:root {
  color-scheme: dark;
  --bg: #10150c;
  --panel: rgba(28, 34, 21, 0.84);
  --panel-strong: rgba(35, 42, 26, 0.94);
  --line: rgba(230, 236, 189, 0.17);
  --line-strong: rgba(255, 239, 189, 0.36);
  --text: #fff8df;
  --muted: #c3bda2;
  --green: #b9ee8c;
  --gold: #ffd37a;
  --blue: #99ddff;
  --danger: #ff9a8a;
  --shadow: rgba(0, 0, 0, 0.38);
}

* { box-sizing: border-box; }
html, body { min-height: 100%; margin: 0; }
body {
  color: var(--text);
  background:
    radial-gradient(circle at 16% 10%, rgba(185, 238, 140, 0.20), transparent 30rem),
    radial-gradient(circle at 82% 2%, rgba(255, 211, 122, 0.16), transparent 28rem),
    linear-gradient(150deg, #10150c 0%, #1a2111 50%, #0d1512 100%);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(rgba(255,255,255,0.026) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.026) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,0.72), transparent 84%);
}

.material-shell {
  position: relative;
  width: min(1560px, calc(100vw - 28px));
  margin: 0 auto;
  padding: 24px 0 58px;
}

.hero-card, .status-grid article, .material-list-card, .asset-list-card, .editor-card, .material-card, .asset-card {
  border: 1px solid var(--line);
  background: linear-gradient(145deg, rgba(35, 42, 26, 0.88), rgba(12, 18, 14, 0.74));
  box-shadow: 0 28px 88px var(--shadow), inset 0 1px 0 rgba(255,255,255,0.055);
  backdrop-filter: blur(18px);
}
.hero-card { overflow: hidden; border-radius: 30px; }
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 22px 0;
}
.brand {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: var(--text);
  font-size: 0.84rem;
  font-weight: 900;
  letter-spacing: 0.14em;
  text-decoration: none;
  text-transform: uppercase;
}
.route-pill {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 12px;
  color: var(--gold);
  background: rgba(255, 255, 255, 0.055);
  font-size: 0.78rem;
  font-weight: 800;
}
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 390px;
  gap: 22px;
  padding: 22px;
}
.hero-copy {
  min-height: 280px;
  padding: 34px;
  border-radius: 24px;
  background:
    linear-gradient(135deg, rgba(185, 238, 140, 0.18), transparent 42%),
    radial-gradient(circle at 100% 0%, rgba(153, 221, 255, 0.12), transparent 21rem),
    rgba(255, 255, 255, 0.03);
}
.eyebrow {
  margin: 0 0 12px;
  color: var(--green);
  font-size: 0.73rem;
  font-weight: 900;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}
h1, h2, h3, p { margin-top: 0; }
h1 {
  max-width: 820px;
  margin-bottom: 16px;
  font-size: clamp(2.3rem, 5.8vw, 5.2rem);
  line-height: 0.94;
  letter-spacing: -0.065em;
}
h2 { margin-bottom: 0; font-size: clamp(1.25rem, 2vw, 1.9rem); letter-spacing: -0.035em; }
h3 { margin: 0; font-size: 1rem; overflow-wrap: anywhere; }
p { color: var(--muted); line-height: 1.68; }

.control-panel, .editor-form {
  display: grid;
  gap: 14px;
}
.control-panel {
  align-content: start;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: rgba(255,255,255,0.04);
}
label { display: grid; gap: 7px; }
label span, .material-meta dt, figcaption {
  color: var(--muted);
  font-size: 0.74rem;
  font-weight: 900;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}
input, select, textarea, button {
  border: 1px solid var(--line-strong);
  color: var(--text);
  background: rgba(255,255,255,0.075);
  font: inherit;
}
input, select {
  min-height: 44px;
  border-radius: 14px;
  padding: 0 12px;
}
input[type="color"] { padding: 3px; }
input[type="range"] { padding: 0; }
textarea {
  width: 100%;
  min-height: 136px;
  resize: vertical;
  border-radius: 16px;
  padding: 12px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.82rem;
}
button {
  min-height: 44px;
  border-radius: 999px;
  padding: 0 16px;
  cursor: pointer;
  font-weight: 900;
}
button:hover, .material-card:hover { background: rgba(255,255,255,0.105); }

.status-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
  margin-top: 18px;
}
.status-grid article {
  min-width: 0;
  border-radius: 20px;
  padding: 17px;
}
.status-grid span { display: block; color: var(--muted); font-size: 0.72rem; font-weight: 900; letter-spacing: 0.12em; text-transform: uppercase; }
.status-grid strong { display: block; margin-top: 7px; font-size: 1.25rem; overflow-wrap: anywhere; }

.workspace {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 420px;
  gap: 18px;
  margin-top: 18px;
  align-items: start;
}
.material-list-card, .editor-card, .material-grid, .asset-grid {
  min-width: 0;
}
.material-list-card, .asset-list-card, .editor-card { border-radius: 26px; padding: 20px; }
.asset-list-card { margin-top: 18px; }
.section-head {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: end;
  margin-bottom: 18px;
}
.section-head p { max-width: 560px; margin-bottom: 0; font-size: 0.92rem; }
.material-grid, .asset-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 14px;
}
.asset-grid { grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); }
.material-card, .asset-card {
  border-radius: 20px;
  padding: 14px;
}
.material-card {
  cursor: pointer;
  transition: transform 150ms ease, border-color 150ms ease, background 150ms ease;
}
.material-card:hover { transform: translateY(-2px); }
.material-card.is-selected { border-color: var(--gold); box-shadow: 0 0 0 1px rgba(255, 211, 122, 0.35), 0 24px 70px var(--shadow); }
.material-card.is-edited .badge { color: #10150c; background: var(--gold); }
.material-card header, .asset-card header {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: start;
  margin-bottom: 12px;
}
.material-card header > div, .asset-card header > div { min-width: 0; }
.layer-index, .asset-category { color: var(--green); font-size: 0.76rem; font-weight: 900; }
.badge {
  flex: 0 1 auto;
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 5px 8px;
  color: var(--muted);
  font-size: 0.68rem;
  font-weight: 900;
  overflow-wrap: anywhere;
  text-align: right;
  text-transform: uppercase;
}
.tile-row {
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 10px;
  align-items: stretch;
}
canvas {
  display: block;
  width: 100%;
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 14px;
  background:
    linear-gradient(45deg, rgba(255,255,255,0.08) 25%, transparent 25%),
    linear-gradient(-45deg, rgba(255,255,255,0.08) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, rgba(255,255,255,0.08) 75%),
    linear-gradient(-45deg, transparent 75%, rgba(255,255,255,0.08) 75%),
    #11180f;
  background-size: 18px 18px;
  background-position: 0 0, 0 9px, 9px -9px, -9px 0;
  image-rendering: pixelated;
}
.tile-canvas { aspect-ratio: 1; }
.repeat-canvas { aspect-ratio: 1; }
.model-canvas {
  width: 100%;
  aspect-ratio: 4 / 3;
  background:
    radial-gradient(circle at 50% 38%, rgba(153,221,255,0.14), transparent 38%),
    linear-gradient(180deg, rgba(110,180,220,0.20), rgba(40,55,32,0.24)),
    #11180f;
  image-rendering: auto;
}
.asset-description {
  min-height: 3.1em;
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.48;
}
.material-meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px 10px;
  margin: 12px 0 0;
}
.material-meta div { min-width: 0; }
.material-meta dd {
  margin: 3px 0 0;
  color: var(--text);
  overflow-wrap: anywhere;
  font-size: 0.86rem;
}

.editor-card { position: sticky; top: 14px; }
.editor-sticky { display: grid; gap: 16px; }
.editor-head p { margin-bottom: 0; }
.preview-pair {
  display: grid;
  grid-template-columns: 112px 1fr;
  gap: 12px;
}
figure { margin: 0; }
figcaption { margin-top: 6px; text-align: center; }
.button-row { display: flex; flex-wrap: wrap; gap: 10px; }
.export-panel {
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 12px;
  background: rgba(255,255,255,0.035);
}
summary {
  min-height: 44px;
  padding: 10px 2px;
  cursor: pointer;
  color: var(--gold);
  font-weight: 900;
}
.export-panel textarea { margin-top: 12px; }
.status-text { min-height: 1.4em; margin: 0; color: var(--muted); font-size: 0.9rem; }

@media (max-width: 1080px) {
  .hero-grid, .workspace { grid-template-columns: minmax(0, 1fr); }
  .editor-card { position: static; }
  .status-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 680px) {
  .material-shell { width: min(100vw - 18px, 1560px); padding-top: 12px; }
  .hero-copy { min-height: 0; padding: 22px; }
  .topbar { align-items: flex-start; flex-direction: column; }
  .status-grid { grid-template-columns: 1fr; }
  .section-head { align-items: start; flex-direction: column; }
  .material-grid { grid-template-columns: 1fr; }
  .preview-pair { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 380px) {
  .material-list-card, .asset-list-card, .editor-card { padding: 14px; }
  .material-grid, .asset-grid { grid-template-columns: minmax(0, 1fr); }
  .tile-row { grid-template-columns: minmax(76px, 0.42fr) minmax(0, 1fr); }
  .preview-pair { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}