/* OKLCHEMY — perceptual color lab for The Lab. */

@font-face { font-family: "Press Start 2P"; font-style: normal; font-weight: 400; font-display: swap; src: url("/press-start-2p.woff2") format("woff2"); }
@font-face { font-family: "Press Start 2P Fallback"; src: local("Courier New"); size-adjust: 166.64%; ascent-override: 60%; descent-override: 0%; line-gap-override: 0%; }

:root {
  --bg: #0a0a12;
  --surface: #12121d;
  --surface-2: #1a1a2a;
  --line: #28283c;
  --text: #e9e9f2;
  --dim: #9aa0b5;
  --cyan: #45f0ff;
  --magenta: #ff3d8b;
  --gold: #ffc857;
  --green: #41ff8b;
  --red: #ff5560;
  --pixel: "Press Start 2P", "Press Start 2P Fallback", "Courier New", monospace;
  --body: -apple-system, "Segoe UI", system-ui, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, monospace;
  --radius: 8px;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --glow-cyan: 0 0 14px rgba(69, 240, 255, 0.35);
  --space-gutter: clamp(16px, 4vw, 48px);
}

*, *::before, *::after { box-sizing: border-box; }
html { color-scheme: dark; }

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: radial-gradient(1200px 500px at 50% -10%, rgba(69, 240, 255, 0.05), transparent 70%), var(--bg);
  color: var(--text);
  font-family: var(--body);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

::selection { background: rgba(69, 240, 255, 0.3); }
[hidden] { display: none !important; }

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  margin: -1px; padding: 0; border: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.skip-link {
  position: absolute;
  left: 12px; top: -48px;
  z-index: 200;
  background: var(--cyan);
  color: #05050d;
  padding: 10px 16px;
  border-radius: 6px;
  font-family: var(--mono);
  font-weight: 700;
  text-decoration: none;
  transition: transform 0.2s var(--ease-out);
}
.skip-link:focus-visible { transform: translateY(60px); }

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
  box-shadow: 0 0 0 5px rgba(69, 240, 255, 0.15);
}

a { color: var(--cyan); }

.site-header {
  padding: 26px var(--space-gutter) 10px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.lab-link {
  align-self: flex-start;
  font-family: var(--pixel);
  font-size: 10px;
  color: var(--dim);
  text-decoration: none;
  padding: 6px 2px;
  transition: color 0.15s, text-shadow 0.15s;
}
.lab-link:hover { color: var(--cyan); text-shadow: var(--glow-cyan); }

.level {
  margin: 0;
  font-family: var(--pixel);
  font-size: 9px;
  letter-spacing: 3px;
  color: var(--gold);
}

.wordmark {
  margin: 6px 0 4px;
  font-family: var(--pixel);
  font-size: clamp(22px, 4.5vw, 34px);
  letter-spacing: 3px;
  color: var(--text);
  text-shadow: 0 0 16px rgba(69, 240, 255, 0.55), 3px 3px 0 var(--magenta);
}

.tagline {
  margin: 0;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--dim);
}

.cursor { color: var(--cyan); animation: blink 1.1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

main {
  flex: 1;
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 20px var(--space-gutter) 72px;
}

.hero-grid, .tool-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-bottom: 16px;
}

.panel, .swatch-panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 16px;
}

.panel-title {
  margin: 0 0 14px;
  font-family: var(--pixel);
  font-size: 10px;
  letter-spacing: 1px;
  color: var(--cyan);
  text-shadow: 0 0 8px rgba(69, 240, 255, 0.4);
}

.main-swatch {
  min-height: 260px;
  border-radius: 8px;
  border: 1px solid rgba(233, 233, 242, 0.18);
  display: flex;
  align-items: flex-start;
  justify-content: flex-end;
  padding: 12px;
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.22);
}

.badge {
  display: inline-flex;
  min-height: 28px;
  align-items: center;
  border: 1px solid rgba(10, 10, 18, 0.3);
  border-radius: 999px;
  padding: 4px 9px;
  background: rgba(10, 10, 18, 0.68);
  color: var(--green);
  font-family: var(--mono);
  font-size: 11px;
}
.badge.is-warn { color: var(--gold); }

.format-grid {
  display: grid;
  gap: 8px;
  margin-top: 12px;
}
.format-grid div {
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr) auto;
  gap: 8px;
  align-items: center;
  min-height: 44px;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-2);
}
.format-grid span, .export-head label, .stack-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 1px;
  color: var(--dim);
}
code, pre, input, select { font-family: var(--mono); }
code {
  min-width: 0;
  color: var(--text);
  word-break: break-all;
  font-size: 12.5px;
}

.copy-btn, .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--surface-2);
  color: var(--text);
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.12s var(--ease-out), border-color 0.12s, box-shadow 0.12s;
}
.copy-btn { min-width: 56px; padding: 7px 9px; }
.btn { gap: 8px; padding: 10px 14px; }
.copy-btn:hover, .btn:hover {
  border-color: var(--cyan);
  box-shadow: 0 0 12px rgba(69, 240, 255, 0.22);
  transform: translateY(-1px);
}
.copy-btn:active, .btn:active { transform: translateY(1px); }
.btn-primary { background: var(--cyan); border-color: var(--cyan); color: #05050d; }
.btn-ghost { background: transparent; }

.picker-panel { display: flex; flex-direction: column; gap: 14px; }
.slider-field { display: grid; gap: 7px; }
.slider-field label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 1px;
  color: var(--dim);
}
.slider-field canvas {
  width: 100%;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-2);
}
.slider-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 96px;
  gap: 10px;
  align-items: center;
}

input[type="range"] {
  width: 100%;
  min-width: 0;
  accent-color: var(--cyan);
}

input[type="text"], input[type="number"], select, textarea {
  width: 100%;
  min-height: 40px;
  min-width: 0;
  background: var(--bg);
  border: 1px solid #5e5e80;
  color: var(--text);
  border-radius: 6px;
  padding: 9px 10px;
  font-size: 13px;
}
input:hover, select:hover, textarea:hover { border-color: #74749a; }

.inline-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
}

.note, .privacy-note {
  margin: 10px 0 0;
  color: var(--dim);
  font-size: 12.5px;
}
.privacy-note { text-align: center; }

.harmony-rack {
  display: grid;
  gap: 10px;
}
.harmony-group {
  display: grid;
  grid-template-columns: 90px minmax(0, 1fr);
  gap: 10px;
  align-items: center;
}
.harmony-group h3 {
  margin: 0;
  color: var(--dim);
  font-family: var(--mono);
  font-size: 12px;
  text-transform: uppercase;
}
.mini-swatches {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(58px, 1fr));
  gap: 8px;
}
.mini-swatch, .ramp-step {
  border: 1px solid rgba(233, 233, 242, 0.18);
  border-radius: 8px;
  min-height: 58px;
  cursor: pointer;
}
.mini-swatch {
  display: flex;
  align-items: end;
  justify-content: center;
  padding: 7px;
  color: #05050d;
  font-family: var(--mono);
  font-size: 10px;
  text-shadow: 0 1px 12px rgba(255, 255, 255, 0.4);
}

.contrast-card {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-top: 12px;
}
.contrast-demo {
  min-height: 170px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(233, 233, 242, 0.16);
  font-size: 58px;
  font-weight: 800;
}
.metric-list {
  display: grid;
  gap: 8px;
  margin: 0;
}
.metric-list div {
  display: grid;
  grid-template-columns: minmax(110px, 1fr) minmax(0, 1fr);
  gap: 8px;
  padding: 9px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-2);
}
.metric-list dt {
  color: var(--dim);
  font-family: var(--mono);
  font-size: 11px;
}
.metric-list dd {
  margin: 0;
  color: var(--text);
  font-family: var(--mono);
  font-size: 12px;
}

.ramp-strip {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
}
.ramp-step {
  min-height: 64px;
  display: grid;
  align-content: space-between;
  padding: 8px;
  font-family: var(--mono);
  font-size: 11px;
}
.ramp-step strong { font-size: 12px; }
.ramp-step span { word-break: break-all; }

.export-head {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  align-items: center;
  margin: 14px 0 10px;
}
.code-box {
  margin: 0;
  max-height: 300px;
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--bg);
  padding: 12px;
}

.toasts {
  position: fixed;
  bottom: 18px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 100;
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: min(440px, calc(100vw - 32px));
  pointer-events: none;
}
.toast {
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-left: 3px solid var(--red);
  color: var(--text);
  padding: 12px 14px;
  border-radius: 8px;
  font-size: 13.5px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
  animation: toast-in 0.22s var(--ease-out) both;
}
.toast-info { border-left-color: var(--cyan); }
.toast-success { border-left-color: var(--green); }
.toast.out { opacity: 0; transform: translateY(6px); transition: opacity 0.25s, transform 0.25s; }
@keyframes toast-in { from { opacity: 0; transform: translateY(10px); } }

.site-footer {
  border-top: 1px solid var(--line);
  padding: 22px var(--space-gutter);
  text-align: center;
  color: var(--dim);
  font-size: 13px;
}
.site-footer a { color: var(--cyan); text-decoration: none; }
.site-footer a:hover { text-decoration: underline; text-shadow: var(--glow-cyan); }

@media (min-width: 640px) {
  .inline-row { grid-template-columns: minmax(0, 1fr) auto auto; }
  .export-head { grid-template-columns: auto minmax(0, 1fr) auto; }
  .ramp-strip { grid-template-columns: repeat(11, minmax(70px, 1fr)); overflow-x: auto; }
}

@media (min-width: 900px) {
  .hero-grid { grid-template-columns: minmax(320px, 0.82fr) minmax(0, 1.18fr); }
  .tool-grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .contrast-card { grid-template-columns: 0.75fr 1fr; }
  .main-swatch { min-height: 386px; }
}

@media (max-width: 480px) {
  .wordmark { letter-spacing: 1px; }
  .format-grid div { grid-template-columns: 1fr; }
  .slider-row { grid-template-columns: 1fr; }
  .harmony-group { grid-template-columns: 1fr; }
  .metric-list div { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .cursor { animation: none; }
}