/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}

.site-header__bar {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  height: var(--header-height);
}

.site-header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.site-header__logo-mark {
  height: 40px;
  width: auto;
}

.site-header__logo-mark--full {
  height: 56px;
}

.site-header__logo-text {
  font-size: var(--fs-xl);
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--color-primary);
}

.site-header__nav {
  flex: 1;
}

.site-header__nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-5);
}

.site-header__nav a {
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--color-text);
  padding: var(--space-2) 0;
  border-bottom: 2px solid transparent;
  transition: color var(--transition-base), border-color var(--transition-base);
}

.site-header__nav a:hover,
.site-header__nav a.is-active {
  color: var(--color-primary);
  border-color: var(--color-accent);
}

.site-header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.site-header__search {
  position: relative;
}

.site-header__search-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: none;
  background: none;
  border-radius: 999px;
}

.site-header__search-toggle:hover {
  background: var(--color-bg-alt);
}

.site-header__search-toggle img {
  width: 20px;
  height: 20px;
}

.site-header__search-panel {
  position: absolute;
  top: calc(100% + var(--space-3));
  right: 0;
  display: flex;
  gap: var(--space-2);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: var(--space-3);
  width: min(320px, 90vw);
  z-index: 10;
}

.site-header__search-panel[hidden] {
  display: none;
}

.site-header__search-panel input {
  flex: 1;
  min-width: 0;
}

.site-header__phone {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 600;
  font-size: var(--fs-sm);
  white-space: nowrap;
}

.site-header__phone img {
  width: 18px;
  height: 18px;
}

.site-header__cart {
  position: relative;
  display: flex;
  align-items: center;
}

.site-header__cart img {
  width: 24px;
  height: 24px;
}

.site-header__cart-count {
  position: absolute;
  top: -8px;
  right: -10px;
  background: var(--color-accent);
  color: var(--color-text-inverse);
  font-size: 11px;
  font-weight: 700;
  line-height: 1;
  padding: 3px 5px;
  border-radius: 999px;
  min-width: 16px;
  text-align: center;
}

.site-header__burger {
  display: none;
  background: none;
  border: none;
  padding: var(--space-2);
}

.site-header__burger img {
  width: 24px;
  height: 24px;
}

@media (max-width: 900px) {
  .site-header__nav {
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base);
  }

  .site-header__nav.is-open {
    max-height: 480px;
  }

  .site-header__nav ul {
    flex-direction: column;
    gap: 0;
    padding: var(--space-3) var(--space-5) var(--space-5);
  }

  .site-header__nav a {
    display: block;
    padding: var(--space-3) 0;
    border-bottom: 1px solid var(--color-border);
  }

  .site-header__phone span {
    display: none;
  }

  .site-header__search-panel {
    position: fixed;
    top: var(--header-height);
    left: var(--space-3);
    right: var(--space-3);
    width: auto;
  }

  .site-header__burger {
    display: block;
  }
}

/* ===== Footer ===== */
.site-footer {
  background: var(--color-bg-dark);
  color: rgba(255, 255, 255, 0.75);
  margin-top: var(--space-8);
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: var(--space-6);
  padding: var(--space-7) var(--space-5);
}

.site-footer__logo {
  height: 30px;
  margin-bottom: var(--space-3);
}

.site-footer__brand p {
  font-size: var(--fs-sm);
  max-width: 32ch;
}

.site-footer__social {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.site-footer__social a {
  width: 36px;
  height: 36px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
}

.site-footer__social img {
  width: 16px;
  height: 16px;
  filter: brightness(0) invert(1);
}

.site-footer__col h4 {
  color: var(--color-text-inverse);
  font-size: var(--fs-sm);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: var(--space-3);
}

.site-footer__col ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.site-footer__col a,
.site-footer__col address {
  font-size: var(--fs-sm);
  font-style: normal;
}

.site-footer__col a:hover {
  color: var(--color-accent);
}

.site-footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: var(--space-4) var(--space-5);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: center;
  justify-content: space-between;
  font-size: var(--fs-xs);
}

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

@media (max-width: 500px) {
  .site-footer__grid {
    grid-template-columns: 1fr;
  }
}

/* ===== Generic layout helpers ===== */
.grid {
  display: grid;
  gap: var(--space-5);
}

.grid--2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid--3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid--4 {
  grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 900px) {
  .grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }
  .grid--3 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 600px) {
  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: 1fr;
  }
}

.shop-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: var(--space-6);
  align-items: start;
}

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

/* ===== Callback widget ===== */
.callback-fab {
  position: fixed;
  right: var(--space-5);
  bottom: var(--space-5);
  z-index: 200;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  border-radius: 999px;
  border: none;
  background: var(--color-accent);
  color: var(--color-text);
  font-weight: 700;
  font-size: var(--fs-sm);
  box-shadow: var(--shadow-lg);
  transition: transform var(--transition-base), background var(--transition-base);
}

.callback-fab:hover {
  background: var(--color-accent-dark);
  transform: translateY(-2px);
}

.callback-fab img {
  width: 18px;
  height: 18px;
}

@media (max-width: 600px) {
  .callback-fab span {
    display: none;
  }
  .callback-fab {
    padding: var(--space-3);
  }
}

.callback-modal {
  position: fixed;
  inset: 0;
  z-index: 300;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-5);
}

.callback-modal[hidden] {
  display: none;
}

.callback-modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(11, 31, 47, 0.6);
}

.callback-modal__panel {
  position: relative;
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  max-width: 380px;
  width: 100%;
  box-shadow: var(--shadow-lg);
}

.callback-modal__close {
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  width: 32px;
  height: 32px;
  border: none;
  background: var(--color-bg-alt);
  border-radius: 999px;
  font-size: var(--fs-lg);
  line-height: 1;
  color: var(--color-text-muted);
}

.callback-modal__close:hover {
  color: var(--color-text);
}