:root {
  --ink: #1c1a17;
  --paper: #f3efe6;
  --clay: #c4a484;
  --celadon: #5f7f6a;
  --celadon-deep: #3d5a48;
  --glaze: #d9e2d6;
  --line: rgba(28, 26, 23, 0.12);
  --shadow: 0 18px 50px rgba(28, 26, 23, 0.12);
  --radius: 18px;
  --font-display: "Noto Serif SC", "Songti SC", serif;
  --font-body: "Source Sans 3", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  min-height: 100vh;
  color: var(--ink);
  font-family: var(--font-body);
  background:
    radial-gradient(1200px 700px at 12% -10%, #e7efe6 0%, transparent 55%),
    radial-gradient(900px 600px at 100% 0%, #efe2d1 0%, transparent 50%),
    linear-gradient(165deg, #f7f3eb 0%, #ebe4d8 48%, #e4ecE5 100%);
}

.grain {
  pointer-events: none;
  position: fixed;
  inset: 0;
  opacity: 0.08;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  z-index: 0;
}

.top, .stage, .variants, .foot { position: relative; z-index: 1; }

.top {
  padding: 28px 28px 8px;
  max-width: 1280px;
  margin: 0 auto;
  animation: rise 0.7s ease both;
}
.brand {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1.15;
}
.tag {
  margin: 8px 0 0;
  color: rgba(28, 26, 23, 0.62);
  font-size: 0.98rem;
}

.stage {
  max-width: 1360px;
  margin: 0 auto;
  padding: 18px 28px 10px;
  display: grid;
  grid-template-columns: minmax(280px, 0.95fr) minmax(360px, 1.05fr);
  gap: 22px;
  align-items: start;
  animation: rise 0.85s ease both;
}

.preview-panel {
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 4px);
  padding: 18px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(8px);
}
.view-toggle {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
}
.canvas-wrap {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  background: #111;
  aspect-ratio: 1 / 1;
}
.canvas-wrap.studio {
  background:
    radial-gradient(ellipse at 50% 78%, rgba(255,255,255,0.55) 0%, rgba(255,255,255,0) 42%),
    linear-gradient(180deg, #2a2926 0%, #151411 58%, #0d0c0b 100%);
}
#pattern {
  display: block;
  width: 100%;
  height: 100%;
}
.canvas-meta {
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 12px;
  display: flex;
  justify-content: space-between;
  gap: 10px;
  color: #f7f3eb;
  font-size: 0.82rem;
  text-shadow: 0 1px 8px rgba(0,0,0,0.45);
}
.preview-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 14px;
}
.ai-panel {
  margin-top: 12px;
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  background: #151310;
}
.ai-panel img {
  display: block;
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
}
.ai-status {
  margin: 0;
  padding: 8px 10px;
  font-size: 0.82rem;
  color: rgba(247,243,235,0.7);
  background: rgba(0,0,0,0.35);
}

.control-panel {
  display: grid;
  gap: 14px;
}
.card {
  background: rgba(255, 255, 255, 0.62);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 16px 14px;
  box-shadow: 0 8px 24px rgba(28, 26, 23, 0.05);
}
.card h2 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}
.card-note {
  margin: -6px 0 12px;
  color: rgba(28, 26, 23, 0.55);
  font-size: 0.86rem;
}
.vessel-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 6px;
  margin-bottom: 12px;
}
.vessel-cell {
  appearance: none;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 10px;
  padding: 6px 2px 5px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  transition: transform 0.15s ease, border-color 0.2s ease, background 0.2s ease;
}
.vessel-cell:hover { transform: translateY(-1px); }
.vessel-cell.active {
  background: var(--celadon-deep);
  border-color: var(--celadon-deep);
  color: #f4f7f4;
}
.vessel-cell canvas {
  width: 100%;
  height: 44px;
  display: block;
}
.vessel-cell span {
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.2;
  text-align: center;
}
@media (max-width: 920px) {
  .vessel-grid { grid-template-columns: repeat(5, minmax(0, 1fr)); }
}

.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  border-radius: 999px;
  padding: 8px 14px;
  font: 600 0.9rem var(--font-body);
  cursor: pointer;
  transition: transform 0.15s ease, background 0.2s ease, color 0.2s ease;
}
.chip:hover { transform: translateY(-1px); }
.chip.active {
  background: var(--celadon-deep);
  border-color: var(--celadon-deep);
  color: #f4f7f4;
}

.colors {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 10px;
}
.colors label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  font-size: 0.88rem;
  background: rgba(255,255,255,0.7);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 8px 10px;
}
.colors input[type="color"] {
  width: 42px;
  height: 28px;
  border: none;
  background: transparent;
  padding: 0;
  cursor: pointer;
}

.row {
  display: grid;
  grid-template-columns: 88px 1fr auto;
  gap: 10px;
  align-items: center;
  margin-top: 8px;
  font-size: 0.9rem;
}
.row input[type="range"] { width: 100%; accent-color: var(--celadon-deep); }
.row input[type="number"] {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 8px 10px;
  font: inherit;
  background: #fff;
}

.btn {
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  border-radius: 12px;
  padding: 10px 14px;
  font: 600 0.92rem var(--font-body);
  cursor: pointer;
  transition: transform 0.15s ease, background 0.2s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn.primary {
  background: var(--celadon-deep);
  border-color: var(--celadon-deep);
  color: #f4f7f4;
}
.btn.tiny { padding: 8px 10px; font-size: 0.82rem; }

.verdict-badge {
  display: inline-block;
  margin: 0 0 10px;
  padding: 6px 12px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.88rem;
  background: var(--glaze);
}
.verdict-badge.ok { background: #d7eadc; color: #244a32; }
.verdict-badge.warn { background: #f3e2c5; color: #6a4a18; }
.verdict-badge.hard { background: #e7d7ef; color: #4a2f5c; }
.verdict-badge.no { background: #f0d6d4; color: #6a2b27; }
#verdictList {
  margin: 0;
  padding-left: 18px;
  color: rgba(28, 26, 23, 0.78);
  line-height: 1.55;
  font-size: 0.9rem;
}

textarea {
  width: 100%;
  resize: vertical;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px;
  font: 0.88rem/1.5 var(--font-body);
  background: #fff;
  color: var(--ink);
}

.variants {
  max-width: 1280px;
  margin: 8px auto 28px;
  padding: 0 28px;
  animation: rise 1s ease both;
}
.variants-head h2 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 1.35rem;
}
.variants-head p {
  margin: 0 0 14px;
  color: rgba(28, 26, 23, 0.62);
}
.variants-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 14px;
}
.variant {
  background: rgba(255,255,255,0.7);
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 8px 20px rgba(28,26,23,0.06);
}
.variant img { width: 100%; aspect-ratio: 1; object-fit: cover; display: block; }
.variant .meta { padding: 10px 12px 12px; font-size: 0.82rem; }
.variant select {
  width: 100%;
  margin-top: 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 6px 8px;
  font: inherit;
  background: #fff;
}
.variant .remove {
  margin-top: 8px;
  width: 100%;
  border: none;
  background: transparent;
  color: rgba(28,26,23,0.55);
  cursor: pointer;
  font: 600 0.8rem var(--font-body);
}
.empty-hint {
  grid-column: 1 / -1;
  padding: 28px;
  text-align: center;
  color: rgba(28,26,23,0.5);
  border: 1px dashed var(--line);
  border-radius: 16px;
  background: rgba(255,255,255,0.35);
}

.foot {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 28px 36px;
  color: rgba(28, 26, 23, 0.5);
  font-size: 0.82rem;
}

@keyframes rise {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 920px) {
  .stage { grid-template-columns: 1fr; }
  .top, .stage, .variants, .foot { padding-left: 16px; padding-right: 16px; }
}