/* по·слогам — сайт-витрина. Палитра MD3 синхронизирована с приложением. */
:root {
  --md-primary: #465fa5;
  --md-on-primary: #ffffff;
  --md-primary-container: #dee0ff;
  --md-on-primary-container: #001251;
  --md-secondary-container: #e1e0f9;
  --md-on-secondary-container: #181a2c;
  --md-tertiary-container: #ffd8e2;
  --md-error: #ba1a1a;
  --md-background: #fbf8ff;
  --md-surface: #fbf8ff;
  --md-surface-container-lowest: #ffffff;
  --md-surface-container-low: #f5f2fa;
  --md-surface-container: #f2eff7;
  --md-surface-container-high: #ece9f1;
  --md-on-surface: #1b1b21;
  --md-on-surface-variant: #46464f;
  --md-outline: #777680;
  --md-outline-variant: #c7c5d0;
  --shape-md: 12px;
  --shape-lg: 16px;
  --shape-xl: 28px;
  --shape-full: 999px;
  --elev-1: 0 1px 2px rgba(0, 0, 0, 0.15), 0 1px 3px 1px rgba(0, 0, 0, 0.12);
  --elev-2: 0 1px 2px rgba(0, 0, 0, 0.15), 0 2px 6px 2px rgba(0, 0, 0, 0.12);
  color-scheme: light;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: 'Lexend', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  color: var(--md-on-surface);
  background: var(--md-background);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
}

.wrap { width: min(92vw, 960px); margin: 0 auto; }

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

/* ===== Header ===== */
.site-header {
  padding: 16px 0;
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.brand { font-size: 1.4rem; font-weight: 600; letter-spacing: 0.01em; }
.brand .dot { color: var(--md-primary); }

/* ===== Hero ===== */
.hero {
  padding: 48px 0 32px;
  text-align: center;
}
.hero h1 {
  font-size: clamp(1.8rem, 5vw, 2.8rem);
  font-weight: 600;
  margin: 0 0 16px;
  line-height: 1.2;
}
.hero p.lead {
  font-size: clamp(1.05rem, 2.5vw, 1.25rem);
  color: var(--md-on-surface-variant);
  max-width: 36ch;
  margin: 0 auto 28px;
}
.hero .demo {
  display: inline-block;
  padding: 18px 26px;
  font-size: clamp(1.3rem, 4vw, 2rem);
  font-weight: 500;
  background: var(--md-surface-container-low);
  border: 1px solid var(--md-outline-variant);
  border-radius: var(--shape-xl);
  letter-spacing: 0.02em;
  box-shadow: var(--elev-1);
}
.hero .demo .sep { color: var(--md-primary); padding: 0 1px; }

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 0 28px;
  border: none;
  border-radius: var(--shape-full);
  background: var(--md-primary);
  color: var(--md-on-primary);
  font: inherit;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  text-decoration: none;
  box-shadow: var(--elev-1);
  transition: box-shadow 0.15s, transform 0.05s;
}
.btn:hover { box-shadow: var(--elev-2); }
.btn:active { transform: translateY(1px); }
.btn--ghost {
  background: transparent;
  color: var(--md-primary);
  border: 1px solid var(--md-outline);
  box-shadow: none;
}

/* ===== Sections ===== */
section { padding: 40px 0; }
.section-title {
  font-size: clamp(1.4rem, 3.5vw, 2rem);
  font-weight: 600;
  text-align: center;
  margin: 0 0 28px;
}

/* ===== Features ===== */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}
.feature {
  padding: 22px;
  background: var(--md-surface-container-low);
  border-radius: var(--shape-lg);
}
.feature h3 { margin: 0 0 6px; font-size: 1.1rem; }
.feature p { margin: 0; color: var(--md-on-surface-variant); font-size: 0.95rem; }

/* ===== Pricing ===== */
.plans {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  max-width: 640px;
  margin: 0 auto;
}
.plan {
  position: relative;
  padding: 28px 24px;
  background: var(--md-surface-container-lowest);
  border: 1px solid var(--md-outline-variant);
  border-radius: var(--shape-xl);
  text-align: center;
  box-shadow: var(--elev-1);
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.plan--best { border-color: var(--md-primary); border-width: 2px; }
.plan__badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--md-primary);
  color: var(--md-on-primary);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: var(--shape-full);
}
.plan__name { font-size: 1.2rem; font-weight: 600; }
.plan__price { font-size: 2.2rem; font-weight: 700; }
.plan__price .rub { font-size: 1.2rem; font-weight: 500; }
.plan__note { color: var(--md-on-surface-variant); font-size: 0.9rem; min-height: 1.2em; }
.plan .btn { width: 100%; }

/* ===== FAQ ===== */
.faq { max-width: 640px; margin: 0 auto; }
.faq details {
  background: var(--md-surface-container-low);
  border-radius: var(--shape-md);
  padding: 14px 18px;
  margin-bottom: 10px;
}
.faq summary { font-weight: 600; cursor: pointer; }
.faq p { color: var(--md-on-surface-variant); margin: 10px 0 2px; }

/* ===== Footer ===== */
.site-footer {
  padding: 32px 0 48px;
  text-align: center;
  color: var(--md-on-surface-variant);
  font-size: 0.9rem;
}
.site-footer .wrap > * { margin: 4px 0; }

/* ===== Success page ===== */
.success {
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.success__card {
  width: min(92vw, 460px);
  padding: 36px 28px;
  background: var(--md-surface-container-lowest);
  border-radius: var(--shape-xl);
  box-shadow: var(--elev-2);
  text-align: center;
}
.success__card h1 { font-size: 1.5rem; margin: 0 0 8px; }
.success__status { color: var(--md-on-surface-variant); margin: 0 0 20px; }
.code-box {
  display: flex;
  gap: 8px;
  align-items: stretch;
  margin: 18px 0;
}
.code-box input {
  flex: 1;
  padding: 14px 12px;
  font-size: 1.15rem;
  font-weight: 600;
  text-align: center;
  letter-spacing: 0.04em;
  border: 2px solid var(--md-primary);
  border-radius: var(--shape-md);
  background: var(--md-surface-container-low);
  color: var(--md-on-surface);
}
.spinner {
  width: 36px; height: 36px;
  margin: 8px auto 20px;
  border: 4px solid var(--md-outline-variant);
  border-top-color: var(--md-primary);
  border-radius: 50%;
  animation: spin 0.9s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.steps { text-align: left; margin: 20px auto 0; max-width: 320px; color: var(--md-on-surface-variant); }
.steps li { margin: 6px 0; }
.hidden { display: none !important; }