/* Token Lab - стилі застосунку.
   Усі кольори UI - тут, у :root. Палітра користувача живе тільки у свотчах
   і прев'ю й приходить з app.js через змінні --c, --p-*, --chip-*. */

:root {
  --bg: #f4f3ef;
  --surface: #ffffff;
  --text: #141413;
  --text-2: #3d3c38;
  --muted: #6e6d66;
  --border: #e3e1d9;
  --border-strong: #cfccc1;
  --accent: #141413;
  --on-accent: #f4f3ef;
  --success: #1d7a46;
  --success-bg: #e3f3e8;
  --danger: #b8321d;
  --danger-bg: #f8e4df;
  --stroke-swatch: rgb(0 0 0 / 0.06);
  --stroke-swatch-hover: rgb(0 0 0 / 0.24);
  --stroke-chip: rgb(0 0 0 / 0.1);
  --stroke-chip-soft: rgb(0 0 0 / 0.08);
  --tag-bg: rgb(255 255 255 / 0.9);
  --focus: #141413;

  --radius: 6px;
  --radius-lg: 10px;
  --topbar-h: 64px;
  --gutter: 40px;

  --font: 'Geist', ui-sans-serif, system-ui, sans-serif;
  --mono: 'Geist Mono', ui-monospace, 'SF Mono', Menlo, monospace;
}

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

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 400 14px/1.4 var(--font);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1,
h2,
p,
dl,
dd {
  margin: 0;
}

button,
input {
  font: inherit;
  color: inherit;
}

:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

/* ---------- кнопки ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 40px;
  padding: 0 16px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent);
  color: var(--on-accent);
}

.btn:disabled {
  opacity: 0.7;
  cursor: progress;
}

.btn-outline {
  height: 32px;
  padding: 0 12px;
  background: var(--surface);
  border-color: var(--border);
  color: var(--text);
}

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

/* ---------- topbar ---------- */

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 32px;
  height: var(--topbar-h);
  padding: 0 var(--gutter);
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: inherit;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.01em;
  text-decoration: none;
}

.logo-mark {
  width: 18px;
  height: 18px;
  border-radius: 5px;
  background: var(--c);
  box-shadow: inset 0 0 0 1px var(--stroke-swatch);
}

.nav {
  display: flex;
  gap: 24px;
}

.nav a {
  color: var(--muted);
  font-size: 14px;
  text-decoration: none;
}

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

.topbar .btn {
  margin-left: auto;
}

/* ---------- layout ---------- */

.layout {
  display: grid;
  grid-template-columns: 360px minmax(0, 1fr);
}

.panel {
  border-right: 1px solid var(--border);
}

.panel-inner {
  position: sticky;
  top: var(--topbar-h);
  display: flex;
  flex-direction: column;
  gap: 28px;
  padding: 40px 32px 40px 40px;
}

.main {
  min-width: 0;
  padding: 0 var(--gutter) var(--gutter);
}

/* ---------- ліва панель ---------- */

.eyebrow {
  color: var(--muted);
  font: 500 12px/1 var(--mono);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.intro {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

h1 {
  font-size: 34px;
  font-weight: 600;
  line-height: 1.08;
  letter-spacing: -0.03em;
}

.intro p {
  color: var(--text-2);
  font-size: 15px;
  line-height: 1.5;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.field-label {
  color: var(--text-2);
  font-size: 13px;
  font-weight: 500;
}

.hex-box {
  display: flex;
  align-items: center;
  gap: 8px;
  height: 56px;
  padding: 0 12px 0 8px;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
}

.hex-box:focus-within {
  border-color: var(--text);
}

.hex-box[data-invalid] {
  border-color: var(--danger);
}

.hex-picker {
  position: relative;
  flex: none;
  width: 40px;
  height: 40px;
  border-radius: var(--radius);
  background: var(--c);
  box-shadow: inset 0 0 0 1px var(--stroke-swatch);
}

.hex-picker:focus-within {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

.hex-picker input {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  padding: 0;
  border: 0;
  opacity: 0;
  cursor: pointer;
}

.hex-hash,
.hex-field {
  font: 500 22px/1 var(--mono);
}

.hex-hash {
  color: var(--muted);
}

.hex-field {
  flex: 1;
  min-width: 0;
  padding: 0;
  background: transparent;
  border: 0;
  outline: 0;
  text-transform: uppercase;
}

.field-error {
  color: var(--danger);
  font-size: 13px;
  line-height: 1.4;
}

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

.preset {
  display: flex;
  align-items: center;
  gap: 8px;
  height: 36px;
  padding: 0 10px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 13px;
  text-align: left;
  cursor: pointer;
}

.preset:hover {
  border-color: var(--border-strong);
}

.preset[aria-pressed='true'] {
  border-color: var(--text);
}

.preset-dot {
  flex: none;
  width: 14px;
  height: 14px;
  border-radius: 4px;
  background: var(--c);
}

.facts {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 92px; /* 120px spacer з макета мінус gap панелі */
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

.facts div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}

.facts dt {
  color: var(--muted);
  font-size: 13px;
}

.facts dd {
  font: 400 12px var(--mono);
  text-align: right;
}

/* ---------- секції ---------- */

.section {
  display: flex;
  flex-direction: column;
  gap: 24px;
  padding: 40px 0;
  border-bottom: 1px solid var(--border);
  scroll-margin-top: var(--topbar-h);
}

#export {
  border-bottom: 0;
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
}

.section-head h2 {
  margin-top: 8px;
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.section-note {
  color: var(--muted);
  font-size: 13px;
}

.footer {
  color: var(--muted);
  font-size: 13px;
}

/* ---------- шкала ---------- */

.scales {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.scale-row {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 16px;
}

.scale-label {
  font-size: 13px;
  font-weight: 500;
}

.swatches {
  display: grid;
  grid-template-columns: repeat(11, minmax(0, 1fr));
  gap: 6px;
}

.swatch {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
  padding: 0;
  background: none;
  border: 0;
  border-radius: var(--radius);
  text-align: left;
  cursor: pointer;
}

.swatch-color {
  display: flex;
  align-items: flex-start;
  height: 88px;
  padding: 8px;
  border-radius: var(--radius);
  background: var(--c);
  box-shadow: inset 0 0 0 1px var(--stroke-swatch);
  transition: box-shadow 0.12s;
}

.swatch:hover .swatch-color {
  box-shadow: inset 0 0 0 1px var(--stroke-swatch-hover);
}

.swatch-tag {
  padding: 4px 6px;
  border-radius: 4px;
  background: var(--tag-bg);
  color: var(--text);
  font: 500 10px/1 var(--mono);
}

.swatch-step {
  font: 500 12px/1 var(--mono);
}

.swatch-hex {
  color: var(--muted);
  font: 400 11px/1 var(--mono);
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ---------- таблиця токенів ---------- */

.table,
.preview,
.export {
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.table-row {
  display: grid;
  grid-template-columns: minmax(110px, 0.9fr) 1fr 1fr;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border-bottom: 1px solid var(--border);
}

.table-row:last-child {
  border-bottom: 0;
}

.table-head {
  padding: 12px 16px;
  color: var(--muted);
  font: 400 12px var(--mono);
}

.token-name {
  font: 400 13px var(--mono);
}

.token-cell {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 2px 10px;
  min-width: 0;
  font-size: 13px;
}

.chip {
  flex: none;
  width: 20px;
  height: 20px;
  border-radius: 5px;
  background: var(--c);
  box-shadow: inset 0 0 0 1px var(--stroke-chip);
}

.token-hex {
  color: var(--muted);
  font: 400 12px var(--mono);
}

/* ---------- прев'ю ---------- */

.previews {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 380px), 1fr));
  gap: 16px;
  align-items: start;
}

.preview-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
  font-weight: 500;
}

.preview-score {
  color: var(--muted);
  font: 400 12px var(--mono);
}

.canvas {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 24px;
  background: var(--p-bg);
}

.pv-card {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 20px;
  background: var(--p-surface);
  border: 1px solid var(--p-border);
  border-radius: 12px;
}

.pv-card :focus-visible {
  outline-color: var(--p-text);
}

.pv-top,
.pv-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
}

.pv-top {
  justify-content: space-between;
}

.pv-kicker {
  color: var(--p-muted);
  font-size: 12px;
}

.pv-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--p-success);
  font-size: 12px;
  font-weight: 500;
}

.pv-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

.pv-title {
  color: var(--p-text);
  font-size: 18px;
  font-weight: 600;
}

.pv-desc {
  color: var(--p-muted);
  font-size: 14px;
  line-height: 1.5;
}

.pv-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.pv-label {
  color: var(--p-text);
  font-size: 13px;
  font-weight: 500;
}

.pv-input {
  width: 100%;
  height: 40px;
  padding: 0 12px;
  background: var(--p-surface);
  border: 1px solid var(--p-danger);
  border-radius: 8px;
  color: var(--p-text);
  font-size: 14px;
}

.pv-error {
  color: var(--p-danger);
  font-size: 13px;
}

.pv-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.pv-btn {
  height: 40px;
  padding: 0 12px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
}

.pv-btn-primary {
  background: var(--p-accent);
  color: var(--p-on-accent);
}

.pv-btn-primary:hover,
.pv-btn-hover {
  background: var(--p-accent-hover);
  color: var(--p-on-accent);
}

.pv-btn-outline {
  background: transparent;
  border-color: var(--p-border);
  color: var(--p-text);
}

.pv-foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  color: var(--p-muted);
  font-size: 12px;
}

.pairs {
  padding: 4px 0;
}

.pair {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 16px;
  border-top: 1px solid var(--border);
}

.pair:first-child {
  border-top: 0;
}

.pair-chip {
  display: grid;
  flex: none;
  place-items: center;
  width: 36px;
  height: 24px;
  border-radius: 5px;
  background: var(--chip-bg);
  color: var(--chip-fg);
  box-shadow: inset 0 0 0 1px var(--stroke-chip-soft);
  font-size: 12px;
  font-weight: 600;
}

.pair-text {
  display: flex;
  flex-wrap: wrap;
  gap: 0 6px;
  min-width: 0;
  font-size: 13px;
}

.pair-tokens {
  color: var(--muted);
}

.pair-ratio {
  margin-left: auto;
  font: 500 12px var(--mono);
  white-space: nowrap;
}

.badge {
  display: inline-block;
  padding: 4px 7px;
  border-radius: 4px;
  background: var(--success-bg);
  color: var(--success);
  font: 500 11px/1 var(--mono);
  white-space: nowrap;
}

.badge[data-pass='false'] {
  background: var(--danger-bg);
  color: var(--danger);
}

/* ---------- експорт ---------- */

.export-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 8px 8px 8px 12px;
  border-bottom: 1px solid var(--border);
}

.tabs {
  display: flex;
  gap: 4px;
  min-width: 0;
}

.tab {
  padding: 8px 12px;
  background: none;
  border: 0;
  border-radius: var(--radius);
  color: var(--muted);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
}

.tab[aria-selected='true'] {
  background: var(--bg);
  color: var(--text);
}

.tab:disabled {
  cursor: not-allowed;
}

.export-code {
  max-height: 440px;
  margin: 0;
  padding: 16px 20px;
  overflow: auto;
  color: var(--text-2);
  font: 400 12.5px/1.6 var(--mono);
}

/* ---------- тост ---------- */

.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  z-index: 20;
  padding: 10px 14px;
  border-radius: var(--radius);
  background: var(--accent);
  color: var(--on-accent);
  font-size: 13px;
  font-weight: 500;
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, 12px);
  transition: opacity 0.16s, transform 0.16s;
}

.toast.is-visible {
  opacity: 1;
  transform: translate(-50%, 0);
}

@media (prefers-reduced-motion: reduce) {
  .toast,
  .swatch-color {
    transition: none;
  }
}

/* ---------- адаптив ---------- */

@media (max-width: 1100px) {
  .layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .panel {
    border-right: 0;
    border-bottom: 1px solid var(--border);
  }

  .panel-inner {
    position: static;
    padding: 40px var(--gutter);
  }

  .facts {
    margin-top: 0;
  }
}

@media (max-width: 820px) {
  .scale-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 10px;
  }

  .swatches {
    grid-template-columns: repeat(6, minmax(0, 1fr));
    row-gap: 16px;
  }

  .swatch-color {
    height: 56px;
  }
}

@media (max-width: 640px) {
  :root {
    --gutter: 16px;
  }

  .topbar {
    gap: 16px;
  }

  .nav {
    display: none;
  }

  .panel-inner {
    padding: 32px var(--gutter);
  }

  h1 {
    font-size: 28px;
  }

  .section {
    padding: 32px 0;
  }

  .section-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .table-row {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }

  .table-row .token-name {
    grid-column: 1 / -1;
  }

  .table-head .th-token {
    display: none;
  }

  .token-hex {
    flex-basis: 100%;
  }

  .canvas {
    padding: 16px;
  }

  .pv-card {
    padding: 16px;
  }

  .pair {
    padding: 8px 12px;
    gap: 10px;
  }

  .export-code {
    padding: 14px 16px;
  }

  .export-bar {
    flex-wrap: wrap;
    gap: 8px;
    padding: 8px;
  }

  .tabs {
    gap: 0;
    min-width: auto;
  }

  .tab {
    padding: 8px;
  }

  .export-bar .btn {
    margin-left: auto;
    padding: 0 10px;
  }
}