:root {
  color-scheme: dark;
  --bg: #171421;
  --bg-soft: #211d2d;
  --surface: rgba(244, 239, 229, 0.08);
  --surface-strong: rgba(244, 239, 229, 0.14);
  --text: #f7f0e4;
  --muted: #c8bdad;
  --line: rgba(247, 240, 228, 0.18);
  --primary: #f5c76b;
  --primary-ink: #201305;
  --aqua: #7bd6c5;
  --rust: #d87d5f;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
  --radius-lg: 28px;
  --radius-md: 18px;
  --focus: 0 0 0 4px rgba(123, 214, 197, 0.35);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--bg);
}

body {
  min-height: 100dvh;
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(123, 214, 197, 0.18), transparent 34rem),
    radial-gradient(circle at 82% 12%, rgba(245, 199, 107, 0.16), transparent 28rem),
    radial-gradient(circle at 50% 100%, rgba(216, 125, 95, 0.18), transparent 28rem),
    var(--bg);
  overflow-x: clip;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.026) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 34px 34px;
  mask-image: linear-gradient(to bottom, black, transparent 78%);
}

button,
input,
select {
  font: inherit;
}

button,
select,
input[type="range"],
input[type="checkbox"] {
  cursor: pointer;
}

button:focus-visible,
select:focus-visible,
input:focus-visible,
a:focus-visible {
  outline: none;
  box-shadow: var(--focus);
}

.skip-link {
  position: fixed;
  left: 1rem;
  top: 1rem;
  z-index: 20;
  transform: translateY(-160%);
  border-radius: 999px;
  background: var(--primary);
  color: var(--primary-ink);
  padding: 0.75rem 1rem;
  font-weight: 800;
  transition: transform 180ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.page-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 32px 0 48px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 24px;
  align-items: end;
  margin-bottom: 24px;
}

.hero-copy {
  max-width: 760px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--aqua);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

h1,
h2 {
  margin: 0;
  letter-spacing: -0.055em;
  line-height: 0.96;
}

h1 {
  max-width: 800px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(3rem, 9vw, 7.8rem);
  font-weight: 700;
}

h2 {
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(2rem, 4vw, 3.4rem);
}

.hero p:not(.eyebrow) {
  max-width: 620px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: clamp(1rem, 2vw, 1.18rem);
  line-height: 1.65;
}

.hero-actions,
.button-row,
.seed-row {
  display: flex;
  gap: 12px;
  align-items: center;
}

.hero-actions {
  flex-wrap: wrap;
  justify-content: flex-end;
}

.button {
  min-height: 48px;
  border: 1px solid var(--line);
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 0.85rem 1.1rem;
  color: var(--text);
  background: var(--surface);
  font-weight: 800;
  text-decoration: none;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background 180ms ease;
  touch-action: manipulation;
}

.button:hover {
  transform: translateY(-1px);
  border-color: rgba(247, 240, 228, 0.34);
  background: var(--surface-strong);
}

.button:active {
  transform: translateY(1px) scale(0.99);
}

.button.primary {
  border-color: transparent;
  color: var(--primary-ink);
  background: linear-gradient(135deg, var(--primary), #fff0a8);
}

.button.ghost {
  backdrop-filter: blur(16px);
}

.button.compact {
  min-height: 46px;
  padding-inline: 0.9rem;
  white-space: nowrap;
}

.button svg {
  width: 19px;
  height: 19px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.studio-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 390px);
  gap: 20px;
  align-items: start;
}

.canvas-card,
.controls-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(145deg, rgba(244, 239, 229, 0.12), rgba(244, 239, 229, 0.055));
  box-shadow: var(--shadow);
  backdrop-filter: blur(22px);
}

.canvas-card {
  padding: 14px;
}

.canvas-toolbar {
  min-height: 46px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 0 4px 12px;
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 700;
}

#seed-label {
  color: var(--primary);
  font-variant-numeric: tabular-nums;
}

canvas {
  display: block;
  width: 100%;
  aspect-ratio: 1;
  border: 1px solid rgba(247, 240, 228, 0.16);
  border-radius: 22px;
  background: #f4efe5;
}

.controls-card {
  position: sticky;
  top: 16px;
  padding: 20px;
}

.panel-heading {
  margin-bottom: 20px;
}

.field,
.slider-field {
  display: grid;
  gap: 8px;
  margin-bottom: 16px;
}

.field span,
.slider-field label {
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 800;
}

.slider-field label {
  display: flex;
  justify-content: space-between;
  gap: 16px;
}

.slider-field strong {
  color: var(--primary);
  font-variant-numeric: tabular-nums;
}

select,
input[type="text"],
input[name="seed"] {
  width: 100%;
  min-height: 48px;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 0.8rem 0.9rem;
  color: var(--text);
  background: rgba(23, 20, 33, 0.82);
}

input[type="range"] {
  width: 100%;
  accent-color: var(--primary);
}

.toggle-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin: 18px 0;
}

.toggle {
  min-height: 48px;
  border: 1px solid var(--line);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0.7rem 0.6rem;
  color: var(--muted);
  background: rgba(23, 20, 33, 0.48);
  font-size: 0.86rem;
  font-weight: 800;
}

.toggle:has(input:checked) {
  border-color: rgba(245, 199, 107, 0.7);
  color: var(--text);
  background: rgba(245, 199, 107, 0.12);
}

.toggle input {
  width: 18px;
  height: 18px;
  accent-color: var(--primary);
}

.seed-row {
  align-items: end;
  margin-bottom: 18px;
}

.seed-field {
  flex: 1;
  margin: 0;
}

.button-row {
  flex-wrap: wrap;
}

.button-row .button {
  flex: 1;
}

.note {
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.55;
}

@media (max-width: 920px) {
  .hero,
  .studio-grid {
    grid-template-columns: 1fr;
  }

  .hero-actions {
    justify-content: flex-start;
  }

  .controls-card {
    position: static;
  }
}

@media (max-width: 560px) {
  .page-shell {
    width: min(100% - 20px, 1180px);
    padding-top: 20px;
  }

  .hero-actions,
  .button-row,
  .seed-row {
    align-items: stretch;
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .toggle-grid {
    grid-template-columns: 1fr;
  }

  .canvas-toolbar {
    align-items: flex-start;
    flex-direction: column;
    min-height: auto;
  }

  .canvas-card,
  .controls-card {
    border-radius: 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 1ms !important;
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
  }
}