:root {
  --bg: 234 229 219;
  --card-label: 251 249 245;
  --ink: 32 28 24;
  --muted: 122 112 98;
  --border: 222 213 198;
  --clay: 181 86 60;
  --clay-deep: 150 66 44;
  --good: 43 138 84;
  --warn: 194 130 28;
  --bad: 190 58 46;

  --ease-out-expo: cubic-bezier(0.19, 1, 0.22, 1);
  --ease-out-quad: cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  display: flex;
  justify-content: center;
  padding: 2.5rem 1.25rem;
  background: rgb(var(--bg));
  color: rgb(var(--ink));
  font-family: 'Inter', system-ui, sans-serif;
}

.page {
  width: 100%;
  max-width: 780px;
}

.page-eyebrow {
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgb(var(--clay));
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.page-title {
  font-family: 'Fraunces', serif;
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
}

.page-lede {
  font-size: 0.88rem;
  color: rgb(var(--muted));
  margin-bottom: 1.75rem;
}

/* ---------- Toolbar ---------- */
.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.format-tabs {
  display: flex;
  gap: 0.3rem;
}

.format-tab {
  padding: 0.4rem 0.75rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  font-weight: 500;
  color: rgb(var(--muted));
  background: rgb(var(--card-label));
  border: 1px solid rgb(var(--border));
  border-radius: 999px;
  cursor: pointer;
  transition:
    background-color 150ms ease,
    color 150ms ease,
    border-color 150ms ease;
}

.format-tab.is-active {
  background: rgb(var(--clay));
  border-color: rgb(var(--clay));
  color: white;
}

.toolbar-actions {
  display: flex;
  gap: 0.5rem;
}

.ghost-btn {
  padding: 0.5rem 0.85rem;
  font-family: 'Inter', sans-serif;
  font-size: 0.8rem;
  font-weight: 600;
  color: rgb(var(--ink));
  background: rgb(var(--card-label));
  border: 1px solid rgb(var(--border));
  border-radius: 8px;
  cursor: pointer;
  transition:
    border-color 150ms ease,
    transform 150ms var(--ease-out-quad);
}

.ghost-btn:hover {
  border-color: rgb(var(--clay) / 0.5);
}

.ghost-btn:active {
  transform: scale(0.97);
}

.generate-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.9rem;
  font-family: 'Inter', sans-serif;
  font-size: 0.8rem;
  font-weight: 700;
  color: white;
  background: rgb(var(--clay));
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition:
    background-color 150ms ease,
    transform 150ms var(--ease-out-quad);
}

.generate-btn:hover {
  background: rgb(var(--clay-deep));
}

.generate-btn:active {
  transform: scale(0.97);
}

.generate-btn kbd {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.64rem;
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
  background: rgb(255 255 255 / 0.2);
}

/* ---------- Palette ---------- */
.palette {
  display: flex;
  gap: 0.9rem;
  flex-wrap: wrap;
}

.chip {
  flex: 1 1 130px;
  min-width: 130px;
  display: flex;
  flex-direction: column;
  border-radius: 14px 14px 8px 8px;
  overflow: hidden;
  background: rgb(var(--card-label));
  box-shadow: 0 20px 40px -26px rgb(30 20 12 / 0.4);
}

.chip-color-wrap {
  position: relative;
  height: 190px;
}

.chip-swatch {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: none;
  cursor: pointer;
  transition: background-color 260ms ease;
}

.chip-swatch.is-popping {
  animation: chip-pop 320ms var(--ease-out-quad);
}

@keyframes chip-pop {
  0% {
    transform: scale(1);
  }
  40% {
    transform: scale(0.94);
  }
  100% {
    transform: scale(1);
  }
}

@media (prefers-reduced-motion: reduce) {
  .chip-swatch.is-popping {
    animation: none;
  }
}

.chip-lock {
  position: absolute;
  z-index: 1;
  top: 0.6rem;
  right: 0.6rem;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: 50%;
  background: rgb(255 255 255 / 0.85);
  color: rgb(var(--ink));
  cursor: pointer;
  transition:
    background-color 150ms ease,
    transform 150ms var(--ease-out-quad);
}

.chip-lock svg {
  width: 14px;
  height: 14px;
}

.chip-lock:hover {
  transform: scale(1.08);
}

.chip-lock.is-locked {
  background: rgb(var(--clay));
  color: white;
}

.chip-label {
  padding: 0.7rem 0.75rem 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  cursor: pointer;
}

.chip-code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.76rem;
  font-weight: 700;
  color: rgb(var(--ink));
  word-break: break-word;
}

.chip-contrast {
  align-self: flex-start;
  font-size: 0.64rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  padding: 0.15rem 0.45rem;
  border-radius: 999px;
}

.chip-contrast.level-aaa {
  color: rgb(var(--good));
  background: rgb(var(--good) / 0.14);
}

.chip-contrast.level-aa {
  color: rgb(var(--warn));
  background: rgb(var(--warn) / 0.14);
}

.chip-contrast.level-low {
  color: rgb(var(--bad));
  background: rgb(var(--bad) / 0.14);
}

.scheme-hint {
  margin-top: 1rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  color: rgb(var(--muted));
}

@media (max-width: 640px) {
  .palette {
    gap: 0.7rem;
  }

  .chip {
    flex: 1 1 calc(50% - 0.7rem);
  }
}