/* ── Fonts (shared across all themes) ─────────────────────────────────── */
:root {
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", system-ui, sans-serif;
}

/* ════════════════════════════════════════════════════════════════════════
   THEMES — applied via data-theme on <body>
   Default = purple-night (matches original design)
   ════════════════════════════════════════════════════════════════════════ */

/* 01 Vantablack Purple — Night */
:root, body[data-theme="purple-night"] {
  --bg: #0a0a0f; --bg-2: #101019; --panel: #14141f; --panel-2: #191926;
  --border: #262636; --border-2: #33334a;
  --txt: #e8e8f0; --txt-dim: #9a9ab0; --txt-faint: #61617a;
  --accent: #7c5cff; --accent-2: #b14cff; --accent-soft: rgba(124,92,255,0.14);
  --ok: #3ddc84; --warn: #ffb24c; --err: #ff5c72; --err-soft: rgba(255,92,114,0.12);
  --code-bg: #0d0d15; --logo-txt: #fff;
  --grad-1: rgba(124,92,255,0.12); --grad-2: rgba(177,76,255,0.08);
}
/* 01 Vantablack Purple — Day */
body[data-theme="purple-day"] {
  --bg: #f7f6ff; --bg-2: #eeecff; --panel: #ffffff; --panel-2: #f0edff;
  --border: #d8d2f8; --border-2: #c2b8f0;
  --txt: #0f0a2a; --txt-dim: #5a5080; --txt-faint: #9a90c0;
  --accent: #5c3eee; --accent-2: #8c30dd; --accent-soft: rgba(92,62,238,0.10);
  --ok: #1a9944; --warn: #b86000; --err: #cc1133; --err-soft: rgba(204,17,51,0.10);
  --code-bg: #eeecff; --logo-txt: #fff;
  --grad-1: rgba(92,62,238,0.07); --grad-2: rgba(140,48,221,0.05);
}

/* 02 Midnight Blue — Night */
body[data-theme="blue-night"] {
  --bg: #080c14; --bg-2: #0c1220; --panel: #0d1420; --panel-2: #121b2e;
  --border: #1c2a42; --border-2: #263550;
  --txt: #e2eaff; --txt-dim: #8a9dc0; --txt-faint: #4a5880;
  --accent: #1a6eff; --accent-2: #4da0ff; --accent-soft: rgba(26,110,255,0.14);
  --ok: #00d4aa; --warn: #ffaa33; --err: #ff4466; --err-soft: rgba(255,68,102,0.12);
  --code-bg: #060a12; --logo-txt: #fff;
  --grad-1: rgba(26,110,255,0.12); --grad-2: rgba(77,160,255,0.07);
}
/* 02 Midnight Blue — Day */
body[data-theme="blue-day"] {
  --bg: #f2f6ff; --bg-2: #e8eeff; --panel: #ffffff; --panel-2: #edf2ff;
  --border: #ccd8f4; --border-2: #b0c4ee;
  --txt: #080e22; --txt-dim: #3a5080; --txt-faint: #7a90b8;
  --accent: #0050dd; --accent-2: #0077ff; --accent-soft: rgba(0,80,221,0.10);
  --ok: #008866; --warn: #b86000; --err: #cc1144; --err-soft: rgba(204,17,68,0.10);
  --code-bg: #e8eeff; --logo-txt: #fff;
  --grad-1: rgba(0,80,221,0.07); --grad-2: rgba(0,119,255,0.05);
}

/* 03 Carbon Amber — Night */
body[data-theme="amber-night"] {
  --bg: #0a0906; --bg-2: #111009; --panel: #141210; --panel-2: #1c1916;
  --border: #2a2520; --border-2: #3d3528;
  --txt: #f0e8d8; --txt-dim: #a89060; --txt-faint: #6b5e40;
  --accent: #ff9900; --accent-2: #ffcc44; --accent-soft: rgba(255,153,0,0.14);
  --ok: #44dd88; --warn: #ffcc44; --err: #ff5533; --err-soft: rgba(255,85,51,0.12);
  --code-bg: #060504; --logo-txt: #1a0a00;
  --grad-1: rgba(255,153,0,0.10); --grad-2: rgba(255,204,68,0.06);
}
/* 03 Carbon Amber — Day */
body[data-theme="amber-day"] {
  --bg: #faf8f2; --bg-2: #f5f0e6; --panel: #ffffff; --panel-2: #f5f0e4;
  --border: #e5dcc8; --border-2: #d4c8aa;
  --txt: #1c1407; --txt-dim: #7a6844; --txt-faint: #a89060;
  --accent: #b86800; --accent-2: #dd9900; --accent-soft: rgba(184,104,0,0.10);
  --ok: #1a8a44; --warn: #b06600; --err: #cc2200; --err-soft: rgba(204,34,0,0.10);
  --code-bg: #f0e8d4; --logo-txt: #fff;
  --grad-1: rgba(184,104,0,0.07); --grad-2: rgba(221,153,0,0.05);
}

/* 04 Forest Emerald — Night */
body[data-theme="forest-night"] {
  --bg: #060d09; --bg-2: #0a1410; --panel: #0c1610; --panel-2: #101e14;
  --border: #182d1f; --border-2: #22402c;
  --txt: #daf0e2; --txt-dim: #6aa880; --txt-faint: #3a6648;
  --accent: #00cc66; --accent-2: #44ddcc; --accent-soft: rgba(0,204,102,0.14);
  --ok: #44ddcc; --warn: #ffcc00; --err: #ff4455; --err-soft: rgba(255,68,85,0.12);
  --code-bg: #030806; --logo-txt: #001a08;
  --grad-1: rgba(0,204,102,0.10); --grad-2: rgba(68,221,204,0.07);
}
/* 04 Forest Emerald — Day */
body[data-theme="forest-day"] {
  --bg: #f2faf5; --bg-2: #e4f5ea; --panel: #ffffff; --panel-2: #e8f5ec;
  --border: #c0e4cc; --border-2: #9ad4ae;
  --txt: #061a0a; --txt-dim: #2a6640; --txt-faint: #6aa880;
  --accent: #008844; --accent-2: #00aa66; --accent-soft: rgba(0,136,68,0.10);
  --ok: #007a66; --warn: #886600; --err: #bb2233; --err-soft: rgba(187,34,51,0.10);
  --code-bg: #e4f5ea; --logo-txt: #fff;
  --grad-1: rgba(0,136,68,0.07); --grad-2: rgba(0,170,102,0.05);
}

/* 05 Rose Slate — Night */
body[data-theme="rose-night"] {
  --bg: #0e0a0c; --bg-2: #160e12; --panel: #1a1216; --panel-2: #221820;
  --border: #33222c; --border-2: #4a303c;
  --txt: #f2e8ec; --txt-dim: #aa7a8a; --txt-faint: #6a4a54;
  --accent: #ff3a6e; --accent-2: #ff7aaa; --accent-soft: rgba(255,58,110,0.14);
  --ok: #33ddaa; --warn: #ffaa55; --err: #ff5566; --err-soft: rgba(255,85,102,0.12);
  --code-bg: #08060a; --logo-txt: #fff;
  --grad-1: rgba(255,58,110,0.11); --grad-2: rgba(255,122,170,0.07);
}
/* 05 Rose Slate — Day */
body[data-theme="rose-day"] {
  --bg: #fff5f8; --bg-2: #fce8ef; --panel: #ffffff; --panel-2: #fce8ef;
  --border: #f0ccd8; --border-2: #e0a8bc;
  --txt: #220a12; --txt-dim: #8a3a54; --txt-faint: #aa7a8a;
  --accent: #cc1150; --accent-2: #ee3380; --accent-soft: rgba(204,17,80,0.10);
  --ok: #1a8866; --warn: #cc6600; --err: #bb1133; --err-soft: rgba(187,17,51,0.10);
  --code-bg: #fce8ef; --logo-txt: #fff;
  --grad-1: rgba(204,17,80,0.07); --grad-2: rgba(238,51,128,0.05);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }

body {
  font-family: var(--sans);
  color: var(--txt);
  background:
    radial-gradient(1100px 600px at 78% -10%, var(--grad-1), transparent 60%),
    radial-gradient(900px 500px at 0% 110%, var(--grad-2), transparent 55%),
    var(--bg);
  display: flex; flex-direction: column; height: 100vh;
  overflow: hidden; -webkit-font-smoothing: antialiased;
  transition: background 0.25s ease, color 0.25s ease;
}

/* ── Layout ─────────────────────────────────────────────────────────────── */
.body-wrap { display: flex; flex: 1; min-height: 0; overflow: hidden; }
.cw { flex: 1; display: flex; flex-direction: column; overflow: hidden; min-width: 0; }

/* ── Sidebar ─────────────────────────────────────────────────────────────── */
#sidebar {
  width: 220px; flex-shrink: 0;
  background: var(--bg-2); border-right: 1px solid var(--border);
  display: flex; flex-direction: column; overflow: hidden;
  transition: width 0.2s ease, opacity 0.2s ease;
}
body.sb-collapsed #sidebar { width: 0; opacity: 0; pointer-events: none; }

.sb-toggle {
  background: none; border: none; color: var(--txt-dim); cursor: pointer;
  padding: 6px; border-radius: 7px; display: flex; align-items: center;
  transition: color 0.12s, background 0.12s; flex-shrink: 0;
}
.sb-toggle:hover { color: var(--txt); background: var(--accent-soft); }

.sb-new {
  display: flex; align-items: center; gap: 8px; margin: 10px 8px 8px;
  padding: 9px 12px; border-radius: 9px; cursor: pointer;
  background: var(--accent-soft); border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent);
  color: var(--accent); font-size: 13px; font-weight: 600; font-family: var(--sans);
  transition: all 0.13s;
}
.sb-new:hover { background: color-mix(in srgb, var(--accent) 22%, transparent); border-color: color-mix(in srgb, var(--accent) 50%, transparent); }
.sb-new svg { flex-shrink: 0; }
.sb-kbd {
  margin-left: auto; font-size: 10px; font-family: var(--mono);
  color: color-mix(in srgb, var(--accent) 60%, transparent); font-weight: 400;
}

.sb-list { flex: 1; overflow-y: auto; padding: 0 8px 12px; }
.sb-list::-webkit-scrollbar { width: 4px; }
.sb-list::-webkit-scrollbar-thumb { background: var(--border-2); border-radius: 4px; }

.sb-group-label {
  font-size: 9.5px; font-weight: 600; letter-spacing: 0.09em; text-transform: uppercase;
  color: var(--txt-faint); padding: 12px 6px 4px;
}
.sb-item {
  padding: 8px 10px; border-radius: 8px; cursor: pointer;
  transition: background 0.12s; margin-bottom: 1px;
}
.sb-item:hover { background: var(--panel); }
.sb-item.active {
  background: var(--accent-soft); border: 1px solid var(--accent-soft);
}
.sb-item-title {
  font-size: 12.5px; color: var(--txt); font-weight: 500;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis; line-height: 1.4;
}
.sb-item.active .sb-item-title { color: var(--accent); }
.sb-item-meta { font-size: 10.5px; color: var(--txt-faint); font-family: var(--mono); margin-top: 2px; }
.sb-empty { font-size: 12px; color: var(--txt-faint); padding: 16px 8px; line-height: 1.6; }

/* ── Header ─────────────────────────────────────────────────────────────── */
header {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 18px; border-bottom: 1px solid color-mix(in srgb, var(--border) 70%, transparent);
  background: color-mix(in srgb, var(--bg-2) 75%, transparent); backdrop-filter: blur(20px); z-index: 5;
  flex-shrink: 0;
}
.brand { display: flex; align-items: center; gap: 11px; }
.logo {
  width: 32px; height: 32px; border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 4px 20px color-mix(in srgb, var(--accent) 40%, transparent),
              0 0 0 1px color-mix(in srgb, var(--accent) 30%, transparent);
  position: relative;
}
.logo::after {
  content: ""; position: absolute; inset: 8px;
  border-radius: 3px; background: rgba(0,0,0,0.5);
}
.wordmark { font-weight: 650; font-size: 17px; letter-spacing: -0.02em; }
.wordmark span { color: var(--txt-faint); font-weight: 400; }
.spacer { flex: 1; }
.pills { display: flex; gap: 7px; align-items: center; flex-wrap: wrap; }
.pill {
  font-size: 11.5px; font-weight: 500; padding: 4px 10px;
  border-radius: 999px; border: 1px solid var(--border-2);
  color: var(--txt-dim); display: flex; align-items: center; gap: 6px;
  background: var(--panel);
}
.pill .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--txt-faint); }
.pill.on { color: var(--txt); border-color: rgba(61, 220, 132, 0.4); }
.pill.on .dot { background: var(--ok); box-shadow: 0 0 8px var(--ok); }

/* ── Theme picker ───────────────────────────────────────────────────────── */
.theme-btn { position: relative; }

.theme-popover {
  display: none; position: absolute; top: calc(100% + 8px); right: 0;
  background: var(--panel); border: 1px solid var(--border-2);
  border-radius: 14px; padding: 14px; width: 264px; z-index: 200;
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
}
.theme-popover.open { display: block; }

.tp-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 12px;
}
.tp-title { font-size: 12px; font-weight: 600; color: var(--txt-dim); letter-spacing: 0.06em; text-transform: uppercase; }

.tp-mode-toggle {
  display: flex; align-items: center; gap: 6px;
  background: var(--panel-2); border: 1px solid var(--border-2);
  border-radius: 20px; padding: 4px 10px; cursor: pointer; color: var(--txt-dim);
  font-size: 11px; font-family: var(--sans); transition: all 0.15s;
}
.tp-mode-toggle:hover { color: var(--txt); border-color: var(--accent); }
.tp-mode-ico { font-size: 12px; }

.tp-palettes { display: flex; flex-direction: column; gap: 6px; }

.tp-pal {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 11px; border-radius: 9px; cursor: pointer;
  background: transparent; border: 1px solid transparent;
  color: var(--txt); font-family: var(--sans); width: 100%;
  transition: all 0.13s;
}
.tp-pal:hover { background: var(--panel-2); border-color: var(--border); }
.tp-pal.active { background: var(--accent-soft); border-color: var(--accent); }

.tp-swatch {
  width: 14px; height: 14px; border-radius: 50%; flex-shrink: 0;
  border: 1px solid rgba(255,255,255,0.12);
}
.tp-pal .tp-swatch:nth-child(2) { margin-left: -6px; }
.tp-pal .tp-swatch:nth-child(3) { margin-left: -6px; }
.tp-name { font-size: 13px; font-weight: 500; margin-left: 4px; }

/* header needs position:relative for the popover */
header { position: relative; }

/* ── Conversation thread ────────────────────────────────────────────────── */
main {
  flex: 1; overflow-y: auto; padding: 30px 0 24px; scroll-behavior: smooth;
}
.thread { max-width: 820px; margin: 0 auto; padding: 0 22px;
  display: flex; flex-direction: column; gap: 28px; }

.welcome { text-align: center; margin-top: 8vh; color: var(--txt-dim); }
.welcome h1 {
  font-size: 30px; font-weight: 600; letter-spacing: -0.03em;
  color: var(--txt); margin-bottom: 10px;
}
.welcome h1 b {
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.welcome p { font-size: 14.5px; line-height: 1.6; max-width: 460px; margin: 0 auto; }
.examples { display: flex; flex-wrap: wrap; gap: 8px; justify-content: flex-start; margin-top: 8px; }
.example {
  font-size: 12px; padding: 8px 14px; border-radius: 10px; cursor: pointer;
  border: 1px solid var(--border-2); background: var(--panel); color: var(--txt-dim);
  transition: all 0.2s; font-family: var(--mono);
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}
.example::before { content: "/ "; color: var(--accent); font-weight: 700; }
.example:hover {
  border-color: var(--accent); color: var(--txt); background: var(--accent-soft);
  transform: translateY(-1px); box-shadow: 0 6px 18px color-mix(in srgb, var(--accent) 14%, transparent);
}

/* ── Messages ───────────────────────────────────────────────────────────── */
.msg {
  display: flex; flex-direction: column; gap: 5px;
  animation: rise 0.22s ease;
  position: relative;
}
@keyframes rise { from { opacity: 0; transform: translateY(5px); } to { opacity: 1; transform: none; } }
.msg .who {
  font-size: 11px; font-weight: 600; letter-spacing: 0.06em;
  color: var(--txt-faint); text-transform: uppercase;
}
.msg.user { align-items: flex-end; }
.msg.user .bubble {
  background: var(--accent-soft); border: 1px solid rgba(124, 92, 255, 0.3);
  border-radius: 14px 14px 4px 14px; padding: 11px 15px; max-width: 80%;
  font-family: var(--mono); font-size: 13.5px; white-space: pre-wrap;
}
.msg.assistant .bubble { width: 100%; }

.route-tag {
  display: inline-flex; align-items: center; gap: 6px; font-size: 11px;
  color: var(--txt-faint); font-family: var(--mono); margin-bottom: 2px;
}
.route-tag b { color: var(--accent); font-weight: 600; }
.mem-tag {
  display: inline-flex; align-items: center; font-size: 11px;
  color: var(--txt-faint); font-family: var(--mono); margin-bottom: 4px;
  cursor: help; width: fit-content;
}
.usage-tag { font-size: 11px; color: var(--txt-faint); font-family: var(--mono); margin-top: 4px; }

/* ── Tool call blocks ───────────────────────────────────────────────────── */
.tool-calls-container { display: flex; flex-direction: column; gap: 4px; margin-bottom: 6px; }
.tool-call-row {
  display: flex; align-items: center; gap: 8px; font-size: 11.5px;
  font-family: var(--mono); padding: 5px 10px; border-radius: 8px;
  background: var(--panel); border: 1px solid var(--border);
  color: var(--txt-dim); max-width: 600px;
}
.tool-call-row.loading { border-color: var(--accent-2); animation: tool-pulse 1.4s ease-in-out infinite; }
.tool-call-row.done    { border-color: var(--ok, #4ade80); }
.tc-icon { flex-shrink: 0; }
.tc-name { color: var(--accent); font-weight: 600; }
.tc-args { color: var(--txt-faint); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 300px; }
.tc-result { color: var(--txt-faint); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 300px; }
@keyframes tool-pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.5; }
}

/* ── Slash autocomplete dropdown ────────────────────────────────────────── */
.slash-ac {
  display: none; position: absolute; bottom: calc(100% + 6px); left: 0; right: 0;
  background: var(--surface); border: 1px solid var(--border-2); border-radius: 12px;
  overflow: hidden; box-shadow: 0 -8px 32px rgba(0,0,0,0.4); z-index: 200;
  max-height: 320px; overflow-y: auto;
}
.ac-item {
  display: flex; align-items: center; gap: 10px; padding: 9px 14px;
  cursor: pointer; transition: background 0.1s;
}
.ac-item:hover, .ac-item.selected { background: var(--panel); }
.ac-cmd {
  font-family: var(--mono); font-size: 12.5px; font-weight: 700;
  color: var(--accent); white-space: nowrap; min-width: 90px;
}
.ac-desc { font-size: 12px; color: var(--txt-dim); line-height: 1.3; }
.composer { position: relative; }

/* ── Message action bar ─────────────────────────────────────────────────── */
.msg-actions {
  display: flex; gap: 5px; margin-top: 2px;
  opacity: 0; transition: opacity 0.15s;
  pointer-events: none;
}
.msg:hover .msg-actions { opacity: 1; pointer-events: auto; }
.msg.user .msg-actions { justify-content: flex-end; }

.act {
  background: var(--panel); border: 1px solid var(--border);
  color: var(--txt-faint); border-radius: 7px; padding: 3px 9px;
  font-size: 11.5px; cursor: pointer; font-family: var(--mono);
  transition: all 0.12s; white-space: nowrap; line-height: 1.6;
}
.act:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); }
.act.ok { color: var(--ok); border-color: var(--ok); }

/* ── Fork divider ───────────────────────────────────────────────────────── */
.fork-divider {
  display: flex; align-items: center; gap: 10px; color: var(--accent);
  font-size: 11.5px; font-family: var(--mono); font-weight: 600;
  padding: 8px 0;
}
.fork-divider::before, .fork-divider::after {
  content: ""; flex: 1; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(124,92,255,0.4), transparent);
}

/* ── Rich text (bubble content) ─────────────────────────────────────────── */
.bubble {
  font-size: 14.5px; line-height: 1.7; color: var(--txt);
}

/* Headings — clear visual hierarchy */
.bubble h1 {
  font-size: 22px; font-weight: 700; letter-spacing: -0.02em;
  color: var(--txt); margin: 28px 0 12px;
  padding-bottom: 8px; border-bottom: 1px solid var(--border);
}
.bubble h2 {
  font-size: 18px; font-weight: 680; letter-spacing: -0.015em;
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
  margin: 28px 0 10px;
}
.bubble h3 {
  font-size: 15.5px; font-weight: 650; color: var(--txt);
  margin: 22px 0 8px; letter-spacing: -0.01em;
}
.bubble h4 {
  font-size: 13px; font-weight: 650; color: var(--txt-dim);
  text-transform: uppercase; letter-spacing: 0.06em; margin: 18px 0 6px;
}

/* First heading in a response needs no extra top margin */
.bubble > h1:first-child,
.bubble > h2:first-child,
.bubble > h3:first-child { margin-top: 4px; }

/* Paragraphs */
.bubble p { margin: 0 0 12px; }
.bubble p:last-child { margin-bottom: 0; }

/* Lists */
.bubble ul, .bubble ol {
  margin: 4px 0 14px; padding-left: 26px;
}
.bubble li { margin: 6px 0; line-height: 1.65; }
.bubble li > ul, .bubble li > ol { margin: 4px 0 4px; }

/* Inline elements */
.bubble strong { color: var(--txt); font-weight: 650; }
.bubble em { color: var(--txt-dim); font-style: italic; }
.bubble s { color: var(--txt-faint); }
.bubble a { color: var(--accent); text-decoration: underline; text-underline-offset: 2px; }
.bubble a:hover { color: var(--accent-2); }

/* Inline code */
.bubble code:not(pre code) {
  font-family: var(--mono); font-size: 0.87em;
  background: var(--code-bg); border: 1px solid var(--border);
  padding: 1px 6px; border-radius: 5px; color: #e0c4ff;
}

/* Code blocks */
.bubble pre {
  background: var(--code-bg); border: 1px solid var(--border); border-radius: 11px;
  padding: 14px 16px; overflow-x: auto; margin: 0 0 14px; position: relative;
}
.bubble pre code {
  font-family: var(--mono); font-size: 12.8px; line-height: 1.6; color: #d7d7ea;
}
.bubble pre .lang {
  position: absolute; top: 9px; right: 12px; font-size: 10.5px;
  color: var(--txt-faint); text-transform: uppercase; letter-spacing: 0.05em;
}

/* Horizontal rule */
.bubble hr {
  border: 0; margin: 22px 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-2), transparent);
}

/* Blockquote */
.bubble blockquote {
  border-left: 3px solid var(--accent); margin: 12px 0;
  padding: 8px 14px; background: var(--accent-soft);
  border-radius: 0 8px 8px 0; color: var(--txt-dim);
  font-style: italic;
}
.bubble blockquote p { margin-bottom: 0; }

/* Streaming cursor */
.cursor::after { content: "▋"; color: var(--accent); animation: blink 1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

/* ── Spend panel ────────────────────────────────────────────────────────── */
#spendOverlay {
  position: fixed; inset: 0; z-index: 50; display: flex;
  align-items: center; justify-content: center;
  background: rgba(0,0,0,0.55); backdrop-filter: blur(3px);
}
.spend-card {
  width: min(560px, 92vw); max-height: 82vh; overflow-y: auto;
  background: var(--bg); border: 1px solid var(--border);
  border-radius: 14px; padding: 18px 20px;
  box-shadow: 0 24px 70px rgba(0,0,0,0.5);
}
.spend-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 10px; }
.spend-head .dim { color: var(--txt-faint); font-size: 11.5px; }
.spend-close {
  background: var(--panel); border: 1px solid var(--border); color: var(--txt);
  border-radius: 7px; width: 28px; height: 28px; cursor: pointer; flex: none;
}
.spend-close:hover { border-color: var(--accent); color: var(--accent); }
.spend-sec { margin-top: 16px; }
.spend-sec-h { font-size: 11px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--txt-faint); margin-bottom: 8px; }
.spend-row { margin-bottom: 9px; }
.spend-row-top { display: flex; justify-content: space-between; font-size: 13px; margin-bottom: 3px; }
.spend-bar { height: 5px; background: var(--panel); border-radius: 3px; overflow: hidden; }
.spend-bar > i { display: block; height: 100%; background: var(--accent); }
.spend-line {
  display: flex; justify-content: space-between; gap: 12px;
  font-size: 12.5px; padding: 4px 0; border-bottom: 1px solid var(--border);
}
.spend-line:last-child { border-bottom: none; }
.feat-chip {
  font-size: 10.5px; color: var(--accent); border: 1px solid var(--accent);
  border-radius: 4px; padding: 1px 5px; text-transform: capitalize;
}
.mono { font-family: var(--mono); }

/* ── Agent panel ────────────────────────────────────────────────────────── */
.agent-panel {
  border: 1px solid var(--border-2); border-radius: 16px; overflow: hidden;
  background: linear-gradient(180deg, var(--panel-2), var(--panel));
  box-shadow: 0 8px 40px rgba(0,0,0,0.35);
}
.ap-head { padding: 14px 17px; border-bottom: 1px solid var(--border); }
.ap-title { display: flex; align-items: center; gap: 9px; font-weight: 600; font-size: 14px; }
.ap-title .badge {
  font-size: 10.5px; font-weight: 600; padding: 3px 8px; border-radius: 6px;
  background: var(--accent-soft); color: var(--accent); border: 1px solid rgba(124,92,255,0.3);
  letter-spacing: 0.03em;
}
.ap-summary { font-size: 12.5px; color: var(--txt-dim); margin-top: 7px; line-height: 1.5; }
.progress { height: 4px; background: var(--border); border-radius: 999px; margin-top: 12px; overflow: hidden; }
.progress > i {
  display: block; height: 100%; width: 0;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  border-radius: 999px; transition: width 0.4s ease;
}
.ap-pct { font-size: 11px; color: var(--txt-faint); margin-top: 5px; font-family: var(--mono); }
.subtasks { padding: 6px 0; }
.st-row {
  display: flex; align-items: flex-start; gap: 11px; padding: 9px 17px;
  font-size: 13px; border-bottom: 1px solid rgba(38,38,54,0.5);
}
.st-body { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 3px; }
.st-row:last-child { border-bottom: 0; }
.st-icon { width: 18px; text-align: center; flex-shrink: 0; }
.st-icon .spin {
  display: inline-block; width: 13px; height: 13px; border-radius: 50%;
  border: 2px solid var(--accent-soft); border-top-color: var(--accent);
  animation: rot 0.7s linear infinite;
}
@keyframes rot { to { transform: rotate(360deg); } }
.st-title { color: var(--txt); }
.st-row.pending .st-title { color: var(--txt-faint); }
.st-row.failed .st-title { color: var(--err); }
.st-meta { font-family: var(--mono); font-size: 11px; color: var(--txt-faint); display: flex; gap: 9px; flex-wrap: wrap; }
.st-files { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 2px; }
.st-file {
  font-family: var(--mono); font-size: 10px; padding: 1px 6px; border-radius: 4px;
  border: 1px solid var(--border); color: var(--txt-dim); max-width: 160px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.st-file.written { border-color: var(--ok); color: var(--ok); background: rgba(61,220,132,0.07); }
.st-file.patched { border-color: var(--warn); color: var(--warn); background: rgba(255,178,76,0.07); }
.st-chip { padding: 2px 7px; border-radius: 5px; background: var(--panel); border: 1px solid var(--border); }
.st-chip.agent { color: var(--accent); border-color: var(--accent); text-transform: capitalize; }
.ap-final { padding: 16px 17px; border-top: 1px solid var(--border); }
.ap-final .ap-final-head {
  font-size: 11.5px; font-weight: 600; color: var(--txt-faint);
  text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 10px;
  display: flex; gap: 9px; align-items: center;
}
.cost { color: var(--ok); font-family: var(--mono); }

/* ── Composer ───────────────────────────────────────────────────────────── */
footer {
  padding: 12px 22px 18px; border-top: 1px solid color-mix(in srgb, var(--border) 70%, transparent);
  background: color-mix(in srgb, var(--bg-2) 75%, transparent); backdrop-filter: blur(20px);
}
.composer { max-width: 820px; margin: 0 auto; }
.cmd-hints { display: flex; gap: 6px; margin-bottom: 9px; flex-wrap: wrap; align-items: center; }
.cmd-hint {
  font-family: var(--mono); font-size: 11px; padding: 3px 9px; border-radius: 7px;
  border: 1px solid var(--border); color: var(--txt-faint); cursor: pointer; background: var(--panel);
  transition: all 0.13s;
}
.cmd-hint:hover { border-color: var(--accent); color: var(--accent); }
.input-wrap {
  display: flex; flex-direction: column; background: var(--panel);
  border: 1px solid var(--border-2); border-radius: 16px;
  padding: 0; overflow: hidden;
  transition: border-color 0.2s, box-shadow 0.3s;
  box-shadow: 0 4px 20px rgba(0,0,0,0.15);
}
.input-wrap:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft),
              0 8px 32px color-mix(in srgb, var(--accent) 12%, transparent),
              0 4px 20px rgba(0,0,0,0.15);
}

/* Image preview strip */
.image-preview-bar {
  display: flex; flex-wrap: wrap; gap: 6px;
  padding: 8px 12px 4px; border-bottom: 1px solid var(--border);
}
.img-thumb {
  position: relative; width: 56px; height: 56px; border-radius: 7px;
  overflow: hidden; flex-shrink: 0; background: var(--surface);
  border: 1px solid var(--border);
}
.img-thumb img { width: 100%; height: 100%; object-fit: cover; }
.img-thumb-rm {
  position: absolute; top: 2px; right: 2px; width: 16px; height: 16px;
  border-radius: 50%; background: rgba(0,0,0,0.7); border: 0; color: #fff;
  font-size: 10px; cursor: pointer; display: grid; place-items: center; line-height: 1;
}

/* Inner row: textarea + action buttons */
.input-row {
  display: flex; align-items: flex-end; gap: 8px; padding: 8px 8px 8px 16px;
}
textarea {
  flex: 1; background: transparent; border: 0; resize: none; color: var(--txt);
  font-family: var(--sans); font-size: 14.5px; line-height: 1.5; max-height: 180px;
  outline: none; padding: 6px 0;
}
textarea::placeholder { color: var(--txt-faint); }

/* Attach button */
.attach-btn {
  width: 38px; height: 38px; border-radius: 11px; border: 1px solid var(--border);
  cursor: pointer; flex-shrink: 0; background: transparent; color: var(--txt-dim);
  display: grid; place-items: center; transition: border-color 0.15s, color 0.15s;
}
.attach-btn svg { width: 16px; height: 16px; }
.attach-btn:hover { border-color: var(--accent); color: var(--accent); }
.attach-btn.has-images { border-color: var(--accent-2); color: var(--accent-2); }

/* Send button */
.send {
  width: 38px; height: 38px; border-radius: 11px; border: 0; cursor: pointer; flex-shrink: 0;
  background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: white;
  display: grid; place-items: center; transition: transform 0.15s, opacity 0.15s, box-shadow 0.2s;
  box-shadow: 0 4px 16px color-mix(in srgb, var(--accent) 40%, transparent);
}
.send:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px color-mix(in srgb, var(--accent) 55%, transparent);
}
.send:disabled { opacity: 0.4; cursor: not-allowed; transform: none; }
.send svg { width: 18px; height: 18px; }

/* Stop state */
.send.is-stop {
  background: var(--err-soft); border: 1px solid var(--err); color: var(--err);
}
.send.is-stop:hover { background: rgba(255,92,114,0.2); transform: none; }

/* Mic button */
.mic-btn {
  width: 38px; height: 38px; border-radius: 11px; border: 1px solid var(--border);
  cursor: pointer; flex-shrink: 0; background: var(--panel); color: var(--txt-dim);
  display: grid; place-items: center; transition: border-color 0.15s, color 0.15s, background 0.15s;
}
.mic-btn svg { width: 16px; height: 16px; }
.mic-btn:hover { border-color: var(--accent); color: var(--accent); }
.mic-btn.recording {
  border-color: var(--err); color: var(--err); background: var(--err-soft);
  animation: mic-pulse 1s ease-in-out infinite;
}
@keyframes mic-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(255, 92, 114, 0.4); }
  50%       { box-shadow: 0 0 0 6px rgba(255, 92, 114, 0); }
}

.hint-row { font-size: 11px; color: var(--txt-faint); margin-top: 8px; text-align: center; }
kbd {
  font-family: var(--mono); background: var(--panel); border: 1px solid var(--border);
  border-radius: 4px; padding: 0 5px; font-size: 10.5px;
}

/* ── OS Dashboard (welcome screen) ─────────────────────────────────────── */
@keyframes sv-rise {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}
.welcome { width: 100%; text-align: left; margin-top: 0; color: var(--txt); }
.welcome > * { animation: sv-rise 0.4s ease both; }
.welcome > *:nth-child(1) { animation-delay: 0.05s; }
.welcome > *:nth-child(2) { animation-delay: 0.12s; }
.welcome > *:nth-child(3) { animation-delay: 0.18s; }
.welcome > *:nth-child(4) { animation-delay: 0.24s; }
.welcome > *:nth-child(5) { animation-delay: 0.30s; }
.welcome > *:nth-child(6) { animation-delay: 0.36s; }
.welcome > *:nth-child(7) { animation-delay: 0.42s; }
.welcome > *:nth-child(8) { animation-delay: 0.48s; }

/* Accent top rule */
.os-topline {
  height: 2px; margin-bottom: 0;
  background: linear-gradient(90deg, transparent 0%, var(--accent) 30%, var(--accent-2) 70%, transparent 100%);
  background-size: 200%;
  box-shadow: 0 0 28px var(--accent), 0 0 60px color-mix(in srgb, var(--accent) 30%, transparent);
  animation: topline-shift 5s ease-in-out infinite;
}
@keyframes topline-shift {
  0%, 100% { background-position: 0%; }
  50%       { background-position: 100%; }
}

.os-hero {
  display: flex; justify-content: space-between; align-items: center;
  gap: 24px; padding: 32px 0 32px;
  border-bottom: 1px solid var(--border); margin-bottom: 0; position: relative;
  overflow: hidden;
}
.os-hero::before {
  content: ""; position: absolute;
  top: -40px; left: -60px; right: -60px; bottom: -20px;
  background: radial-gradient(ellipse 80% 120% at 12% 50%, var(--grad-1), transparent 55%),
              radial-gradient(ellipse 50% 80% at 90% 50%, var(--grad-2), transparent 65%);
  pointer-events: none; z-index: 0;
  animation: hero-drift 10s ease-in-out infinite alternate;
}
@keyframes hero-drift {
  from { opacity: 0.75; transform: scale(1) translateX(0); }
  to   { opacity: 1;    transform: scale(1.06) translateX(-1.5%); }
}
.os-hero-left { flex: 1; position: relative; z-index: 1; min-width: 0; }
.os-title {
  font-size: 64px; font-weight: 800; letter-spacing: -0.05em; line-height: 1;
  background: linear-gradient(130deg, #fff 10%, var(--accent) 55%, var(--accent-2) 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  margin-bottom: 10px;
  filter: drop-shadow(0 0 40px color-mix(in srgb, var(--accent) 30%, transparent));
}
.os-title span {
  -webkit-text-fill-color: var(--txt-dim);
  font-weight: 400; font-size: 0.38em; letter-spacing: 0em;
  display: block; margin-top: 6px; font-family: var(--mono);
}
.os-tagline {
  font-size: 11.5px; color: var(--txt-faint); font-family: var(--mono); line-height: 1.7;
}
.os-tagline::before { content: "$ "; color: var(--accent); }

/* Hero stats grid — 4 numbers replacing single count */
.os-hero-stats {
  display: grid; grid-template-columns: 1fr 1fr; gap: 8px;
  flex-shrink: 0; position: relative; z-index: 1;
}
.os-hstat {
  background: color-mix(in srgb, var(--accent) 7%, var(--panel));
  border: 1px solid color-mix(in srgb, var(--accent) 25%, transparent);
  border-radius: 14px; padding: 14px 20px; text-align: center; min-width: 92px;
  transition: box-shadow 0.25s, transform 0.2s, border-color 0.2s;
  backdrop-filter: blur(8px);
}
.os-hstat:hover {
  box-shadow: 0 0 28px color-mix(in srgb, var(--accent) 20%, transparent),
              0 0 0 1px color-mix(in srgb, var(--accent) 40%, transparent);
  transform: translateY(-2px);
}
.os-hstat-n {
  font-size: 36px; font-weight: 800; letter-spacing: -0.05em; line-height: 1;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  font-variant-numeric: tabular-nums;
}
.os-hstat-l {
  font-size: 9.5px; color: var(--txt-faint); font-family: var(--mono);
  text-transform: uppercase; letter-spacing: 0.1em; margin-top: 5px;
}

/* System status bar */
.os-sys-status {
  display: flex; align-items: center; gap: 0;
  font-family: var(--mono); font-size: 10.5px; color: var(--txt-faint);
  border: 1px solid color-mix(in srgb, var(--border) 70%, transparent);
  border-radius: 10px; padding: 8px 0; margin-bottom: 28px;
  overflow-x: auto; white-space: nowrap;
  background: color-mix(in srgb, var(--panel) 50%, transparent);
  backdrop-filter: blur(8px);
}
.oss-item { display: flex; align-items: center; gap: 6px; padding: 0 14px; }
.oss-item:not(:first-child) { border-left: 1px solid var(--border); }
.oss-dot {
  width: 5px; height: 5px; border-radius: 50%;
  background: var(--ok); box-shadow: 0 0 6px var(--ok); flex-shrink: 0;
  animation: prod-pulse 2.4s ease-in-out infinite;
}
.oss-dot.warn { background: var(--warn); box-shadow: 0 0 6px var(--warn); }
.oss-val { color: var(--txt); }
.oss-accent { color: var(--accent); }

.os-section-label {
  font-size: 9.5px; font-weight: 700; letter-spacing: 0.14em;
  color: var(--txt-faint); text-transform: uppercase;
  margin: 32px 0 16px; display: flex; align-items: center; gap: 10px;
}
.os-section-label::before {
  content: ""; display: block; flex-shrink: 0;
  width: 20px; height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  border-radius: 2px; box-shadow: 0 0 10px var(--accent), 0 0 20px color-mix(in srgb, var(--accent) 40%, transparent);
}
.os-section-label::after {
  content: ""; flex: 1; height: 1px;
  background: linear-gradient(90deg, var(--border), transparent);
}

/* Pipeline — circle node track */
.os-pipeline {
  display: flex; align-items: flex-start;
  gap: 0; position: relative; padding: 18px 0 8px;
}
.os-pipe-track {
  position: absolute; top: 42px; left: 7%; right: 7%; height: 2px;
  background: linear-gradient(90deg, transparent 0%, var(--accent) 25%, var(--accent-2) 75%, transparent 100%);
  background-size: 300% 100%;
  animation: pipe-flow 5s linear infinite;
  opacity: 0.55;
  border-radius: 2px;
}
@keyframes pipe-flow {
  from { background-position: 100% 0; }
  to   { background-position: -200% 0; }
}
.os-pn {
  flex: 1; display: flex; flex-direction: column;
  align-items: center; gap: 9px; position: relative; z-index: 1; cursor: default;
}
.os-pn-dot {
  width: 62px; height: 62px; border-radius: 50%;
  background: color-mix(in srgb, var(--c, var(--accent)) 14%, var(--bg-2));
  border: 2px solid var(--c, var(--accent));
  box-shadow: 0 0 0 5px color-mix(in srgb, var(--c, var(--accent)) 10%, transparent),
              0 0 24px color-mix(in srgb, var(--c, var(--accent)) 30%, transparent);
  display: flex; align-items: center; justify-content: center;
  transition: box-shadow 0.25s, transform 0.2s;
}
.os-pn:hover .os-pn-dot {
  box-shadow: 0 0 0 12px color-mix(in srgb, var(--c, var(--accent)) 16%, transparent),
              0 0 56px color-mix(in srgb, var(--c, var(--accent)) 60%, transparent);
  transform: translateY(-4px) scale(1.08);
}
.os-pn-dot span {
  font-family: var(--mono); font-size: 13px; font-weight: 700;
  color: var(--c, var(--accent));
}
.os-pn-label {
  font-size: 12.5px; font-weight: 650; color: var(--txt); text-align: center;
  transition: color 0.15s;
}
.os-pn:hover .os-pn-label { color: var(--c, var(--accent)); }
.os-pn-sub {
  font-size: 10px; color: var(--txt-faint); text-align: center;
  line-height: 1.4; max-width: 82px; font-family: var(--mono);
}

/* Agent roster */
.os-agents {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 10px;
}
.os-agent {
  background: linear-gradient(160deg,
    color-mix(in srgb, var(--c, var(--accent)) 9%, var(--panel)) 0%,
    var(--panel) 60%);
  border: 1px solid color-mix(in srgb, var(--border) 70%, var(--c, var(--accent)) 30%);
  border-top: 2px solid var(--c, var(--accent));
  border-radius: 12px; padding: 16px 15px 13px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.12),
              inset 0 1px 0 color-mix(in srgb, var(--c, var(--accent)) 15%, transparent);
  transition: box-shadow 0.25s, transform 0.2s, border-color 0.2s;
  position: relative; overflow: hidden;
}
.os-agent::after {
  content: ""; position: absolute; inset: 0; border-radius: inherit;
  background: radial-gradient(ellipse 60% 50% at 50% -10%, color-mix(in srgb, var(--c, var(--accent)) 10%, transparent), transparent);
  pointer-events: none;
}
.os-agent:hover {
  box-shadow:
    0 12px 40px color-mix(in srgb, var(--c, var(--accent)) 22%, transparent),
    0 0 0 1px color-mix(in srgb, var(--c, var(--accent)) 40%, transparent),
    inset 0 1px 0 color-mix(in srgb, var(--c, var(--accent)) 25%, transparent);
  transform: translateY(-3px);
  border-color: color-mix(in srgb, var(--c, var(--accent)) 60%, transparent);
}
.os-agent-name {
  font-size: 13px; font-weight: 700; color: var(--txt); margin-bottom: 8px;
  display: flex; align-items: center; gap: 8px; line-height: 1.3;
}
.os-agent-desc { font-size: 11px; color: var(--txt-dim); line-height: 1.6; margin-bottom: 10px; }
.os-tags { display: flex; flex-wrap: wrap; gap: 5px; }
.os-tags span {
  font-size: 9.5px; font-family: var(--mono); padding: 2px 8px; border-radius: 5px;
  background: color-mix(in srgb, var(--c, var(--accent)) 10%, transparent);
  border: 1px solid color-mix(in srgb, var(--c, var(--accent)) 30%, transparent);
  color: var(--c, var(--accent)); letter-spacing: 0.04em; font-weight: 500;
}

/* Products row */
.os-products {
  display: flex; gap: 8px; flex-wrap: wrap;
}
.os-prod {
  flex: 1; min-width: 100px;
  background: linear-gradient(160deg, var(--panel-2) 0%, var(--panel) 100%);
  border: 1px solid var(--border); border-radius: 12px;
  padding: 16px 14px 14px; text-align: center;
  transition: background 0.2s, border-color 0.2s, box-shadow 0.25s, transform 0.2s;
  position: relative; overflow: hidden;
}
.os-prod::before {
  content: "";
  position: absolute; top: 10px; right: 10px;
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--ok);
  box-shadow: 0 0 6px var(--ok);
  animation: prod-pulse 2.4s ease-in-out infinite;
}
@keyframes prod-pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 5px var(--ok); }
  50% { opacity: 0.55; box-shadow: 0 0 12px var(--ok); }
}
.os-prod:hover {
  background: linear-gradient(160deg, color-mix(in srgb, var(--accent) 8%, var(--panel-2)) 0%, var(--panel-2) 100%);
  border-color: color-mix(in srgb, var(--accent) 50%, transparent);
  box-shadow: 0 8px 24px color-mix(in srgb, var(--accent) 14%, transparent);
  transform: translateY(-2px);
}
.os-prod-name { font-size: 15px; font-weight: 650; color: var(--txt); margin-bottom: 4px; }
.os-prod-type { font-size: 11px; color: var(--accent); font-family: var(--mono); opacity: 0.8; }

/* ── Visual presentation blocks (```html rendered live) ─────────────────── */
.pres-block {
  width: 100%; margin: 10px 0;
  border-radius: 12px; overflow: hidden;
  border: 1px solid var(--border);
  font-family: var(--sans); font-size: 13px;
  line-height: 1.5; color: var(--txt);
}
.pres-block * { box-sizing: border-box; }

/* ── Diff blocks (```diff rendered with Accept/Reject) ──────────────────── */
.diff-block {
  border: 1px solid var(--border); border-radius: 11px;
  overflow: hidden; margin: 0 0 14px; background: var(--code-bg);
  font-family: var(--mono); font-size: 12.5px;
}
.diff-hbar {
  display: flex; align-items: center; gap: 8px; justify-content: space-between;
  padding: 7px 14px; background: var(--panel); border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}
.diff-path { font-size: 11px; color: var(--txt-faint); flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.diff-btns { display: flex; gap: 6px; flex-shrink: 0; }
.diff-accept, .diff-reject {
  font-size: 11px; padding: 3px 11px; border-radius: 6px;
  cursor: pointer; font-family: var(--mono); border: 1px solid; transition: all 0.12s;
}
.diff-accept { background: rgba(61,220,132,.1); color: var(--ok); border-color: rgba(61,220,132,.4); }
.diff-accept:hover:not(:disabled) { background: rgba(61,220,132,.2); }
.diff-reject { background: var(--err-soft); color: var(--err); border-color: rgba(255,92,114,.4); }
.diff-reject:hover:not(:disabled) { background: rgba(255,92,114,.2); }
.diff-accept:disabled, .diff-reject:disabled { opacity: 0.45; cursor: not-allowed; }
.diff-status { font-size: 11px; padding: 2px 8px; border-radius: 5px; white-space: nowrap; }
.diff-status.applied { color: var(--ok); }
.diff-status.rejected { color: var(--txt-faint); }
.diff-status.error { color: var(--err); }
.diff-pre {
  padding: 10px 0; overflow-x: auto; margin: 0;
  border: none; background: transparent; border-radius: 0;
}
.diff-pre code { display: block; line-height: 1.55; }
.diff-add  { display: block; background: rgba(61,220,132,.08); color: #4ade80; padding: 0 16px; }
.diff-rem  { display: block; background: rgba(255,92,114,.08);  color: #f87171; padding: 0 16px; }
.diff-hunk { display: block; color: #38bdf8; padding: 0 16px; }
.diff-hdr  { display: block; color: var(--txt-faint); padding: 0 16px; }
.diff-ctx  { display: block; color: var(--txt-dim);   padding: 0 16px; }

/* ── Scrollbars ─────────────────────────────────────────────────────────── */
main::-webkit-scrollbar { width: 9px; }
main::-webkit-scrollbar-thumb { background: var(--border-2); border-radius: 9px; border: 2px solid var(--bg); }
.bubble pre::-webkit-scrollbar { height: 7px; }
.bubble pre::-webkit-scrollbar-thumb { background: var(--border-2); border-radius: 9px; }

/* ── Header action buttons (terminal / preview toggles) ─────────────────── */
.hdr-btn {
  background: var(--panel); border: 1px solid var(--border);
  color: var(--txt-dim); border-radius: 8px; width: 32px; height: 32px;
  cursor: pointer; font-size: 15px; display: grid; place-items: center;
  transition: all 0.13s; flex-shrink: 0;
}
.hdr-btn:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); }
.hdr-btn.active { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); }

/* ── Open Brain toggle ──────────────────────────────────────────────────── */
.open-brain-btn {
  width: auto; padding: 0 11px; gap: 7px; font-size: 11.5px; font-weight: 600;
  letter-spacing: 0.01em; font-family: var(--sans);
}
.open-brain-btn .ob-dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--txt-faint); flex-shrink: 0; transition: all 0.18s;
}
.open-brain-btn.on {
  border-color: var(--ok);
  color: var(--ok);
  background: color-mix(in srgb, var(--ok) 12%, transparent);
}
.open-brain-btn.on .ob-dot {
  background: var(--ok);
  box-shadow: 0 0 8px var(--ok), 0 0 0 3px color-mix(in srgb, var(--ok) 22%, transparent);
  animation: prod-pulse 2.4s ease-in-out infinite;
}
@media (max-width: 720px) { .open-brain-btn .ob-label { display: none; } }

#sv-toast {
  position: fixed; bottom: 22px; left: 50%; transform: translateX(-50%) translateY(12px);
  background: var(--panel-2); border: 1px solid var(--border-2); color: var(--txt);
  padding: 10px 16px; border-radius: 10px; font-size: 12.5px; font-family: var(--sans);
  box-shadow: 0 8px 30px rgba(0,0,0,0.35); z-index: 9999; max-width: 80vw;
  opacity: 0; pointer-events: none; transition: opacity 0.22s, transform 0.22s;
  backdrop-filter: blur(12px);
}
#sv-toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ── Sidebar tabs ───────────────────────────────────────────────────────── */
.sb-tabs {
  display: flex; gap: 4px; padding: 6px 8px 0;
  border-bottom: 1px solid var(--border); flex-shrink: 0;
}
.sb-tab {
  flex: 1; padding: 6px 0; border-radius: 7px 7px 0 0; border: none;
  background: none; color: var(--txt-faint); font-size: 10.5px; font-weight: 600;
  font-family: var(--sans); cursor: pointer; letter-spacing: 0.02em;
  transition: color 0.12s, background 0.12s;
  border-bottom: 2px solid transparent; margin-bottom: -1px;
}
.sb-tab:hover { color: var(--txt-dim); }
.sb-tab.active { color: var(--accent); border-bottom-color: var(--accent); }

.sb-panel { display: flex; flex-direction: column; flex: 1; overflow: hidden; }

/* ── Guide panel ─────────────────────────────────────────────────────────── */
.guide-scroll {
  overflow-y: auto; flex: 1; padding: 10px 8px 16px;
}
.guide-scroll::-webkit-scrollbar { width: 4px; }
.guide-scroll::-webkit-scrollbar-thumb { background: var(--border-2); border-radius: 4px; }

.guide-section { margin-bottom: 18px; }

.guide-sh {
  font-size: 9px; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--txt-faint); padding: 0 4px; margin-bottom: 7px;
  display: flex; align-items: center; gap: 7px;
}
.guide-sh::before {
  content: ""; display: block; width: 10px; height: 1.5px; flex-shrink: 0;
  background: var(--accent); border-radius: 2px;
}

.guide-item {
  padding: 7px 8px; border-radius: 8px; cursor: pointer;
  margin-bottom: 2px; transition: background 0.12s;
}
.guide-item:hover { background: var(--panel); }
.guide-cmd {
  font-family: var(--mono); font-size: 12px; color: var(--accent); font-weight: 600;
  display: block; margin-bottom: 2px;
}
.guide-desc { font-size: 10.5px; color: var(--txt-dim); line-height: 1.4; }

.guide-tip {
  font-size: 10.5px; color: var(--txt-dim); padding: 7px 9px;
  border-left: 2px solid var(--border-2);
  border-radius: 0 7px 7px 0; margin-bottom: 5px; line-height: 1.5;
}
.guide-tip strong { color: var(--txt); font-weight: 600; }
.guide-tip code {
  font-family: var(--mono); font-size: 10px; color: var(--accent);
  background: var(--accent-soft); padding: 1px 4px; border-radius: 4px;
}
.guide-tip.bad { border-left-color: var(--err); color: var(--txt-faint); }
.guide-tip.good { border-left-color: var(--ok); }

.guide-eg {
  font-family: var(--mono); font-size: 10px; color: var(--txt-dim);
  padding: 6px 9px; background: var(--bg-2); border: 1px solid var(--border);
  border-radius: 7px; margin-bottom: 5px; cursor: pointer;
  line-height: 1.5; transition: border-color 0.12s, color 0.12s, background 0.12s;
  display: block;
}
.guide-eg:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); }

/* ── Project selector (file tree panel) ─────────────────────────────────── */
.sb-proj-sel {
  padding: 8px; border-bottom: 1px solid var(--border); flex-shrink: 0;
}
.sb-proj-sel select, .term-proj-sel, .prev-port-sel {
  width: 100%; background: var(--panel); border: 1px solid var(--border);
  color: var(--txt); border-radius: 7px; padding: 5px 8px;
  font-size: 12px; font-family: var(--mono); cursor: pointer; outline: none;
  transition: border-color 0.12s;
}
.sb-proj-sel select:hover, .term-proj-sel:hover, .prev-port-sel:hover {
  border-color: var(--border-2);
}
.sb-proj-sel select:focus, .term-proj-sel:focus, .prev-port-sel:focus {
  border-color: var(--accent);
}

/* ── File tree ──────────────────────────────────────────────────────────── */
.file-tree {
  flex: 1; overflow-y: auto; padding: 6px 0;
  font-family: var(--mono); font-size: 11.5px;
}
.file-tree::-webkit-scrollbar { width: 4px; }
.file-tree::-webkit-scrollbar-thumb { background: var(--border-2); border-radius: 4px; }

.ft-empty { padding: 16px 12px; color: var(--txt-faint); font-size: 12px; line-height: 1.6; }
.ft-loading { padding: 12px; color: var(--txt-faint); font-size: 11.5px; font-family: var(--mono); }

.ft-entry {
  display: flex; align-items: center; gap: 5px; cursor: pointer;
  padding: 3px 10px; border-radius: 0; white-space: nowrap;
  overflow: hidden; text-overflow: ellipsis;
  transition: background 0.1s; color: var(--txt-dim);
}
.ft-entry:hover { background: var(--panel); color: var(--txt); }
.ft-entry.ft-dir { color: var(--txt); font-weight: 500; }
.ft-entry.ft-dir::before { content: "▸"; font-size: 9px; color: var(--txt-faint); width: 10px; flex-shrink: 0; }
.ft-entry.ft-dir.open::before { content: "▾"; }
.ft-entry.ft-file::before { content: "·"; font-size: 14px; color: var(--txt-faint); width: 10px; flex-shrink: 0; text-align: center; }
.ft-entry.ft-file:hover { color: var(--accent); }

/* ── Terminal pane ──────────────────────────────────────────────────────── */
.term-pane {
  border-top: 1px solid var(--border); background: var(--code-bg);
  display: flex; flex-direction: column; flex-shrink: 0;
  height: 220px; min-height: 120px;
}
.term-hdr {
  display: flex; align-items: center; gap: 7px; padding: 5px 10px;
  background: var(--panel); border-bottom: 1px solid var(--border); flex-shrink: 0;
}
.term-title { font-size: 11.5px; color: var(--txt-dim); font-family: var(--mono); flex-shrink: 0; }
.term-proj-sel { width: auto; flex: 0 0 110px; padding: 3px 6px; font-size: 11px; }
.term-input {
  flex: 1; background: transparent; border: 1px solid var(--border); border-radius: 6px;
  color: var(--txt); font-family: var(--mono); font-size: 12px;
  padding: 3px 8px; outline: none;
}
.term-input:focus { border-color: var(--accent); }
.term-run, .term-x {
  background: var(--panel); border: 1px solid var(--border); color: var(--txt-faint);
  border-radius: 6px; width: 26px; height: 26px; cursor: pointer; flex-shrink: 0;
  display: grid; place-items: center; font-size: 13px; transition: all 0.12s;
}
.term-run:hover { border-color: var(--ok); color: var(--ok); }
.term-x:hover  { border-color: var(--err); color: var(--err); }
.term-out {
  flex: 1; overflow-y: auto; padding: 8px 12px;
  font-family: var(--mono); font-size: 11.5px; line-height: 1.6; color: var(--txt-dim);
}
.term-out::-webkit-scrollbar { width: 5px; }
.term-out::-webkit-scrollbar-thumb { background: var(--border-2); border-radius: 4px; }
.term-line { margin: 1px 0; white-space: pre-wrap; word-break: break-all; }
.term-line.term-cmd   { color: var(--accent); }
.term-line.term-err   { color: var(--err); }
.term-line.term-ok    { color: var(--ok); }
.term-line.term-meta  { color: var(--txt-faint); font-size: 10.5px; }

/* ── Preview pane (right side) ──────────────────────────────────────────── */
.preview-pane {
  width: 480px; flex-shrink: 0; display: flex; flex-direction: column;
  border-left: 1px solid var(--border); background: var(--bg-2);
  transition: width 0.22s ease, opacity 0.22s ease;
}
.preview-pane.preview-hidden { width: 0; opacity: 0; pointer-events: none; overflow: hidden; }
.preview-hdr {
  display: flex; align-items: center; gap: 7px; padding: 7px 12px;
  background: var(--panel); border-bottom: 1px solid var(--border); flex-shrink: 0;
}
.preview-title { font-size: 11.5px; color: var(--txt-dim); font-family: var(--mono); flex-shrink: 0; }
.prev-port-sel { flex: 1; padding: 3px 6px; font-size: 11px; }
.prev-btn {
  background: var(--panel); border: 1px solid var(--border); color: var(--txt-faint);
  border-radius: 6px; width: 26px; height: 26px; cursor: pointer; flex-shrink: 0;
  display: grid; place-items: center; font-size: 13px; transition: all 0.12s;
}
.prev-btn:hover { border-color: var(--accent); color: var(--accent); }
#previewFrame { flex: 1; border: none; background: white; }

/* ── Docs / RAG panel ──────────────────────────────────────── */
.docs-upload-area {
  margin: 10px 10px 0;
  border: 1.5px dashed var(--border-2);
  border-radius: 8px;
  background: var(--panel-2);
  transition: border-color 0.15s, background 0.15s;
}
.docs-upload-area.drag-over {
  border-color: var(--accent);
  background: var(--accent-soft);
}
.docs-drop-hint {
  display: flex; flex-direction: column; align-items: center; gap: 4px;
  padding: 14px 12px; color: var(--txt-dim); font-size: 12px;
}
.docs-drop-hint svg { color: var(--txt-faint); margin-bottom: 2px; }
.docs-drop-hint small { color: var(--txt-faint); font-size: 10.5px; }
.docs-pick-btn {
  background: none; border: none; color: var(--accent); cursor: pointer;
  font-size: 12px; padding: 0; text-decoration: underline;
}
.docs-pick-btn:hover { color: var(--accent-2); }

.docs-progress { padding: 12px 14px; }
.docs-prog-bar {
  height: 3px; background: var(--border); border-radius: 2px; overflow: hidden;
  margin-bottom: 6px;
}
.docs-prog-fill {
  height: 100%; background: var(--accent); border-radius: 2px; width: 0%;
  transition: width 0.3s ease;
}
.docs-prog-label { font-size: 11px; color: var(--txt-dim); font-family: var(--mono); }

.docs-list-hdr {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 14px 4px; font-size: 10.5px; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.07em; color: var(--txt-faint);
}
.docs-count {
  font-size: 10px; background: var(--panel-2); color: var(--txt-dim);
  padding: 1px 6px; border-radius: 20px; border: 1px solid var(--border);
}
.docs-list { padding: 2px 0 8px; }
.docs-empty {
  padding: 12px 14px; font-size: 11.5px; color: var(--txt-faint); line-height: 1.6;
}
.doc-item {
  display: flex; align-items: center; gap: 8px; padding: 7px 14px;
  transition: background 0.1s; cursor: default;
}
.doc-item:hover { background: var(--panel-2); }
.doc-icon { color: var(--txt-faint); flex-shrink: 0; }
.doc-info { flex: 1; min-width: 0; }
.doc-name {
  font-size: 12px; color: var(--txt); white-space: nowrap;
  overflow: hidden; text-overflow: ellipsis;
}
.doc-meta { font-size: 10.5px; color: var(--txt-faint); margin-top: 1px; }
.doc-del {
  background: none; border: none; color: var(--txt-faint); cursor: pointer;
  padding: 3px; border-radius: 4px; opacity: 0; transition: opacity 0.1s, color 0.1s;
  display: grid; place-items: center;
}
.doc-item:hover .doc-del { opacity: 1; }
.doc-del:hover { color: var(--err); }

/* ── Claude thinking panel ─────────────────────────────────────────────────── */
.sv-thinking {
  border: 1px solid color-mix(in srgb, var(--accent) 22%, transparent);
  border-radius: 10px;
  margin-bottom: 8px;
  overflow: hidden;
  font-family: var(--mono);
  font-size: 11.5px;
  background: color-mix(in srgb, var(--accent) 4%, var(--bg-2));
}
.sv-think-header {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 8px 12px;
  cursor: pointer;
  user-select: none;
  border-bottom: 1px solid transparent;
  transition: background 0.12s, border-color 0.2s;
}
.sv-thinking.sv-thinking-open .sv-think-header {
  border-bottom-color: color-mix(in srgb, var(--accent) 18%, transparent);
}
.sv-think-header:hover { background: color-mix(in srgb, var(--accent) 8%, transparent); }
.sv-think-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: color-mix(in srgb, var(--accent) 60%, transparent);
  flex-shrink: 0;
  transition: background 0.3s;
}
.sv-thinking-active .sv-think-dot {
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
  animation: think-pulse 1.2s ease-in-out infinite;
}
@keyframes think-pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 8px var(--accent); }
  50%       { opacity: 0.4; box-shadow: 0 0 2px var(--accent); }
}
.sv-think-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: color-mix(in srgb, var(--accent) 70%, var(--txt-dim));
  flex: 1;
}
.sv-think-chevron {
  font-size: 11px;
  color: var(--txt-faint);
  transition: transform 0.18s;
}
.sv-thinking.sv-thinking-open .sv-think-chevron { transform: rotate(180deg); }
.sv-think-body {
  display: none;
  max-height: 260px;
  overflow-y: auto;
  padding: 10px 14px 12px;
  color: var(--txt-dim);
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-word;
  font-size: 11px;
}
.sv-thinking.sv-thinking-open .sv-think-body { display: block; }
.sv-thinking.sv-thinking-active .sv-think-body { display: block; }

/* ── Opus reasoning state (pre-token placeholder) ───────────────────────── */
.sv-reasoning-state {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--txt-faint);
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.04em;
  padding: 4px 0;
}
.sv-r-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
  animation: think-pulse 1s ease-in-out infinite;
  flex-shrink: 0;
}
