/*
 * Демо-витрина в визуальном языке Material 3: цветовые роли, формы и типографика
 * задаются токенами в :root, компоненты читают только токены.
 */

/* Тёмная тема — основная для витрины. */
:root {
  color-scheme: dark;
  --md-primary: #a8c7fa;
  --md-on-primary: #062e6f;
  --md-primary-container: #0842a0;
  --md-on-primary-container: #d3e3fd;
  --md-secondary-container: #37393b;
  --md-on-secondary-container: #e3e3e3;
  --md-surface: #0f1115;
  --md-surface-container-low: #16181d;
  --md-surface-container: #1b1d22;
  --md-surface-container-high: #22252b;
  --md-surface-container-highest: #2c2f36;
  --md-on-surface: #e3e3e3;
  --md-on-surface-variant: #a9acb4;
  --md-outline: #8e918f;
  --md-outline-variant: #353841;
  --md-shadow: 0 1px 3px rgba(0, 0, 0, .5), 0 4px 12px rgba(0, 0, 0, .25);
  --md-shadow-2: 0 6px 24px rgba(0, 0, 0, .45);
  --preview-bg: radial-gradient(120% 100% at 50% 0%, #2a2e37 0%, #1a1c22 70%);
  --shape-xl: 28px;
  --shape-l: 16px;
  --shape-m: 12px;
  --shape-full: 999px;
  --font-brand: "Google Sans Flex", "Google Sans", "Roboto", system-ui, sans-serif;
  --font-plain: "Roboto", system-ui, sans-serif;
  --gutter: max(clamp(16px, 4vw, 40px), env(safe-area-inset-left, 0px), env(safe-area-inset-right, 0px));
  /* Вырез сверху и, в приложении, его кнопки в левом верхнем углу (`--arxr-app-bar`; в браузере не задана). */
  --safe-top: calc(env(safe-area-inset-top, 0px) + var(--arxr-app-bar, 0px));
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: calc(80px + var(--safe-top)); }

body {
  margin: 0;
  background: var(--md-surface);
  color: var(--md-on-surface);
  font: 400 16px/1.5 var(--font-plain);
  -webkit-font-smoothing: antialiased;
}

a { color: var(--md-primary); }

.d-none { display: none !important; }
.muted { color: var(--md-on-surface-variant); }

.material-symbols-rounded {
  font-size: 20px;
  line-height: 1;
  font-variation-settings: "FILL" 0, "wght" 400, "GRAD" 0, "opsz" 24;
}

/* Типографика */
.display {
  font: 500 clamp(36px, 5.2vw, 60px)/1.08 var(--font-brand);
  letter-spacing: -0.02em;
  margin: 8px 0 20px;
}
.headline { font: 500 clamp(26px, 3vw, 34px)/1.2 var(--font-brand); margin: 0 0 8px; letter-spacing: -0.01em; }
.lead { font-size: 18px; color: var(--md-on-surface-variant); max-width: 60ch; }
.eyebrow {
  display: inline-block;
  margin: 0;
  padding: 6px 14px;
  border-radius: var(--shape-full);
  background: var(--md-primary-container);
  color: var(--md-on-primary-container);
  font: 500 14px/1.4 var(--font-brand);
}

/* Кнопки */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 40px;
  padding: 0 24px;
  border: 0;
  border-radius: var(--shape-full);
  font: 500 14px/1 var(--font-brand);
  letter-spacing: .01em;
  text-decoration: none;
  cursor: pointer;
  transition: box-shadow .2s, background-color .2s, transform .1s;
  white-space: nowrap;
}
.btn:active { transform: scale(.98); }
.btn--large { height: 52px; padding: 0 28px; font-size: 16px; }
.btn--filled { background: var(--md-primary); color: var(--md-on-primary); }
.btn--filled:hover { box-shadow: var(--md-shadow); }
.btn--tonal { background: var(--md-secondary-container); color: var(--md-on-secondary-container); }
.btn--tonal:hover { box-shadow: var(--md-shadow); }
.btn--text { background: transparent; color: var(--md-primary); padding: 0 12px; }
.btn--text:hover { background: color-mix(in srgb, var(--md-primary) 8%, transparent); }
.btn--outlined { background: transparent; color: var(--md-primary); border: 1px solid var(--md-outline); }

.icon-btn {
  display: inline-grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border: 0;
  border-radius: 50%;
  background: transparent;
  color: var(--md-on-surface-variant);
  cursor: pointer;
}
.icon-btn:hover { background: color-mix(in srgb, var(--md-on-surface) 8%, transparent); }

/* Верхняя панель */
.top-bar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: calc(12px + var(--safe-top)) var(--gutter) 12px;
  background: color-mix(in srgb, var(--md-surface) 88%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid color-mix(in srgb, var(--md-outline-variant) 50%, transparent);
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--md-on-surface); }
.brand__logo {
  height: 32px;
  width: auto;
  padding: 3px;
  border-radius: var(--shape-m);
  background: #fff; /* тёмный знак читается только на светлой подложке */
}
.brand__name { font: 700 18px/1 var(--font-plain); letter-spacing: 1px; }
.top-bar__nav { display: flex; align-items: center; gap: 4px; }

main { padding: 0 var(--gutter); max-width: 1320px; margin: 0 auto; }

/* Hero */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  gap: clamp(24px, 5vw, 64px);
  align-items: center;
  padding: clamp(32px, 6vw, 80px) 0 clamp(24px, 4vw, 48px);
}
.hero__actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 28px 0 32px; }
.stats { display: flex; flex-wrap: wrap; gap: 12px; list-style: none; padding: 0; margin: 0; }
.stats li {
  min-width: 120px;
  padding: 14px 18px;
  border-radius: var(--shape-l);
  background: var(--md-surface-container);
}
.stats b { display: block; font: 500 28px/1.1 var(--font-brand); color: var(--md-primary); }
.stats span { font-size: 13px; color: var(--md-on-surface-variant); }

.hero__visual {
  position: relative;
  border-radius: var(--shape-xl);
  padding: 16px;
  background:
    radial-gradient(120% 90% at 0% 0%, rgba(66, 133, 244, .28), transparent 60%),
    radial-gradient(90% 90% at 100% 100%, rgba(217, 101, 112, .22), transparent 60%),
    var(--md-surface-container-low);
}
.display .accent {
  background: linear-gradient(90deg, #4285f4, #9b72cb, #d96570);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.mosaic { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.mosaic img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: contain;
  border-radius: var(--shape-l);
  background: var(--preview-bg);
  box-shadow: var(--md-shadow);
  animation: rise .6s both;
}
.mosaic img:nth-child(3n + 2) { transform: translateY(18px); }
@keyframes rise { from { opacity: 0; translate: 0 12px; } to { opacity: 1; translate: 0 0; } }

/* Возможности */
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; padding: 24px 0 8px; }
.feature {
  padding: 24px;
  border-radius: var(--shape-xl);
  background: var(--md-surface-container-low);
  border: 1px solid color-mix(in srgb, var(--md-outline-variant) 60%, transparent);
}
.feature h2 { font: 500 22px/1.25 var(--font-brand); margin: 16px 0 8px; }
.feature p { margin: 0; color: var(--md-on-surface-variant); }
.feature__icon {
  display: inline-grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: var(--shape-l);
  background: var(--md-primary-container);
  color: var(--md-on-primary-container);
  font-size: 26px;
}

.audience { padding: 40px 0 8px; }

/* Чипы */
.chips-wrap { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 32px;
  padding: 0 14px;
  border: 1px solid var(--md-outline-variant);
  border-radius: 8px;
  background: transparent;
  color: var(--md-on-surface-variant);
  font: 500 14px/1 var(--font-brand);
  white-space: nowrap;
  cursor: pointer;
  transition: background-color .15s, border-color .15s;
}
.chip:hover { background: color-mix(in srgb, var(--md-on-surface) 6%, transparent); }
.chip[aria-pressed="true"] {
  background: var(--md-secondary-container);
  border-color: transparent;
  color: var(--md-on-secondary-container);
}
.chip[aria-pressed="true"]::before {
  content: "check";
  font-family: "Material Symbols Rounded";
  font-size: 18px;
  margin-left: -4px;
}
.chip__count { color: var(--md-on-surface-variant); font-weight: 400; }
.chip--static { cursor: default; height: 40px; padding: 0 16px; }
.chip--static:hover { background: transparent; }
.chip--static .material-symbols-rounded { color: var(--md-primary); }

/* Каталог */
.catalog { padding: 48px 0 24px; }

.style-section__more { display: flex; margin: 16px auto 0; }

/* Переключатель каталогов: сегментированная кнопка Material 3 */
.segmented {
  display: inline-flex;
  max-width: 100%;
  margin: 20px 0 0;
  overflow-x: auto;
  border: 1px solid var(--md-outline);
  border-radius: var(--shape-full);
  scrollbar-width: none;
}
.segmented::-webkit-scrollbar { display: none; }
.segment {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 40px;
  padding: 0 20px;
  border: 0;
  border-left: 1px solid var(--md-outline);
  background: transparent;
  color: var(--md-on-surface);
  font: 500 14px/1 var(--font-brand);
  white-space: nowrap;
  cursor: pointer;
  transition: background-color .15s;
}
.segment:first-child { border-left: 0; }
.segment:hover { background: color-mix(in srgb, var(--md-on-surface) 6%, transparent); }
.segment[aria-checked="true"] {
  background: var(--md-secondary-container);
  color: var(--md-on-secondary-container);
}
.segment[aria-checked="true"]::before {
  content: "check";
  font-family: "Material Symbols Rounded";
  font-size: 18px;
  margin-left: -4px;
}
.segment__count { font-weight: 400; opacity: .75; }
.catalog__head { margin-bottom: 16px; }
.catalog__head .muted { margin: 0; }

.search-bar {
  position: sticky;
  top: calc(72px + var(--safe-top));
  z-index: 5;
  display: flex;
  align-items: center;
  gap: 8px;
  height: 56px;
  max-width: 720px;
  padding: 0 8px 0 20px;
  margin: 20px 0 12px;
  border-radius: var(--shape-full);
  background: var(--md-surface-container-high);
  box-shadow: var(--md-shadow);
  color: var(--md-on-surface-variant);
}
.search-bar input {
  flex: 1;
  min-width: 0;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--md-on-surface);
  font: 400 16px/1 var(--font-plain);
}
.search-bar input::-webkit-search-cancel-button { display: none; }

.filter-row {
  display: flex;
  align-items: center;
  gap: 8px;
  overflow-x: auto;
  padding: 6px 0;
  scrollbar-width: none;
}
.filter-row::-webkit-scrollbar { display: none; }
.filter-row__label {
  flex: none;
  margin-right: 4px;
  font: 500 12px/1 var(--font-brand);
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--md-on-surface-variant);
}
.results-count { margin: 8px 0 16px; font-size: 14px; }

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}

.model-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border-radius: var(--shape-l);
  background: var(--md-surface-container-low);
  border: 1px solid color-mix(in srgb, var(--md-outline-variant) 60%, transparent);
  transition: box-shadow .2s, transform .2s;
}
.model-card:hover { box-shadow: var(--md-shadow-2); transform: translateY(-2px); }

.model-card__media {
  position: relative;
  aspect-ratio: 1;
  background: var(--preview-bg);
  cursor: pointer;
}
.model-card__media img { width: 100%; height: 100%; object-fit: contain; padding: 8px; }
.model-card__media iframe { width: 100%; height: 100%; border: 0; display: block; }
.model-card__badge {
  position: absolute;
  top: 10px;
  left: 10px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  height: 26px;
  padding: 0 10px;
  border-radius: var(--shape-full);
  background: color-mix(in srgb, var(--md-surface) 85%, transparent);
  backdrop-filter: blur(6px);
  font: 500 12px/1 var(--font-brand);
  color: var(--md-on-surface-variant);
}
.model-card__badge .material-symbols-rounded { font-size: 16px; }

.model-card__body { display: flex; flex-direction: column; gap: 4px; padding: 14px 16px 16px; flex: 1; }
.model-card__title {
  margin: 0;
  font: 500 16px/1.3 var(--font-brand);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.model-card__meta { margin: 0; font-size: 13px; color: var(--md-on-surface-variant); }
/* Автор · источник · лицензия (CC BY требует их у модели); длинная строка не раздвигает карточку. */
.model-card__credit { margin: 0; font-size: 12px; line-height: 1.35; color: var(--md-on-surface-variant); overflow-wrap: anywhere; }
.model-card__credit a { color: inherit; }
.model-card__actions { display: flex; gap: 8px; margin-top: auto; padding-top: 12px; }
.model-card__actions .btn { flex: 1; height: 36px; padding: 0 12px; }

.catalog-error {
  padding: 16px 20px;
  border-radius: var(--shape-l);
  background: #601410;
  color: #ffdad6;
}

/* Раздел каталога — один стиль. */
.style-section { margin: 8px 0 40px; }
.style-section__head { display: flex; align-items: baseline; flex-wrap: wrap; gap: 4px 12px; margin: 0 0 14px; }
.style-section__title { margin: 0; font: 500 24px/1.2 var(--font-brand); }
.style-section__meta { font-size: 14px; color: var(--md-on-surface-variant); }
.style-section__xr { margin-left: auto; }

/* Контакты */
.contact { padding: 56px 0 24px; }
.contact__card {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: 32px;
  align-items: center;
  padding: clamp(24px, 4vw, 48px);
  border-radius: var(--shape-xl);
  background: var(--md-primary-container);
  color: var(--md-on-primary-container);
}
.contact__card .lead { color: inherit; opacity: .85; }
.contact__links { display: flex; flex-direction: column; gap: 10px; }
.contact__links .btn--text { color: var(--md-on-primary-container); }
.lead-form { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.lead-form input {
  flex: 1 1 220px;
  height: 48px;
  padding: 0 16px;
  border: 1px solid var(--md-outline);
  border-radius: var(--shape-m);
  background: var(--md-surface);
  color: var(--md-on-surface);
  font: inherit;
}
.lead-form input.is-invalid { border-color: #ffb4ab; }
.lead-form .btn { height: 48px; }
.form-message { width: 100%; margin: 4px 0 0; font-size: 14px; }

.footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px;
  max-width: 1320px;
  margin: 24px auto 0;
  padding: 24px var(--gutter) 40px;
  font-size: 14px;
  border-top: 1px solid var(--md-outline-variant);
}
.footer p { margin: 0; }

.fab {
  position: fixed;
  right: calc(20px + env(safe-area-inset-right, 0px));
  bottom: calc(20px + env(safe-area-inset-bottom, 0px));
  z-index: 20;
  display: grid;
  place-items: center;
  width: 56px;
  height: 56px;
  border: 0;
  border-radius: var(--shape-l);
  background: var(--md-primary-container);
  color: var(--md-on-primary-container);
  box-shadow: var(--md-shadow-2);
  cursor: pointer;
}
.fab .material-symbols-rounded { font-size: 24px; }

/* Лоадер поверх темы */
.loader-wrapper { background-color: var(--md-surface); opacity: .85; }
.loader { border-color: var(--md-surface-container-highest); border-top-color: var(--md-primary); border-width: 6px; width: 56px; height: 56px; margin-top: 40vh; }

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; }
  .hero__visual { order: -1; }
  .features { grid-template-columns: 1fr; }
  .contact__card { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  .hide-sm { display: none; }
  .brand__name { font-size: 17px; }
  .search-bar { top: calc(64px + var(--safe-top)); }
  .card-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .model-card__body { padding: 10px 12px 12px; }
  .model-card__title { font-size: 14px; }
  .model-card__actions { flex-direction: column; }
  .stats li { min-width: 0; flex: 1; }
  .btn--large { width: 100%; }
}