:root {
  --bg: oklch(0.16 0.02 265);
  --surface: oklch(0.22 0.025 265);
  --text: oklch(0.94 0.01 95);
  --muted: oklch(0.72 0.02 265);
  --accent: oklch(0.68 0.16 25);
  --accent2: oklch(0.55 0.12 250);
  --radius: 12px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { box-sizing: border-box; }
html { color-scheme: dark; }
body {
  margin: 0;
  font-family: "Source Sans 3", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

#app { max-width: 1400px; margin: 0 auto; padding: 1.5rem; }

.header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-end;
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.header h1 {
  font-family: "Fraunces", Georgia, serif;
  font-size: 1.75rem;
  font-weight: 600;
  margin: 0;
  letter-spacing: -0.02em;
}
.sub { margin: 0.25rem 0 0; color: var(--muted); font-size: 0.85rem; }

.panel {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 1.25rem;
  margin-bottom: 1.25rem;
  border: 1px solid oklch(0.32 0.03 265);
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
}
label span { display: block; font-size: 0.75rem; color: var(--muted); margin-bottom: 0.35rem; }
input, select, textarea {
  width: 100%;
  padding: 0.55rem 0.65rem;
  border-radius: 8px;
  border: 1px solid oklch(0.38 0.04 265);
  background: oklch(0.18 0.02 265);
  color: var(--text);
  font-size: 0.95rem;
}
label.full { display: block; margin-top: 1rem; }
.opts { display: flex; flex-wrap: wrap; gap: 1rem; align-items: center; margin-top: 1rem; font-size: 0.9rem; }
.opts input[type="number"] { width: 4rem; margin-left: 0.35rem; }
.actions { display: flex; gap: 0.75rem; margin-top: 1rem; }

.btn {
  padding: 0.6rem 1.1rem;
  border-radius: 8px;
  border: none;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.12s var(--ease), opacity 0.12s;
  will-change: transform;
}
.btn:active { transform: scale(0.98); }
.btn.primary { background: var(--accent); color: oklch(0.12 0.02 25); }
.btn.ghost { background: transparent; color: var(--text); border: 1px solid oklch(0.4 0.04 265); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }

.token-wrap input { min-width: 200px; }
.header-actions { display: flex; gap: 0.5rem; align-items: flex-end; }

.progress {
  margin-top: 1rem;
  height: 4px;
  background: oklch(0.28 0.03 265);
  border-radius: 2px;
  overflow: hidden;
  position: relative;
}
.progress.hidden { display: none; }
.progress-bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--accent2), var(--accent));
  transition: width 0.05s linear;
  will-change: width;
}
#progress-label { font-size: 0.8rem; color: var(--muted); display: block; margin-top: 0.35rem; }
.status { font-size: 0.85rem; color: var(--muted); margin-top: 0.5rem; min-height: 1.2em; }

.results h2, .events-panel h2 {
  font-family: "Fraunces", Georgia, serif;
  font-size: 1.25rem;
  margin: 0 0 1rem;
}
.results.hidden { display: none; }

.studio-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  align-items: start;
}
@media (min-width: 960px) {
  .studio-split { grid-template-columns: 1fr minmax(320px, 42%); }
}

.cards {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.preview-pane {
  position: sticky;
  top: 1rem;
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid oklch(0.34 0.035 265);
  padding: 1rem;
  min-height: 280px;
}
.preview-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}
.preview-head h3 {
  margin: 0;
  font-family: "Fraunces", Georgia, serif;
  font-size: 1rem;
}
.preview-status { font-size: 0.8rem; color: var(--muted); margin: 0 0 0.75rem; min-height: 2.4em; }
.preview-frame {
  width: 100%;
  height: min(70vh, 520px);
  border: 1px solid oklch(0.38 0.04 265);
  border-radius: 8px;
  background: #fff;
}
.preview-frame.hidden, .btn.small.hidden { display: none; }
.btn.small { padding: 0.35rem 0.65rem; font-size: 0.75rem; }

.concept-card.selected {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px color-mix(in oklch, var(--accent) 40%, transparent);
}
.card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

.concept-card {
  display: grid;
  grid-template-columns: minmax(140px, 200px) 1fr;
  gap: 1rem;
  background: var(--surface);
  border-radius: var(--radius);
  padding: 1rem;
  border: 1px solid oklch(0.34 0.035 265);
  opacity: 0;
  transform: translateY(12px) translateZ(0);
  will-change: transform, opacity;
}
.concept-card.visible {
  opacity: 1;
  transform: translateY(0) translateZ(0);
  transition: opacity 0.35s var(--ease), transform 0.35s var(--ease);
}

.snapshot-wrap {
  position: relative;
  aspect-ratio: 16/10;
  border-radius: 8px;
  overflow: hidden;
  background: oklch(0.14 0.02 265);
  cursor: pointer;
  contain: layout paint;
}
.snapshot-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transform: translateZ(0);
  transition: transform 0.2s var(--ease);
}
.snapshot-wrap:hover img { transform: scale(1.03) translateZ(0); }
.snapshot-wrap.sent::after {
  content: "✓ sent";
  position: absolute;
  inset: auto 0 0 0;
  padding: 0.35rem;
  background: oklch(0.45 0.12 145 / 0.85);
  font-size: 0.7rem;
  text-align: center;
  font-weight: 700;
}
.snapshot-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--muted);
  font-size: 0.8rem;
  text-align: center;
  padding: 0.5rem;
}

.card-body h3 { margin: 0 0 0.35rem; font-size: 1.05rem; }
.tagline { color: var(--muted); font-size: 0.9rem; margin: 0 0 0.75rem; }
.meta { display: flex; flex-wrap: wrap; gap: 0.35rem; margin-bottom: 0.75rem; }
.chip {
  font-size: 0.7rem;
  padding: 0.2rem 0.5rem;
  border-radius: 999px;
  background: oklch(0.3 0.05 265);
  color: var(--muted);
}
.card-body p { margin: 0.35rem 0; font-size: 0.88rem; line-height: 1.45; }
.palette { display: flex; gap: 4px; margin-top: 0.5rem; }
.swatch { width: 20px; height: 20px; border-radius: 4px; border: 1px solid oklch(0.5 0.05 265); }

.hint { font-size: 0.8rem; color: var(--muted); margin: 0 0 0.75rem; }
.events { list-style: none; padding: 0; margin: 0; max-height: 200px; overflow-y: auto; }
.events li {
  font-size: 0.8rem;
  padding: 0.5rem 0;
  border-bottom: 1px solid oklch(0.3 0.03 265);
  font-family ui-monospace, monospace;
}
.badge {
  font-size: 0.75rem;
  background: var(--accent2);
  color: var(--text);
  padding: 0.1rem 0.45rem;
  border-radius: 999px;
  vertical-align: middle;
}

@media (max-width: 640px) {
  .concept-card { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  .concept-card, .snapshot-wrap img, .btn { transition: none; }
}