/* MindWave — Shared UI components */

/* ===== Header ===== */
.site-header {
  position: sticky; top: 0; z-index: var(--z-header);
  background: rgba(10, 10, 10, 0.82);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-border);
}
.site-header .container { display: flex; align-items: center; height: var(--header-h); gap: var(--space-5); }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; font-size: var(--fs-lg); letter-spacing: -0.02em; }
.brand .brand-mark {
  width: 30px; height: 30px; border-radius: 8px; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--color-accent), #ff3d00);
  color: #0a0a0a; font-weight: 900;
  box-shadow: 0 0 18px rgba(255, 106, 0, 0.45);
}
.brand .brand-mark svg { width: 18px; height: 18px; }
.brand .brand-name { background: linear-gradient(90deg, #fff, #ffb38a); -webkit-background-clip: text; background-clip: text; color: transparent; }

.nav { display: flex; align-items: center; gap: var(--space-1); margin-left: var(--space-4); }
.nav a {
  padding: 8px 14px; border-radius: var(--radius-pill); font-size: var(--fs-sm); font-weight: 500;
  color: var(--color-text-muted); transition: background var(--transition-fast), color var(--transition-fast);
}
.nav a:hover { color: var(--color-text); background: var(--color-surface-2); }
.nav a.active { color: var(--color-text); background: var(--color-surface-3); }
.nav a.active::after { color: var(--color-accent); }

.header-actions { margin-left: auto; display: flex; align-items: center; gap: var(--space-3); }
.icon-btn {
  width: 40px; height: 40px; display: grid; place-items: center; border-radius: 50%;
  background: var(--color-surface-2); color: var(--color-text); border: 1px solid var(--color-border);
  transition: border var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
  position: relative;
}
.icon-btn:hover { border-color: var(--color-accent); color: var(--color-accent); }
.icon-btn svg { width: 18px; height: 18px; }
.cart-badge {
  position: absolute; top: -4px; right: -4px; min-width: 18px; height: 18px; padding: 0 5px;
  background: var(--color-accent); color: #0a0a0a; border-radius: 9px; font-size: 11px; font-weight: 700;
  display: grid; place-items: center; line-height: 1; transform: scale(0); transition: transform var(--transition-fast);
}
.cart-badge.show { transform: scale(1); }

.lang-toggle {
  display: inline-flex; align-items: center; padding: 4px; border-radius: var(--radius-pill);
  background: var(--color-surface-2); border: 1px solid var(--color-border); gap: 0;
}
.lang-toggle button {
  padding: 6px 12px; font-size: var(--fs-xs); font-weight: 600; border-radius: var(--radius-pill);
  color: var(--color-text-muted); transition: background var(--transition-fast), color var(--transition-fast);
}
.lang-toggle button.active { background: var(--color-accent); color: #0a0a0a; }

.menu-toggle { display: none; }

/* Mobile drawer */
.mobile-nav { display: none; }

/* ===== Footer ===== */
.site-footer { background: var(--color-surface); border-top: 1px solid var(--color-border); padding: var(--space-8) 0 var(--space-5); }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: var(--space-6); }
.footer-brand .brand { margin-bottom: var(--space-3); }
.footer-brand p { color: var(--color-text-muted); max-width: 340px; line-height: var(--lh-relaxed); font-size: var(--fs-sm); }
.footer-col h4 { font-size: var(--fs-sm); text-transform: uppercase; letter-spacing: 0.1em; color: var(--color-text); margin-bottom: var(--space-3); }
.footer-col a { display: block; color: var(--color-text-muted); padding: 6px 0; font-size: var(--fs-sm); }
.footer-col a:hover { color: var(--color-accent); }
.footer-social { display: flex; gap: var(--space-2); margin-top: var(--space-4); }
.footer-social a { width: 36px; height: 36px; display: grid; place-items: center; border-radius: 50%; background: var(--color-surface-2); border: 1px solid var(--color-border); }
.footer-social a:hover { border-color: var(--color-accent); color: var(--color-accent); }
.footer-social svg { width: 16px; height: 16px; }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; padding-top: var(--space-5); margin-top: var(--space-6); border-top: 1px solid var(--color-border); color: var(--color-text-dim); font-size: var(--fs-xs); }

/* ===== Product card ===== */
.product-card {
  display: flex; flex-direction: column; background: var(--color-surface);
  border: 1px solid var(--color-border); border-radius: var(--radius-lg);
  overflow: hidden; position: relative; transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}
.product-card:hover { transform: translateY(-4px); border-color: var(--color-accent-border); box-shadow: var(--shadow-md); }
.product-card .media {
  aspect-ratio: 1 / 1; background: var(--color-surface-2); position: relative; overflow: hidden;
}
.product-card .media img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--transition); }
.product-card:hover .media img { transform: scale(1.04); }
.product-card .body { padding: var(--space-4); display: flex; flex-direction: column; gap: var(--space-2); flex: 1; }
.product-card .cat { font-size: var(--fs-xs); color: var(--color-text-dim); text-transform: uppercase; letter-spacing: 0.08em; }
.product-card .name { font-size: var(--fs-md); font-weight: 600; line-height: var(--lh-snug); }
.product-card .price-row { display: flex; align-items: center; justify-content: space-between; margin-top: auto; padding-top: var(--space-3); }
.product-card .price { font-size: var(--fs-lg); font-weight: 700; color: var(--color-accent); }

/* ===== Filter chips ===== */
.chip-bar { display: flex; flex-wrap: wrap; gap: var(--space-2); margin-bottom: var(--space-6); }
.chip {
  padding: 8px 18px; border-radius: var(--radius-pill); border: 1px solid var(--color-border);
  background: var(--color-surface); color: var(--color-text-muted); font-size: var(--fs-sm); font-weight: 500;
  transition: all var(--transition-fast);
}
.chip:hover { border-color: var(--color-accent-border); color: var(--color-text); }
.chip.active { background: var(--color-accent); color: #0a0a0a; border-color: var(--color-accent); }

/* ===== Breadcrumb ===== */
.breadcrumb { display: flex; gap: var(--space-2); align-items: center; color: var(--color-text-dim); font-size: var(--fs-sm); margin-bottom: var(--space-4); }
.breadcrumb a:hover { color: var(--color-accent); }
.breadcrumb .sep { color: var(--color-border-strong); }

/* ===== Accordion (FAQ) ===== */
.accordion { border: 1px solid var(--color-border); border-radius: var(--radius-lg); overflow: hidden; background: var(--color-surface); }
.accordion-item + .accordion-item { border-top: 1px solid var(--color-border); }
.accordion-trigger { width: 100%; display: flex; justify-content: space-between; align-items: center; padding: var(--space-4) var(--space-5); text-align: left; font-weight: 600; font-size: var(--fs-md); }
.accordion-trigger .icon { transition: transform var(--transition); color: var(--color-accent); }
.accordion-item.open .accordion-trigger .icon { transform: rotate(45deg); }
.accordion-panel { max-height: 0; overflow: hidden; transition: max-height var(--transition); }
.accordion-panel .inner { padding: 0 var(--space-5) var(--space-4); color: var(--color-text-muted); line-height: var(--lh-relaxed); }

/* ===== Toast ===== */
.toast-stack { position: fixed; top: calc(var(--header-h) + 12px); right: 16px; z-index: var(--z-toast); display: flex; flex-direction: column; gap: var(--space-2); pointer-events: none; }
.toast {
  pointer-events: auto; min-width: 260px; max-width: 340px;
  background: var(--color-surface-3); border: 1px solid var(--color-border-strong);
  border-left: 3px solid var(--color-accent);
  padding: 12px 16px; border-radius: var(--radius-md); box-shadow: var(--shadow-md);
  display: flex; align-items: center; gap: var(--space-3); font-size: var(--fs-sm);
  transform: translateX(120%); opacity: 0; transition: transform var(--transition), opacity var(--transition);
}
.toast.show { transform: translateX(0); opacity: 1; }
.toast--success { border-left-color: var(--color-success); }
.toast--error { border-left-color: var(--color-danger); }
.toast svg { width: 18px; height: 18px; flex-shrink: 0; }

/* ===== Empty state ===== */
.empty-state { text-align: center; padding: var(--space-9) var(--space-4); color: var(--color-text-muted); }
.empty-state .icon { width: 56px; height: 56px; margin: 0 auto var(--space-4); color: var(--color-border-strong); }

/* ===== Spec table ===== */
.spec-table { width: 100%; border-collapse: collapse; }
.spec-table tr + tr td { border-top: 1px solid var(--color-border); }
.spec-table td { padding: 14px 0; vertical-align: top; }
.spec-table td:first-child { color: var(--color-text-muted); width: 40%; }
.spec-table td:last-child { font-weight: 500; }