:root {
  color-scheme: dark;
  --app-bg: #0c0f15;
  --app-panel: rgba(18, 23, 33, .9);
  --app-panel-2: rgba(25, 31, 43, .92);
  --app-border: rgba(255,255,255,.1);
  --app-text: #f4f6fb;
  --app-muted: #9ba7bd;
  --primary: #f59f45;
  --primary-strong: #f97316;
  --danger: #ff6b6b;
  --success: #22c55e;
  --export-width: 600px;
  --card-padding: 42px;
  --card-radius: 16px;
  --base-font-size: 16px;
  --capture-font: "Noto Sans", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  --capture-bg: #f8fafc;
  --capture-surface: rgba(255,255,255,.92);
  --capture-text: #1f2937;
  --capture-muted: #64748b;
  --capture-heading: #315f95;
  --capture-accent: #5b7cfa;
  --capture-border: rgba(71, 85, 105, .18);
  --capture-code-bg: rgba(15, 23, 42, .05);
  --capture-quote-bg: rgba(91, 124, 250, .09);
  --capture-gradient: linear-gradient(135deg, #f7f1ff 0%, #e8f4ff 45%, #fff7ed 100%);
  --capture-shadow: 0 24px 80px rgba(15, 23, 42, .20);
  --bg-image: none;
  --bg-opacity: .35;
  --bg-blur: 0px;
  --watermark-text: "";
}

* { box-sizing: border-box; }
html, body { min-height: 100%; }
body {
  margin: 0;
  font-family: Inter, "Noto Sans", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  background:
    radial-gradient(circle at 12% 0%, rgba(249, 159, 69, .18), transparent 35%),
    radial-gradient(circle at 82% 12%, rgba(91, 124, 250, .16), transparent 42%),
    var(--app-bg);
  color: var(--app-text);
}

button, input, textarea, select { font: inherit; }
button { cursor: pointer; }
button:disabled { cursor: wait; opacity: .68; }

.app-shell { width: 100%; max-width: none; margin: 0 auto; padding: 22px; }
.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 16px;
  margin: -8px -4px 16px;
  border: 1px solid var(--app-border);
  border-radius: 18px;
  background: rgba(9, 12, 18, .82);
  backdrop-filter: blur(20px);
  box-shadow: 0 18px 50px rgba(0,0,0,.26);
}
.brand { display: flex; align-items: center; gap: 12px; min-width: 280px; }
.logo {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  font-size: 24px;
  font-weight: 900;
  color: #121212;
  background: linear-gradient(135deg, #fff 0%, #ffd08a 50%, #8fd7ff 100%);
  box-shadow: 0 8px 24px rgba(249, 159, 69, .28);
}
.brand h1 { margin: 0; font-size: 18px; letter-spacing: .2px; }
.brand p { margin: 3px 0 0; color: var(--app-muted); font-size: 12px; }
.toolbar { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 8px; }
.btn, .mini-btn, .preset-row button {
  border: 1px solid var(--app-border);
  color: var(--app-text);
  background: rgba(255,255,255,.055);
  border-radius: 10px;
  transition: transform .16s ease, background .16s ease, border-color .16s ease, box-shadow .16s ease;
}
.btn { min-height: 38px; padding: 8px 12px; display: inline-flex; align-items: center; gap: 8px; text-decoration: none; }
.btn:hover, .mini-btn:hover, .preset-row button:hover { transform: translateY(-1px); border-color: rgba(255,255,255,.24); background: rgba(255,255,255,.085); }
.btn.primary {
  color: #171717;
  border-color: transparent;
  background: linear-gradient(135deg, #ffcf87, var(--primary-strong));
  box-shadow: 0 10px 26px rgba(249, 115, 22, .28);
  font-weight: 800;
}
.btn.danger {
  color: #fff;
  border-color: #dc2626;
  background: #dc2626;
  box-shadow: 0 8px 20px rgba(220, 38, 38, .24);
}
.btn.danger:hover {
  border-color: #ef4444;
  background: #ef4444;
}
.btn.full { justify-content: center; width: 100%; }
.mini-btn { min-height: 30px; padding: 5px 9px; font-size: 12px; }

.hero-note {
  padding: 11px 14px;
  margin-bottom: 16px;
  border: 1px solid rgba(34, 197, 94, .22);
  border-radius: 14px;
  background: rgba(34, 197, 94, .075);
  color: #d9ffe7;
  font-size: 13px;
  line-height: 1.65;
}

.workspace {
  display: grid;
  grid-template-columns: minmax(360px, .92fr) minmax(420px, 1.18fr) minmax(300px, 360px);
  gap: 16px;
  align-items: start;
}
.card-panel {
  border: 1px solid var(--app-border);
  border-radius: 18px;
  background: var(--app-panel);
  box-shadow: 0 18px 50px rgba(0,0,0,.22);
  overflow: hidden;
}
.pane-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  min-height: 64px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--app-border);
  background: rgba(255,255,255,.035);
}
.pane-title h2 { margin: 0; font-size: 15px; }
.pane-title span { display: block; margin-top: 4px; color: var(--app-muted); font-size: 12px; line-height: 1.4; }
.sticky-title { position: relative; top: auto; z-index: 2; backdrop-filter: none; }

.editor-pane textarea {
  display: block;
  width: 100%;
  height: calc(100vh - 190px);
  min-height: 620px;
  padding: 18px;
  border: 0;
  resize: vertical;
  outline: none;
  color: #e5e7eb;
  background: #0c0f12;
  line-height: 1.68;
  font-family: "JetBrains Mono", "Fira Code", SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 14px;
  caret-color: var(--primary);
  tab-size: 2;
}
.editor-pane textarea:focus { box-shadow: inset 0 0 0 1px rgba(249,159,69,.55); }

.preview-scroller {
  width: 100%;
  height: calc(100vh - 190px);
  min-height: 620px;
  overflow: auto;
  padding: 28px;
  background:
    linear-gradient(45deg, rgba(255,255,255,.04) 25%, transparent 25%),
    linear-gradient(-45deg, rgba(255,255,255,.04) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, rgba(255,255,255,.04) 75%),
    linear-gradient(-45deg, transparent 75%, rgba(255,255,255,.04) 75%);
  background-size: 24px 24px;
  background-position: 0 0, 0 12px, 12px -12px, -12px 0;
}
.capture-card {
  position: relative;
  width: var(--export-width);
  margin: 0 auto;
  padding: var(--card-padding);
  overflow: hidden;
  border-radius: var(--card-radius);
  background: var(--capture-bg);
  color: var(--capture-text);
  font-family: var(--capture-font);
  font-size: var(--base-font-size);
  line-height: 1.72;
  box-shadow: var(--capture-shadow);
  isolation: isolate;
}
.capture-card.no-shadow { --capture-shadow: none; }
.capture-card.gradient-enabled { background: var(--capture-gradient); }
.capture-card.transparent-card { background: transparent !important; box-shadow: none; }
.background-overlay {
  position: absolute;
  inset: 0;
  z-index: -2;
  background-image: var(--bg-image);
  background-size: cover;
  background-position: center;
  opacity: var(--bg-opacity);
  filter: blur(var(--bg-blur));
  transform: scale(1.02);
}
.capture-card::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: var(--capture-surface);
  opacity: .72;
}
.capture-card.transparent-card::before { display: none; }
.custom-watermark-layer {
  position: absolute;
  inset: 0;
  z-index: 0;
  display: none;
  opacity: .105;
  pointer-events: none;
  transform: rotate(-22deg) scale(1.2);
  background-image: repeating-linear-gradient(0deg, transparent 0 80px, rgba(0,0,0,.02) 80px 81px);
}
.capture-card.custom-watermark .custom-watermark-layer { display: block; }
.capture-card.custom-watermark .custom-watermark-layer::before {
  content: var(--watermark-text);
  position: absolute;
  inset: -40px;
  color: var(--capture-text);
  font-size: 28px;
  font-weight: 900;
  letter-spacing: .12em;
  line-height: 120px;
  white-space: pre-wrap;
  word-spacing: 80px;
}
.markdown-body, .metadata-footer { position: relative; z-index: 1; }

.markdown-body > :first-child { margin-top: 0 !important; }
.markdown-body > :last-child { margin-bottom: 0 !important; }
.markdown-body h1, .markdown-body h2, .markdown-body h3,
.markdown-body h4, .markdown-body h5, .markdown-body h6 {
  color: var(--capture-heading);
  line-height: 1.25;
  letter-spacing: -.025em;
  margin: 1.35em 0 .7em;
}
.markdown-body h1 { font-size: 2.05em; border-bottom: 2px solid var(--capture-border); padding-bottom: .34em; }
.markdown-body h2 { font-size: 1.62em; border-bottom: 1px solid var(--capture-border); padding-bottom: .3em; }
.markdown-body h3 { font-size: 1.32em; }
.markdown-body h4 { font-size: 1.12em; }
.markdown-body p { margin: .78em 0; }
.markdown-body a { color: var(--capture-accent); text-decoration-thickness: .08em; text-underline-offset: .16em; }
.markdown-body strong { color: color-mix(in srgb, var(--capture-text) 72%, var(--capture-heading)); }
.markdown-body blockquote {
  margin: 1em 0;
  padding: .85em 1em;
  border-left: 4px solid var(--capture-accent);
  border-radius: 0 12px 12px 0;
  background: var(--capture-quote-bg);
  color: color-mix(in srgb, var(--capture-text) 84%, var(--capture-muted));
}
.markdown-body ul, .markdown-body ol { padding-left: 1.45em; margin: .85em 0; }
.markdown-body li { margin: .32em 0; }
.markdown-body hr { border: 0; border-top: 1px solid var(--capture-border); margin: 1.6em 0; }
.markdown-body table {
  width: 100%;
  margin: 1.1em 0;
  border-collapse: collapse;
  overflow: hidden;
  border-radius: 12px;
  font-size: .94em;
  background: color-mix(in srgb, var(--capture-bg) 78%, #fff 22%);
}
.markdown-body th, .markdown-body td { padding: .72em .8em; border: 1px solid var(--capture-border); vertical-align: top; }
.markdown-body th { color: var(--capture-heading); background: rgba(91, 124, 250, .09); text-align: left; }
.markdown-body img { max-width: 100%; border-radius: 12px; display: block; margin: 1em auto; }
.markdown-body pre {
  position: relative;
  margin: 1.05em 0;
  padding: 1em;
  overflow-x: auto;
  border-radius: 14px;
  border: 1px solid var(--capture-border);
  background: var(--capture-code-bg);
}
.markdown-body code {
  border-radius: 6px;
  padding: .16em .36em;
  background: var(--capture-code-bg);
  font-family: "JetBrains Mono", "Fira Code", "Source Code Pro", SFMono-Regular, Menlo, Consolas, monospace;
  font-size: .92em;
}
.markdown-body pre code { padding: 0; background: transparent; border-radius: 0; font-size: .9em; }
.markdown-body .contains-task-list { list-style: none; padding-left: .2em; }
.markdown-body .task-list-item input { margin-right: .5em; }
.markdown-body .katex-display { overflow-x: auto; overflow-y: hidden; padding: .35em 0; }
.capture-card.formula-left .katex-display { text-align: left; }
.mermaid-box {
  margin: 1.1em 0;
  padding: 16px;
  border: 1px solid var(--capture-border);
  border-radius: 14px;
  background: rgba(255,255,255,.62);
  overflow-x: auto;
}
.mermaid-box svg { display: block; max-width: 100%; height: auto; margin: 0 auto; }
.mermaid-error {
  white-space: pre-wrap;
  color: #b42318;
  background: #fff1f0;
  border: 1px solid #ffccc7;
  border-radius: 10px;
  padding: 12px;
}
.metadata-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  margin-top: 1.5em;
  padding-top: 1em;
  border-top: 1px solid var(--capture-border);
  color: var(--capture-muted);
  font-size: .88em;
}
.metadata-footer[hidden] { display: none; }

.settings-panel {
  position: sticky;
  top: 88px;
  max-height: calc(100vh - 108px);
  overflow: auto;
  background: var(--app-panel-2);
}
.settings-panel.collapsed { display: none; }
.settings-panel details { border-bottom: 1px solid var(--app-border); padding: 12px 14px; }
.settings-panel details:last-child { border-bottom: 0; }
.settings-panel summary { cursor: pointer; font-weight: 800; color: #eef3ff; user-select: none; }
.field { display: grid; gap: 7px; margin: 12px 0; color: #dfe6f5; font-size: 13px; }
.field input[type="text"], .field input[type="url"], .field input[type="date"], .field select, #urlInput {
  width: 100%;
  min-height: 38px;
  padding: 8px 10px;
  border-radius: 10px;
  border: 1px solid var(--app-border);
  color: var(--app-text);
  background: rgba(255,255,255,.07);
  outline: none;
}
.field input[type="range"] { width: 100%; accent-color: var(--primary); }
.file-field input { padding: 8px 0; color: var(--app-muted); }
.switch-field { display: flex; align-items: center; gap: 9px; margin: 12px 0; color: #e8edf8; font-size: 13px; }
.switch-field input { width: 18px; height: 18px; accent-color: var(--primary); }
.preset-row { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 10px; }
.preset-row button { min-height: 28px; padding: 4px 8px; color: #dfe6f5; font-size: 11px; }
.preset-row button:disabled { opacity: .42; cursor: not-allowed; transform: none; }
.field input:disabled { opacity: .55; cursor: not-allowed; }
.hint { color: var(--app-muted); font-size: 12px; line-height: 1.55; }
.hint.ok { color: #a7f3d0; }
.assist-output {
  margin-top: 10px;
  padding: 10px 12px;
  border: 1px solid rgba(91, 124, 250, .28);
  border-radius: 12px;
  background: rgba(91, 124, 250, .1);
  color: #eaf0ff;
  font-size: 12px;
  line-height: 1.55;
}
.inline-actions { margin: 8px 0; }
.code-style-preview pre { padding: 10px; border-radius: 10px; border: 1px solid var(--app-border); overflow: auto; background: rgba(0,0,0,.2); }

.status-toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  z-index: 50;
  transform: translate(-50%, 18px);
  max-width: min(580px, calc(100% - 28px));
  padding: 11px 14px;
  border: 1px solid var(--app-border);
  border-radius: 999px;
  color: #fff;
  background: rgba(15, 23, 42, .94);
  box-shadow: 0 16px 44px rgba(0,0,0,.34);
  opacity: 0;
  pointer-events: none;
  transition: opacity .18s ease, transform .18s ease;
  font-size: 13px;
}
.status-toast.show { opacity: 1; transform: translate(-50%, 0); }

#urlDialog { border: 0; border-radius: 18px; padding: 0; color: var(--app-text); background: transparent; }
#urlDialog::backdrop { background: rgba(0,0,0,.62); backdrop-filter: blur(5px); }
.dialog-card { width: min(520px, calc(100vw - 28px)); padding: 22px; border: 1px solid var(--app-border); border-radius: 18px; background: #121722; box-shadow: 0 24px 80px rgba(0,0,0,.45); }
.dialog-card h3 { margin: 0 0 8px; }
.dialog-card menu { display: flex; justify-content: flex-end; gap: 10px; padding: 0; margin: 18px 0 0; }

/* Theme variable sets */
:root[data-theme="light"] { --capture-bg:#f8fafc; --capture-surface:rgba(255,255,255,.84); --capture-text:#182230; --capture-muted:#667085; --capture-heading:#315f95; --capture-accent:#2563eb; --capture-border:rgba(15,23,42,.14); --capture-code-bg:rgba(15,23,42,.055); --capture-quote-bg:rgba(37,99,235,.08); --capture-gradient:linear-gradient(135deg,#f8fbff,#eef6ff 50%,#fff7ed); }
:root[data-theme="github"] { --capture-bg:#ffffff; --capture-surface:rgba(255,255,255,.92); --capture-text:#24292f; --capture-muted:#57606a; --capture-heading:#0969da; --capture-accent:#0969da; --capture-border:#d0d7de; --capture-code-bg:#f6f8fa; --capture-quote-bg:#f6f8fa; --capture-gradient:linear-gradient(135deg,#ffffff,#f6f8fa); }
:root[data-theme="sunset"] { --capture-bg:#fff3ed; --capture-surface:rgba(255,250,245,.80); --capture-text:#3f2a22; --capture-muted:#8a5b4c; --capture-heading:#b45309; --capture-accent:#e11d48; --capture-border:rgba(180,83,9,.18); --capture-code-bg:rgba(180,83,9,.08); --capture-quote-bg:rgba(251,146,60,.13); --capture-gradient:linear-gradient(135deg,#fff7ed 0%,#fed7aa 44%,#fecdd3 100%); }
:root[data-theme="pastel"] { --capture-bg:#f8f4ff; --capture-surface:rgba(255,255,255,.72); --capture-text:#334155; --capture-muted:#64748b; --capture-heading:#4f74a6; --capture-accent:#8b5cf6; --capture-border:rgba(99,102,241,.18); --capture-code-bg:rgba(99,102,241,.08); --capture-quote-bg:rgba(139,92,246,.1); --capture-gradient:linear-gradient(135deg,#f8f4ff,#e0f2fe 48%,#fff7ed); }
:root[data-theme="mint"] { --capture-bg:#f0fdfa; --capture-surface:rgba(255,255,255,.76); --capture-text:#193b35; --capture-muted:#49736b; --capture-heading:#0f766e; --capture-accent:#14b8a6; --capture-border:rgba(20,184,166,.20); --capture-code-bg:rgba(20,184,166,.08); --capture-quote-bg:rgba(45,212,191,.13); --capture-gradient:linear-gradient(135deg,#ecfeff,#d1fae5 52%,#fef9c3); }
:root[data-theme="lavender"] { --capture-bg:#faf5ff; --capture-surface:rgba(255,255,255,.72); --capture-text:#3d315b; --capture-muted:#7a6a9e; --capture-heading:#7c3aed; --capture-accent:#a855f7; --capture-border:rgba(168,85,247,.2); --capture-code-bg:rgba(168,85,247,.08); --capture-quote-bg:rgba(168,85,247,.11); --capture-gradient:linear-gradient(135deg,#faf5ff,#ede9fe,#e0e7ff); }
:root[data-theme="dark"] { --capture-bg:#111827; --capture-surface:rgba(17,24,39,.82); --capture-text:#e5e7eb; --capture-muted:#9ca3af; --capture-heading:#93c5fd; --capture-accent:#60a5fa; --capture-border:rgba(255,255,255,.13); --capture-code-bg:rgba(0,0,0,.28); --capture-quote-bg:rgba(96,165,250,.12); --capture-gradient:linear-gradient(135deg,#111827,#1e293b 55%,#312e81); }
:root[data-theme="nord"] { --capture-bg:#eceff4; --capture-surface:rgba(255,255,255,.72); --capture-text:#2e3440; --capture-muted:#5e6878; --capture-heading:#3f6f9f; --capture-accent:#5e81ac; --capture-border:rgba(46,52,64,.18); --capture-code-bg:rgba(216,222,233,.72); --capture-quote-bg:rgba(136,192,208,.16); --capture-gradient:linear-gradient(135deg,#eceff4,#e5e9f0 54%,#d8dee9); }
:root[data-theme="monokai"] { --capture-bg:#272822; --capture-surface:rgba(39,40,34,.82); --capture-text:#f8f8f2; --capture-muted:#c8c8bd; --capture-heading:#a6e22e; --capture-accent:#66d9ef; --capture-border:rgba(255,255,255,.14); --capture-code-bg:rgba(0,0,0,.32); --capture-quote-bg:rgba(166,226,46,.11); --capture-gradient:linear-gradient(135deg,#272822,#3b2f4a,#1f4c4f); }
:root[data-theme="solarized"] { --capture-bg:#fdf6e3; --capture-surface:rgba(253,246,227,.86); --capture-text:#586e75; --capture-muted:#839496; --capture-heading:#268bd2; --capture-accent:#2aa198; --capture-border:rgba(101,123,131,.22); --capture-code-bg:rgba(238,232,213,.86); --capture-quote-bg:rgba(38,139,210,.10); --capture-gradient:linear-gradient(135deg,#fdf6e3,#eee8d5,#e0f2fe); }
:root[data-theme="dracula"] { --capture-bg:#282a36; --capture-surface:rgba(40,42,54,.82); --capture-text:#f8f8f2; --capture-muted:#bdc3d6; --capture-heading:#bd93f9; --capture-accent:#ff79c6; --capture-border:rgba(255,255,255,.16); --capture-code-bg:rgba(0,0,0,.25); --capture-quote-bg:rgba(189,147,249,.13); --capture-gradient:linear-gradient(135deg,#282a36,#3b305f,#5b2a55); }
:root[data-theme="github-dark"] { --capture-bg:#0d1117; --capture-surface:rgba(13,17,23,.86); --capture-text:#c9d1d9; --capture-muted:#8b949e; --capture-heading:#58a6ff; --capture-accent:#79c0ff; --capture-border:#30363d; --capture-code-bg:#161b22; --capture-quote-bg:rgba(56,139,253,.12); --capture-gradient:linear-gradient(135deg,#0d1117,#161b22,#1f2937); }
:root[data-theme="one-dark"] { --capture-bg:#282c34; --capture-surface:rgba(40,44,52,.84); --capture-text:#abb2bf; --capture-muted:#828997; --capture-heading:#61afef; --capture-accent:#c678dd; --capture-border:rgba(171,178,191,.18); --capture-code-bg:rgba(0,0,0,.28); --capture-quote-bg:rgba(97,175,239,.12); --capture-gradient:linear-gradient(135deg,#282c34,#313947,#372f44); }
:root[data-theme="ocean"] { --capture-bg:#eef9ff; --capture-surface:rgba(255,255,255,.74); --capture-text:#12344d; --capture-muted:#42657d; --capture-heading:#0369a1; --capture-accent:#0891b2; --capture-border:rgba(8,145,178,.20); --capture-code-bg:rgba(8,145,178,.08); --capture-quote-bg:rgba(14,165,233,.12); --capture-gradient:linear-gradient(135deg,#ecfeff,#bae6fd,#dbeafe); }
:root[data-theme="forest"] { --capture-bg:#f2fbf2; --capture-surface:rgba(255,255,255,.76); --capture-text:#203929; --capture-muted:#526b59; --capture-heading:#15803d; --capture-accent:#22c55e; --capture-border:rgba(34,197,94,.20); --capture-code-bg:rgba(34,197,94,.08); --capture-quote-bg:rgba(74,222,128,.13); --capture-gradient:linear-gradient(135deg,#f0fdf4,#dcfce7,#fef9c3); }
:root[data-theme="purple-dream"] { --capture-bg:#2c1b4a; --capture-surface:rgba(44,27,74,.82); --capture-text:#f5eaff; --capture-muted:#d3bff0; --capture-heading:#d8b4fe; --capture-accent:#f0abfc; --capture-border:rgba(245,234,255,.16); --capture-code-bg:rgba(0,0,0,.24); --capture-quote-bg:rgba(216,180,254,.12); --capture-gradient:linear-gradient(135deg,#2c1b4a,#5b21b6,#be185d); }
:root[data-theme="midnight"] { --capture-bg:#020617; --capture-surface:rgba(2,6,23,.86); --capture-text:#dbeafe; --capture-muted:#93a4bd; --capture-heading:#38bdf8; --capture-accent:#818cf8; --capture-border:rgba(148,163,184,.18); --capture-code-bg:rgba(15,23,42,.82); --capture-quote-bg:rgba(56,189,248,.12); --capture-gradient:linear-gradient(135deg,#020617,#172554,#312e81); }
:root[data-theme="transparent"] { --capture-bg:transparent; --capture-surface:transparent; --capture-text:#182230; --capture-muted:#667085; --capture-heading:#315f95; --capture-accent:#2563eb; --capture-border:rgba(15,23,42,.16); --capture-code-bg:rgba(15,23,42,.06); --capture-quote-bg:rgba(37,99,235,.08); --capture-gradient:transparent; }
:root[data-theme="transparent-dark"] { --capture-bg:transparent; --capture-surface:transparent; --capture-text:#eef2ff; --capture-muted:#c7d2fe; --capture-heading:#93c5fd; --capture-accent:#a5b4fc; --capture-border:rgba(255,255,255,.18); --capture-code-bg:rgba(0,0,0,.32); --capture-quote-bg:rgba(147,197,253,.12); --capture-gradient:transparent; }

:root[data-gradient="pastel"] { --capture-gradient:linear-gradient(135deg,#f8f4ff,#e0f2fe 48%,#fff7ed); }
:root[data-gradient="sunset"] { --capture-gradient:linear-gradient(135deg,#fff7ed 0%,#fed7aa 44%,#fecdd3 100%); }
:root[data-gradient="mint"] { --capture-gradient:linear-gradient(135deg,#ecfeff,#d1fae5 52%,#fef9c3); }
:root[data-gradient="ocean"] { --capture-gradient:linear-gradient(135deg,#ecfeff,#bae6fd,#dbeafe); }
:root[data-gradient="forest"] { --capture-gradient:linear-gradient(135deg,#f0fdf4,#dcfce7,#fef9c3); }
:root[data-gradient="purple"] { --capture-gradient:linear-gradient(135deg,#2c1b4a,#5b21b6,#be185d); }
:root[data-gradient="midnight"] { --capture-gradient:linear-gradient(135deg,#020617,#172554,#312e81); }

.capture-card[data-code-tone="dark"] .markdown-body pre { background: #111827; color: #e5e7eb; }
.capture-card[data-code-tone="nord"] .markdown-body pre { background: #2e3440; color: #d8dee9; }
.capture-card[data-code-tone="colorful"] .markdown-body pre { background: linear-gradient(135deg,#17162a,#1f2937); color: #f8fafc; }
.capture-card[data-code-tone="light"] .markdown-body pre { background: #f6f8fa; color: #24292f; }
.capture-card.line-numbers .markdown-body pre code { counter-reset: line; }
.capture-card.line-numbers .markdown-body pre code .line {
  display: block;
  padding-left: 3.2em;
  position: relative;
  min-height: 0;
  line-height: inherit;
}
.capture-card.line-numbers .markdown-body pre code .line::before {
  counter-increment: line;
  content: counter(line);
  position: absolute;
  left: 0;
  width: 2.2em;
  color: var(--capture-muted);
  opacity: .65;
  text-align: right;
}

@media (max-width: 1280px) {
  .workspace { grid-template-columns: 1fr 1fr; }
  .settings-panel { grid-column: 1 / -1; position: static; max-height: none; }
}

.workspace.settings-collapsed {
  grid-template-columns: minmax(360px, .92fr) minmax(520px, 1.28fr);
}
@media (max-width: 900px) {
  .app-shell { padding: 12px; }
  .topbar { position: static; align-items: flex-start; flex-direction: column; }
  .toolbar { justify-content: flex-start; }
  .workspace { grid-template-columns: 1fr; }
  .editor-pane textarea, .preview-scroller { min-height: 480px; height: auto; }
  .sticky-title { position: static; }
  .preview-scroller { padding: 16px; }
  .capture-card { margin-left: 0; margin-right: 0; }
}