, 200, 0.7); --glow: rgba(181, 137, 0, 0.25);
    --b1: #e0b84c; --b2: #cb4b16; --b3: #d33682;
    color-scheme: light;
}
/* Nord */
[data-theme="nord"] {
    --bg-0: #2e3440; --bg-1: #3b4252; --bg-2: rgba(59, 66, 82, 0.6);
    --surface: rgba(46, 52, 64, 0.82); --surface-2: rgba(67, 76, 94, 0.6);
    --border: rgba(136, 192, 208, 0.3); --border-strong: rgba(136, 192, 208, 0.55);
    --text: #eceff4; --text-muted: #9aa7bd;
    --accent: #88c0d0; --accent-2: #81a1c1; --accent-3: #b48ead;
    --code-bg: rgba(36, 41, 51, 0.8); --glow: rgba(136, 192, 208, 0.25);
    --b1: #5e81ac; --b2: #88c0d0; --b3: #b48ead;
    color-scheme: dark;
}
/* Dracula */
[data-theme="dracula"] {
    --bg-0: #191a21; --bg-1: #282a36; --bg-2: rgba(40, 42, 54, 0.6);
    --surface: rgba(33, 34, 44, 0.85); --surface-2: rgba(68, 71, 90, 0.5);
    --border: rgba(189, 147, 249, 0.3); --border-strong: rgba(189, 147, 249, 0.55);
    --text: #f8f8f2; --text-muted: #a7abbe;
    --accent: #bd93f9; --accent-2: #8be9fd; --accent-3: #ff79c6;
    --code-bg: rgba(20, 21, 28, 0.85); --glow: rgba(189, 147, 249, 0.3);
    --b1: #bd93f9; --b2: #8be9fd; --b3: #ff79c6;
    color-scheme: dark;
}
/* Rosé Pine */
[data-theme="rose"] {
    --bg-0: #191724; --bg-1: #1f1d2e; --bg-2: rgba(38, 35, 58, 0.6);
    --surface: rgba(25, 23, 36, 0.85); --surface-2: rgba(38, 35, 58, 0.6);
    --border: rgba(235, 188, 186, 0.28); --border-strong: rgba(235, 188, 186, 0.5);
    --text: #e0def4; --text-muted: #a8a3c4;
    --accent: #ebbcba; --accent-2: #9ccfd8; --accent-3: #c4a7e7;
    --code-bg: rgba(20, 18, 30, 0.85); --glow: rgba(235, 188, 186, 0.25);
    --b1: #c4a7e7; --b2: #9ccfd8; --b3: #ebbcba;
    color-scheme: dark;
}
/* Matrix */
[data-theme="matrix"] {
    --bg-0: #000000; --bg-1: #030f03; --bg-2: rgba(6, 26, 6, 0.6);
    --surface: rgba(3, 15, 3, 0.85); --surface-2: rgba(8, 30, 8, 0.6);
    --border: rgba(0, 255, 102, 0.28); --border-strong: rgba(0, 255, 102, 0.5);
    --text: #b6ffcb; --text-muted: #4caf6a;
    --accent: #00ff66; --accent-2: #39ff14; --accent-3: #7cff9b;
    --code-bg: rgba(0, 10, 0, 0.85); --glow: rgba(0, 255, 102, 0.35);
    --b1: #00ff66; --b2: #008f39; --b3: #39ff14;
    color-scheme: dark;
}
/* Paper (light) */
[data-theme="paper"] {
    --bg-0: #ffffff; --bg-1: #f5f6f8; --bg-2: rgba(245, 246, 248, 0.8);
    --surface: rgba(255, 255, 255, 0.92); --surface-2: rgba(240, 242, 245, 0.85);
    --border: rgba(20, 30, 50, 0.14); --border-strong: rgba(20, 30, 50, 0.3);
    --text: #1a2233; --text-muted: #667085;
    --accent: #2563eb; --accent-2: #0891b2; --accent-3: #db2777;
    --code-bg: rgba(240, 242, 246, 0.9); --glow: rgba(37, 99, 235, 0.12);
    --b1: #93c5fd; --b2: #a5f3fc; --b3: #fbcfe8;
    color-scheme: light;
}
/* Sunset */
[data-theme="sunset"] {
    --bg-0: #1a0a1e; --bg-1: #2b0f2e; --bg-2: rgba(60, 20, 55, 0.6);
    --surface: rgba(40, 14, 42, 0.82); --surface-2: rgba(70, 24, 60, 0.6);
    --border: rgba(251, 146, 60, 0.3); --border-strong: rgba(251, 146, 60, 0.55);
    --text: #ffe8d6; --text-muted: #d3a08c;
    --accent: #fb923c; --accent-2: #f472b6; --accent-3: #fbbf24;
    --code-bg: rgba(26, 8, 24, 0.85); --glow: rgba(251, 146, 60, 0.3);
    --b1: #fb923c; --b2: #f472b6; --b3: #fbbf24;
    color-scheme: dark;
}
/* Cyberpunk */
[data-theme="cyberpunk"] {
    --bg-0: #0a0a12; --bg-1: #12071e; --bg-2: rgba(40, 10, 60, 0.6);
    --surface: rgba(18, 7, 30, 0.85); --surface-2: rgba(40, 10, 60, 0.6);
    --border: rgba(255, 231, 0, 0.3); --border-strong: rgba(255, 0, 200, 0.55);
    --text: #f6f6ff; --text-muted: #b39ad6;
    --accent: #ffe600; --accent-2: #00f0ff; --accent-3: #ff00c8;
    --code-bg: rgba(8, 4, 16, 0.9); --glow: rgba(255, 0, 200, 0.35);
    --b1: #ff00c8; --b2: #00f0ff; --b3: #ffe600;
    color-scheme: dark;
}

/* --- Base ----------------------------------------------------------------- */
html, body { height: 100%; }

/* Themed scrollbars ------------------------------------------------------- */
* {
    scrollbar-width: thin;
    scrollbar-color: var(--border-strong) transparent;
}
::-webkit-scrollbar { width: 11px; height: 11px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
    background: linear-gradient(var(--accent), var(--accent-3));
    border: 3px solid transparent;
    border-radius: 999px;
    background-clip: padding-box;
    transition: background var(--speed) var(--ease);
}
::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(var(--accent-2), var(--accent));
    background-clip: padding-box;
}
::-webkit-scrollbar-corner { background: transparent; }

body {
    font-family: var(--font-ui);
    color: var(--text);
    background: var(--bg-0);
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow: hidden;
    transition: background var(--speed) var(--ease), color var(--speed) var(--ease);
}

/* Animated backdrop */
.app-bg { position: fixed; inset: 0; z-index: -1; overflow: hidden; pointer-events: none; }
.blob {
    position: absolute; width: 46vw; height: 46vw; border-radius: 50%;
    filter: blur(90px); opacity: 0.4; mix-blend-mode: screen;
    animation: drift 24s var(--ease) infinite alternate;
}
.blob.b1 { background: radial-gradient(circle, var(--b1), transparent 65%); top: -12vw; left: -8vw; }
.blob.b2 { background: radial-gradient(circle, var(--b2), transparent 65%); bottom: -14vw; right: -6vw; animation-delay: -8s; }
.blob.b3 { background: radial-gradient(circle, var(--b3), transparent 65%); top: 30%; left: 55%; animation-delay: -15s; }
@keyframes drift { from { transform: translate(0,0) scale(1);} to { transform: translate(5vw,4vw) scale(1.2);} }

.grid-overlay {
    position: absolute; inset: 0; opacity: 0.05;
    background-image:
        linear-gradient(var(--text) 1px, transparent 1px),
        linear-gradient(90deg, var(--text) 1px, transparent 1px);
    background-size: 44px 44px;
    mask-image: radial-gradient(ellipse at 50% 0%, black, transparent 80%);
}

/* --- Top bar -------------------------------------------------------------- */
.topbar {
    display: flex; align-items: center; gap: 14px;
    padding: 10px 16px;
    background: var(--surface);
    backdrop-filter: blur(18px) saturate(1.4);
    -webkit-backdrop-filter: blur(18px) saturate(1.4);
    border-bottom: 1px solid var(--border);
    flex-wrap: wrap;
    z-index: 20;
}

.brand { display: flex; align-items: center; gap: 10px; }
.brand-mark {
    display: grid; place-items: center;
    width: 38px; height: 38px; border-radius: 11px;
    font-size: 20px;
    background: linear-gradient(135deg, var(--accent), var(--accent-3));
    color: #fff; box-shadow: 0 6px 18px var(--glow);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-text strong { font-size: 15px; letter-spacing: 0.2px; }
.brand-text small { font-size: 10px; color: var(--text-muted); letter-spacing: 1px; text-transform: uppercase; }

.toolbar { display: flex; align-items: center; gap: 3px; flex-wrap: wrap; margin: 0 auto; }
.toolbar .sep { width: 1px; height: 22px; background: var(--border); margin: 0 5px; }

.toolbar button, .actions button, .file-open {
    font: inherit; color: var(--text);
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 7px 10px; min-width: 34px; height: 34px;
    display: inline-flex; align-items: center; justify-content: center;
    cursor: pointer; font-size: 13px;
    transition: transform var(--speed) var(--ease), background var(--speed) var(--ease),
        border-color var(--speed) var(--ease), box-shadow var(--speed) var(--ease);
}
.toolbar button:hover, .actions button:hover, .file-open:hover {
    background: var(--accent); color: #fff; border-color: var(--accent);
    transform: translateY(-2px); box-shadow: 0 6px 16px var(--glow);
}
.toolbar button:active, .actions button:active { transform: translateY(0) scale(0.96); }

.actions { display: flex; align-items: center; gap: 6px; margin-left: auto; }
.file-open { gap: 6px; white-space: nowrap; }
.file-open span { pointer-events: none; }
.actions .danger:hover { background: #ef4444; border-color: #ef4444; }

/* Dropdown menus */
.menu { position: relative; }
.menu-list {
    position: absolute; right: 0; top: calc(100% + 8px);
    min-width: 190px; padding: 6px;
    background: var(--surface); border: 1px solid var(--border);
    border-radius: var(--radius); box-shadow: 0 20px 45px rgba(0,0,0,0.4);
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    z-index: 40; display: flex; flex-direction: column; gap: 2px;
    animation: pop var(--speed) var(--ease);
}
.menu-list[hidden] { display: none; }
@keyframes pop { from { opacity: 0; transform: translateY(-6px) scale(0.98);} to { opacity: 1; transform: none;} }
.menu-list button {
    width: 100%; height: auto; justify-content: flex-start;
    padding: 9px 12px; background: transparent; border: none; border-radius: 9px;
    text-align: left; font-size: 13px;
}
.menu-list button:hover { background: var(--accent); color: #fff; transform: none; box-shadow: none; }
.menu-list button.active { border: 1px solid var(--border-strong); }
.swatch { width: 14px; height: 14px; border-radius: 4px; margin-right: 9px; flex: none;
    background: linear-gradient(135deg, var(--sw1), var(--sw2)); }

/* --- Workspace ------------------------------------------------------------ */
.workspace { flex: 1; display: flex; min-height: 0; padding: 14px; gap: 0; }

.pane {
    flex: 1 1 50%; min-width: 0; overflow: auto;
    background: var(--surface);
    border: 1px solid var(--border);
    backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
    box-shadow: 0 18px 44px rgba(0,0,0,0.28);
    transition: border-color var(--speed) var(--ease);
}
.editor-pane { border-radius: var(--radius) 0 0 var(--radius); }
.preview-pane { border-radius: 0 var(--radius) var(--radius) 0; padding: 30px 34px; }
.pane:focus-within { border-color: var(--border-strong); }

#markdown-input {
    width: 100%; height: 100%; resize: none; border: none; outline: none;
    background: transparent; color: var(--text);
    font-family: var(--font-mono); font-size: 15px; line-height: 1.7;
    padding: 26px 28px; tab-size: 2;
    caret-color: var(--accent-2);
}
#markdown-input::placeholder { color: var(--text-muted); opacity: 0.7; }

.divider {
    width: 8px; flex: none; cursor: col-resize; position: relative;
    background: transparent;
}
.divider::after {
    content: ""; position: absolute; inset: 0 3px; border-radius: 4px;
    background: var(--border); transition: background var(--speed) var(--ease);
}
.divider:hover::after, .divider.dragging::after { background: var(--accent); }

/* --- Status bar ----------------------------------------------------------- */
.statusbar {
    display: flex; align-items: center; justify-content: space-between;
    gap: 12px; padding: 7px 18px;
    background: var(--surface); border-top: 1px solid var(--border);
    backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px);
    font-size: 12px; color: var(--text-muted); flex-wrap: wrap;
}
.stats { display: flex; gap: 16px; flex-wrap: wrap; }
.stats span { display: inline-flex; align-items: center; gap: 5px; }
.status-right { display: flex; align-items: center; gap: 12px; }
.save-state { transition: color var(--speed) var(--ease); }
.save-state.saving { color: var(--accent-3); }
.save-state.saved { color: var(--accent-2); }

#toggle-preview {
    display: none; font: inherit; font-size: 12px; color: var(--text);
    background: var(--surface-2); border: 1px solid var(--border);
    border-radius: 8px; padding: 5px 11px; cursor: pointer;
}
#toggle-preview:hover { background: var(--accent); color: #fff; border-color: var(--accent); }

/* --- Rendered markdown ---------------------------------------------------- */
.markdown-body { font-size: 16px; line-height: 1.75; word-wrap: break-word; }
.markdown-body > *:first-child { margin-top: 0; }
.markdown-body h1, .markdown-body h2, .markdown-body h3,
.markdown-body h4, .markdown-body h5, .markdown-body h6 {
    line-height: 1.25; margin: 1.5em 0 0.6em; font-weight: 700; letter-spacing: -0.01em;
}
.markdown-body h1 { font-size: 2em; padding-bottom: 0.3em; border-bottom: 1px solid var(--border); }
.markdown-body h2 { font-size: 1.55em; padding-bottom: 0.25em; border-bottom: 1px solid var(--border); }
.markdown-body h3 { font-size: 1.28em; }
.markdown-body h4 { font-size: 1.1em; }
.markdown-body h5 { font-size: 1em; color: var(--text-muted); }
.markdown-body h6 { font-size: 0.9em; color: var(--text-muted); }
.markdown-body p { margin: 0 0 1em; }
.markdown-body a { color: var(--accent-2); text-decoration: none; border-bottom: 1px solid transparent; transition: border-color var(--speed); }
.markdown-body a:hover { border-color: var(--accent-2); }
.markdown-body strong { color: var(--text); font-weight: 700; }
.markdown-body ul, .markdown-body ol { margin: 0 0 1em; padding-left: 1.6em; }
.markdown-body li { margin: 0.25em 0; }
.markdown-body li.task { list-style: none; margin-left: -1.4em; }
.markdown-body li.task input { margin-right: 0.5em; accent-color: var(--accent); }
.markdown-body blockquote {
    margin: 0 0 1em; padding: 0.4em 1.1em; color: var(--text-muted);
    border-left: 3px solid var(--accent); background: var(--surface-2);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}
.markdown-body code {
    font-family: var(--font-mono); font-size: 0.88em;
    background: var(--code-bg); padding: 0.15em 0.45em; border-radius: 6px;
    border: 1px solid var(--border);
}
.markdown-body pre {
    margin: 0 0 1em; padding: 16px 18px; overflow: auto;
    background: var(--code-bg); border: 1px solid var(--border);
    border-radius: var(--radius-sm);
}
.markdown-body pre code { background: none; border: none; padding: 0; font-size: 0.86em; line-height: 1.6; }
.markdown-body hr { border: none; height: 1px; background: var(--border); margin: 1.8em 0; }
.markdown-body img { max-width: 100%; border-radius: var(--radius-sm); }
.markdown-body table { border-collapse: collapse; width: 100%; margin: 0 0 1em; overflow: hidden; }
.markdown-body th, .markdown-body td { border: 1px solid var(--border); padding: 8px 12px; text-align: left; }
.markdown-body th { background: var(--surface-2); font-weight: 700; }
.markdown-body tr:nth-child(even) td { background: var(--surface-2); }
.markdown-body kbd {
    font-family: var(--font-mono); font-size: 0.8em; padding: 2px 6px;
    border: 1px solid var(--border-strong); border-bottom-width: 2px;
    border-radius: 5px; background: var(--surface-2);
}

/* --- Focus & a11y --------------------------------------------------------- */
:focus-visible { outline: 2px solid var(--accent-2); outline-offset: 2px; border-radius: 6px; }

/* --- Responsive ----------------------------------------------------------- */
@media (max-width: 860px) {
    .workspace { flex-direction: column; padding: 10px; }
    .editor-pane { border-radius: var(--radius) var(--radius) 0 0; }
    .preview-pane { border-radius: 0 0 var(--radius) var(--radius); }
    .divider { display: none; }
    .toolbar { order: 3; width: 100%; justify-content: center; margin: 4px 0 0; }
    body.preview-hidden .preview-pane { display: none; }
    body:not(.preview-hidden) .editor-pane { display: none; }
    #toggle-preview { display: inline-flex; }
}

@media print {
    .topbar, .statusbar, .app-bg, .divider, .editor-pane { display: none !important; }
    body { height: auto; overflow: visible; background: #fff; color: #000; }
    .workspace { display: block; padding: 0; }
    .preview-pane { border: none; box-shadow: none; background: #fff; color: #000; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation: none !important; transition: none !important; }
}

/* --- Tab bar -------------------------------------------------------------- */
.tabbar {
    display: flex; align-items: stretch; gap: 4px; padding: 6px 12px 0;
    background: var(--surface); backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--border); overflow-x: auto; z-index: 15;
}
.tab {
    display: flex; align-items: center; gap: 8px; max-width: 220px;
    padding: 7px 8px 7px 13px; border-radius: 10px 10px 0 0;
    background: var(--surface-2); border: 1px solid var(--border); border-bottom: none;
    cursor: pointer; font-size: 13px; white-space: nowrap;
    transition: background var(--speed) var(--ease), color var(--speed) var(--ease);
}
.tab:hover { background: var(--bg-2); }
.tab.active { background: var(--bg-0); border-color: var(--border-strong);
    box-shadow: 0 -2px 12px var(--glow); color: var(--text); }
.tab.active::after { content: ""; position: absolute; }
.tab-name { overflow: hidden; text-overflow: ellipsis; }
.tab-rename { font: inherit; font-size: 13px; background: var(--bg-0); color: var(--text);
    border: 1px solid var(--accent); border-radius: 6px; padding: 2px 6px; width: 140px; }
.tab-close {
    display: grid; place-items: center; width: 18px; height: 18px; flex: none;
    border: none; border-radius: 5px; background: transparent; color: var(--text-muted);
    cursor: pointer; font-size: 15px; line-height: 1;
}
.tab-close:hover { background: #ef4444; color: #fff; }
#new-tab {
    flex: none; width: 34px; border: 1px dashed var(--border); background: transparent;
    color: var(--text-muted); border-radius: 10px 10px 0 0; cursor: pointer; font-size: 16px;
    margin-bottom: 0;
}
#new-tab:hover { background: var(--accent); color: #fff; border-style: solid; border-color: var(--accent); }

/* --- Find & replace bar --------------------------------------------------- */
.find-bar {
    display: flex; align-items: center; gap: 6px; padding: 8px 14px;
    background: var(--surface); border-bottom: 1px solid var(--border);
    backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px);
    z-index: 16; flex-wrap: wrap; animation: pop var(--speed) var(--ease);
}
.find-bar[hidden] { display: none; }
.find-bar .find-ico { opacity: 0.7; }
.find-bar input {
    font: inherit; font-size: 13px; color: var(--text); background: var(--surface-2);
    border: 1px solid var(--border); border-radius: 8px; padding: 6px 10px; min-width: 150px;
}
.find-bar input:focus { outline: none; border-color: var(--accent); }
.find-bar button {
    font: inherit; font-size: 12px; color: var(--text); background: var(--surface-2);
    border: 1px solid var(--border); border-radius: 8px; padding: 6px 10px; cursor: pointer;
    transition: background var(--speed) var(--ease);
}
.find-bar button:hover { background: var(--accent); color: #fff; border-color: var(--accent); }
.find-bar .sep { width: 1px; height: 22px; background: var(--border); margin: 0 4px; }
.find-count { font-size: 12px; color: var(--text-muted); min-width: 42px; text-align: center; }
.find-close { margin-left: auto; }

/* --- Drawers (TOC / lint) ------------------------------------------------- */
.workspace { position: relative; }
.drawer {
    position: absolute; top: 14px; right: 14px; bottom: 14px; width: min(320px, 78%);
    display: flex; flex-direction: column;
    background: var(--surface); border: 1px solid var(--border-strong);
    border-radius: var(--radius); box-shadow: -12px 0 44px rgba(0,0,0,0.4);
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    z-index: 30; animation: slideIn var(--speed) var(--ease);
}
.drawer[hidden] { display: none; }
@keyframes slideIn { from { opacity: 0; transform: translateX(20px); } to { opacity: 1; transform: none; } }
.drawer-head {
    display: flex; align-items: center; justify-content: space-between;
    padding: 12px 14px; border-bottom: 1px solid var(--border); font-size: 14px;
}
.drawer-close { border: none; background: transparent; color: var(--text-muted); cursor: pointer; font-size: 15px; }
.drawer-close:hover { color: var(--text); }
.drawer-body { padding: 10px; overflow: auto; display: flex; flex-direction: column; gap: 2px; }
.toc-empty { color: var(--text-muted); font-size: 13px; padding: 8px; }
#toc-list a {
    display: block; padding: 6px 10px; border-radius: 8px; font-size: 13px;
    color: var(--text); text-decoration: none; border-left: 2px solid transparent;
    transition: background var(--speed) var(--ease), border-color var(--speed) var(--ease);
    overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
#toc-list a:hover { background: var(--surface-2); border-left-color: var(--accent); }
#toc-list .toc-l1 { font-weight: 700; }
#toc-list .toc-l2 { padding-left: 20px; }
#toc-list .toc-l3 { padding-left: 32px; opacity: 0.92; }
#toc-list .toc-l4, #toc-list .toc-l5, #toc-list .toc-l6 { padding-left: 44px; opacity: 0.82; font-size: 12px; }
#lint-list button {
    text-align: left; font: inherit; font-size: 13px; color: var(--text);
    background: transparent; border: none; border-radius: 8px; padding: 7px 10px; cursor: pointer;
    display: flex; align-items: center; gap: 8px;
}
#lint-list button:hover { background: var(--surface-2); }
.lint-line { font-family: var(--font-mono); font-size: 11px; color: var(--accent-3);
    border: 1px solid var(--border); border-radius: 5px; padding: 1px 5px; flex: none; }

/* --- Slash menu ----------------------------------------------------------- */
.slash-menu {
    position: fixed; min-width: 210px; max-height: 260px; overflow: auto; padding: 6px;
    background: var(--surface); border: 1px solid var(--border-strong); border-radius: var(--radius);
    box-shadow: 0 20px 50px rgba(0,0,0,0.5); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    z-index: 60; animation: pop var(--speed) var(--ease);
}
.slash-menu button {
    display: flex; align-items: center; justify-content: space-between; gap: 12px; width: 100%;
    font: inherit; font-size: 13px; color: var(--text); background: transparent; border: none;
    border-radius: 8px; padding: 8px 11px; cursor: pointer; text-align: left;
}
.slash-menu button.active, .slash-menu button:hover { background: var(--accent); color: #fff; }
.slash-menu kbd {
    font-family: var(--font-mono); font-size: 11px; opacity: 0.7;
    border: 1px solid var(--border); border-radius: 5px; padding: 1px 5px;
}

/* --- View menu checkboxes ------------------------------------------------- */
#view-menu .check { opacity: 0; margin-right: 4px; }
#view-menu button.active .check { opacity: 1; }

/* --- Status extras -------------------------------------------------------- */
.lint-count {
    font: inherit; font-size: 12px; color: var(--text-muted); background: transparent;
    border: 1px solid transparent; border-radius: 7px; padding: 2px 8px; cursor: pointer;
}
.lint-count:hover { border-color: var(--border); }
.lint-count.has-issues { color: var(--accent-3); font-weight: 600; }
.vim-badge {
    font-family: var(--font-mono); font-size: 11px; letter-spacing: 1px; font-weight: 700;
    padding: 2px 8px; border-radius: 6px; border: 1px solid var(--border);
}
.vim-badge.normal { color: var(--accent-2); }
.vim-badge.insert { color: var(--accent-3); border-color: var(--border-strong); }
.vim-badge.visual { color: var(--accent); background: var(--surface-2); }
body.vim-on #markdown-input { caret-color: var(--accent-3); }

/* --- Toast ---------------------------------------------------------------- */
.toast {
    position: fixed; bottom: 54px; left: 50%; transform: translateX(-50%) translateY(10px);
    background: var(--surface); color: var(--text); padding: 10px 18px; border-radius: 12px;
    border: 1px solid var(--border-strong); box-shadow: 0 12px 30px rgba(0,0,0,0.4);
    z-index: 100; font-size: 13px; backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
    pointer-events: none; opacity: 0; transition: opacity var(--speed) var(--ease), transform var(--speed) var(--ease);
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* --- Syntax highlight tokens ---------------------------------------------- */
.tok-keyword { color: var(--accent); font-weight: 600; }
.tok-string  { color: var(--accent-2); }
.tok-comment { color: var(--text-muted); font-style: italic; opacity: 0.8; }
.tok-number  { color: var(--accent-3); }
.tok-func    { color: var(--accent-2); }
.tok-op      { color: var(--text-muted); }
.tok-punct   { color: var(--text-muted); }

/* --- Mermaid-style diagrams ----------------------------------------------- */
.diagram-wrap {
    margin: 0 0 1em; padding: 16px; overflow: auto; text-align: center;
    background: var(--code-bg); border: 1px solid var(--border); border-radius: var(--radius-sm);
}
.diagram { max-width: 100%; height: auto; font-family: var(--font-ui); }
.diagram-shape { fill: var(--surface-2); stroke: var(--accent); stroke-width: 2; }
.diagram-label { fill: var(--text); font-size: 13px; }
.diagram-edge-label { fill: var(--text-muted); font-size: 11px; }
.diagram-edge-bg { fill: var(--code-bg); }
.diagram-error { color: var(--accent-3); font-size: 13px; }

@media (max-width: 860px) {
    .drawer { top: 10px; right: 10px; bottom: 10px; }
    .find-bar input { min-width: 110px; }
}