:root {
  --bg-0: #fff6f1;
  --bg-1: #f7e2d7;
  --bg-2: #ffd6c4;
  --bg-glow-a: #ffe5da;
  --bg-glow-b: #fff4b8;
  --ink-0: #111217;
  --ink-1: #3f4652;
  --line: color-mix(in srgb, var(--accent), #ffffff 70%);
  --line-strong: color-mix(in srgb, var(--accent), #111217 36%);
  --panel: rgba(255, 255, 255, 0.82);
  --panel-strong: rgba(255, 255, 255, 0.9);
  --shadow: rgba(20, 22, 28, 0.13);
  --accent: #ff6a3d;
  --accent-ink: #ffffff;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: "Space Grotesk", "Segoe UI", sans-serif;
  color: var(--ink-0);
  background:
    radial-gradient(1400px 1200px at -12% -30%, var(--bg-glow-a) 0%, transparent 60%),
    radial-gradient(1200px 1200px at 110% -10%, var(--bg-glow-b) 0%, transparent 58%),
    linear-gradient(145deg, var(--bg-0), var(--bg-1), var(--bg-2));
  overflow-x: hidden;
  transition: background 220ms ease;
}

.background-shape {
  position: fixed;
  z-index: -2;
  pointer-events: none;
}

.shape-a {
  width: 38rem;
  height: 38rem;
  top: -11rem;
  right: -12rem;
  border-radius: 70% 30% 36% 64% / 45% 43% 57% 55%;
  background: linear-gradient(180deg, var(--bg-glow-a) 0%, var(--bg-1) 100%);
  opacity: 0.5;
  animation: driftA 20s ease-in-out infinite;
}

.shape-b {
  width: 32rem;
  height: 32rem;
  bottom: -12rem;
  left: -9rem;
  border-radius: 46% 54% 62% 38% / 33% 56% 44% 67%;
  background: linear-gradient(130deg, var(--bg-2) 0%, var(--bg-glow-b) 100%);
  opacity: 0.48;
  animation: driftB 24s ease-in-out infinite;
}

.background-grid {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(to right, color-mix(in srgb, var(--accent), transparent 88%) 1px, transparent 1px),
    linear-gradient(to bottom, color-mix(in srgb, var(--accent), transparent 88%) 1px, transparent 1px);
  background-size: 30px 30px;
  mask-image: radial-gradient(circle at center, rgba(0, 0, 0, 0.8), transparent 88%);
}

.app {
  width: calc(100% - 2rem);
  margin: 1rem auto 2rem;
}

.hero {
  border: 1px solid var(--line-strong);
  border-radius: 1.1rem;
  padding: 1.2rem;
  background: var(--panel-strong);
  backdrop-filter: blur(5px);
  box-shadow: 0 16px 34px var(--shadow);
  animation: reveal 420ms ease-out;
}

.kicker {
  margin: 0;
  font-family: "IBM Plex Mono", Consolas, monospace;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #646c79;
}

h1 {
  margin: 0.4rem 0 0;
  font-family: "Sora", "Space Grotesk", sans-serif;
  font-size: clamp(1.8rem, 5.4vw, 3.9rem);
  line-height: 1;
  letter-spacing: 0.01em;
}

.intro {
  margin: 0.85rem 0 1.1rem;
  max-width: 78ch;
  color: var(--ink-1);
  font-size: 0.98rem;
}

.hero-deck {
  display: grid;
  gap: 0.82rem;
  grid-template-columns: minmax(22rem, 0.95fr) minmax(26rem, 1.35fr);
  align-items: stretch;
}

.controls {
  display: grid;
  grid-template-columns: auto minmax(12rem, 16rem) repeat(2, minmax(10rem, 1fr));
  gap: 0.72rem;
  align-items: end;
}

.locked-dock {
  border: 1px solid var(--line);
  border-radius: 0.74rem;
  padding: 0.7rem;
  background: rgba(255, 255, 255, 0.58);
}

.locked-dock-header {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 0.7rem;
  margin-bottom: 0.6rem;
}

.locked-dock-header h2 {
  font-size: 0.86rem;
}

.locked-dock-header p {
  margin: 0.22rem 0 0;
  font-size: 0.82rem;
  color: var(--ink-1);
}

.picker-wrap {
  display: inline-flex;
}

#colorPicker,
#fgPicker,
#bgPicker {
  width: 4.2rem;
  height: 2.9rem;
  border: 1px solid var(--line-strong);
  border-radius: 0.58rem;
  padding: 0.18rem;
  cursor: pointer;
  background: #fff;
}

.hex-input-wrap {
  display: grid;
  gap: 0.32rem;
}

.hex-input-wrap span,
.contrast-pair label {
  font-size: 0.82rem;
  color: var(--ink-1);
}

#hexInput,
#fgHexInput,
#bgHexInput {
  width: 100%;
  height: 2.9rem;
  border: 1px solid var(--line-strong);
  border-radius: 0.58rem;
  padding: 0 0.75rem;
  font-family: "IBM Plex Mono", Consolas, monospace;
  font-size: 0.95rem;
  background: #fff;
  color: #0f131d;
}

#hexInput:focus,
#fgHexInput:focus,
#bgHexInput:focus {
  outline: none;
  border-color: #9f7a48;
  box-shadow: 0 0 0 3px rgba(159, 122, 72, 0.2);
}

.btn {
  appearance: none;
  height: 2.9rem;
  border-radius: 0.58rem;
  border: 1px solid transparent;
  cursor: pointer;
  font-weight: 700;
  font-size: 0.92rem;
  font-family: inherit;
  transition: transform 120ms ease, filter 120ms ease;
}

.btn:hover {
  transform: translateY(-1px);
  filter: saturate(1.08);
}

.btn:active {
  transform: translateY(0);
}

.btn-primary {
  background: linear-gradient(95deg, var(--accent) 0%, color-mix(in srgb, var(--accent), #ffffff 22%) 100%);
  color: var(--accent-ink);
}

.btn-secondary {
  border-color: var(--line-strong);
  background: #fff9ed;
  color: #2d3440;
}

.layout-grid {
  margin-top: 1rem;
  display: grid;
  gap: 0.95rem;
  grid-template-columns: repeat(12, minmax(0, 1fr));
}

.tuning-panel {
  border-color: var(--line-strong);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.9), rgba(255, 255, 255, 0.7)),
    linear-gradient(90deg, var(--bg-glow-a), var(--bg-glow-b));
}

.panel {
  border: 1px solid var(--line);
  border-radius: 1.05rem;
  padding: 0.95rem;
  background: var(--panel);
  backdrop-filter: blur(4px);
  box-shadow: 0 8px 24px var(--shadow);
  animation: reveal 420ms ease-out;
}

.span-4 {
  grid-column: span 4;
}

.span-6 {
  grid-column: span 6;
}

.span-8 {
  grid-column: span 8;
}

.span-12 {
  grid-column: span 12;
}

.panel-header {
  margin-bottom: 0.75rem;
}

.panel-header-row {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 1rem;
}

.panel-actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.panel-actions .btn {
  height: 2.55rem;
  padding: 0 0.85rem;
}

.tuning-controls {
  display: grid;
  gap: 0.66rem;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: start;
}

.segmented-control {
  display: flex;
  gap: 0.34rem;
  flex-wrap: wrap;
}

.segment-btn {
  appearance: none;
  border: 1px solid var(--line);
  border-radius: 0.48rem;
  padding: 0.48rem 0.66rem;
  cursor: pointer;
  background: rgba(255, 255, 255, 0.68);
  color: #222832;
  font-family: inherit;
  font-size: 0.82rem;
  font-weight: 700;
}

.segment-btn:hover {
  border-color: var(--line-strong);
}

.segment-btn.is-active {
  border-color: color-mix(in srgb, var(--accent), #111217 30%);
  background: var(--accent);
  color: var(--accent-ink);
}

.intensity-control {
  justify-content: flex-end;
}

.tuning-output {
  margin-top: 0.82rem;
  display: grid;
  gap: 0.8rem;
  grid-template-columns: minmax(10rem, 14rem) minmax(0, 1fr);
  align-items: stretch;
}

.tuning-name {
  margin: 0;
  font-family: "Sora", "Space Grotesk", sans-serif;
  font-size: 1.2rem;
  letter-spacing: 0;
}

.tuning-description {
  margin: 0.34rem 0 0;
  color: var(--ink-1);
  font-size: 0.92rem;
}

h2 {
  margin: 0;
  font-family: "Sora", "Space Grotesk", sans-serif;
  font-size: 0.98rem;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.panel-header p {
  margin: 0.34rem 0 0;
  font-size: 0.9rem;
  color: var(--ink-1);
}

.swatch-grid {
  display: grid;
  gap: 0.62rem;
}

.locked-grid {
  grid-template-columns: repeat(6, minmax(0, 1fr));
}

.locked-grid .swatch-color {
  min-height: 2.7rem;
}

.locked-grid .swatch-meta {
  padding: 0.34rem 0.4rem;
}

.locked-grid .swatch-label {
  display: none;
}

.tuned-grid {
  grid-template-columns: repeat(10, minmax(0, 1fr));
}

.tuned-grid .swatch-color {
  min-height: 6.2rem;
}

.tuned-grid .swatch-meta {
  align-items: flex-start;
  flex-direction: column;
}

.tuned-grid .swatch-actions {
  justify-content: flex-start;
}

.three-up {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.four-up {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.five-up {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.six-up {
  grid-template-columns: repeat(6, minmax(0, 1fr));
}

.eight-up {
  grid-template-columns: repeat(8, minmax(0, 1fr));
}

.nine-up {
  grid-template-columns: repeat(9, minmax(0, 1fr));
}

.eleven-up {
  grid-template-columns: repeat(11, minmax(0, 1fr));
}

.twelve-up {
  grid-template-columns: repeat(12, minmax(0, 1fr));
}

.twenty-four-up {
  grid-template-columns: repeat(24, minmax(0, 1fr));
}

.swatch-card {
  border: 1px solid rgba(70, 56, 37, 0.2);
  border-radius: 0.74rem;
  overflow: hidden;
  background: #fff;
}

.spectrum-strip {
  display: grid;
  grid-template-columns: repeat(24, minmax(0, 1fr));
  min-height: 5.8rem;
  overflow: hidden;
  border: 1px solid rgba(70, 56, 37, 0.22);
  border-radius: 0.74rem;
  background: #fff;
}

.spectrum-segment {
  appearance: none;
  border: 0;
  min-width: 0;
  cursor: pointer;
  transition: transform 120ms ease, filter 120ms ease;
}

.spectrum-segment:hover {
  filter: brightness(1.08) saturate(1.08);
  transform: scaleY(1.06);
}

.swatch-color {
  border: 0;
  display: block;
  width: 100%;
  min-height: 3.8rem;
  cursor: pointer;
}

.swatch-color:hover {
  filter: brightness(1.03);
}

.swatch-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.42rem;
  padding: 0.4rem 0.48rem;
}

.swatch-label {
  font-family: "IBM Plex Mono", Consolas, monospace;
  font-size: 0.72rem;
}

.swatch-actions {
  display: flex;
  gap: 0.28rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.copy-btn,
.lock-btn {
  border: 1px solid rgba(43, 42, 42, 0.22);
  background: rgba(255, 255, 255, 0.62);
  border-radius: 0.34rem;
  padding: 0.18rem 0.44rem;
  font-size: 0.7rem;
  cursor: pointer;
}

.lock-btn.is-locked {
  font-weight: 700;
}

.empty-state {
  grid-column: 1 / -1;
  margin: 0;
  padding: 0.85rem;
  border: 1px dashed var(--line-strong);
  border-radius: 0.64rem;
  color: var(--ink-1);
  background: rgba(255, 255, 255, 0.55);
}

.harmony-rows {
  display: grid;
  gap: 0.48rem;
}

.harmony-row {
  display: grid;
  grid-template-columns: minmax(9rem, 13rem) minmax(0, 1fr);
  gap: 0.7rem;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 0.66rem;
  padding: 0.52rem;
  background: var(--panel);
}

.harmony-row-head {
  min-width: 0;
}

.harmony-row-head h3 {
  margin: 0;
  font-size: 0.82rem;
  font-family: "Sora", "Space Grotesk", sans-serif;
  letter-spacing: 0;
}

.harmony-row-head p {
  margin: 0.16rem 0 0;
  color: var(--ink-1);
  font-size: 0.74rem;
  line-height: 1.25;
}

.harmony-swatch-grid {
  grid-template-columns: repeat(auto-fit, minmax(7.2rem, 1fr));
}

.harmony-swatch-grid .swatch-color {
  min-height: 2.4rem;
}

.harmony-swatch-grid .swatch-meta {
  padding: 0.28rem 0.36rem;
}

.harmony-swatch-grid .swatch-label {
  font-size: 0.66rem;
}

.harmony-swatch-grid .copy-btn,
.harmony-swatch-grid .lock-btn {
  padding: 0.12rem 0.32rem;
  font-size: 0.64rem;
}

.palette-preview-panel {
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.88), rgba(255, 255, 255, 0.72)),
    linear-gradient(90deg, var(--bg-glow-b), var(--bg-glow-a));
}

.palette-preview-layout {
  display: grid;
  gap: 0.9rem;
  grid-template-columns: minmax(0, 1.4fr) minmax(18rem, 0.6fr);
  align-items: stretch;
}

.compact-metrics {
  margin-top: 0;
  min-width: min(34rem, 100%);
}

.palette-preview {
  --preview-root: var(--accent);
  --preview-low: #101218;
  --preview-high: #ffffff;
  --preview-detune: var(--accent);
  --preview-counter: #4a525e;
  --preview-bridge: #dfe4e7;
  --preview-noise: #2f3440;
  --preview-neutral-dark: #1c1f26;
  --preview-neutral-mid: #8a8d96;
  --preview-neutral-light: #f4f4f6;
  display: grid;
  grid-template-columns: minmax(9rem, 0.25fr) minmax(0, 1fr);
  min-height: 18rem;
  overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--preview-neutral-dark), transparent 82%);
  border-radius: 0.8rem;
  color: var(--preview-neutral-dark);
  background: var(--preview-neutral-light);
}

.preview-sidebar {
  display: grid;
  align-content: start;
  gap: 0.46rem;
  padding: 0.9rem;
  color: var(--preview-high);
  background: var(--preview-neutral-dark);
}

.preview-logo {
  width: 2.2rem;
  height: 2.2rem;
  margin-bottom: 0.5rem;
  border-radius: 50%;
  background: var(--preview-detune);
}

.preview-sidebar button,
.preview-actions button {
  border: 1px solid color-mix(in srgb, currentColor, transparent 65%);
  border-radius: 0.42rem;
  padding: 0.45rem 0.6rem;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

.preview-sidebar button {
  color: var(--preview-high);
  background: color-mix(in srgb, var(--preview-high), transparent 88%);
  text-align: left;
}

.preview-main {
  display: grid;
  gap: 0.8rem;
  padding: 0.95rem;
}

.preview-topline {
  display: flex;
  justify-content: space-between;
  gap: 0.7rem;
  color: var(--preview-neutral-mid);
  font-family: "IBM Plex Mono", Consolas, monospace;
  font-size: 0.78rem;
}

.preview-hero-card {
  min-height: 8.4rem;
  border-radius: 0.7rem;
  padding: 1rem;
  color: var(--preview-high);
  background: var(--preview-root);
}

.preview-kicker {
  display: inline-block;
  margin-bottom: 0.55rem;
  border-radius: 999px;
  padding: 0.22rem 0.48rem;
  color: var(--preview-low);
  background: var(--preview-high);
  font-family: "IBM Plex Mono", Consolas, monospace;
  font-size: 0.68rem;
}

.preview-hero-card h3 {
  margin: 0;
  max-width: 18ch;
  font-family: "Sora", "Space Grotesk", sans-serif;
  font-size: 1.55rem;
  letter-spacing: 0;
}

.preview-hero-card p {
  max-width: 46ch;
  margin: 0.55rem 0 0;
}

.preview-actions {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.9rem;
  flex-wrap: wrap;
}

.preview-actions button:first-child {
  color: var(--preview-low);
  background: var(--preview-high);
}

.preview-actions button:last-child {
  color: var(--preview-high);
  background: color-mix(in srgb, var(--preview-low), transparent 70%);
}

.preview-card-grid {
  display: grid;
  gap: 0.7rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.preview-mini-card {
  min-height: 5rem;
  border: 1px solid color-mix(in srgb, var(--preview-neutral-dark), transparent 85%);
  border-radius: 0.64rem;
  padding: 0.74rem;
  color: var(--preview-neutral-dark);
  background: var(--preview-neutral-light);
}

.preview-mini-card span {
  display: block;
  color: var(--preview-neutral-mid);
  font-size: 0.75rem;
}

.preview-mini-card strong {
  display: block;
  margin-top: 0.32rem;
  font-family: "Sora", "Space Grotesk", sans-serif;
}

.detune-card,
.accent-card,
.noise-card {
  color: var(--preview-high);
  border-color: transparent;
}

.detune-card span,
.accent-card span,
.noise-card span {
  color: color-mix(in srgb, var(--preview-high), transparent 22%);
}

.detune-card {
  background: var(--preview-detune);
}

.accent-card {
  background: var(--preview-counter);
}

.noise-card {
  background: var(--preview-noise);
}

.preview-controls .contrast-candidates {
  grid-template-columns: 1fr;
}

.preview-controls .candidate-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.contrast-layout {
  display: grid;
  gap: 0.9rem;
  grid-template-columns: 1.2fr 1fr;
}

.contrast-controls {
  border: 1px solid var(--line);
  border-radius: 0.84rem;
  padding: 0.75rem;
  background: var(--panel);
}

.contrast-pair + .contrast-pair {
  margin-top: 0.58rem;
}

.contrast-input-row {
  margin-top: 0.26rem;
  display: grid;
  gap: 0.52rem;
  grid-template-columns: auto 1fr;
  align-items: center;
}

.contrast-buttons {
  margin-top: 0.68rem;
  display: grid;
  gap: 0.5rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.contrast-buttons .btn {
  height: 2.6rem;
}

.contrast-metrics {
  margin-top: 0.74rem;
  display: grid;
  gap: 0.5rem;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.metric-card {
  border: 1px solid rgba(122, 97, 65, 0.25);
  border-radius: 0.62rem;
  padding: 0.5rem 0.52rem;
  background: #fff;
}

.metric-label {
  display: block;
  font-size: 0.72rem;
  color: var(--ink-1);
}

.metric-card strong {
  margin-top: 0.18rem;
  display: block;
  font-family: "IBM Plex Mono", Consolas, monospace;
  font-size: 0.83rem;
}

.pass {
  color: #136d36;
}

.fail {
  color: #a22323;
}

.contrast-preview-wrap {
  border: 1px solid var(--line);
  border-radius: 0.84rem;
  padding: 0.7rem;
  background: var(--panel);
}

.contrast-preview {
  min-height: 11.5rem;
  border-radius: 0.7rem;
  padding: 1rem;
  transition: background-color 180ms ease, color 180ms ease;
}

.contrast-preview h3 {
  margin: 0;
  font-family: "Sora", "Space Grotesk", sans-serif;
  font-size: 1.38rem;
}

.contrast-preview p {
  margin: 0.56rem 0 0;
}

.contrast-preview small {
  margin-top: 0.74rem;
  display: block;
}

.contrast-candidates {
  margin-top: 0.84rem;
  display: grid;
  gap: 0.74rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.subhead {
  margin: 0 0 0.45rem;
  font-size: 0.82rem;
  text-transform: uppercase;
  color: var(--ink-1);
  letter-spacing: 0.03em;
}

.candidate-grid {
  display: grid;
  gap: 0.5rem;
  grid-template-columns: repeat(6, minmax(0, 1fr));
}

.candidate-card {
  border: 1px solid rgba(108, 83, 52, 0.25);
  border-radius: 0.55rem;
  overflow: hidden;
  background: #fff;
}

.candidate-swatch {
  border: 0;
  width: 100%;
  height: 2.25rem;
  cursor: pointer;
}

.candidate-meta {
  padding: 0.28rem 0.34rem 0.34rem;
  font-family: "IBM Plex Mono", Consolas, monospace;
  font-size: 0.64rem;
}

.candidate-hex,
.candidate-ratio {
  display: block;
}

.candidate-ratio {
  color: var(--ink-1);
}

.copy-btn:focus-visible,
.lock-btn:focus-visible,
.btn:focus-visible,
.segment-btn:focus-visible,
.swatch-color:focus-visible,
.candidate-swatch:focus-visible,
.spectrum-segment:focus-visible {
  outline: 3px solid rgba(200, 116, 70, 0.44);
  outline-offset: 2px;
}

.btn:disabled {
  cursor: not-allowed;
  opacity: 0.55;
  transform: none;
  filter: none;
}

@keyframes reveal {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes driftA {
  0%,
  100% {
    transform: translate(0, 0) rotate(0deg);
  }
  50% {
    transform: translate(-14px, 18px) rotate(6deg);
  }
}

@keyframes driftB {
  0%,
  100% {
    transform: translate(0, 0) rotate(0deg);
  }
  50% {
    transform: translate(15px, -12px) rotate(-6deg);
  }
}

@media (max-width: 1320px) {
  .span-4,
  .span-6,
  .span-8 {
    grid-column: span 12;
  }

  .eight-up {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .four-up,
  .five-up,
  .six-up {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .nine-up {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .eleven-up {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .twenty-four-up {
    grid-template-columns: repeat(12, minmax(0, 1fr));
  }

  .contrast-layout {
    grid-template-columns: 1fr;
  }

  .tuning-controls,
  .tuning-output {
    grid-template-columns: 1fr;
  }

  .intensity-control {
    justify-content: flex-start;
  }

  .hero-deck {
    grid-template-columns: 1fr;
  }

  .palette-preview-layout {
    grid-template-columns: 1fr;
  }

  .harmony-row {
    grid-template-columns: minmax(8rem, 11rem) minmax(0, 1fr);
  }
}

@media (max-width: 980px) {
  .app {
    width: calc(100% - 1.2rem);
  }

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

  .picker-wrap,
  .hex-input-wrap {
    grid-column: span 2;
  }

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

  .four-up,
  .five-up,
  .six-up {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .twelve-up {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .locked-grid {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .locked-dock-header {
    align-items: start;
    flex-direction: column;
  }

  .tuned-grid {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .twenty-four-up {
    grid-template-columns: repeat(8, minmax(0, 1fr));
  }

  .spectrum-strip {
    min-height: 4.9rem;
  }

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

  .contrast-candidates {
    grid-template-columns: 1fr;
  }

  .candidate-grid {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .panel-header-row {
    align-items: start;
    flex-direction: column;
  }

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

  .palette-preview {
    grid-template-columns: 1fr;
  }

  .preview-sidebar {
    grid-template-columns: auto repeat(3, minmax(0, 1fr));
    align-items: center;
  }

  .preview-logo {
    margin-bottom: 0;
  }

  .harmony-row {
    grid-template-columns: 1fr;
  }

  .harmony-swatch-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .app {
    width: calc(100% - 0.7rem);
    margin: 0.5rem auto 1rem;
  }

  .hero,
  .panel {
    border-radius: 0.84rem;
    padding: 0.75rem;
  }

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

  .picker-wrap,
  .hex-input-wrap {
    grid-column: auto;
  }

  .eight-up,
  .nine-up,
  .eleven-up {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .four-up,
  .five-up,
  .six-up {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .twelve-up {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .tuned-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .tuned-grid .swatch-color {
    min-height: 4.8rem;
  }

  .twenty-four-up {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .spectrum-strip {
    min-height: 4.2rem;
  }

  .contrast-buttons {
    grid-template-columns: 1fr;
  }

  .candidate-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .preview-sidebar {
    grid-template-columns: 1fr;
  }

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

  .preview-controls .candidate-grid {
    grid-template-columns: 1fr;
  }

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