/* ============================================================
   LAYOUT — header, footer, page shell, container
   ============================================================ */

/* ── Container ── */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

/* ── Site Header ── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-header-bg);
  height: var(--header-height);
  border-bottom: 1px solid rgba(255,255,255,.06);
  box-shadow: 0 2px 12px rgba(0,0,0,.3);
}

.header-inner {
  display: flex;
  align-items: center;
  height: 100%;
  gap: var(--space-8);
}

.site-logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-shrink: 0;
}

.site-logo .logo-mark {
  width: 32px;
  height: 32px;
  background: var(--color-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xl);
}

.site-logo .logo-text {
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  color: #fff;
  letter-spacing: -0.02em;
}

.site-logo .logo-text span {
  color: var(--color-primary);
}

/* ── Primary Nav ── */
.primary-nav {
  display: flex;
  gap: var(--space-1);
  flex: 1;
}

.primary-nav a {
  color: var(--color-header-muted);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  transition: color var(--transition-fast), background var(--transition-fast);
  white-space: nowrap;
}

.primary-nav a:hover,
.primary-nav a.active {
  color: #fff;
  background: rgba(255,255,255,.08);
}

/* ── Header Actions ── */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

.search-bar {
  display: flex;
  align-items: center;
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius-full);
  padding: var(--space-2) var(--space-4);
  gap: var(--space-2);
  width: 220px;
  transition: border-color var(--transition-fast), background var(--transition-fast);
}

.search-bar:focus-within {
  background: rgba(255,255,255,.12);
  border-color: var(--color-primary);
}

.search-bar input {
  background: none;
  border: none;
  outline: none;
  color: #fff;
  font-size: var(--text-sm);
  width: 100%;
}

.search-bar input::placeholder { color: var(--color-header-muted); }

.search-icon { color: var(--color-header-muted); font-size: var(--text-base); }

.header-btn {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-header-muted);
  font-size: var(--text-sm);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  transition: color var(--transition-fast), background var(--transition-fast);
  position: relative;
}

.header-btn:hover { color: #fff; background: rgba(255,255,255,.08); }
.header-btn svg { width: 20px; height: 20px; }

.cart-badge {
  position: absolute;
  top: -2px;
  right: -2px;
  background: var(--color-accent);
  color: #fff;
  font-size: 10px;
  font-weight: var(--font-bold);
  width: 18px;
  height: 18px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  border: 2px solid var(--color-header-bg);
  display: none;
}

.cart-badge.visible { display: flex; }

.user-greeting {
  color: var(--color-header-muted);
  font-size: var(--text-sm);
  max-width: 120px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ── Page Main ── */
.page-main {
  min-height: calc(100vh - var(--header-height) - 200px);
  padding-bottom: var(--space-20);
}

/* ── Site Footer ── */
.site-footer {
  background: var(--color-header-bg);
  color: var(--color-header-muted);
  padding: var(--space-12) 0 var(--space-8);
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-8);
  margin-bottom: var(--space-10);
}

.footer-brand p { font-size: var(--text-sm); line-height: 1.7; margin-top: var(--space-4); max-width: 280px; }

.footer-col h4 {
  color: #fff;
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-4);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

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

.footer-col a {
  font-size: var(--text-sm);
  transition: color var(--transition-fast);
}

.footer-col a:hover { color: #fff; }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.06);
  padding-top: var(--space-6);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--text-xs);
}

/* ── Section ── */
.section { padding: var(--space-16) 0; }
.section-sm { padding: var(--space-10) 0; }

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: var(--space-8);
}

.section-title {
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  color: var(--color-text);
}

.section-link {
  font-size: var(--text-sm);
  color: var(--color-primary);
  font-weight: var(--font-medium);
  transition: color var(--transition-fast);
}

.section-link:hover { color: var(--color-primary-hover); }

/* ── Page layout: sidebar + main ── */
.page-with-sidebar {
  display: grid;
  grid-template-columns: var(--sidebar-width) 1fr;
  gap: var(--space-8);
  padding-top: var(--space-8);
}

/* ── Breadcrumb ── */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  padding: var(--space-4) 0;
}

.breadcrumb a { transition: color var(--transition-fast); }
.breadcrumb a:hover { color: var(--color-primary); }
.breadcrumb-sep { color: var(--color-border); }
.breadcrumb-current { color: var(--color-text); font-weight: var(--font-medium); }

/* ── Responsive ── */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .page-with-sidebar { grid-template-columns: 200px 1fr; }
}

@media (max-width: 768px) {
  .primary-nav { display: none; }
  .search-bar { display: none; }
  .footer-grid { grid-template-columns: 1fr; }
  .page-with-sidebar { grid-template-columns: 1fr; }
  .mobile-menu-btn { display: flex; }
  .container { padding: 0 var(--space-4); }
}