/* Skidkin — рекламный сайт.
 * Дизайн-токены зеркалят приложение (app/lib/core/theme/, раздел 9 AGENTS.md):
 * тёмная тема — основная (стекло и градиенты проектировались под неё),
 * светлая включается через prefers-color-scheme.
 */

@font-face {
  font-family: "Inter";
  src: url("../fonts/Inter-Variable.ttf") format("truetype");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

/* ---------- Токены: тёмная тема (основная) ---------- */

:root {
  color-scheme: dark;

  --bg: #131316;
  --surface: #1c1c1f;
  --surface-low: #1f1f23;
  --surface-medium: #242428;
  --surface-high: #2c2c31;
  --surface-highest: #2c2c31;
  --on-surface: #e6e1e5;
  --on-surface-variant: #cac4d0;

  --primary: #d0bcff;
  --on-primary: #381e72;

  --accent: #ffd666;
  --on-accent: #3e2e00;

  --success: #a5d6a7;
  --warning: #ffcc80;
  --info: #90caf9;
  --error: #f2b8b5;

  --outline: rgba(230, 225, 229, 0.14);
  --glass-bg: rgba(255, 255, 255, 0.1);
  --glass-border: rgba(255, 255, 255, 0.22);
  --header-bg: rgba(19, 19, 22, 0.78);
  --shadow-card: 0 12px 32px rgba(0, 0, 0, 0.45);
  --shadow-pop: 0 16px 48px rgba(0, 0, 0, 0.55);

  /* Градиенты дисконтных карт (пары с contentColor, контраст ≥ 4.5:1) */
  --grad-violet: linear-gradient(135deg, #5a70cf 0%, #764ba2 100%);
  --grad-sunset: linear-gradient(135deg, #c35252 0%, #b06239 100%);
  --grad-mint: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
  --grad-blue: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
  --grad-dark: linear-gradient(135deg, #434343 0%, #000000 100%);
  --card-text-light: #ffffff;
  --card-text-dark: #07281b;
  --card-text-dark-blue: #062c33;

  /* Радиусы из шкалы AppDesignTokens */
  --radius-large: 16px;
  --radius-chip: 12px;
  --radius-pill: 20px;
  --radius-dialog: 28px;

  --card-aspect: 1.586;

  --container: 1120px;
}

/* ---------- Токены: светлая тема (авто) ---------- */

@media (prefers-color-scheme: light) {
  :root {
    color-scheme: light;

    --bg: #f7f7f9;
    --surface: #fcfcfd;
    --surface-low: #f1f1f4;
    --surface-medium: #e9e9ec;
    --surface-high: #ececef;
    --surface-highest: #e4e4e7;
    --on-surface: #1c1b1f;
    --on-surface-variant: #49454f;

    --primary: #6750a4;
    --on-primary: #ffffff;

    --accent: #ffb000;
    --on-accent: #3e2e00;

    --success: #2e7d32;
    --warning: #e65100;
    --info: #0277bd;
    --error: #b3261e;

    --outline: rgba(28, 27, 31, 0.12);
    /* В светлой теме стекло упрощённое (как в приложении) */
    --glass-bg: rgba(255, 255, 255, 0.55);
    --glass-border: rgba(255, 255, 255, 0.9);
    --header-bg: rgba(247, 247, 249, 0.82);
    --shadow-card: 0 12px 32px rgba(28, 27, 31, 0.12);
    --shadow-pop: 0 16px 48px rgba(28, 27, 31, 0.18);
  }
}

/* ---------- База ---------- */

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

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--on-surface);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1,
h2,
h3,
p,
ul,
ol,
figure {
  margin: 0;
}

ul,
ol {
  padding: 0;
  list-style: none;
}

a {
  color: var(--primary);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

img,
svg {
  display: block;
  max-width: 100%;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 96px 0;
}

.section-title {
  font-size: clamp(26px, 4vw, 36px);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  text-align: center;
}

.section-subtitle {
  max-width: 640px;
  margin: 16px auto 0;
  color: var(--on-surface-variant);
  text-align: center;
  font-size: 17px;
}

.accent {
  color: var(--accent);
}

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

:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- Шапка ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--header-bg);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--outline);
}

.site-header .container {
  display: flex;
  align-items: center;
  gap: 24px;
  height: 64px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 19px;
  letter-spacing: -0.01em;
  color: var(--on-surface);
}

.brand:hover {
  text-decoration: none;
}

.brand img {
  width: 32px;
  height: 32px;
  border-radius: 9px;
}

.main-nav {
  display: flex;
  gap: 4px;
  margin-left: auto;
}

.main-nav a {
  padding: 8px 14px;
  border-radius: var(--radius-pill);
  color: var(--on-surface-variant);
  font-size: 15px;
  min-height: 40px;
  display: inline-flex;
  align-items: center;
}

.main-nav a:hover {
  color: var(--on-surface);
  background: var(--surface-high);
  text-decoration: none;
}

.header-cta {
  margin-left: 8px;
}

@media (max-width: 720px) {
  .main-nav {
    display: none;
  }

  .header-cta {
    margin-left: auto;
  }
}

/* ---------- Кнопки ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 12px 24px;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  font-family: inherit;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

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

.btn-primary:hover {
  box-shadow: 0 8px 24px rgba(103, 80, 164, 0.35);
}

.btn-ghost {
  background: transparent;
  color: var(--on-surface);
  border-color: var(--outline);
}

.btn-ghost:hover {
  background: var(--surface-high);
}

/* Кнопки-витрины магазинов приложений */
.store-btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-height: 64px;
  padding: 10px 22px;
  border-radius: var(--radius-large);
  background: var(--surface-highest);
  border: 1px solid var(--outline);
  color: var(--on-surface);
  text-align: left;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.store-btn:hover {
  text-decoration: none;
  transform: translateY(-2px);
  box-shadow: var(--shadow-card);
}

.store-btn svg {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
}

.store-btn small {
  display: block;
  font-size: 12px;
  color: var(--on-surface-variant);
  line-height: 1.3;
}

.store-btn strong {
  display: block;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.3;
}

/* ---------- Hero ---------- */

.hero {
  position: relative;
  overflow: hidden;
  padding: 88px 0 96px;
}

/* Фирменное свечение за hero — декоративно */
.hero::before {
  content: "";
  position: absolute;
  inset: -30% -20% auto;
  height: 720px;
  background:
    radial-gradient(closest-side, rgba(103, 80, 164, 0.35), transparent) 25% 30% / 640px 640px no-repeat,
    radial-gradient(closest-side, rgba(17, 153, 142, 0.22), transparent) 75% 60% / 560px 560px no-repeat;
  pointer-events: none;
}

.hero .container {
  position: relative;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 64px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  background: var(--surface-high);
  border: 1px solid var(--outline);
  font-size: 13px;
  font-weight: 600;
  color: var(--on-surface-variant);
}

.hero-badge .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--success);
}

.hero h1 {
  margin-top: 24px;
  font-size: clamp(34px, 5.4vw, 56px);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.03em;
}

.hero-lead {
  margin-top: 20px;
  max-width: 520px;
  font-size: 18px;
  color: var(--on-surface-variant);
}

.hero-stores {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 36px;
}

.hero-note {
  margin-top: 20px;
  font-size: 14px;
  color: var(--on-surface-variant);
}

@media (max-width: 900px) {
  .hero .container {
    grid-template-columns: 1fr;
    gap: 56px;
  }

  .hero-visual {
    display: flex;
    justify-content: center;
  }
}

/* ---------- Мокап телефона ---------- */

.phone {
  width: 300px;
  padding: 12px;
  border-radius: 44px;
  background: var(--surface-highest);
  border: 1px solid var(--outline);
  box-shadow: var(--shadow-pop);
  transform: rotate(3deg);
}

.phone-screen {
  border-radius: 34px;
  overflow: hidden;
  background: var(--bg);
  border: 1px solid var(--outline);
  padding: 14px;
}

.phone-statusbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 2px 10px 12px;
  font-size: 11px;
  font-weight: 600;
  color: var(--on-surface-variant);
}

.phone-appbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 4px 6px 14px;
  font-size: 15px;
  font-weight: 700;
}

.phone-appbar .avatar {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--grad-violet);
  border: 1px solid var(--glass-border);
}

.phone-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.mini-card {
  position: relative;
  aspect-ratio: var(--card-aspect);
  border-radius: var(--radius-chip);
  padding: 10px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  color: var(--card-text-light);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.35);
  overflow: hidden;
}

.mini-card.violet { background: var(--grad-violet); }
.mini-card.sunset { background: var(--grad-sunset); }
.mini-card.mint { background: var(--grad-mint); color: var(--card-text-dark); }
.mini-card.blue { background: var(--grad-blue); color: var(--card-text-dark-blue); }
.mini-card.dark { background: var(--grad-dark); }

.mini-card .logo-dot {
  width: 22px;
  height: 22px;
  border-radius: 7px;
  background: rgba(255, 255, 255, 0.22);
  border: 1px solid rgba(255, 255, 255, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 800;
}

.mini-card .name {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.mini-card .bars {
  height: 14px;
  border-radius: 3px;
  background: repeating-linear-gradient(
    90deg,
    currentColor 0 2px, transparent 2px 4px,
    currentColor 4px 5px, transparent 5px 9px,
    currentColor 9px 12px, transparent 12px 14px
  );
  opacity: 0.9;
}

.phone-chip {
  position: absolute;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: var(--radius-pill);
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  font-size: 13px;
  font-weight: 600;
  box-shadow: var(--shadow-card);
}

.hero-chip-1 {
  margin-top: -18px;
  margin-left: -34px;
  color: var(--on-surface);
}

.hero-chip-2 {
  justify-self: end;
  margin-top: 18px;
  margin-right: -20px;
  color: var(--accent);
}

@media (max-width: 480px) {
  .phone {
    transform: none;
    width: 272px;
  }

  .hero-chip-1 { margin-left: 0; }
  .hero-chip-2 { margin-right: 0; }
}

/* ---------- Возможности ---------- */

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 56px;
}

.feature-card {
  padding: 28px;
  border-radius: var(--radius-large);
  background: var(--surface-high);
  border: 1px solid var(--outline);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.feature-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-card);
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-chip);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--surface-medium);
  color: var(--primary);
  margin-bottom: 20px;
}

.feature-icon svg {
  width: 24px;
  height: 24px;
}

.feature-card h3 {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.feature-card p {
  margin-top: 10px;
  font-size: 15px;
  color: var(--on-surface-variant);
}

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

@media (max-width: 600px) {
  .features-grid {
    grid-template-columns: 1fr;
  }
}

/* ---------- Как это работает ---------- */

.section-alt {
  background: var(--surface-low);
  border-top: 1px solid var(--outline);
  border-bottom: 1px solid var(--outline);
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 56px;
  counter-reset: step;
}

.step {
  position: relative;
  padding: 32px 28px;
  border-radius: var(--radius-large);
  background: var(--surface);
  border: 1px solid var(--outline);
}

.step::before {
  counter-increment: step;
  content: counter(step);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--primary);
  color: var(--on-primary);
  font-weight: 800;
  font-size: 17px;
  margin-bottom: 20px;
}

.step h3 {
  font-size: 18px;
  font-weight: 700;
}

.step p {
  margin-top: 10px;
  font-size: 15px;
  color: var(--on-surface-variant);
}

@media (max-width: 800px) {
  .steps {
    grid-template-columns: 1fr;
  }
}

/* ---------- Витрина карт ---------- */

.showcase-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 56px;
  align-items: start;
}

.showcase-card {
  position: relative;
  aspect-ratio: var(--card-aspect);
  border-radius: var(--radius-large);
  padding: 22px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  color: var(--card-text-light);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  outline: 1px solid var(--glass-border);
  outline-offset: -1px;
  transition: transform 0.2s ease;
}

.showcase-card:hover {
  transform: translateY(-6px) rotate(-1deg);
}

.showcase-card.violet { background: var(--grad-violet); }
.showcase-card.sunset { background: var(--grad-sunset); }
.showcase-card.mint { background: var(--grad-mint); color: var(--card-text-dark); }
.showcase-card.blue { background: var(--grad-blue); color: var(--card-text-dark-blue); }
.showcase-card.dark { background: var(--grad-dark); }

.showcase-card .top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.showcase-card .logo-dot {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-chip);
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  border: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 17px;
}

.showcase-card .chip {
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  border: 1px solid var(--glass-border);
  font-size: 12px;
  font-weight: 700;
}

.showcase-card .shop {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.showcase-card .number {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 1.5px;
  opacity: 0.92;
  margin-top: 4px;
}

.showcase-card .bars {
  height: 30px;
  border-radius: 4px;
  margin-top: 14px;
  background: repeating-linear-gradient(
    90deg,
    currentColor 0 3px, transparent 3px 6px,
    currentColor 6px 7px, transparent 7px 12px,
    currentColor 12px 16px, transparent 16px 19px,
    currentColor 19px 20px, transparent 20px 25px
  );
  opacity: 0.92;
}

.showcase-note {
  margin-top: 28px;
  text-align: center;
  font-size: 14px;
  color: var(--on-surface-variant);
}

@media (max-width: 800px) {
  .showcase-row {
    grid-template-columns: 1fr;
    max-width: 420px;
    margin-left: auto;
    margin-right: auto;
  }
}

/* ---------- FAQ ---------- */

.faq-list {
  max-width: 760px;
  margin: 56px auto 0;
  display: grid;
  gap: 12px;
}

.faq-list details {
  border-radius: var(--radius-large);
  background: var(--surface-high);
  border: 1px solid var(--outline);
  overflow: hidden;
}

.faq-list summary {
  position: relative;
  padding: 20px 56px 20px 24px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  min-height: 48px;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary::after {
  content: "";
  position: absolute;
  right: 22px;
  top: 50%;
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--on-surface-variant);
  border-bottom: 2px solid var(--on-surface-variant);
  transform: translateY(-70%) rotate(45deg);
  transition: transform 0.15s ease;
}

.faq-list details[open] summary::after {
  transform: translateY(-30%) rotate(225deg);
}

.faq-list .faq-answer {
  padding: 0 24px 20px;
  color: var(--on-surface-variant);
  font-size: 15px;
}

/* ---------- Скачать ---------- */

.download {
  position: relative;
  overflow: hidden;
}

.download::before {
  content: "";
  position: absolute;
  inset: auto -20% -60%;
  height: 560px;
  background: radial-gradient(closest-side, rgba(103, 80, 164, 0.3), transparent) 50% 50% / 720px 720px no-repeat;
  pointer-events: none;
}

.download-card {
  position: relative;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 48px;
  align-items: center;
  padding: 56px;
  border-radius: var(--radius-dialog);
  background: var(--surface-high);
  border: 1px solid var(--outline);
  box-shadow: var(--shadow-pop);
}

.download-card h2 {
  font-size: clamp(26px, 4vw, 36px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.download-card > div > p {
  margin-top: 14px;
  color: var(--on-surface-variant);
  max-width: 480px;
}

.download-stores {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 28px;
}

.download-side {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  text-align: center;
}

.download-side img {
  width: 148px;
  height: 148px;
  border-radius: var(--radius-large);
  border: 1px solid var(--outline);
  background: var(--surface);
  padding: 10px;
}

.download-side figcaption {
  font-size: 13px;
  color: var(--on-surface-variant);
  max-width: 180px;
}

.ios-note {
  margin-top: 20px;
  font-size: 14px;
  color: var(--on-surface-variant);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.ios-note::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--info);
}

@media (max-width: 860px) {
  .download-card {
    grid-template-columns: 1fr;
    padding: 36px 28px;
  }

  .download-side {
    margin: 0 auto;
  }
}

/* ---------- Подвал ---------- */

.site-footer {
  border-top: 1px solid var(--outline);
  padding: 48px 0 40px;
  background: var(--surface-low);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 32px;
}

.footer-grid p {
  margin-top: 14px;
  font-size: 14px;
  color: var(--on-surface-variant);
  max-width: 320px;
}

.footer-col h2,
.footer-col h3 {
  font-size: 14px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--on-surface-variant);
  margin-bottom: 14px;
}

.footer-col ul {
  display: grid;
  gap: 10px;
}

.footer-col a {
  color: var(--on-surface);
  font-size: 15px;
}

.footer-bottom {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--outline);
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--on-surface-variant);
}

@media (max-width: 760px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

/* ---------- Документная страница (политика) ---------- */

.doc-main {
  padding: 64px 0 96px;
}

.doc-main .container {
  max-width: 760px;
}

.doc-main h1 {
  font-size: clamp(28px, 4vw, 38px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.doc-updated {
  margin-top: 12px;
  font-size: 14px;
  color: var(--on-surface-variant);
}

.doc-body {
  margin-top: 40px;
  display: grid;
  gap: 28px;
}

.doc-body h2 {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 10px;
}

.doc-body p,
.doc-body li {
  color: var(--on-surface-variant);
  font-size: 15px;
}

.doc-body ul {
  list-style: disc;
  padding-left: 22px;
  display: grid;
  gap: 8px;
}

.doc-body .todo {
  padding: 12px 16px;
  border-radius: var(--radius-chip);
  background: color-mix(in srgb, var(--warning) 14%, transparent);
  border: 1px dashed var(--warning);
  font-size: 14px;
}