/* Каркас страницы: шапка, навигация, секции, подвал, сетки. */

/* --- Шапка --- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--c-line);
}

.site-header__inner {
  display: flex;
  align-items: center;
  gap: 24px;
  min-height: 76px;
}

.brand {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.brand img {
  height: 40px;
  width: auto;
}

.main-nav {
  display: flex;
  gap: 22px;
  margin-left: auto;
}

.main-nav a {
  color: var(--c-ink);
  font-size: var(--fs-sm);
  font-weight: 600;
  white-space: nowrap;
}

.main-nav a:hover,
.main-nav a[aria-current="page"] {
  color: var(--c-red);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-sm);
  background: #fff;
  position: relative;
}

.nav-toggle span,
.nav-toggle::before,
.nav-toggle::after {
  content: "";
  position: absolute;
  left: 11px;
  right: 11px;
  height: 2px;
  background: var(--c-ink);
}

.nav-toggle::before {
  top: 14px;
}

.nav-toggle span {
  top: 21px;
}

.nav-toggle::after {
  top: 28px;
}

/* --- Первый экран --- */
.hero {
  position: relative;
  padding: clamp(40px, 7vw, 96px) 0;
  background: linear-gradient(180deg, #fff 0%, var(--c-surface-3) 100%);
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  right: -180px;
  top: -120px;
  width: 520px;
  height: 520px;
  background: radial-gradient(circle, rgba(185, 0, 0, 0.12), transparent 65%);
  pointer-events: none;
}

.hero__inner {
  position: relative;
  max-width: 820px;
}

.hero__title {
  margin-bottom: 0.4em;
}

.hero__subtitle {
  font-size: clamp(17px, 1.6vw, 20px);
  color: var(--c-muted);
  max-width: 640px;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(20px, 4vw, 56px);
  margin-top: clamp(32px, 5vw, 56px);
  list-style: none;
}

.hero__stat b {
  display: block;
  font-size: clamp(26px, 3vw, 38px);
  color: var(--c-red);
  line-height: 1;
}

.hero__stat span {
  font-size: var(--fs-sm);
  color: var(--c-muted);
}

/* --- Сетки --- */
.grid {
  display: grid;
  gap: var(--gap);
}

.grid--categories {
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
}

.grid--products {
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
}

.grid--features {
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
}

.grid--split {
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
}

/* --- Подвал --- */
.site-footer {
  background: var(--c-ink);
  color: #d9d9dc;
  padding-top: clamp(40px, 6vw, 72px);
}

.site-footer a {
  color: #fff;
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 32px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
}

.site-footer h4 {
  color: #fff;
  font-size: var(--fs-sm);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.site-footer ul {
  list-style: none;
  display: grid;
  gap: 10px;
}

.site-footer__brand-name {
  font-size: 22px;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.06em;
}

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: space-between;
  padding: 22px 0 32px;
  font-size: var(--fs-xs);
  color: #9a9a9f;
}

/* --- Адаптив --- */
@media (max-width: 960px) {
  .grid--split {
    grid-template-columns: 1fr;
  }

  .site-footer__grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 780px) {
  .main-nav {
    position: fixed;
    inset: 76px 0 auto 0;
    flex-direction: column;
    gap: 0;
    background: #fff;
    border-bottom: 1px solid var(--c-line);
    padding: 8px var(--space) 20px;
    transform: translateY(-120%);
    transition: transform var(--transition);
    box-shadow: var(--shadow);
  }

  .main-nav.is-open {
    transform: translateY(0);
  }

  .main-nav a {
    padding: 14px 0;
    border-bottom: 1px solid var(--c-line);
    font-size: var(--fs-body);
  }

  .nav-toggle {
    display: block;
  }

  .header-actions .btn {
    display: none;
  }

  .site-footer__grid {
    grid-template-columns: 1fr;
  }
}