/* ── reset / tokens ────────────────────────────────────────── */
:root {
  --bg-main: #07192b;
  --bg-card: #0b2438;
  --border: #285a74;
  --text: #fff2d7;
  --muted: #a7c6d8;
  --nav-h: 52px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Segoe UI", "Trebuchet MS", sans-serif;
  padding-top: var(--nav-h);
  color: var(--text);
  background:
    radial-gradient(ellipse at 20% 16%, rgba(255, 186, 92, 0.34) 0%, rgba(255, 186, 92, 0) 44%),
    radial-gradient(ellipse at 80% 12%, rgba(255, 107, 61, 0.24) 0%, rgba(255, 107, 61, 0) 42%),
    linear-gradient(180deg, #1d4568 0%, #0e2f4b 38%, #0a2236 66%, #081d2f 100%);
}

.topnav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  background: rgba(5, 22, 37, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid #285a74;
}

.nav-brand {
  font-size: 1.15rem;
  font-weight: 700;
  color: #ffd58a;
  text-decoration: none;
  letter-spacing: 1px;
}

.nav-note {
  font-size: 0.82rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #9bc3d9;
}

.hero {
  text-align: center;
  padding: 52px 24px 40px;
}

.hero-title {
  margin: 0;
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  font-size: clamp(1.55rem, 4.2vw, 3.35rem);
  font-weight: 900;
  letter-spacing: 0.045em;
  background: linear-gradient(130deg, #ffe0a6 0%, #ffb347 45%, #ff6b3d 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: 0 0 36px rgba(255, 177, 84, 0.42), 0 0 68px rgba(255, 107, 61, 0.3);
  filter: drop-shadow(0 0 18px rgba(255, 147, 56, 0.32));
  transform: perspective(1000px) rotateX(0deg);
}

.hero-note {
  width: min(760px, calc(100% - 32px));
  margin: 14px auto 0;
  color: var(--muted);
  font-size: 0.98rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-pills {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin-top: 20px;
}

.pill {
  background: rgba(168, 216, 255, 0.07);
  border: 1px solid #1a2e60;
  border-radius: 999px;
  padding: 4px 14px;
  font-size: 0.82rem;
  color: var(--muted);
}

.theme-strip {
  max-width: 1248px;
  margin: 0 auto;
  padding: 0 24px 32px;
}

.theme-strip-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  gap: 20px;
  align-items: stretch;
}

.theme-strip-inner > .theme-grid:only-child {
  grid-column: 1 / -1;
  width: 100%;
  max-width: 760px;
  margin: 0 auto;
}

.theme-strip-copy,
.theme-card {
  background: color-mix(in oklab, var(--bg-card) 90%, black 10%);
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.32);
}

.theme-strip-copy {
  padding: 22px;
}

.theme-kicker,
.theme-card-kicker {
  display: block;
  margin: 0 0 8px;
  font-size: 0.76rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #8ea8dd;
}

.theme-strip-copy h2 {
  margin: 0 0 10px;
  font-size: clamp(1.35rem, 2.5vw, 2rem);
  color: #eef6ff;
}

.theme-strip-copy p:last-child {
  margin: 0;
  color: var(--muted);
  line-height: 1.55;
}

.theme-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  perspective: 1200px;
}

.theme-card {
  display: grid;
  gap: 8px;
  padding: 18px;
  color: inherit;
  text-decoration: none;
  position: relative;
  min-height: 142px;
  overflow: hidden;
  transform-origin: center;
  transform-style: preserve-3d;
  transition: transform 280ms cubic-bezier(0.22, 1, 0.36, 1), border-color 180ms ease, box-shadow 220ms ease;
}

.theme-card::before,
.theme-card::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  transition: opacity 220ms ease, transform 280ms cubic-bezier(0.22, 1, 0.36, 1);
}

.theme-card::before {
  background: linear-gradient(135deg, rgba(168, 216, 255, 0.12), transparent 38%, rgba(255, 102, 204, 0.09) 100%);
  opacity: 0.6;
}

.theme-card::after {
  inset: auto 18px 14px 18px;
  height: 1px;
  background: linear-gradient(90deg, rgba(168, 216, 255, 0.14), rgba(255, 255, 255, 0.45), rgba(196, 127, 255, 0.14));
  opacity: 0.65;
  transform: scaleX(0.55);
}

.theme-card strong {
  font-size: 1.15rem;
  color: #f5f9ff;
  transform: translateZ(22px);
}

.theme-card span:last-child {
  color: var(--muted);
  line-height: 1.45;
  transform: translateZ(16px);
}

.theme-card-kicker {
  transform: translateZ(28px);
}

.theme-card:hover {
  transform: rotateY(-10deg) translateY(-4px);
  border-color: #6aa8ff;
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.38);
}

.theme-card:hover::after,
.theme-card:focus-visible::after {
  opacity: 1;
  transform: scaleX(1);
}

.theme-card:nth-child(2):hover {
  transform: rotateY(10deg) translateY(-4px);
}

.theme-card:focus-visible {
  outline: none;
  transform: rotateY(-8deg) translateY(-4px);
  border-color: #c47fff;
  box-shadow: 0 0 0 1px rgba(196, 127, 255, 0.42) inset, 0 18px 42px rgba(0, 0, 0, 0.42);
}

.theme-card.current {
  border-color: #a8d8ff;
  box-shadow: 0 0 0 1px rgba(168, 216, 255, 0.24) inset, 0 18px 48px rgba(0, 0, 0, 0.38);
  transform: rotateX(4deg);
}

.theme-card.current::before {
  opacity: 0.82;
}

.theme-card.current::after {
  opacity: 1;
  transform: scaleX(1);
}

/* Theme-card color system: each theme gets a distinct accent and a faded themed backdrop. */
.theme-card {
  --theme-accent: #57d4ff;
  --theme-accent-rgb: 87, 212, 255;
  --theme-tint-a: rgba(87, 212, 255, 0.16);
  --theme-tint-b: rgba(255, 91, 212, 0.1);
  border-color: rgba(var(--theme-accent-rgb), 0.28);
  background:
    radial-gradient(circle at 16% 18%, var(--theme-tint-a) 0%, transparent 58%),
    radial-gradient(circle at 84% 84%, var(--theme-tint-b) 0%, transparent 56%),
    linear-gradient(160deg, rgba(10, 10, 18, 0.96) 0%, rgba(12, 8, 16, 0.9) 100%);
}

.theme-card::before {
  background: linear-gradient(135deg, rgba(var(--theme-accent-rgb), 0.22), transparent 40%, rgba(255, 255, 255, 0.05) 100%);
}

.theme-card::after {
  background: linear-gradient(90deg, rgba(var(--theme-accent-rgb), 0.18), rgba(255, 255, 255, 0.5), rgba(var(--theme-accent-rgb), 0.14));
}

.theme-card:hover {
  border-color: var(--theme-accent);
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.42), 0 0 0 1px rgba(var(--theme-accent-rgb), 0.22) inset;
}

.theme-card:focus-visible {
  border-color: var(--theme-accent);
  box-shadow: 0 0 0 1px rgba(var(--theme-accent-rgb), 0.34) inset, 0 18px 42px rgba(0, 0, 0, 0.46);
}

.theme-card.current {
  border-color: var(--theme-accent);
  box-shadow: 0 0 0 1px rgba(var(--theme-accent-rgb), 0.3) inset, 0 18px 48px rgba(0, 0, 0, 0.38);
}

.theme-card:nth-child(1) {
  --theme-accent: #8dbbff;
  --theme-accent-rgb: 141, 187, 255;
  --theme-tint-a: rgba(141, 187, 255, 0.18);
  --theme-tint-b: rgba(196, 127, 255, 0.14);
}

.theme-card:nth-child(2) {
  --theme-accent: #57d4ff;
  --theme-accent-rgb: 87, 212, 255;
  --theme-tint-a: rgba(87, 212, 255, 0.18);
  --theme-tint-b: rgba(255, 42, 195, 0.14);
}

.theme-card:nth-child(3) {
  --theme-accent: #86ff98;
  --theme-accent-rgb: 134, 255, 152;
  --theme-tint-a: rgba(134, 255, 152, 0.2);
  --theme-tint-b: rgba(242, 211, 122, 0.14);
}

.theme-card:nth-child(4) {
  --theme-accent: #ffb169;
  --theme-accent-rgb: 255, 177, 105;
  --theme-tint-a: rgba(255, 177, 105, 0.19);
  --theme-tint-b: rgba(79, 216, 198, 0.15);
}

.generator-section {
  max-width: 1248px;
  margin: 0 auto;
  padding: 0 24px 40px;
}

.section-header {
  margin-bottom: 16px;
}

.section-header h2 {
  margin: 0 0 4px;
  font-size: 1.1rem;
  color: var(--text);
}

.section-header p {
  margin: 0;
  color: var(--muted);
  font-size: 0.88rem;
}

.wrap {
  max-width: 1248px;
  margin: 0 auto;
  padding: 24px;
  display: grid;
  grid-template-columns: 388px 1fr;
  gap: 24px;
}

.panel,
.preview {
  background: color-mix(in oklab, var(--bg-card) 88%, black 12%);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.6);
}

.panel { padding: 18px; }

h1 {
  margin: 0;
  font-size: 1.35rem;
  letter-spacing: 0.5px;
}

.sub {
  margin-top: 8px;
  color: var(--muted);
  line-height: 1.4;
  font-size: 0.88rem;
}

.grid {
  margin-top: 16px;
  display: grid;
  gap: 12px;
  grid-template-columns: 1fr 1fr;
}

.grid label:first-child,
.grid label:nth-child(2),
.grid label:nth-child(3) {
  grid-column: span 2;
}

.chaos-box {
  margin-top: 14px;
  border: 1px solid #1a2050;
  border-radius: 10px;
  padding: 10px 12px 12px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 6px;
}

.chaos-box legend {
  color: var(--muted);
  font-size: 0.82rem;
  padding: 0 4px;
  letter-spacing: 0.3px;
}

.cb-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.84rem;
  color: var(--text);
  cursor: pointer;
}

.variant-range-control {
  grid-column: span 2;
  border: 1px solid #1a2050;
  border-radius: 9px;
  padding: 8px 10px;
  background: color-mix(in oklab, var(--bg-card) 86%, black 14%);
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  column-gap: 10px;
  row-gap: 6px;
  color: var(--muted);
}

.variant-range-control span {
  font-size: 0.9rem;
  min-width: 0;
}

.variant-range-control strong {
  color: var(--text);
  font-size: 0.95rem;
  letter-spacing: 0.03em;
  min-width: 2ch;
  text-align: right;
  justify-self: end;
}

.variant-range-control input[type="range"] {
  grid-column: span 2;
  padding: 0;
  border: none;
  background: none;
  width: 100%;
}

.cb-label input[type="checkbox"] {
  accent-color: #a8d8ff;
  width: 14px;
  height: 14px;
  padding: 0;
  border: none;
  background: none;
  flex-shrink: 0;
}

.variant-count-label {
  grid-column: span 2;
  justify-content: space-between;
  color: var(--muted);
}

.variant-count-label select {
  background: #050a1e;
  border: 1px solid #1a2050;
  border-radius: 6px;
  color: var(--text);
  padding: 3px 8px;
  font-size: 0.84rem;
  cursor: pointer;
}

.chaos-actions {
  grid-column: span 2;
  display: flex;
  gap: 8px;
}

.toggle-actions {
  grid-column: span 2;
  display: flex;
  gap: 8px;
  margin-top: 4px;
}

.layer-box,
.color-box,
.export-box {
  margin-top: 14px;
  border: 1px solid #1a2050;
  border-radius: 10px;
  padding: 10px 12px 12px;
  display: grid;
  gap: 6px;
}

.layer-box {
  grid-template-columns: repeat(2, 1fr);
}

.color-box {
  grid-template-columns: repeat(2, 1fr);
}

.layer-box legend,
.color-box legend,
.export-box legend {
  color: var(--muted);
  font-size: 0.82rem;
  padding: 0 4px;
  letter-spacing: 0.3px;
}

.export-box {
  grid-template-columns: 1fr 1fr;
}

.export-label {
  display: grid;
  gap: 4px;
  font-size: 0.84rem;
  color: var(--muted);
}

.export-label input[type="number"] {
  padding: 6px 8px;
  font-size: 0.88rem;
  -moz-appearance: textfield;
}

.export-label input[type="number"]::-webkit-inner-spin-button {
  opacity: 0.5;
}

.export-lock-label {
  grid-column: span 2;
}

.chaos-btn {
  flex: 1;
  padding: 5px;
  font-size: 0.78rem;
  border-radius: 7px;
  background: #04061a;
  border: 1px solid #1a2050;
  color: var(--muted);
  cursor: pointer;
  transition: color 120ms, border-color 120ms;
}

.chaos-btn:hover {
  color: var(--text);
  border-color: #5588cc;
}

label {
  display: grid;
  gap: 6px;
  font-size: 0.92rem;
  color: var(--muted);
}

input,
button {
  border: 1px solid #1a2b5e;
  border-radius: 9px;
  background: #060c24;
  color: var(--text);
  padding: 10px;
}

button {
  text-align: center;
}

input[type="range"] {
  padding: 0;
  border: none;
  background: none;
  accent-color: #a8d8ff;
}

input[type="color"] {
  width: 100%;
  min-height: 42px;
  padding: 4px;
}

.actions {
  display: grid;
  gap: 10px;
  margin-top: 16px;
}

.actions-top {
  grid-column: span 2;
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin-top: 2px;
  margin-bottom: 2px;
}

.actions-top button {
  min-height: 42px;
}

button {
  cursor: pointer;
  font-weight: 600;
  transform-style: preserve-3d;
  transform-origin: center;
  transition: transform 220ms cubic-bezier(0.22, 1, 0.36, 1), filter 180ms ease, box-shadow 220ms ease;
}

button:hover {
  transform: perspective(900px) rotateX(14deg) rotateY(-7deg) translateY(-2px) scale(1.02);
  filter: brightness(1.15);
  box-shadow: 0 16px 26px rgba(0, 0, 0, 0.3);
}

button:active {
  transform: perspective(900px) rotateX(-18deg) rotateY(10deg) translateY(1px) scale(0.97);
  filter: brightness(0.94);
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.22);
}

.seed-note {
  margin-top: 14px;
  color: var(--muted);
  font-family: "Courier New", monospace;
  font-size: 0.9rem;
}

#seedDisplay { color: #a8d8ff; }

.preview {
  padding: 14px;
  display: grid;
  gap: 8px;
  align-content: start;
}

#logoCanvas {
  width: 100%;
  height: auto;
  border-radius: 10px;
  border: 1px solid #0f1840;
  background: #010108;
}

.preview h2 {
  margin: 4px 0 0;
  font-size: 1rem;
  color: var(--muted);
}

.variants-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.variant-card {
  border: 1px solid #0f1840;
  border-radius: 10px;
  overflow: hidden;
  background: #030618;
  cursor: pointer;
  padding: 0;
  transform: translateY(0);
  transition: transform 180ms cubic-bezier(0.22, 1, 0.36, 1), border-color 140ms ease, box-shadow 200ms ease;
}

.variant-card:hover {
  border-color: #5599ee;
  transform: translateY(-3px);
  box-shadow: 0 12px 22px rgba(0, 0, 0, 0.34);
}

.variant-card:focus-visible {
  outline: none;
  border-color: #82beff;
  box-shadow: 0 0 0 1px rgba(130, 190, 255, 0.6) inset, 0 10px 20px rgba(0, 0, 0, 0.3);
}

.variant-card.active {
  border-color: #a8d8ff;
  transform: translateY(-2px);
  box-shadow: 0 0 0 1px #a8d8ff inset, 0 10px 20px rgba(20, 50, 105, 0.45);
}

.variant-canvas {
  width: 100%;
  height: auto;
  display: block;
  background: #010108;
}

.variant-seed {
  margin: 0;
  padding: 6px 8px;
  font-size: 0.72rem;
  color: #5577aa;
  font-family: "Courier New", monospace;
  letter-spacing: 0.04em;
  border-top: 1px solid #0d1530;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sitefooter {
  border-top: 1px solid #1a2050;
  padding: 20px 24px;
  margin-top: 24px;
}

.footer-inner {
  max-width: 1248px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-brand {
  font-weight: 700;
  color: #a8d8ff;
  font-size: 0.95rem;
  letter-spacing: 1px;
}

.footer-links {
  display: flex;
  gap: 20px;
}

.footer-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.85rem;
  transition: color 150ms;
}

.footer-links a:hover { color: var(--text); }

.footer-note {
  font-size: 0.78rem;
  color: #3a4e7a;
}

@media (max-width: 960px) {
  .theme-strip-inner,
  .wrap {
    grid-template-columns: 1fr;
  }

  .theme-grid {
    grid-template-columns: 1fr;
    perspective: none;
  }

  .theme-card,
  .theme-card:hover,
  .theme-card:nth-child(2):hover,
  .theme-card:focus-visible,
  .theme-card.current {
    transform: none;
  }

  .variants-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .topnav {
    padding: 0 16px;
  }

  .theme-strip,
  .generator-section,
  .sitefooter {
    padding-left: 16px;
    padding-right: 16px;
  }

  .color-box {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    justify-content: flex-start;
  }
}