:root {
  --bg: #0b0d10;
  --bg-elev: #12151a;
  --bg-card: #161a21;
  --bg-card-hover: #1a1f28;
  --bg-selected: #1c2430;
  --border: #262c36;
  --border-focus: #3d7eff;
  --text: #e8ecf1;
  --text-muted: #8b95a5;
  --text-dim: #5c6675;
  --accent: #3d7eff;
  --accent-soft: rgba(61, 126, 255, 0.14);
  --approve: #22c55e;
  --approve-soft: rgba(34, 197, 94, 0.12);
  --reject: #f43f5e;
  --reject-soft: rgba(244, 63, 94, 0.12);
  --pending: #f59e0b;
  --pending-soft: rgba(245, 158, 11, 0.12);
  --diff-add: #1a3a2a;
  --diff-add-text: #86efac;
  --diff-del: #3a1a22;
  --diff-del-text: #fda4af;
  --diff-meta: #64748b;
  --radius: 14px;
  --radius-sm: 8px;
  --shadow: 0 0 0 1px rgba(255,255,255,0.04), 0 12px 40px rgba(0,0,0,0.45);
  --font: "Inter", system-ui, -apple-system, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
}

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

html { color-scheme: dark; }

body {
  font-family: var(--font);
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(61, 126, 255, 0.12), transparent 55%),
    radial-gradient(900px 500px at 90% 0%, rgba(34, 197, 94, 0.06), transparent 50%),
    var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.app {
  max-width: 760px;
  margin: 0 auto;
  padding: 28px 20px 64px;
}

/* —— Topbar —— */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 22px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.logo {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: linear-gradient(145deg, #1e2a3d, #121820);
  border: 1px solid var(--border);
  display: grid;
  place-items: center;
  color: var(--accent);
  flex-shrink: 0;
}

.brand h1 {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.subtitle {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 2px;
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 10px;
}

.demo-badge {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 5px 9px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: #93b8ff;
  border: 1px solid rgba(61, 126, 255, 0.35);
  user-select: none;
}

/* —— Toolbar —— */
.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.stats {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.stats strong { color: var(--text); font-weight: 600; }

.kbd-hints {
  display: flex;
  gap: 14px;
  font-size: 0.75rem;
  color: var(--text-dim);
}

.kbd-hints span { display: inline-flex; align-items: center; gap: 4px; }

kbd {
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 500;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-bottom-width: 2px;
  border-radius: 5px;
  padding: 1px 6px;
  color: var(--text-muted);
  min-width: 1.4em;
  text-align: center;
}

/* —— Buttons —— */
.btn {
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  padding: 8px 14px;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, color 0.15s, transform 0.1s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.btn:active { transform: scale(0.97); }

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border-color: var(--border);
}

.btn-ghost:hover {
  background: var(--bg-elev);
  color: var(--text);
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  border-color: transparent;
}

.btn-primary:hover { filter: brightness(1.08); }

.btn-approve {
  background: var(--approve-soft);
  color: var(--approve);
  border-color: rgba(34, 197, 94, 0.35);
}

.btn-approve:hover {
  background: rgba(34, 197, 94, 0.22);
}

.btn-reject {
  background: var(--reject-soft);
  color: var(--reject);
  border-color: rgba(244, 63, 94, 0.35);
}

.btn-reject:hover {
  background: rgba(244, 63, 94, 0.22);
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none;
}

/* —— Cards —— */
.feed {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px 20px 16px;
  outline: none;
  transition: border-color 0.15s, background 0.15s, box-shadow 0.15s;
  position: relative;
}

.card:hover { background: var(--bg-card-hover); }

.card.selected {
  background: var(--bg-selected);
  border-color: rgba(61, 126, 255, 0.55);
  box-shadow: 0 0 0 1px rgba(61, 126, 255, 0.25), 0 12px 40px rgba(0,0,0,0.45);
}

.card.decided {
  opacity: 0.72;
}

.card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.card-title {
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.015em;
  line-height: 1.35;
}

.chip {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 4px 9px;
  border-radius: 999px;
  white-space: nowrap;
  flex-shrink: 0;
}

.chip-pending {
  background: var(--pending-soft);
  color: #fbbf24;
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.chip-approved {
  background: var(--approve-soft);
  color: var(--approve);
  border: 1px solid rgba(34, 197, 94, 0.3);
}

.chip-rejected {
  background: var(--reject-soft);
  color: var(--reject);
  border: 1px solid rgba(244, 63, 94, 0.3);
}

.why-now {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 14px;
  padding-left: 12px;
  border-left: 2px solid rgba(61, 126, 255, 0.45);
}

.why-now strong {
  color: #a8c4ff;
  font-weight: 600;
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  display: block;
  margin-bottom: 4px;
}

.section-label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 6px;
}

.context {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  margin-bottom: 12px;
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.55;
  overflow-x: auto;
}

.context .path {
  color: #93b8ff;
  margin-bottom: 6px;
  display: block;
}

.context .line { white-space: pre-wrap; }
.context .hl { color: var(--text); background: rgba(61, 126, 255, 0.12); border-radius: 2px; }

.diff {
  background: #0a0c0f;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin-bottom: 14px;
  font-family: var(--mono);
  font-size: 0.72rem;
  line-height: 1.5;
}

.diff-header {
  padding: 8px 12px;
  background: var(--bg-elev);
  border-bottom: 1px solid var(--border);
  color: var(--diff-meta);
  display: flex;
  justify-content: space-between;
  gap: 8px;
  flex-wrap: wrap;
}

.diff-header .file { color: #93b8ff; }

.diff-body {
  padding: 8px 0;
  overflow-x: auto;
  max-height: 180px;
  overflow-y: auto;
}

.diff-line {
  padding: 0 12px;
  white-space: pre;
}

.diff-line.add { background: var(--diff-add); color: var(--diff-add-text); }
.diff-line.del { background: var(--diff-del); color: var(--diff-del-text); }
.diff-line.meta { color: var(--diff-meta); }
.diff-line.ctx { color: #94a3b8; }

.card-actions {
  display: flex;
  gap: 8px;
  align-items: center;
}

.card-meta {
  margin-left: auto;
  font-size: 0.72rem;
  color: var(--text-dim);
  font-family: var(--mono);
}

/* —— Empty —— */
.empty {
  text-align: center;
  padding: 72px 24px;
  background: var(--bg-card);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  margin-top: 8px;
}

.empty-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  border-radius: 50%;
  background: var(--approve-soft);
  color: var(--approve);
  display: grid;
  place-items: center;
  font-size: 1.5rem;
  font-weight: 700;
  border: 1px solid rgba(34, 197, 94, 0.3);
}

.empty h2 {
  font-size: 1.2rem;
  margin-bottom: 8px;
  letter-spacing: -0.02em;
}

.empty p {
  color: var(--text-muted);
  font-size: 0.9rem;
  max-width: 360px;
  margin: 0 auto 20px;
}

/* —— Footer —— */
.footer {
  margin-top: 36px;
  text-align: center;
  font-size: 0.75rem;
  color: var(--text-dim);
}

.footer strong { color: var(--text-muted); font-weight: 600; }

@media (max-width: 560px) {
  .kbd-hints { display: none; }
  .card-header { flex-direction: column; align-items: flex-start; }
  .card-actions { flex-wrap: wrap; }
  .card-meta { margin-left: 0; width: 100%; }
}