@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

:root {
  --bg: #f2f5fb;
  --card: #ffffff;
  --card-hover: #f8faff;
  --text: #15213a;
  --muted: #6a7691;
  --border: #d9e2f0;
  --accent: #4f46e5;
  --accent-light: #6366f1;
  --accent-soft: #e5e7ff;
  --accent-glow: rgba(79, 70, 229, 0.15);
  --success: #0f9d58;
  --success-soft: #e6f7ee;
  --danger: #d93025;
  --danger-soft: #fde8e6;
  --warning: #f6c945;
  --warning-soft: #fef9e7;
  --gradient-start: #4f46e5;
  --gradient-end: #7c3aed;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
}

body.dark {
  --bg: #0b0e18;
  --card: #131929;
  --card-hover: #1a2240;
  --text: #edf2ff;
  --muted: #8090b5;
  --border: #1e2a45;
  --accent: #8a7dff;
  --accent-light: #a78bfa;
  --accent-soft: #1a1740;
  --accent-glow: rgba(138, 125, 255, 0.12);
  --success: #34d399;
  --success-soft: #0d3326;
  --danger: #f87171;
  --danger-soft: #3b1515;
  --warning: #fbbf24;
  --warning-soft: #3b2e0a;
  --gradient-start: #8a7dff;
  --gradient-end: #c084fc;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.2);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.3);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.4);
}

* { box-sizing: border-box; margin: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', ui-sans-serif, system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ── App Shell ── */
.app-shell {
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: 100vh;
  gap: 12px;
  padding: 12px;
}

/* ── Cards ── */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
}
.card:hover { box-shadow: var(--shadow-md); }

/* ── Sidebar ── */
.sidebar {
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  position: sticky;
  top: 12px;
  height: calc(100vh - 24px);
  overflow-y: auto;
}
.brand { display: flex; flex-direction: column; gap: 4px; padding-bottom: 10px; border-bottom: 1px solid var(--border); }
.brand h1 {
  font-size: 0.95rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.brand-svg { width: 110px; height: 24px; }
.svg-accent { fill: var(--accent-soft); stroke: var(--accent); }
.svg-stroke { fill: none; stroke: var(--accent); stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

.menu { display: grid; gap: 4px; }
.menu button {
  text-align: left;
  padding: 10px 12px;
  border-radius: 10px;
  font-weight: 500;
  font-size: 0.9rem;
  transition: all 0.15s ease;
  border: none;
  background: transparent;
  color: var(--muted);
}
.menu button:hover { background: var(--accent-soft); color: var(--accent); transform: translateX(2px); }
.menu button.active-view { background: var(--accent-soft); color: var(--accent); font-weight: 600; }

.theme-row {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 0;
  border-top: 1px solid var(--border);
  font-size: 0.85rem;
  color: var(--muted);
}

/* ── Main Grid ── */
.main-grid { display: grid; grid-template-columns: 1fr 400px; gap: 12px; }
.center-column, .right-column { min-height: calc(100vh - 24px); }
.view { padding: 20px; min-height: calc(100vh - 56px); }
.right-column { padding: 14px; display: flex; flex-direction: column; overflow: hidden; }
.right-panel { overflow: auto; flex: 1; }
.hidden { display: none !important; }

/* ── Typography ── */
h2 {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}
h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin: 16px 0 10px;
  color: var(--text);
}

/* ── Forms ── */
button, select, input, textarea {
  font: inherit;
  border-radius: 10px;
  border: 1px solid var(--border);
  padding: 9px 12px;
  background: transparent;
  color: var(--text);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  font-size: 0.9rem;
}
input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}
button { cursor: pointer; font-weight: 500; }

label {
  display: flex;
  flex-direction: column;
  gap: 5px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--muted);
}

.btn {
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  color: #fff;
  border-color: transparent;
  padding: 9px 16px;
  font-weight: 600;
  transition: all 0.2s ease;
  box-shadow: 0 2px 8px var(--accent-glow);
}
.btn:hover { transform: translateY(-1px); box-shadow: 0 4px 16px var(--accent-glow); }
.btn:active { transform: translateY(0); }

.btn.secondary {
  background: var(--accent-soft);
  color: var(--accent);
  box-shadow: none;
  border: 1px solid var(--border);
}
.btn.secondary:hover { background: var(--accent-glow); border-color: var(--accent); }

.btn.danger { background: var(--danger); color: #fff; box-shadow: none; }
.btn.danger:hover { background: #c62828; }

.btn.success { background: var(--success); color: #fff; box-shadow: none; }

/* ── Layout Helpers ── */
.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }

.stat {
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--card);
  position: relative;
  overflow: hidden;
}
.stat::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--gradient-start), var(--gradient-end));
}
.stat strong { font-size: 1.6rem; font-weight: 800; display: block; margin-top: 4px; }

.small { font-size: 0.82rem; color: var(--muted); }
.list { display: grid; gap: 8px; margin-top: 8px; }

.item {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px;
  transition: all 0.2s ease;
  background: var(--card);
}
.item:hover { border-color: var(--accent); box-shadow: 0 2px 12px var(--accent-glow); transform: translateY(-1px); }

/* ── Textarea ── */
textarea { width: 100%; min-height: 90px; resize: vertical; }
#mainPromptInput { min-height: 190px; }

/* ── Code / JSON ── */
.code {
  font-family: 'SF Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.82rem;
  white-space: pre-wrap;
  word-break: break-word;
  background: color-mix(in oklab, var(--card), #000 6%);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px;
  line-height: 1.5;
}
.json-highlight .k { color: #c678dd; }
.json-highlight .s { color: #98c379; }
.json-highlight .n { color: #61afef; }

/* ── Tabs ── */
.tabs { display: flex; gap: 4px; margin-bottom: 10px; padding: 4px; background: color-mix(in oklab, var(--card), #000 4%); border-radius: 12px; }
.tab {
  flex: 1;
  text-align: center;
  padding: 8px 6px;
  border-radius: 9px;
  font-size: 0.82rem;
  font-weight: 500;
  border: none;
  background: transparent;
  color: var(--muted);
  transition: all 0.15s ease;
}
.tab.active { background: var(--accent-soft); color: var(--accent); font-weight: 600; }
.tab:hover:not(.active) { color: var(--text); }

/* ── Builder ── */
.builder-block {
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 12px;
  margin-bottom: 8px;
  transition: all 0.2s ease;
  background: var(--card);
}
.builder-block:hover { border-color: var(--accent-light); }
.builder-head { display: flex; justify-content: space-between; align-items: center; gap: 8px; margin-bottom: 8px; }
.builder-head strong { font-size: 0.9rem; text-transform: capitalize; color: var(--accent); }

/* ── Pills & Badges ── */
.pill {
  font-size: 0.72rem;
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 600;
  letter-spacing: 0.02em;
}
.pill.success { background: var(--success-soft); color: var(--success); }
.pill.warning { background: var(--warning-soft); color: var(--warning); }
.pill.danger { background: var(--danger-soft); color: var(--danger); }

.badge {
  width: 22px; height: 22px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  font-weight: 700;
  background: var(--accent);
  color: #fff;
}

/* ── Evaluation Bars ── */
.eval-bar {
  height: 8px;
  border-radius: 999px;
  background: var(--border);
  overflow: hidden;
  margin: 3px 0 6px;
}
.eval-bar > span {
  display: block;
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(90deg, #ff6a5e, #f6c945, #0f9d58);
  transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Score circle ── */
.score-circle {
  width: 80px; height: 80px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem; font-weight: 800;
  background: conic-gradient(var(--accent) calc(var(--pct) * 1%), var(--border) 0);
  margin: 0 auto 8px;
  position: relative;
}
.score-circle::after {
  content: '';
  position: absolute;
  inset: 6px;
  border-radius: 50%;
  background: var(--card);
}
.score-circle span {
  position: relative;
  z-index: 1;
}

/* ── Favorites Star ── */
.fav-btn {
  background: none; border: none; cursor: pointer;
  font-size: 1.1rem; padding: 2px 4px;
  transition: transform 0.15s ease;
  color: var(--muted);
}
.fav-btn:hover { transform: scale(1.2); }
.fav-btn.active { color: #f6c945; }

/* ── Toast ── */
.toast {
  position: fixed;
  right: 16px;
  bottom: 16px;
  background: var(--text);
  color: var(--bg);
  padding: 10px 16px;
  border-radius: 12px;
  font-size: 0.88rem;
  font-weight: 500;
  opacity: 0;
  transform: translateY(12px);
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 100;
  box-shadow: var(--shadow-lg);
  max-width: 360px;
}
.toast.show { opacity: 1; transform: translateY(0); }

/* ── Empty State ── */
.empty-state {
  text-align: center;
  padding: 40px 20px;
  color: var(--muted);
}
.empty-state .icon { font-size: 2.5rem; margin-bottom: 8px; opacity: 0.5; }

/* ── Keyboard Shortcut Hints ── */
.kbd {
  display: inline-block;
  padding: 2px 6px;
  border-radius: 5px;
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--card), #000 4%);
  font-family: monospace;
  font-size: 0.72rem;
  color: var(--muted);
  line-height: 1.4;
}

/* ── Search highlight ── */
mark { background: var(--warning-soft); color: var(--text); padding: 1px 3px; border-radius: 3px; }

/* ── Animations ── */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.5; } }
@keyframes slideUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.fade-in { animation: fadeIn 0.3s ease forwards; }
.slide-up { animation: slideUp 0.4s ease forwards; }

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: var(--muted); }

/* ── Responsive ── */
@media (max-width: 1100px) {
  .main-grid { grid-template-columns: 1fr; }
  .right-column { min-height: 420px; }
}
@media (max-width: 860px) {
  .app-shell { grid-template-columns: 1fr; }
  .sidebar { position: sticky; top: 0; z-index: 10; height: auto; border-radius: 14px; }
  .grid-3, .grid-4 { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .app-shell { padding: 8px; gap: 8px; }
  .view { padding: 14px; }
}