/* ═══════════════════════════════════════════════════════════
   TumBAS — Tech-modern e-commerce design system (vanilla)
   ═══════════════════════════════════════════════════════════ */

:root {
  --bg: #fafafa;
  --bg-elev: #ffffff;
  --bg-sunken: #f3f3f1;
  --line: #e5e5e3;
  --line-strong: #d4d4d1;
  --text: #0a0a0a;
  --text-muted: #6b6b68;
  --text-faint: #9a9a96;
  --accent: #0a0a0a;
  --accent-fg: #ffffff;
  --positive: #14794a;
  --warn: #b45309;
  --danger: #b91c1c;
  --tag-bg: #ececea;
  --shadow-md: 0 1px 3px rgba(0,0,0,.06), 0 8px 24px rgba(0,0,0,.04);
}

[data-theme="dark"] {
  --bg: #0b0b0c;
  --bg-elev: #161618;
  --bg-sunken: #0a0a0b;
  --line: #232327;
  --line-strong: #2e2e33;
  --text: #f5f5f3;
  --text-muted: #9a9a96;
  --text-faint: #6b6b68;
  --accent: #f5f5f3;
  --accent-fg: #0a0a0a;
  --positive: #4ade80;
  --warn: #fbbf24;
  --danger: #f87171;
  --tag-bg: #232327;
  --shadow-md: 0 1px 3px rgba(0,0,0,.5), 0 8px 24px rgba(0,0,0,.3);
}

* { box-sizing: border-box; }

html, body {
  margin: 0; padding: 0;
  font-family: 'Inter Tight', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  background: #f0eee9;
  -webkit-font-smoothing: antialiased;
}
[data-app-theme="dark"] body { background: #0a0a0b; }

.TumBAS {
  font-family: 'Inter Tight', -apple-system, system-ui, sans-serif;
  font-feature-settings: 'ss01', 'cv11';
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.5;
  letter-spacing: -0.01em;
  height: 100%;
  width: 100%;
  overflow-y: auto;
  overflow-x: hidden;
}

.TumBAS *::-webkit-scrollbar { width: 0; height: 0; }
.TumBAS * { scrollbar-width: none; }

.mono { font-family: 'JetBrains Mono', ui-monospace, monospace; font-feature-settings: 'tnum'; }

button {
  font: inherit; color: inherit; background: none; border: none; padding: 0; margin: 0;
  cursor: pointer; text-align: left;
}
input, textarea, select {
  font: inherit; color: inherit; background: transparent; border: none; outline: none; padding: 0; margin: 0; width: 100%;
}
a { color: inherit; text-decoration: none; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 10px 16px; border-radius: 4px;
  font-size: 13px; font-weight: 500; white-space: nowrap;
  transition: opacity .12s, background .12s, border-color .12s;
}
.btn-primary { background: var(--accent); color: var(--accent-fg); }
.btn-primary:hover { opacity: .88; }
.btn-secondary { border: 1px solid var(--line-strong); background: var(--bg-elev); color: var(--text); }
.btn-secondary:hover { background: var(--bg-sunken); }
.btn-ghost:hover { background: var(--bg-sunken); }
.btn-block { width: 100%; }
.btn-lg { padding: 14px 20px; font-size: 14px; }
.btn-sm { padding: 6px 10px; font-size: 12px; }

.card { background: var(--bg-elev); border: 1px solid var(--line); border-radius: 6px; }

.field {
  display: block; border: 1px solid var(--line-strong); background: var(--bg-elev);
  border-radius: 4px; padding: 10px 12px; font-size: 13px;
  transition: border-color .12s; width: 100%;
}
.field:focus-within { border-color: var(--text); }
.field-label {
  display: block; font-size: 11px; text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--text-muted); margin-bottom: 6px; font-weight: 500;
}

.chip {
  display: inline-flex; align-items: center; gap: 4px; padding: 4px 8px;
  background: var(--tag-bg); border-radius: 3px; font-size: 11px; font-weight: 500;
}

.hr { height: 1px; background: var(--line); border: none; margin: 0; }

.imgph {
  background: linear-gradient(135deg, #f0f0ed 0%, #e8e8e4 50%, #f0f0ed 100%);
  position: relative; overflow: hidden;
}
[data-theme="dark"] .imgph { background: linear-gradient(135deg, #1a1a1d 0%, #1f1f22 50%, #1a1a1d 100%); }
.imgph::before {
  content: ''; position: absolute; inset: 0;
  background-image: repeating-linear-gradient(-45deg, transparent 0, transparent 12px, rgba(0,0,0,0.03) 12px, rgba(0,0,0,0.03) 13px);
}
[data-theme="dark"] .imgph::before {
  background-image: repeating-linear-gradient(-45deg, transparent 0, transparent 12px, rgba(255,255,255,0.04) 12px, rgba(255,255,255,0.04) 13px);
}

.step-dot {
  width: 22px; height: 22px; border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 11px; font-weight: 600; font-family: 'JetBrains Mono', monospace;
}
.step-dot.active, .step-dot.done { background: var(--accent); color: var(--accent-fg); }
.step-dot.pending { border: 1px solid var(--line-strong); color: var(--text-muted); }

.badge {
  display: inline-block; padding: 2px 6px; background: var(--text); color: var(--bg-elev);
  font-size: 9px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; border-radius: 2px;
}

.radio, .check {
  width: 16px; height: 16px; border: 1px solid var(--line-strong);
  display: inline-flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.radio { border-radius: 50%; }
.check { border-radius: 3px; }
.radio.on::after { content: ''; width: 8px; height: 8px; background: var(--text); border-radius: 50%; }
.check.on { background: var(--text); border-color: var(--text); }
.check.on::after {
  content: ''; width: 8px; height: 4px;
  border-left: 1.5px solid var(--bg-elev); border-bottom: 1.5px solid var(--bg-elev);
  transform: rotate(-45deg) translate(1px,-1px);
}

.swatch {
  width: 18px; height: 18px; border-radius: 50%;
  border: 1px solid var(--line); cursor: pointer; position: relative;
}
.swatch.on::after {
  content: ''; position: absolute; inset: -3px;
  border: 1px solid var(--text); border-radius: 50%;
}

.pcard {
  background: var(--bg-elev); border: 1px solid var(--line); border-radius: 6px;
  display: flex; flex-direction: column; cursor: pointer; overflow: hidden;
  transition: border-color .15s;
}
.pcard:hover { border-color: var(--text); }

.tab {
  padding: 0 0 12px; font-size: 13px; color: var(--text-muted);
  border-bottom: 2px solid transparent; margin-bottom: -1px;
}
.tab.active { color: var(--text); font-weight: 600; border-bottom-color: var(--text); }

.size-btn {
  padding: 4px 10px; font-size: 11px; border: 1px solid var(--line-strong);
  background: transparent; color: var(--text-muted); border-radius: 3px;
}
.size-btn.on { background: var(--text); color: var(--bg-elev); border-color: var(--text); }

@keyframes slideUp { from { transform: translateY(20px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }

input[type=range] { accent-color: var(--text); }

.qty-box { display: inline-flex; border: 1px solid var(--line-strong); border-radius: 4px; }
.qty-box button { padding: 8px 12px; }
.qty-box .v { padding: 8px 14px; border-left: 1px solid var(--line); border-right: 1px solid var(--line); font-size: 13px; min-width: 40px; text-align: center; font-family: 'JetBrains Mono', monospace; }

.frame-shell {
  background: var(--bg); border-radius: 8px; overflow: hidden; position: relative;
  box-shadow: 0 4px 24px rgba(0,0,0,0.08), 0 1px 3px rgba(0,0,0,0.06);
  border: 1px solid #d4d4d1;
}
.frame-shell.mobile { border-radius: 36px; border: 8px solid #1a1a1c; }
.frame-shell.mobile .notch {
  position: absolute; top: 0; left: 50%; transform: translateX(-50%);
  width: 110px; height: 26px; background: #1a1a1c; border-radius: 0 0 14px 14px; z-index: 100;
}
.frame-shell.mobile .TumBAS { padding-top: 30px; }

.tweaks-panel {
  position: fixed; bottom: 20px; right: 20px;
  background: #161618; color: #f5f5f3; border-radius: 8px;
  padding: 16px; min-width: 220px; z-index: 200;
  font-family: 'Inter Tight', sans-serif; font-size: 12px;
  box-shadow: 0 10px 40px rgba(0,0,0,0.3);
}
.tweaks-panel h3 { margin: 0 0 10px; font-size: 12px; font-weight: 600; letter-spacing: 0.05em; text-transform: uppercase; opacity: 0.7; }
.tweaks-panel .seg { display: flex; gap: 4px; padding: 3px; background: #232327; border-radius: 5px; margin-bottom: 12px; }
.tweaks-panel .seg button { flex: 1; padding: 6px 10px; border-radius: 3px; font-size: 12px; font-weight: 500; color: #9a9a96; }
.tweaks-panel .seg button.on { background: #f5f5f3; color: #0a0a0a; }
.tweaks-panel .act { display: block; width: 100%; padding: 8px 10px; background: #232327; border-radius: 4px; font-size: 12px; margin-top: 6px; color: #f5f5f3; }
.tweaks-panel .act:hover { background: #2e2e33; }