/* =====================================================
   B73 BAGS STORE – Store CSS
   Dark luxury aesthetic: deep charcoal + gold accents
===================================================== */

:root {
  --bg-dark:     #0d0d12;
  --bg-card:     #16161f;
  --bg-card2:    #1e1e2a;
  --border:      rgba(255,255,255,0.07);
  --gold:        #c9a84c;
  --gold-light:  #e2c16d;
  --gold-dim:    rgba(201,168,76,0.15);
  --text-primary:   #f0ece4;
  --text-secondary: #9b9aab;
  --text-muted:     #5e5d72;
  --accent-red:  #ef4444;
  --accent-green:#10b981;
  --radius-sm:   8px;
  --radius-md:   14px;
  --radius-lg:   20px;
  --shadow-sm:   0 2px 12px rgba(0,0,0,0.3);
  --shadow-md:   0 8px 32px rgba(0,0,0,0.4);
  --shadow-lg:   0 20px 60px rgba(0,0,0,0.5);
  --transition:  all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
button { cursor: pointer; font-family: inherit; }

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-dark); }
::-webkit-scrollbar-thumb { background: var(--gold); border-radius: 3px; }

/* ── Container ── */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ── Buttons ── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 10px 24px; border-radius: var(--radius-sm);
  font-weight: 600; font-size: 0.875rem; letter-spacing: 0.3px;
  border: 2px solid transparent; transition: var(--transition);
  cursor: pointer;
}
.btn-primary {
  background: linear-gradient(135deg, var(--gold), #a8873a);
  color: #0d0d12; border-color: var(--gold);
}
.btn-primary:hover { background: var(--gold-light); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(201,168,76,0.3); }
.btn-outline {
  background: transparent; color: var(--gold);
  border-color: rgba(201,168,76,0.4);
}
.btn-outline:hover { background: var(--gold-dim); border-color: var(--gold); }
.btn-lg { padding: 14px 32px; font-size: 1rem; border-radius: var(--radius-md); }
.btn-sm { padding: 7px 16px; font-size: 0.8rem; }
.btn-full { width: 100%; }
.btn-disabled { background: var(--bg-card2); color: var(--text-muted); cursor: not-allowed; border-color: var(--border); }

/* ── Navbar ── */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  padding: 0 24px; height: 70px;
  background: rgba(13,13,18,0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}
.navbar.scrolled { background: rgba(13,13,18,0.98); }

.nav-container {
  max-width: 1200px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  height: 100%;
}
.nav-logo { display: flex; align-items: center; }
.logo-b { font-family: 'Playfair Display', serif; font-size: 1.8rem; font-weight: 700; color: var(--gold); }
.logo-73 { font-family: 'Playfair Display', serif; font-size: 1.8rem; font-weight: 400; color: var(--text-primary); }

.nav-links { display: flex; gap: 32px; list-style: none; }
.nav-links a {
  color: var(--text-secondary); font-size: 0.9rem; font-weight: 500;
  transition: var(--transition); position: relative; padding: 4px 0;
}
.nav-links a::after {
  content: ''; position: absolute; bottom: 0; left: 0; width: 0; height: 1px;
  background: var(--gold); transition: var(--transition);
}
.nav-links a:hover, .nav-links a.active { color: var(--text-primary); }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }

.nav-actions { display: flex; gap: 16px; align-items: center; }
.cart-btn {
  position: relative; display: flex; align-items: center; justify-content: center;
  width: 42px; height: 42px; border-radius: 50%;
  background: var(--bg-card2); color: var(--text-primary);
  border: 1px solid var(--border); transition: var(--transition);
}
.cart-btn:hover { background: var(--gold-dim); border-color: var(--gold); color: var(--gold); }
.cart-count {
  position: absolute; top: -4px; right: -4px;
  background: var(--gold); color: #0d0d12;
  border-radius: 50%; width: 18px; height: 18px;
  font-size: 0.65rem; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}

.nav-toggle {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; padding: 4px;
}
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--text-primary); border-radius: 2px; transition: var(--transition); }

/* ── Flash Messages ── */
.flash {
  position: fixed; top: 80px; right: 24px; z-index: 9999;
  padding: 14px 20px; border-radius: var(--radius-sm);
  font-size: 0.875rem; font-weight: 500;
  animation: slideIn 0.3s ease;
  max-width: 350px;
}
.flash-success { background: rgba(16,185,129,0.15); border: 1px solid rgba(16,185,129,0.4); color: #34d399; }
.flash-error   { background: rgba(239,68,68,0.15);  border: 1px solid rgba(239,68,68,0.4);  color: #f87171; }
@keyframes slideIn { from { transform: translateX(120%); opacity: 0; } to { transform: translateX(0); opacity: 1; } }

/* ── Hero ── */
.hero {
  position: relative; min-height: 100vh;
  display: flex; align-items: center; overflow: hidden;
  padding-top: 70px;
}
.hero-bg {
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at 30% 60%, rgba(201,168,76,0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 80% 20%, rgba(99,102,241,0.08) 0%, transparent 50%),
              linear-gradient(180deg, #0d0d12 0%, #111118 100%);
}
.hero-content {
  position: relative; z-index: 2;
  max-width: 600px; padding: 0 24px 0 calc((100vw - 1200px) / 2 + 24px);
}
@media (max-width: 1248px) { .hero-content { padding-left: 24px; } }

.hero-badge {
  display: inline-block; padding: 6px 16px; border-radius: 100px;
  background: var(--gold-dim); border: 1px solid rgba(201,168,76,0.3);
  color: var(--gold); font-size: 0.8rem; font-weight: 600; letter-spacing: 1px;
  text-transform: uppercase; margin-bottom: 24px;
}
.hero-title {
  font-family: 'Playfair Display', serif;
  font-size: clamp(3rem, 7vw, 5.5rem); font-weight: 700;
  line-height: 1.1; margin-bottom: 20px; color: var(--text-primary);
}
.hero-accent { color: var(--gold); }
.hero-subtitle { font-size: 1.15rem; color: var(--text-secondary); margin-bottom: 40px; max-width: 480px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

.hero-decoration { position: absolute; right: 5%; top: 50%; transform: translateY(-50%); z-index: 1; }
.hero-circle {
  position: absolute; border-radius: 50%;
  background: radial-gradient(circle, rgba(201,168,76,0.15), transparent);
  border: 1px solid rgba(201,168,76,0.08);
}
.hero-circle.c1 { width: 450px; height: 450px; top: -225px; right: -50px; }
.hero-circle.c2 { width: 300px; height: 300px; top: -80px; right: 80px; animation: pulse 4s ease-in-out infinite; }
.hero-circle.c3 { width: 180px; height: 180px; top: 10px; right: 170px; animation: pulse 4s ease-in-out 1s infinite; }
@keyframes pulse { 0%,100% { transform: scale(1); opacity: 1; } 50% { transform: scale(1.05); opacity: 0.7; } }

/* ── Categories Bar ── */
.categories-bar { padding: 24px 0; border-bottom: 1px solid var(--border); }
.categories-scroll { display: flex; gap: 12px; overflow-x: auto; padding-bottom: 4px; }
.categories-scroll::-webkit-scrollbar { height: 3px; }
.cat-chip {
  display: inline-block; padding: 8px 20px; border-radius: 100px;
  background: var(--bg-card); border: 1px solid var(--border);
  font-size: 0.85rem; white-space: nowrap;
  transition: var(--transition); color: var(--text-secondary);
}
.cat-chip:hover { background: var(--gold-dim); border-color: var(--gold); color: var(--gold); }

/* ── Section Headers ── */
.section-header { text-align: center; margin-bottom: 48px; }
.section-label {
  display: block; font-size: 0.8rem; font-weight: 600; letter-spacing: 2px;
  text-transform: uppercase; color: var(--gold); margin-bottom: 12px;
}
.section-title {
  font-family: 'Playfair Display', serif; font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700; color: var(--text-primary);
}
.section-cta { text-align: center; margin-top: 48px; }

/* ── Products Grid ── */
.featured-section { padding: 80px 0; }
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}

.product-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-md); overflow: hidden;
  transition: var(--transition);
}
.product-card:hover { border-color: rgba(201,168,76,0.3); transform: translateY(-4px); box-shadow: var(--shadow-md); }

.product-img-wrap { position: relative; aspect-ratio: 3/4; overflow: hidden; background: var(--bg-card2); }
.product-img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.product-card:hover .product-img { transform: scale(1.05); }

.product-overlay {
  position: absolute; inset: 0; background: rgba(0,0,0,0.5);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; transition: var(--transition);
}
.product-card:hover .product-overlay { opacity: 1; }
.overlay-btn {
  padding: 10px 24px; background: var(--gold); color: #0d0d12;
  border-radius: var(--radius-sm); font-weight: 600; font-size: 0.875rem;
  transition: var(--transition);
}
.overlay-btn:hover { background: var(--gold-light); transform: scale(1.05); }

.badge-low-stock {
  position: absolute; top: 12px; left: 12px;
  background: rgba(239,68,68,0.9); color: white;
  padding: 4px 10px; border-radius: 100px; font-size: 0.7rem; font-weight: 600;
}

.product-info { padding: 18px; }
.product-category { font-size: 0.75rem; color: var(--gold); font-weight: 600; text-transform: uppercase; letter-spacing: 0.8px; }
.product-name { font-size: 1rem; font-weight: 600; margin: 6px 0 12px; color: var(--text-primary); line-height: 1.4; }
.product-footer { display: flex; align-items: center; justify-content: space-between; }
.product-price { font-size: 1.1rem; font-weight: 700; color: var(--gold); }
.add-to-cart-btn {
  width: 36px; height: 36px; border-radius: 50%; border: none;
  background: var(--gold-dim); color: var(--gold);
  display: flex; align-items: center; justify-content: center;
  transition: var(--transition);
}
.add-to-cart-btn:hover { background: var(--gold); color: #0d0d12; transform: scale(1.1); }

/* ── Values Section ── */
.values-section { padding: 60px 0; border-top: 1px solid var(--border); }
.values-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 24px; }
.value-card {
  text-align: center; padding: 32px 20px;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-md); transition: var(--transition);
}
.value-card:hover { border-color: rgba(201,168,76,0.3); transform: translateY(-4px); }
.value-icon { font-size: 2rem; margin-bottom: 12px; }
.value-card h3 { font-size: 1rem; font-weight: 600; margin-bottom: 6px; }
.value-card p { font-size: 0.85rem; color: var(--text-secondary); }

/* ── Page Hero SM ── */
.page-hero-sm {
  padding: 120px 0 48px; text-align: center;
  background: linear-gradient(180deg, rgba(201,168,76,0.05) 0%, transparent 100%);
  border-bottom: 1px solid var(--border);
}
.page-title { font-family: 'Playfair Display', serif; font-size: 2.5rem; font-weight: 700; }
.page-subtitle { color: var(--text-secondary); margin-top: 8px; }

/* ── Shop Section ── */
.shop-section { padding: 48px 0 80px; }
.shop-toolbar { display: flex; gap: 12px; margin-bottom: 32px; flex-wrap: wrap; align-items: center; }
.filter-form { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.filter-input, .filter-select {
  padding: 10px 16px; border-radius: var(--radius-sm);
  background: var(--bg-card); border: 1px solid var(--border);
  color: var(--text-primary); font-size: 0.875rem; font-family: inherit;
  transition: var(--transition);
}
.filter-input:focus, .filter-select:focus { outline: none; border-color: var(--gold); }
.filter-input { min-width: 220px; }
.filter-select { appearance: none; cursor: pointer; }

/* ── Empty State ── */
.empty-state { text-align: center; padding: 80px 20px; }
.empty-icon { font-size: 4rem; margin-bottom: 20px; }
.empty-state h3 { font-size: 1.5rem; margin-bottom: 8px; }
.empty-state p { color: var(--text-secondary); margin-bottom: 24px; }

/* ── Pagination ── */
.pagination-wrap { margin-top: 40px; display: flex; justify-content: center; }

/* ── Product Detail ── */
.product-detail-section { padding: 100px 0 80px; }
.breadcrumb { display: flex; gap: 8px; align-items: center; margin-bottom: 40px; font-size: 0.85rem; color: var(--text-secondary); }
.breadcrumb a:hover { color: var(--gold); }
.breadcrumb span:not(last-child) { color: var(--text-muted); }

.product-detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; margin-bottom: 80px; }
.img-container { border-radius: var(--radius-lg); overflow: hidden; aspect-ratio: 3/4; background: var(--bg-card); }
.detail-img { width: 100%; height: 100%; object-fit: cover; }

.product-detail-info { display: flex; flex-direction: column; gap: 20px; padding-top: 8px; }
.detail-title { font-family: 'Playfair Display', serif; font-size: 2.2rem; font-weight: 700; line-height: 1.2; }
.detail-price { font-size: 1.8rem; font-weight: 700; color: var(--gold); }
.stock-indicator { display: flex; align-items: center; gap: 8px; font-size: 0.875rem; }
.in-stock { color: var(--accent-green); }
.out-of-stock { color: var(--accent-red); }
.detail-description { color: var(--text-secondary); line-height: 1.8; }

.qty-group { display: flex; flex-direction: column; gap: 8px; margin-bottom: 16px; }
.qty-group label { font-size: 0.875rem; font-weight: 600; }
.qty-control { display: flex; gap: 0; border: 1px solid var(--border); border-radius: var(--radius-sm); overflow: hidden; width: fit-content; }
.qty-btn {
  width: 40px; height: 42px; border: none; background: var(--bg-card2);
  color: var(--text-primary); font-size: 1.2rem; transition: var(--transition);
}
.qty-btn:hover { background: var(--gold-dim); color: var(--gold); }
.qty-input {
  width: 60px; text-align: center; border: none; border-left: 1px solid var(--border);
  border-right: 1px solid var(--border); background: var(--bg-card);
  color: var(--text-primary); font-size: 1rem; font-family: inherit;
}
.qty-input:focus { outline: none; }
.qty-input-sm { width: 50px; }

.detail-features { display: flex; flex-direction: column; gap: 8px; padding-top: 8px; }
.feature-item { display: flex; gap: 10px; font-size: 0.875rem; color: var(--text-secondary); }
.feature-item span { color: var(--accent-green); }

.related-section { margin-top: 60px; }
.related-grid { grid-template-columns: repeat(4, 1fr); }

/* ── Cart ── */
.cart-section { padding: 48px 0 80px; }
.cart-layout { display: grid; grid-template-columns: 1fr 360px; gap: 32px; align-items: start; }
.cart-items { display: flex; flex-direction: column; gap: 16px; }

.cart-item {
  display: grid; grid-template-columns: 80px 1fr auto auto;
  gap: 20px; align-items: center; padding: 20px;
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-md);
  transition: var(--transition);
}
.cart-item:hover { border-color: rgba(201,168,76,0.2); }
.cart-item-img { width: 80px; height: 80px; object-fit: cover; border-radius: var(--radius-sm); }
.cart-item-name { font-weight: 600; margin-bottom: 4px; }
.cart-item-name a:hover { color: var(--gold); }
.cart-item-category { font-size: 0.8rem; color: var(--gold); }
.cart-item-price { font-weight: 500; color: var(--text-secondary); margin-top: 4px; }
.cart-item-actions { display: flex; flex-direction: column; gap: 8px; align-items: center; }
.qty-form { display: flex; flex-direction: column; align-items: center; gap: 6px; }
.btn-link { background: none; border: none; color: var(--gold); font-size: 0.8rem; text-decoration: underline; }
.remove-btn { background: none; border: none; color: var(--accent-red); font-size: 0.8rem; text-decoration: underline; }
.cart-item-subtotal { font-size: 1.1rem; font-weight: 700; color: var(--gold); white-space: nowrap; }
.cart-actions { display: flex; gap: 12px; padding-top: 8px; }

/* ── Summary Card ── */
.summary-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-md); padding: 28px; position: sticky; top: 90px;
}
.summary-title { font-family: 'Playfair Display', serif; font-size: 1.3rem; font-weight: 700; margin-bottom: 20px; }
.summary-row { display: flex; justify-content: space-between; font-size: 0.95rem; margin-bottom: 12px; }
.summary-total { font-size: 1.1rem; font-weight: 700; color: var(--gold); margin-top: 4px; }
.summary-divider { border: none; border-top: 1px solid var(--border); margin: 16px 0; }
.free-shipping-note { font-size: 0.8rem; color: var(--gold); margin-bottom: 16px; }
.checkout-btn { margin-top: 20px; }
.text-green { color: var(--accent-green); }

/* ── Checkout ── */
.checkout-section { padding: 48px 0 80px; }
.checkout-layout { display: grid; grid-template-columns: 1fr 380px; gap: 40px; align-items: start; }
.form-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-md); padding: 36px;
}
.form-section-title { font-family: 'Playfair Display', serif; font-size: 1.4rem; font-weight: 700; margin-bottom: 28px; }
.form-group { display: flex; flex-direction: column; gap: 6px; margin-bottom: 20px; }
.form-group label { font-size: 0.875rem; font-weight: 600; color: var(--text-secondary); }
.form-input {
  padding: 12px 16px; border-radius: var(--radius-sm);
  background: var(--bg-card2); border: 1px solid var(--border);
  color: var(--text-primary); font-size: 0.95rem; font-family: inherit;
  transition: var(--transition);
}
.form-input:focus { outline: none; border-color: var(--gold); box-shadow: 0 0 0 3px rgba(201,168,76,0.1); }
.form-input.error { border-color: var(--accent-red); }
.form-textarea { resize: vertical; min-height: 90px; }
.form-error { color: var(--accent-red); font-size: 0.8rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.checkout-note { text-align: center; margin-top: 16px; font-size: 0.85rem; color: var(--text-secondary); }
.order-item-row { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; }
.order-item-left { display: flex; align-items: center; gap: 12px; }
.order-item-img { width: 52px; height: 52px; object-fit: cover; border-radius: var(--radius-sm); }
.order-item-name { font-size: 0.9rem; font-weight: 600; }
.order-item-qty { font-size: 0.8rem; color: var(--text-muted); }
.order-item-price { font-weight: 600; }

/* ── Success Page ── */
.success-section { min-height: 100vh; display: flex; align-items: center; padding: 100px 0 60px; }
.success-card {
  max-width: 600px; margin: 0 auto;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 48px 40px; text-align: center;
}
.success-animation { margin-bottom: 24px; }
.checkmark-circle { display: inline-block; width: 72px; height: 72px; }
.checkmark { width: 72px; height: 72px; border-radius: 50%; display: block; }
.checkmark-circle-bg { stroke: var(--gold); stroke-width: 2; stroke-dasharray: 166; stroke-dashoffset: 166; animation: stroke 0.6s ease forwards; }
.checkmark-check { stroke: var(--gold); stroke-width: 2.5; stroke-dasharray: 48; stroke-dashoffset: 48; animation: stroke 0.3s ease 0.4s forwards; }
@keyframes stroke { to { stroke-dashoffset: 0; } }

.success-badge { display: inline-block; padding: 6px 18px; border-radius: 100px; background: rgba(16,185,129,0.15); color: var(--accent-green); font-size: 0.8rem; font-weight: 600; margin-bottom: 16px; }
.success-title { font-family: 'Playfair Display', serif; font-size: 2rem; font-weight: 700; margin-bottom: 8px; }
.success-subtitle { color: var(--text-secondary); margin-bottom: 24px; }
.order-number-display { display: inline-flex; flex-direction: column; gap: 4px; background: var(--bg-card2); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 16px 32px; margin-bottom: 24px; }
.order-number-display span { font-size: 0.75rem; color: var(--text-muted); }
.order-number-display strong { font-size: 1.2rem; color: var(--gold); letter-spacing: 1px; }

.order-summary-box { background: var(--bg-card2); border-radius: var(--radius-sm); padding: 20px; margin-bottom: 20px; text-align: left; }
.order-summary-box h3 { font-size: 0.9rem; font-weight: 700; margin-bottom: 16px; color: var(--text-secondary); }
.summary-order-row { display: flex; justify-content: space-between; font-size: 0.9rem; margin-bottom: 10px; }
.summary-total { font-weight: 700; color: var(--gold); font-size: 1rem; margin-top: 4px; }

.delivery-info { background: var(--bg-card2); border-radius: var(--radius-sm); padding: 16px; margin-bottom: 24px; text-align: left; }
.delivery-row { display: flex; gap: 10px; font-size: 0.875rem; margin-bottom: 8px; color: var(--text-secondary); }

.whatsapp-cta { margin-bottom: 24px; }
.whatsapp-cta p { font-size: 0.875rem; color: var(--text-secondary); margin-bottom: 12px; }

.btn-whatsapp {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  padding: 12px 28px; border-radius: var(--radius-sm);
  background: #25D366; color: white; font-weight: 700; font-size: 0.95rem;
  border: none; transition: var(--transition); cursor: pointer;
}
.btn-whatsapp:hover { background: #128C7E; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(37,211,102,0.3); }
.btn-whatsapp.btn-full { width: 100%; }

.success-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* ── Footer ── */
.footer { border-top: 1px solid var(--border); padding: 48px 0 24px; margin-top: 60px; }
.footer-inner { max-width: 1200px; margin: 0 auto; padding: 0 24px; display: flex; flex-direction: column; align-items: center; gap: 24px; text-align: center; }
.footer-brand p { color: var(--text-secondary); font-size: 0.875rem; margin-top: 8px; }
.footer-links { display: flex; gap: 32px; }
.footer-links a { color: var(--text-secondary); font-size: 0.875rem; transition: var(--transition); }
.footer-links a:hover { color: var(--gold); }
.footer-copy { color: var(--text-muted); font-size: 0.8rem; }

/* ── Mobile Nav Open State ── */
.nav-links.open {
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 70px; left: 0; right: 0;
  background: rgba(13,13,18,0.98);
  backdrop-filter: blur(20px);
  padding: 20px 24px 28px;
  gap: 0;
  border-bottom: 1px solid var(--border);
  z-index: 999;
  animation: navSlide 0.25s ease;
}
.nav-links.open li { border-bottom: 1px solid var(--border); }
.nav-links.open li:last-child { border-bottom: none; }
.nav-links.open a { padding: 16px 0; display: block; font-size: 1rem; }

@keyframes navSlide {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Hamburger → X animation */
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.nav-toggle span { transition: transform 0.25s ease, opacity 0.2s ease; }

/* ── Responsive ── */

/* Large tablets (≤ 1024px) */
@media (max-width: 1024px) {
  .hero-content { max-width: 500px; }
  .hero-title   { font-size: clamp(2.5rem, 6vw, 4rem); }
  .product-detail-grid { gap: 40px; }
}

/* Tablets (≤ 900px) */
@media (max-width: 900px) {
  .product-detail-grid  { grid-template-columns: 1fr; gap: 32px; }
  .cart-layout          { grid-template-columns: 1fr; }
  .checkout-layout      { grid-template-columns: 1fr; }
  .form-row             { grid-template-columns: 1fr; }
  .related-grid         { grid-template-columns: repeat(2, 1fr); }
  .values-grid          { grid-template-columns: repeat(2, 1fr); }
}

/* Mobile (≤ 768px) */
@media (max-width: 768px) {
  /* ── Nav ── */
  .nav-links  { display: none; }
  .nav-toggle { display: flex; }

  /* ── Flash messages ── */
  .flash {
    left: 16px; right: 16px;
    max-width: none;
    top: 80px;
  }

  /* ── Hero ── */
  .hero { min-height: 85vh; padding-top: 80px; }
  .hero-content { padding: 0 20px; max-width: 100%; }
  .hero-title   { font-size: clamp(2.2rem, 10vw, 3.5rem); }
  .hero-subtitle { font-size: 1rem; margin-bottom: 28px; }
  .hero-actions { flex-direction: column; gap: 12px; }
  .hero-actions .btn { width: 100%; text-align: center; }
  .hero-decoration { display: none; }

  /* ── Categories ── */
  .categories-bar { padding: 16px 0; }
  .categories-scroll { padding: 0 16px 6px; }

  /* ── Section headers ── */
  .section-header { margin-bottom: 32px; }

  /* ── Products grid ── */
  .featured-section { padding: 48px 0; }
  .products-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .product-img-wrap { aspect-ratio: 3/4; }
  .product-info { padding: 12px; }
  .product-name { font-size: 0.875rem; }
  .product-price { font-size: 0.95rem; }

  /* ── Page hero ── */
  .page-hero-sm { padding: 100px 0 32px; }
  .page-title   { font-size: 1.8rem; }

  /* ── Filter / shop toolbar ── */
  .shop-toolbar  { flex-direction: column; }
  .filter-form   { flex-direction: column; width: 100%; }
  .filter-input  { min-width: unset; width: 100%; }
  .filter-select { width: 100%; }
  .filter-form .btn { width: 100%; }

  /* ── Product detail ── */
  .product-detail-section { padding: 80px 0 48px; }
  .product-detail-grid    { grid-template-columns: 1fr; gap: 24px; }
  .detail-title  { font-size: 1.6rem; }
  .detail-price  { font-size: 1.4rem; }
  .breadcrumb    { flex-wrap: wrap; font-size: 0.8rem; margin-bottom: 24px; }
  .related-section { margin-top: 40px; }
  .related-grid  { grid-template-columns: repeat(2, 1fr); }

  /* ── Cart ── */
  .cart-section { padding: 32px 0 60px; }
  .cart-layout  { grid-template-columns: 1fr; gap: 24px; }
  .cart-item {
    grid-template-columns: 70px 1fr;
    grid-template-rows: auto auto;
    gap: 12px 14px;
    padding: 14px;
  }
  .cart-item-actions  { grid-column: 2; }
  .cart-item-subtotal {
    grid-column: 1 / -1;
    text-align: right;
    font-size: 1rem;
    padding-top: 4px;
    border-top: 1px solid var(--border);
  }
  .cart-actions { flex-direction: column; }
  .cart-actions .btn { width: 100%; text-align: center; }
  .summary-card { position: static; }

  /* ── Checkout ── */
  .checkout-section { padding: 32px 0 60px; }
  .checkout-layout  { grid-template-columns: 1fr; gap: 24px; }
  /* Move order summary above the form on mobile */
  .checkout-layout { display: flex; flex-direction: column-reverse; }
  .form-card  { padding: 24px 20px; }
  .form-row   { grid-template-columns: 1fr; }

  /* ── Values section ── */
  .values-section { padding: 40px 0; }
  .values-grid    { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .value-card     { padding: 22px 14px; }
  .value-icon     { font-size: 1.6rem; }
  .value-card h3  { font-size: 0.9rem; }

  /* ── Success page ── */
  .success-card   { padding: 32px 20px; margin: 0 16px; }
  .success-title  { font-size: 1.6rem; }
  .success-actions { flex-direction: column; }
  .success-actions .btn { width: 100%; text-align: center; }

  /* ── Footer ── */
  .footer { padding: 32px 0 20px; margin-top: 40px; }
  .footer-links { gap: 20px; flex-wrap: wrap; justify-content: center; }

  /* ── Container padding ── */
  .container { padding: 0 16px; }
}

/* Extra small (≤ 400px) */
@media (max-width: 400px) {
  .products-grid { grid-template-columns: 1fr; }
  .related-grid  { grid-template-columns: 1fr; }
  .hero-title    { font-size: 2rem; }
  .values-grid   { grid-template-columns: 1fr; }
}