/* Все цвета страницы — роли текущей схемы из tokens.css; app.js переписывает
   их при каждой смене цвета, поэтому страница сама служит превью. */

:root {
  --font: "Roboto Flex", Roboto, "Segoe UI Variable Text", "Segoe UI", system-ui, -apple-system, sans-serif;
  --mono: "JetBrains Mono", "Cascadia Mono", "Roboto Mono", ui-monospace, Consolas, monospace;
  --seed: #0b57d0;
  --gutter: clamp(16px, 3vw, 32px);
}

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

body {
  margin: 0;
  background: var(--md-surface);
  color: var(--md-on-surface);
  font: 400 16px/1.5 var(--font);
  -webkit-font-smoothing: antialiased;
  transition: background-color .25s ease, color .25s ease;
}

a { color: var(--md-primary); }
button, input { font: inherit; color: inherit; }
svg { display: block; }

code {
  font-family: var(--mono);
  font-size: .88em;
  padding: .08em .35em;
  border-radius: 6px;
  background: var(--md-surface-container-highest);
}

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

/* Шапка */

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  max-width: 1440px;
  margin: 0 auto;
  padding: 14px var(--gutter);
}

.wordmark {
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -.01em;
  color: var(--md-on-surface);
  text-decoration: none;
}
.wordmark span { color: var(--md-primary); }

.topbar-link {
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  color: var(--md-on-surface-variant);
}
.topbar-link:hover { color: var(--md-primary); }

/* Раскладка */

.layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
  max-width: 1440px;
  margin: 0 auto;
  padding-inline: var(--gutter);
  padding-block: 4px 48px;
}

@media (min-width: 1040px) {
  .layout { grid-template-columns: 360px minmax(0, 1fr); align-items: start; }
  .controls {
    position: sticky;
    top: 16px;
    max-height: calc(100vh - 32px);
    overflow-y: auto;
    scrollbar-width: thin;
  }
}

.content { display: grid; grid-template-columns: minmax(0, 1fr); gap: 40px; min-width: 0; }
.panel { min-width: 0; }

/* Панель настроек */

.controls {
  background: var(--md-surface-container-low);
  border-radius: 28px;
  padding: 24px;
  transition: background-color .25s ease;
}

h1 {
  margin: 0 0 8px;
  font-size: 28px;
  line-height: 36px;
  font-weight: 600;
  letter-spacing: -.015em;
  text-wrap: balance;
}

.lede {
  margin: 0;
  font-size: 15px;
  line-height: 22px;
  color: var(--md-on-surface-variant);
}

.group {
  margin: 20px 0 0;
  padding: 18px 0 0;
  border: 0;
  border-top: 1px solid var(--md-outline-variant);
  min-width: 0;
}

/* legend у fieldset браузер рисует прямо на рамке; float уводит его под линию,
   как у заголовка обычной секции. */
.group > legend { float: left; width: 100%; }
.group > legend + * { clear: both; }

.group-title {
  margin: 0 0 12px;
  padding: 0;
  font-size: 14px;
  line-height: 20px;
  font-weight: 500;
  color: var(--md-on-surface-variant);
}

.seed { display: flex; align-items: center; gap: 16px; }
.seed-shape { width: 72px; height: 72px; flex: none; }
.seed-shape path { fill: var(--seed); transition: fill .25s ease; }
.seed-fields { min-width: 0; }
.seed-row { display: flex; align-items: center; gap: 8px; }

.swatch-input {
  position: relative;
  width: 40px;
  height: 40px;
  flex: none;
  border-radius: 12px;
  background: var(--seed);
  box-shadow: inset 0 0 0 1px var(--md-outline-variant);
  cursor: pointer;
}
.swatch-input input { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0; cursor: pointer; }
.swatch-input:has(input:focus-visible) { outline: 2px solid var(--md-primary); outline-offset: 2px; }

.hex-input {
  width: 11ch;
  height: 40px;
  padding: 0 10px;
  border: 1px solid var(--md-outline);
  border-radius: 12px;
  background: transparent;
  font: 500 15px/1 var(--mono);
  text-transform: uppercase;
}
.hex-input:focus { outline: 2px solid var(--md-primary); outline-offset: -1px; border-color: transparent; }
.hex-input[aria-invalid="true"] { border-color: var(--md-error); color: var(--md-error); }

.hct {
  margin: 8px 0 0;
  font: 400 13px/1.4 var(--mono);
  font-variant-numeric: tabular-nums;
  color: var(--md-on-surface-variant);
}

.icon-button {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  flex: none;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--md-on-surface-variant);
  cursor: pointer;
}
.icon-button svg { width: 22px; height: 22px; fill: currentColor; }
.icon-button:hover { background: color-mix(in srgb, var(--md-on-surface-variant) 8%, transparent); }

/* Кнопки Material 3 */

.button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 40px;
  padding: 0 20px 0 16px;
  border: 0;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: .01em;
  cursor: pointer;
}
.button svg { width: 18px; height: 18px; fill: currentColor; }
.button.outlined { background: transparent; color: var(--md-primary); box-shadow: inset 0 0 0 1px var(--md-outline); }
.button.outlined:hover { background: color-mix(in srgb, var(--md-primary) 8%, transparent); }
.button.tonal { padding: 0 16px; background: var(--md-secondary-container); color: var(--md-on-secondary-container); }
.button.tonal:hover { background: color-mix(in srgb, var(--md-on-secondary-container) 8%, var(--md-secondary-container)); }

.from-image {
  margin-top: 16px;
  padding: 12px;
  margin-inline: -12px;
  border: 1px dashed transparent;
  border-radius: 16px;
  transition: background-color .15s ease, border-color .15s ease;
}
.from-image.dragging {
  border-color: var(--md-primary);
  background: color-mix(in srgb, var(--md-primary) 8%, transparent);
}

.hint { margin: 8px 0 0; font-size: 13px; line-height: 18px; color: var(--md-on-surface-variant); }

.image-seeds { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.image-seeds p { width: 100%; margin: 0; font-size: 13px; color: var(--md-on-surface-variant); }

/* Чип-фильтр: высота 32, скругление 8 — как в спецификации */
.image-seed {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 32px;
  padding: 0 12px 0 4px;
  border: 1px solid var(--md-outline-variant);
  border-radius: 8px;
  background: transparent;
  color: var(--md-on-surface-variant);
  font: 500 13px/1 var(--mono);
  cursor: pointer;
}
.image-seed i { width: 24px; height: 24px; border-radius: 6px; background: var(--c); }
.image-seed[aria-pressed="true"] {
  border-color: transparent;
  background: var(--md-secondary-container);
  color: var(--md-on-secondary-container);
}

/* Список вариантов — радиокнопки */

.variants { display: grid; gap: 2px; }

.variant {
  display: grid;
  grid-template-columns: 20px minmax(0, 1fr);
  column-gap: 12px;
  padding: 10px 12px;
  margin-inline: -12px;
  border-radius: 12px;
  cursor: pointer;
}
.variant:hover { background: color-mix(in srgb, var(--md-on-surface) 6%, transparent); }
.variant:has(input:checked) { background: var(--md-secondary-container); color: var(--md-on-secondary-container); }
.variant:has(input:focus-visible) { outline: 2px solid var(--md-primary); outline-offset: -2px; }

.variant input {
  appearance: none;
  display: grid;
  place-items: center;
  width: 20px;
  height: 20px;
  margin: 1px 0 0;
  border: 2px solid var(--md-on-surface-variant);
  border-radius: 50%;
}
.variant input:checked { border-color: var(--md-primary); }
.variant input:checked::after { content: ""; width: 10px; height: 10px; border-radius: 50%; background: var(--md-primary); }
.variant input:focus-visible { outline: none; }

.variant b { display: block; font: 500 14px/20px var(--mono); }
.variant span { display: block; font-size: 13px; line-height: 18px; color: var(--md-on-surface-variant); }
.variant:has(input:checked) span { color: inherit; opacity: .78; }

/* Сегментированная кнопка */

.segmented {
  display: flex;
  height: 40px;
  border: 1px solid var(--md-outline);
  border-radius: 999px;
  overflow: hidden;
}
.segmented label {
  position: relative;
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
}
.segmented label + label { border-left: 1px solid var(--md-outline); }
.segmented label:hover { background: color-mix(in srgb, var(--md-on-surface) 6%, transparent); }
.segmented input { position: absolute; opacity: 0; pointer-events: none; }
.segmented svg { display: none; width: 16px; height: 16px; fill: currentColor; }
.segmented label:has(input:checked) { background: var(--md-secondary-container); color: var(--md-on-secondary-container); }
.segmented label:has(input:checked) svg { display: block; }
.segmented label:has(input:focus-visible) { outline: 2px solid var(--md-primary); outline-offset: -3px; }

/* Разделы */

.panel-head h2 { margin: 0 0 6px; font-size: 22px; line-height: 28px; font-weight: 600; letter-spacing: -.01em; }
.panel-head p { margin: 0; max-width: 70ch; font-size: 15px; line-height: 22px; color: var(--md-on-surface-variant); }

.subhead { margin: 24px 0 10px; font-size: 14px; line-height: 20px; font-weight: 500; }
.subhead span { margin-left: 6px; font-weight: 400; color: var(--md-on-surface-variant); }

/* Плитки ролей */

.tiles { display: grid; gap: 8px; }
.tiles.accents { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.tiles.fixed { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.stack, .row {
  display: grid;
  border-radius: 16px;
  overflow: hidden;
  outline: 1px solid var(--md-outline-variant);
  outline-offset: -1px;
}
.row { grid-template-columns: repeat(var(--n), minmax(0, 1fr)); }

.tile {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 8px;
  min-height: 60px;
  padding: 10px 12px;
  border: 0;
  text-align: left;
  background: var(--bg);
  color: var(--fg);
  cursor: pointer;
  transition: background-color .25s ease, color .25s ease;
}
.tile.big { min-height: 96px; }
.tile:focus-visible { position: relative; z-index: 1; outline: 3px solid var(--md-primary); outline-offset: -3px; }

.tile .role { font: 500 13px/1.3 var(--mono); overflow-wrap: anywhere; }
.tile .meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 2px 8px;
  font: 400 12px/1.3 var(--mono);
  font-variant-numeric: tabular-nums;
  opacity: .88;
}

@media (max-width: 760px) {
  .tiles.accents, .tiles.fixed { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .row { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

/* Тональные полосы */

.strips { overflow-x: auto; padding-bottom: 4px; margin-top: 16px; }
.strips-inner { min-width: 620px; }
.strip { margin-bottom: 14px; }
.strip-label {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 6px;
  font: 500 13px/1.3 var(--mono);
  color: var(--md-on-surface-variant);
}
.strip-cells {
  display: grid;
  grid-template-columns: repeat(18, minmax(0, 1fr));
  height: 48px;
  border-radius: 12px;
  overflow: hidden;
}
.cell {
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding: 0 0 7px;
  border: 0;
  background: var(--bg);
  color: var(--fg);
  font: 500 11px/1 var(--mono);
  cursor: pointer;
}
@media (max-width: 760px) {
  .strips-inner { min-width: 0; }
  .strip-cells { grid-template-columns: repeat(14, minmax(0, 1fr)); }
  .cell.minor { display: none; }
  .code pre { padding-top: 56px; }
}

.cell:focus-visible { position: relative; z-index: 1; outline: 3px solid var(--md-primary); outline-offset: -3px; }

/* Превью: два телефона со своими схемами */

.phones { display: flex; flex-wrap: wrap; gap: 24px; margin-top: 16px; }
.phone-wrap { display: grid; gap: 8px; }
.phone-caption { font-size: 13px; color: var(--md-on-surface-variant); }

.phone {
  position: relative;
  width: 320px;
  max-width: 100%;
  overflow: hidden;
  border-radius: 32px;
  background: var(--p-surface);
  color: var(--p-on-surface);
  box-shadow: 0 0 0 1px var(--md-outline-variant);
  font-size: 14px;
  line-height: 20px;
}
.phone svg { width: 24px; height: 24px; fill: currentColor; }

.p-status { display: flex; justify-content: space-between; padding: 12px 24px 4px; font-size: 13px; font-weight: 500; }
.p-appbar { display: flex; align-items: center; gap: 12px; padding: 8px 16px; }
.p-appbar h4 { flex: 1; margin: 0; font-size: 22px; line-height: 28px; font-weight: 400; }
.p-avatar {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  flex: none;
  border-radius: 50%;
  background: var(--p-primary-container);
  color: var(--p-on-primary-container);
  font-weight: 500;
}
.p-avatar.t { background: var(--p-tertiary-container); color: var(--p-on-tertiary-container); }
.p-avatar.s { background: var(--p-secondary-container); color: var(--p-on-secondary-container); }

.p-search {
  display: flex;
  align-items: center;
  gap: 12px;
  height: 48px;
  margin: 4px 16px 8px;
  padding: 0 16px;
  border-radius: 999px;
  background: var(--p-surface-container-high);
  color: var(--p-on-surface-variant);
}

.p-chips { display: flex; gap: 8px; padding: 4px 16px 8px; overflow: hidden; }
.p-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 32px;
  padding: 0 14px;
  border: 1px solid var(--p-outline-variant);
  border-radius: 8px;
  color: var(--p-on-surface-variant);
  font-size: 13px;
  font-weight: 500;
  white-space: nowrap;
}
.p-chip svg { width: 18px; height: 18px; }
.p-chip.on { padding-left: 8px; border-color: transparent; background: var(--p-secondary-container); color: var(--p-on-secondary-container); }

.p-item { display: flex; align-items: center; gap: 14px; padding: 10px 16px; }
.p-item div { flex: 1; min-width: 0; }
.p-item b { display: block; font-weight: 500; }
.p-item div > span { display: block; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; color: var(--p-on-surface-variant); }
.p-item time { align-self: flex-start; font-size: 12px; color: var(--p-on-surface-variant); }

.p-card { margin: 8px 16px; padding: 16px; border-radius: 12px; background: var(--p-surface-container-highest); }
.p-card b { display: block; font-size: 16px; line-height: 24px; font-weight: 500; }
.p-card p { margin: 4px 0 14px; color: var(--p-on-surface-variant); }
.p-actions { display: flex; justify-content: flex-end; gap: 8px; }
.p-btn { display: inline-flex; align-items: center; height: 40px; padding: 0 20px; border-radius: 999px; font-weight: 500; }
.p-btn.filled { background: var(--p-primary); color: var(--p-on-primary); }
.p-btn.outline { box-shadow: inset 0 0 0 1px var(--p-outline); color: var(--p-primary); }

.p-setting { display: flex; align-items: center; justify-content: space-between; padding: 12px 16px; }
.p-switch { position: relative; width: 52px; height: 32px; border-radius: 999px; background: var(--p-primary); }
.p-switch i {
  position: absolute;
  top: 4px;
  right: 4px;
  display: grid;
  place-items: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--p-on-primary);
  color: var(--p-on-primary-container);
}
.p-switch i svg { width: 16px; height: 16px; }
.p-switch.off { background: var(--p-surface-container-highest); box-shadow: inset 0 0 0 2px var(--p-outline); }
.p-switch.off i { top: 8px; right: auto; left: 8px; width: 16px; height: 16px; background: var(--p-outline); }

.p-space { height: 72px; }

.p-fab {
  position: absolute;
  right: 16px;
  bottom: 96px;
  display: grid;
  place-items: center;
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: var(--p-primary-container);
  color: var(--p-on-primary-container);
  box-shadow: 0 3px 6px color-mix(in srgb, var(--p-shadow) 30%, transparent);
}

.p-nav { display: flex; justify-content: space-around; padding: 12px 8px 16px; margin-top: 12px; background: var(--p-surface-container); }
.p-nav div { display: grid; justify-items: center; gap: 4px; font-size: 12px; font-weight: 500; color: var(--p-on-surface-variant); }
.p-nav i { display: grid; place-items: center; width: 64px; height: 32px; border-radius: 999px; }
.p-nav .on { color: var(--p-on-surface); }
.p-nav .on i { background: var(--p-secondary-container); color: var(--p-on-secondary-container); }

/* Экспорт */

.tabs { display: flex; gap: 4px; margin-top: 16px; border-bottom: 1px solid var(--md-outline-variant); overflow-x: auto; }
.tabs button {
  position: relative;
  padding: 12px 16px;
  border: 0;
  background: none;
  color: var(--md-on-surface-variant);
  font-size: 14px;
  font-weight: 500;
  white-space: nowrap;
  cursor: pointer;
}
.tabs button:hover { color: var(--md-on-surface); }
.tabs button[aria-selected="true"] { color: var(--md-primary); }
.tabs button[aria-selected="true"]::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: -1px;
  height: 3px;
  border-radius: 3px 3px 0 0;
  background: var(--md-primary);
}

.code { position: relative; margin-top: 12px; border-radius: 16px; background: var(--md-surface-container-high); }
.code pre {
  margin: 0;
  max-height: 460px;
  padding: 16px 20px;
  overflow: auto;
  font: 400 13px/1.6 var(--mono);
  tab-size: 2;
}
.code pre code { padding: 0; border-radius: 0; background: none; font-size: inherit; }
.copy-code { position: absolute; top: 10px; right: 10px; height: 32px; }

/* Подвал */

.about {
  max-width: 72ch;
  padding-top: 24px;
  border-top: 1px solid var(--md-outline-variant);
  font-size: 15px;
  line-height: 23px;
  color: var(--md-on-surface-variant);
}
.about h2 { margin: 0 0 8px; font-size: 18px; line-height: 24px; font-weight: 600; color: var(--md-on-surface); }
.about p { margin: 0 0 12px; }
.sign { color: var(--md-on-surface); font-weight: 500; }

/* Снекбар: inverseSurface и скругление 4 — по спецификации */

.snackbar {
  position: fixed;
  left: 50%;
  bottom: 24px;
  z-index: 10;
  max-width: calc(100vw - 32px);
  padding: 14px 16px;
  border-radius: 4px;
  background: var(--md-inverse-surface);
  color: var(--md-on-inverse-surface);
  font-size: 14px;
  box-shadow: 0 4px 12px rgb(0 0 0 / .2);
  transform: translate(-50%, 160%);
  transition: transform .2s ease;
}
.snackbar.show { transform: translate(-50%, 0); }

.noscript { margin: 16px var(--gutter); padding: 16px; border-radius: 12px; background: var(--md-error-container); color: var(--md-on-error-container); }

/* До первой отрисовки переходы выключены: иначе каждая загрузка перетекала бы
   из цвета по умолчанию в свой, и это выглядело бы как сбой. */
:root:not(.ready), :root:not(.ready) * { transition: none !important; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; }
}