/* ============================================================
   DESIGN SYSTEM — Cart.lk Gray Electro (Stitch)
   Color: Slate-Gray Primary · Clean White Surface
   Fonts: Hanken Grotesk (headlines) · Inter (body) · JetBrains Mono (labels)
   Shape: Soft 2px-12px radius · 1px border separators
   Icons: Material Symbols Outlined
   ============================================================ */

/* ─── Google Fonts ──────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Hanken+Grotesk:wght@400;500;600;700;800&family=Inter:wght@400;500;600&family=JetBrains+Mono:wght@500&display=swap');

/* ─── Material Symbols ──────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:wght,FILL@100..700,0..1&display=swap');

/* ─── Design Tokens ─────────────────────────────────────────── */
:root {
  /* Primary */
  --primary: #091426;
  --primary-container: #1e293b;
  --on-primary: #ffffff;
  --on-primary-container: #8590a6;

  /* Surface */
  --surface: #f7f9fb;
  --surface-bright: #f7f9fb;
  --surface-container-lowest: #ffffff;
  --surface-container-low: #f2f4f6;
  --surface-container: #eceef0;
  --surface-container-high: #e6e8ea;
  --surface-container-highest: #e0e3e5;
  --on-surface: #191c1e;
  --on-surface-variant: #45474c;

  /* Secondary */
  --secondary: #595f66;
  --secondary-container: #dde3eb;
  --on-secondary: #ffffff;
  --on-secondary-container: #5f656c;

  /* Tertiary */
  --tertiary: #041528;
  --tertiary-container: #1a2a3e;
  --on-tertiary: #ffffff;
  --on-tertiary-container: #8191a9;

  /* Outline */
  --outline: #75777d;
  --outline-variant: #c5c6cd;

  /* Inverse */
  --inverse-surface: #2d3133;
  --inverse-on-surface: #eff1f3;
  --inverse-primary: #bcc7de;

  /* Fixed */
  --primary-fixed: #d8e3fb;
  --primary-fixed-dim: #bcc7de;
  --on-primary-fixed: #111c2d;

  /* Tint */
  --surface-tint: #545f73;
  --surface-variant: #e0e3e5;

  /* Feedback */
  --error: #ba1a1a;
  --error-container: #ffdad6;
  --on-error: #ffffff;
  --on-error-container: #93000a;
  --success: #22c55e;
  --success-container: #dcfce7;
  --warning: #f59e0b;

  /* Radius — Soft geometric (Stitch) */
  --r-xs: 0.125rem;
  --r-sm: 0.125rem;
  --r-md: 0.25rem;
  --r-lg: 0.5rem;
  --r-xl: 0.75rem;
  --r-full: 9999px;

  /* Spacing — 8px base unit */
  --sp-xs: 4px;
  --sp-sm: 12px;
  --sp-md: 24px;
  --sp-lg: 48px;
  --sp-xl: 80px;
  --sp-base: 8px;
  --gutter: 24px;
  --container-max: 1280px;
  --margin-mobile: 16px;

  /* Typography */
  --ff-display: 'Hanken Grotesk', sans-serif;
  --ff-body: 'Inter', sans-serif;
  --ff-label: 'JetBrains Mono', monospace;

  /* Shadows — subtle elevation */
  --shadow-sm: 0 1px 2px rgba(0,0,0,.04);
  --shadow-md: 0 4px 12px rgba(0,0,0,.05);
  --shadow-lg: 0 8px 24px rgba(0,0,0,.06);
}

/* ─── Reset & Base ──────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--ff-body);
  background: var(--surface);
  color: var(--on-surface);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); text-decoration: none; transition: opacity .2s; }
a:hover { opacity: .8; }

/* ─── Typography ────────────────────────────────────────────── */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--ff-display);
  color: var(--primary);
  line-height: 1.25;
  font-weight: 600;
}

.text-display-lg      { font-family: var(--ff-display); font-size: 48px; line-height: 56px; letter-spacing: -0.02em; font-weight: 700; }
.text-display-lg-mob  { font-family: var(--ff-display); font-size: 32px; line-height: 40px; letter-spacing: -0.01em; font-weight: 700; }
.text-headline-md     { font-family: var(--ff-display); font-size: 24px; line-height: 32px; font-weight: 600; }
.text-headline-sm     { font-family: var(--ff-display); font-size: 20px; line-height: 28px; font-weight: 600; }
.text-body-lg         { font-family: var(--ff-body); font-size: 18px; line-height: 28px; }
.text-body-md         { font-family: var(--ff-body); font-size: 16px; line-height: 24px; }
.text-body-sm         { font-family: var(--ff-body); font-size: 14px; line-height: 20px; }
.text-label-md        { font-family: var(--ff-label); font-size: 12px; line-height: 16px; letter-spacing: 0.05em; font-weight: 500; }
.text-button          { font-family: var(--ff-display); font-size: 14px; line-height: 20px; letter-spacing: 0.01em; font-weight: 600; }

/* ─── Material Symbols ──────────────────────────────────────── */
.material-symbols-outlined {
  font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
  vertical-align: middle;
  font-size: 20px;
}

/* ─── Utility: Scrollbar Hide ───────────────────────────────── */
.hide-scrollbar::-webkit-scrollbar { display: none; }
.hide-scrollbar { -ms-overflow-style: none; scrollbar-width: none; }

/* ─── Layout Shell ──────────────────────────────────────────── */
.app-layout {
  max-width: var(--container-max);
  margin: 0 auto;
  display: flex;
  gap: var(--gutter);
  padding: var(--sp-md) var(--gutter);
  min-height: calc(100vh - 120px);
}

.app-content {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: var(--sp-lg);
}

/* ─── Header ────────────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--surface-container-lowest);
  border-bottom: 1px solid var(--outline-variant);
}

.header-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--sp-sm) 0;
  gap: var(--sp-md);
}

.header-brand-wrapper {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
}

.header-menu-btn {
  display: none;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  color: var(--primary);
  cursor: pointer;
  padding: 4px;
  transition: opacity .2s;
}
.header-menu-btn:hover { opacity: .7; }

.mobile-search-btn {
  display: none;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  color: var(--primary);
  cursor: pointer;
  padding: 4px;
  transition: opacity .2s;
}
.mobile-search-btn:hover { opacity: .7; }

.mobile-search-container {
  display: none;
}

.mobile-search-container form {
  position: relative;
  width: 100%;
  display: flex;
}

.mobile-search-container input {
  width: 100%;
  background: var(--surface-container-low);
  border: 1px solid var(--outline-variant);
  padding: var(--sp-xs) var(--sp-md);
  padding-right: 48px;
  font-family: var(--ff-body);
  font-size: 16px;
  color: var(--on-surface);
  outline: none;
  border-radius: var(--r-sm);
  transition: border-color .2s;
}
.mobile-search-container input:focus { border-color: var(--primary-container); }
.mobile-search-container input::placeholder { color: var(--on-surface-variant); }

.header-brand {
  font-family: var(--ff-display);
  font-size: 24px;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: -0.01em;
}
.header-brand a { color: inherit; }

/* Search bar */
.header-search {
  flex: 1;
  max-width: 560px;
  position: relative;
  display: none;
}
@media (min-width: 768px) { .header-search { display: flex; } }

.header-search input {
  width: 100%;
  background: var(--surface-container-low);
  border: 1px solid var(--outline-variant);
  padding: var(--sp-xs) var(--sp-md);
  padding-right: 48px;
  font-family: var(--ff-body);
  font-size: 16px;
  color: var(--on-surface);
  outline: none;
  border-radius: var(--r-sm);
  transition: border-color .2s;
}
.header-search input:focus { border-color: var(--primary-container); }
.header-search input::placeholder { color: var(--on-surface-variant); }

.header-search-btn {
  position: absolute;
  right: 0;
  top: 0;
  height: 100%;
  padding: 0 var(--sp-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-container);
  color: var(--on-primary);
  border: none;
  cursor: pointer;
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
}

/* Header icons */
.header-icons {
  display: flex;
  align-items: center;
  gap: var(--sp-md);
  color: var(--primary);
}

.header-icon-btn {
  position: relative;
  background: none;
  border: none;
  color: var(--primary);
  cursor: pointer;
  padding: 4px;
  transition: opacity .2s;
}
.header-icon-btn:hover { opacity: .7; }

.header-icon-badge {
  position: absolute;
  top: -4px;
  right: -4px;
  background: var(--primary);
  color: white;
  font-size: 10px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
}

/* Desktop nav links row */
.header-nav {
  display: none;
  align-items: center;
  gap: var(--sp-md);
  padding: var(--sp-sm) 0;
  overflow-x: auto;
  white-space: nowrap;
}
@media (min-width: 768px) { .header-nav { display: flex; } }

.header-nav a {
  font-family: var(--ff-body);
  font-size: 16px;
  color: var(--on-surface-variant);
  padding-bottom: 4px;
  border-bottom: 2px solid transparent;
  transition: color .2s, border-color .2s;
}
.header-nav a:hover,
.header-nav a.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
  font-weight: 600;
  opacity: 1;
}

/* ─── Sidebar ───────────────────────────────────────────────── */
.sidebar {
  display: none;
  width: 240px;
  flex-shrink: 0;
  position: sticky;
  top: 112px;
  height: calc(100vh - 112px);
  overflow-y: auto;
  border-right: 1px solid var(--outline-variant);
  padding-right: var(--sp-md);
}
@media (min-width: 1024px) { .sidebar { display: flex; flex-direction: column; } }

.sidebar-title {
  padding: var(--sp-md) 0;
  border-bottom: 1px solid var(--outline-variant);
  margin-bottom: var(--sp-md);
}
.sidebar-title h2 {
  font-size: 20px;
  margin-bottom: 4px;
}
.sidebar-title p {
  font-size: 14px;
  color: var(--on-surface-variant);
}

.sidebar-links { display: flex; flex-direction: column; gap: var(--sp-xs); }

.sidebar-link {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
  padding: var(--sp-xs) var(--sp-sm);
  color: var(--on-surface-variant);
  font-family: var(--ff-label);
  font-size: 12px;
  letter-spacing: 0.05em;
  font-weight: 500;
  transition: background .2s, color .2s;
  border-radius: var(--r-sm);
  text-transform: uppercase;
}
.sidebar-link:hover { background: var(--surface-container-low); color: var(--primary); opacity: 1; }
.sidebar-link.active {
  background: var(--surface-container-high);
  color: var(--primary);
  font-weight: 600;
}

.sidebar-cta {
  margin-top: var(--sp-xl);
  padding: var(--sp-md);
  background: var(--surface-container);
  border-radius: var(--r-lg);
  text-align: center;
}
.sidebar-cta p { font-size: 14px; margin-bottom: var(--sp-md); }

/* ─── Buttons ───────────────────────────────────────────────── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-sm);
  padding: var(--sp-xs) var(--sp-md);
  background: var(--primary);
  color: var(--on-primary);
  font-family: var(--ff-display);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.01em;
  border: none;
  border-radius: var(--r-sm);
  cursor: pointer;
  transition: background .2s, transform .15s;
  width: 100%;
  text-align: center;
}
.btn-primary:hover { background: var(--primary-container); opacity: 1; color: var(--on-primary); }

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-sm);
  padding: var(--sp-xs) var(--sp-md);
  background: transparent;
  color: var(--primary);
  font-family: var(--ff-display);
  font-size: 14px;
  font-weight: 600;
  border: 1px solid var(--outline-variant);
  border-radius: var(--r-sm);
  cursor: pointer;
  transition: background .2s;
}
.btn-secondary:hover { background: var(--surface-container-low); opacity: 1; }

.btn-danger-sm {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 6px 10px;
  background: var(--error-container);
  color: var(--on-error-container);
  font-size: 14px;
  border: none;
  border-radius: var(--r-sm);
  cursor: pointer;
  transition: background .2s;
}
.btn-danger-sm:hover { background: var(--error); color: var(--on-error); }

.btn-disabled {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--sp-xs) var(--sp-md);
  background: var(--surface-container);
  color: var(--on-surface-variant);
  font-size: 14px;
  font-weight: 600;
  border: none;
  border-radius: var(--r-sm);
  cursor: not-allowed;
  opacity: .6;
}

/* ─── Cards ─────────────────────────────────────────────────── */
.card {
  background: var(--surface-container-lowest);
  border: 1px solid var(--outline-variant);
  border-radius: var(--r-lg);
  padding: var(--sp-md);
}

/* ─── Hero Banner ───────────────────────────────────────────── */
.hero-banner {
  position: relative;
  width: 100%;
  aspect-ratio: 21/9;
  overflow: hidden;
  border-radius: var(--r-lg);
  background: var(--primary-container);
}
@media (max-width: 768px) { .hero-banner { aspect-ratio: 16/9; } }

.hero-banner img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .5;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, var(--primary-container), rgba(30,41,59,.6), transparent);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--sp-lg);
}

.hero-badge {
  display: inline-block;
  width: fit-content;
  background: var(--primary-fixed);
  color: var(--on-primary-fixed);
  font-family: var(--ff-label);
  font-size: 12px;
  letter-spacing: 0.05em;
  font-weight: 500;
  padding: var(--sp-xs) var(--sp-sm);
  text-transform: uppercase;
  margin-bottom: var(--sp-sm);
  border-radius: var(--r-xs);
}

.hero-banner h1 {
  font-family: var(--ff-display);
  font-size: 32px;
  font-weight: 700;
  color: white;
  margin-bottom: var(--sp-sm);
  line-height: 1.2;
  letter-spacing: -0.01em;
}
@media (min-width: 768px) {
  .hero-banner h1 { font-size: 48px; line-height: 56px; letter-spacing: -0.02em; }
}

.hero-desc {
  color: var(--on-primary-container);
  font-size: 18px;
  max-width: 560px;
  margin-bottom: var(--sp-md);
}

.hero-actions { display: flex; gap: var(--sp-md); flex-wrap: wrap; }

.hero-btn-primary {
  padding: var(--sp-sm) var(--sp-lg);
  background: var(--surface);
  color: var(--primary);
  font-family: var(--ff-display);
  font-size: 14px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  border-radius: var(--r-sm);
  transition: background .2s;
}
.hero-btn-primary:hover { background: var(--secondary-container); }

.hero-btn-secondary {
  padding: var(--sp-sm) var(--sp-lg);
  background: transparent;
  color: white;
  font-family: var(--ff-display);
  font-size: 14px;
  font-weight: 600;
  border: 1px solid white;
  cursor: pointer;
  border-radius: var(--r-sm);
  transition: background .2s;
}
.hero-btn-secondary:hover { background: rgba(255,255,255,.1); }

/* ─── Mobile Category Grid ──────────────────────────────────── */
.mobile-categories {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--sp-sm);
}
@media (min-width: 768px) { .mobile-categories { grid-template-columns: repeat(4, 1fr); } }
@media (min-width: 1024px) { .mobile-categories { display: none; } }

.mobile-cat-item {
  background: white;
  border: 1px solid var(--outline-variant);
  padding: var(--sp-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-xs);
  border-radius: var(--r-sm);
  transition: background .2s;
}
.mobile-cat-item:hover { background: var(--surface-container-low); }
.mobile-cat-item .material-symbols-outlined { color: var(--primary); }
.mobile-cat-item span:last-child {
  font-family: var(--ff-display);
  font-size: 14px;
  font-weight: 600;
}

/* ─── Section Headers ───────────────────────────────────────── */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--outline-variant);
  padding-bottom: var(--sp-xs);
  margin-bottom: var(--sp-md);
}
.section-header h2 {
  font-size: 24px;
}
.section-header .section-badge {
  background: var(--error);
  color: white;
  font-family: var(--ff-label);
  font-size: 12px;
  padding: 2px var(--sp-xs);
  border-radius: var(--r-sm);
  margin-left: var(--sp-sm);
}
.section-header .section-link {
  display: flex;
  align-items: center;
  gap: var(--sp-xs);
  font-family: var(--ff-display);
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
}
.section-header .section-link:hover { text-decoration: underline; }

/* ─── Product Grid ──────────────────────────────────────────── */
.product-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--sp-md);
}
@media (min-width: 768px) { .product-grid { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 1280px) { .product-grid { grid-template-columns: repeat(4, 1fr); } }

/* ─── Product Card (Gray Electro) ───────────────────────────── */
.product-card {
  background: white;
  border: 1px solid var(--outline-variant);
  transition: border-color .2s, transform .15s, box-shadow .2s;
  border-radius: var(--r-sm);
  overflow: hidden;
}
.product-card:hover {
  border-color: var(--secondary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.product-card-image {
  display: block;
  position: relative;
  overflow: hidden;
  aspect-ratio: 4/3;
  background: var(--surface-container-low);
}
.product-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .3s;
}
.product-card:hover .product-card-image img { transform: scale(1.05); }

.product-card-image .product-badge {
  position: absolute;
  top: var(--sp-sm);
  right: var(--sp-sm);
  background: var(--primary-container);
  color: white;
  font-family: var(--ff-label);
  font-size: 10px;
  padding: 2px var(--sp-xs);
  border-radius: var(--r-sm);
}

.product-card-body {
  padding: var(--sp-sm);
  display: flex;
  flex-direction: column;
  gap: var(--sp-xs);
}

.product-card-category {
  font-family: var(--ff-label);
  font-size: 12px;
  letter-spacing: 0.05em;
  font-weight: 500;
  color: var(--on-surface-variant);
  text-transform: uppercase;
}

.product-card-title {
  font-family: var(--ff-display);
  font-size: 16px;
  font-weight: 600;
  color: var(--primary);
  line-height: 1.4;
  height: 48px;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}
.product-card-title a { color: inherit; }

.product-card-rating {
  display: flex;
  align-items: center;
  gap: var(--sp-xs);
  color: #eab308;
  font-size: 14px;
}
.product-card-rating .rating-count {
  color: var(--on-surface-variant);
  font-family: var(--ff-label);
  font-size: 12px;
}

.product-card-price {
  display: flex;
  align-items: baseline;
  gap: var(--sp-sm);
}
.product-card-price .current-price {
  font-family: var(--ff-display);
  font-size: 20px;
  font-weight: 600;
  color: var(--primary);
}
.product-card-price .old-price {
  font-size: 14px;
  color: var(--on-surface-variant);
  text-decoration: line-through;
}

.product-card-btn {
  width: 100%;
  margin-top: var(--sp-sm);
  padding: var(--sp-xs) 0;
  background: var(--primary);
  color: white;
  font-family: var(--ff-display);
  font-size: 14px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-sm);
  border-radius: var(--r-sm);
  transition: background .2s;
}
.product-card-btn:hover { background: var(--primary-container); }

/* ─── Product Scroll (horizontal) ───────────────────────────── */
.product-scroll {
  display: flex;
  gap: var(--sp-md);
  overflow-x: auto;
  padding-bottom: var(--sp-sm);
  scroll-snap-type: x mandatory;
}
.product-scroll::-webkit-scrollbar { display: none; }
.product-scroll .product-card {
  min-width: 220px;
  max-width: 280px;
  flex-shrink: 0;
  scroll-snap-align: start;
}

/* ─── Feature Chips / Trending Tags ─────────────────────────── */
.feature-chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-sm);
}
.feature-chip {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
  padding: var(--sp-sm) var(--sp-md);
  background: white;
  border: 1px solid var(--outline-variant);
  font-family: var(--ff-display);
  font-size: 14px;
  font-weight: 600;
  transition: background .2s;
  border-radius: var(--r-sm);
  cursor: pointer;
}
.feature-chip:hover { background: var(--surface-container-low); }
.feature-chip .material-symbols-outlined { color: var(--primary); }

/* ─── Promo Banners (dual grid) ─────────────────────────────── */
.promo-grid {
  display: grid;
  gap: var(--sp-md);
}
@media (min-width: 768px) { .promo-grid { grid-template-columns: repeat(2, 1fr); } }

.promo-card {
  position: relative;
  aspect-ratio: 16/7;
  border-radius: var(--r-lg);
  overflow: hidden;
  display: flex;
  align-items: center;
  padding: var(--sp-lg);
  cursor: pointer;
}
.promo-card-light { background: var(--surface-container-high); border: 1px solid var(--outline-variant); }
.promo-card-dark { background: var(--primary-container); }

.promo-card-content { position: relative; z-index: 1; display: flex; flex-direction: column; gap: var(--sp-xs); }

.promo-label {
  font-family: var(--ff-label);
  font-size: 12px;
  letter-spacing: 0.05em;
  font-weight: 500;
  text-transform: uppercase;
  color: var(--primary);
}
.promo-card-dark .promo-label { color: var(--primary-fixed); }

.promo-card h3 {
  font-size: 24px;
  font-weight: 600;
}
.promo-card-dark h3 { color: white; }

.promo-card p {
  font-size: 14px;
  color: var(--on-surface-variant);
}
.promo-card-dark p { color: var(--on-primary-container); }

.promo-card-link {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-xs);
  font-weight: 700;
  margin-top: var(--sp-sm);
}
.promo-card-dark .promo-card-link { color: white; }

.promo-card-bg {
  position: absolute;
  right: 0;
  top: 0;
  height: 100%;
  width: 50%;
  object-fit: cover;
  opacity: .2;
  filter: grayscale(1);
  transition: all .5s;
}
.promo-card:hover .promo-card-bg { opacity: .4; filter: grayscale(0); }

/* ─── Features Section ──────────────────────────────────────── */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--sp-md);
}

.feature-card {
  padding: var(--sp-md);
  background: var(--surface-container-lowest);
  border: 1px solid var(--outline-variant);
  border-radius: var(--r-lg);
  text-align: center;
}
.feature-card .material-symbols-outlined {
  font-size: 32px;
  color: var(--primary);
  margin-bottom: var(--sp-sm);
}
.feature-card h3 {
  font-size: 16px;
  margin-bottom: 8px;
}
.feature-card p {
  font-size: 14px;
  color: var(--on-surface-variant);
}

/* ─── Product Detail ────────────────────────────────────────── */
.product-detail {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--sp-md) var(--gutter);
}

.product-detail-grid {
  display: grid;
  gap: var(--sp-lg);
}
@media (min-width: 768px) {
  .product-detail-grid { grid-template-columns: 1fr 1fr; }
}

.product-detail-image {
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--surface-container-low);
  aspect-ratio: 1;
}
.product-detail-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.product-detail-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  color: var(--on-surface-variant);
}

.product-detail-info { display: flex; flex-direction: column; gap: var(--sp-md); }

.product-category-badge {
  display: inline-block;
  width: fit-content;
  font-family: var(--ff-label);
  font-size: 12px;
  letter-spacing: 0.05em;
  font-weight: 500;
  text-transform: uppercase;
  color: var(--on-surface-variant);
  background: var(--surface-container);
  padding: 4px var(--sp-sm);
  border-radius: var(--r-sm);
}

.product-detail-info h1 {
  font-size: 32px;
  line-height: 1.2;
}

.product-detail-desc {
  font-size: 16px;
  line-height: 1.6;
  color: var(--on-surface-variant);
}

/* Detail chips */
.pdf-details {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-sm);
}
.detail-chip {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--on-surface-variant);
  background: var(--surface-container-low);
  padding: 6px 12px;
  border-radius: var(--r-sm);
}

/* Buy card */
.buy-card {
  background: var(--surface-container-lowest);
  border: 1px solid var(--outline-variant);
  border-radius: var(--r-lg);
  padding: var(--sp-md);
}
.price-row { margin-bottom: var(--sp-md); }
.main-price {
  font-family: var(--ff-display);
  font-size: 32px;
  font-weight: 700;
  color: var(--primary);
}
.buy-actions {
  display: flex;
  gap: var(--sp-sm);
}
.buy-actions .primary-btn { flex: 1; }

.primary-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-sm);
  padding: var(--sp-sm) var(--sp-md);
  background: var(--primary);
  color: var(--on-primary);
  font-family: var(--ff-display);
  font-size: 14px;
  font-weight: 600;
  border: none;
  border-radius: var(--r-sm);
  cursor: pointer;
  transition: background .2s;
}
.primary-btn:hover { background: var(--primary-container); }

.secondary-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--sp-sm) var(--sp-md);
  background: transparent;
  color: var(--primary);
  font-family: var(--ff-display);
  font-size: 14px;
  font-weight: 600;
  border: 1px solid var(--outline-variant);
  border-radius: var(--r-sm);
  cursor: pointer;
  transition: background .2s;
}
.secondary-btn:hover { background: var(--surface-container-low); }

/* ─── Icon Button ───────────────────────────────────────────── */
.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--outline-variant);
  border-radius: 50%;
  background: var(--surface-container-lowest);
  color: var(--on-surface);
  cursor: pointer;
  transition: background .2s;
}
.icon-btn:hover { background: var(--surface-container-low); }

/* ─── Reviews ───────────────────────────────────────────────── */
.reviews-section {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--sp-lg) var(--gutter);
}

.review-summary-badge {
  font-size: 14px;
  color: var(--on-surface-variant);
}

.star-filled { color: #eab308; }
.star-empty { color: var(--outline-variant); }

.star-rating-input {
  display: flex;
  flex-direction: row-reverse;
  justify-content: flex-end;
  gap: 4px;
}
.star-rating-input input { display: none; }
.star-rating-input label {
  font-size: 28px;
  color: var(--outline-variant);
  cursor: pointer;
  transition: color .1s;
}
.star-rating-input input:checked ~ label,
.star-rating-input label:hover,
.star-rating-input label:hover ~ label { color: #eab308; }

.review-card {
  padding: var(--sp-md);
  border-bottom: 1px solid var(--outline-variant);
}
.review-card:last-child { border-bottom: none; }

.review-header { display: flex; justify-content: space-between; align-items: start; margin-bottom: var(--sp-sm); }
.review-author { display: flex; align-items: center; gap: var(--sp-sm); }
.review-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--primary-container);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 14px;
}
.review-name { font-size: 14px; display: block; }
.review-date { font-size: 12px; color: var(--on-surface-variant); }
.review-comment { font-size: 14px; line-height: 1.5; color: var(--on-surface-variant); }
.reviews-empty { text-align: center; color: var(--on-surface-variant); padding: var(--sp-lg); }

/* ─── Cart Page ─────────────────────────────────────────────── */
.cart-container {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--sp-md) var(--gutter);
}
.cart-container h2 { margin-bottom: var(--sp-md); }

.cart-guest-banner {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
  padding: var(--sp-sm) var(--sp-md);
  background: var(--surface-container);
  border-radius: var(--r-lg);
  margin-bottom: var(--sp-md);
  font-size: 14px;
  color: var(--on-surface-variant);
}
.cart-guest-banner a { color: var(--primary); font-weight: 600; }

.cart-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--sp-md);
  border-bottom: 1px solid var(--outline-variant);
}
.cart-item:last-child { border-bottom: none; }

.cart-item-left { display: flex; align-items: center; gap: var(--sp-md); }

.cart-item-thumb {
  width: 64px;
  height: 64px;
  border-radius: var(--r-sm);
  object-fit: cover;
}
.cart-item-thumb-placeholder {
  width: 64px;
  height: 64px;
  border-radius: var(--r-sm);
  background: var(--surface-container-low);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--on-surface-variant);
}

.cart-item-title {
  font-family: var(--ff-display);
  font-size: 16px;
  font-weight: 600;
  color: var(--primary);
  display: block;
}
.cart-item-format {
  font-size: 12px;
  color: var(--on-surface-variant);
}

.cart-item-right { display: flex; align-items: center; gap: var(--sp-md); }
.cart-item-price { font-family: var(--ff-display); font-weight: 600; font-size: 16px; color: var(--primary); }

.cart-remove-btn {
  background: none;
  border: none;
  color: var(--on-surface-variant);
  cursor: pointer;
  padding: 4px;
  transition: color .2s;
}
.cart-remove-btn:hover { color: var(--error); }

.cart-summary {
  margin-top: var(--sp-md);
  padding: var(--sp-md);
  background: var(--surface-container-lowest);
  border: 1px solid var(--outline-variant);
  border-radius: var(--r-lg);
}
.cart-total { display: flex; justify-content: space-between; font-size: 18px; margin-bottom: var(--sp-md); }
.cart-total strong { font-family: var(--ff-display); font-size: 24px; color: var(--primary); }

.cart-actions {
  display: flex;
  gap: var(--sp-sm);
}
.cart-actions .btn-primary, .cart-actions .btn-secondary { flex: 1; text-align: center; }

.cart-clear-btn {
  display: block;
  margin-top: var(--sp-md);
  text-align: center;
  background: none;
  border: none;
  color: var(--error);
  font-size: 14px;
  cursor: pointer;
  width: 100%;
}

/* ─── Checkout ──────────────────────────────────────────────── */
.checkout-container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--sp-md) var(--gutter);
}

.checkout-steps {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  margin-bottom: var(--sp-lg);
}
.step {
  display: flex;
  align-items: center;
  gap: var(--sp-xs);
  color: var(--on-surface-variant);
  font-size: 14px;
}
.step.active { color: var(--primary); font-weight: 600; }
.step.completed { color: var(--success); }
.step-num {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  background: var(--surface-container);
  color: var(--on-surface-variant);
}
.step.active .step-num { background: var(--primary); color: white; }
.step.completed .step-num { background: var(--success); color: white; }
.step-label { display: none; }
@media (min-width: 640px) { .step-label { display: inline; } }
.step-line { width: 40px; height: 2px; background: var(--outline-variant); margin: 0 var(--sp-xs); }
.step-line.completed { background: var(--success); }

.checkout-grid {
  display: grid;
  gap: var(--sp-md);
}
@media (min-width: 768px) {
  .checkout-grid { grid-template-columns: 1fr 400px; }
}

/* ─── Forms ─────────────────────────────────────────────────── */
.form-group { margin-bottom: var(--sp-md); }
.form-group label {
  display: block;
  font-family: var(--ff-display);
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: var(--sp-sm);
  font-family: var(--ff-body);
  font-size: 16px;
  background: var(--surface-container-low);
  border: 1px solid var(--outline-variant);
  color: var(--on-surface);
  outline: none;
  border-radius: var(--r-sm);
  transition: border-color .2s;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus { border-color: var(--primary-container); }

.form-error { color: var(--error); font-size: 12px; margin-top: 4px; display: block; }

.payment-methods { display: flex; flex-direction: column; gap: var(--sp-sm); margin-bottom: var(--sp-md); }
.payment-method-option { cursor: pointer; }
.payment-method-option input { display: none; }
.payment-method-card {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
  padding: var(--sp-sm) var(--sp-md);
  border: 1px solid var(--outline-variant);
  border-radius: var(--r-sm);
  transition: border-color .2s, background .2s;
}
.payment-method-option input:checked + .payment-method-card {
  border-color: var(--primary);
  background: var(--surface-container-low);
}
.payment-method-icon { font-size: 24px; }
.payment-method-desc { font-size: 12px; color: var(--on-surface-variant); display: block; }
.payment-heading { margin: var(--sp-md) 0 var(--sp-sm); font-size: 18px; }

.bank-details-box {
  padding: var(--sp-md);
  background: var(--surface-container-low);
  border: 1px solid var(--outline-variant);
  border-radius: var(--r-lg);
  margin-bottom: var(--sp-md);
}
.bank-info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-sm);
}
.bank-info-grid span { font-size: 12px; color: var(--on-surface-variant); display: block; }
.bank-note { font-size: 12px; color: var(--on-surface-variant); margin-top: var(--sp-sm); }

.checkout-submit { width: 100%; margin-top: var(--sp-sm); }

/* Order summary sidebar */
.order-summary h3 { font-size: 18px; margin-bottom: var(--sp-md); }

.summary-items { list-style: none; }
.summary-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--sp-sm) 0;
  border-bottom: 1px solid var(--outline-variant);
  font-size: 14px;
}
.summary-item-left { display: flex; align-items: center; gap: var(--sp-sm); }
.summary-thumb { width: 40px; height: 40px; border-radius: var(--r-sm); object-fit: cover; }
.summary-thumb-placeholder {
  width: 40px;
  height: 40px;
  border-radius: var(--r-sm);
  background: var(--surface-container);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--on-surface-variant);
}
.summary-item-price { font-weight: 600; white-space: nowrap; }
.summary-divider { height: 1px; background: var(--outline-variant); margin: var(--sp-sm) 0; }
.summary-subtotal, .summary-discount, .summary-total { display: flex; justify-content: space-between; font-size: 14px; padding: 4px 0; }
.summary-total { font-size: 18px; font-weight: 700; padding-top: var(--sp-sm); border-top: 1px solid var(--outline-variant); margin-top: var(--sp-sm); }
.discount-amount { color: var(--success); font-weight: 600; }
.summary-secure { text-align: center; font-size: 12px; color: var(--on-surface-variant); margin-top: var(--sp-sm); }

/* Coupon */
.coupon-form { display: flex; gap: 0; }
.coupon-input { flex: 1; padding: var(--sp-xs) var(--sp-sm); border: 1px solid var(--outline-variant); outline: none; font-size: 14px; background: var(--surface-container-low); border-radius: var(--r-sm) 0 0 var(--r-sm); }
.coupon-input:focus { border-color: var(--primary-container); }
.coupon-apply-btn { padding: var(--sp-xs) var(--sp-md); background: var(--primary); color: white; font-size: 14px; font-weight: 600; border: none; cursor: pointer; border-radius: 0 var(--r-sm) var(--r-sm) 0; }
.coupon-applied { display: flex; align-items: center; justify-content: space-between; font-size: 14px; }
.coupon-remove { background: none; border: none; font-size: 18px; color: var(--error); cursor: pointer; }

/* ─── Order Confirmation ────────────────────────────────────── */
.confirmation-container {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--sp-md) var(--gutter);
}

.confirmation-hero {
  text-align: center;
  padding: var(--sp-lg);
  margin-bottom: var(--sp-md);
}
.confirmation-icon { font-size: 48px; margin-bottom: var(--sp-sm); }
.success-confirmation .confirmation-icon { color: var(--success); }
.pending-confirmation .confirmation-icon { color: var(--primary); }
.confirmation-hero h1 { font-size: 28px; margin-bottom: var(--sp-sm); }
.confirmation-subtitle { color: var(--on-surface-variant); font-size: 16px; }

.confirmation-header { display: flex; justify-content: space-between; align-items: start; margin-bottom: var(--sp-md); flex-wrap: wrap; gap: var(--sp-sm); }
.confirmation-date { font-size: 14px; color: var(--on-surface-variant); display: block; }

.order-status-badge {
  display: inline-block;
  padding: 4px var(--sp-sm);
  border-radius: var(--r-sm);
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.status-completed { background: var(--success-container); color: #166534; }
.status-pending { background: #fef3c7; color: #92400e; }
.status-cancelled { background: var(--error-container); color: var(--on-error-container); }

.confirmation-items { list-style: none; }
.confirmation-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--sp-sm) 0;
  border-bottom: 1px solid var(--outline-variant);
}
.confirmation-item-left { display: flex; align-items: center; gap: var(--sp-sm); }

.confirmation-total {
  display: flex;
  justify-content: space-between;
  padding-top: var(--sp-sm);
  font-size: 18px;
  font-weight: 700;
}

.confirmation-actions {
  display: flex;
  gap: var(--sp-sm);
  margin-top: var(--sp-md);
}
.confirmation-actions .btn-primary,
.confirmation-actions .btn-secondary { flex: 1; text-align: center; }

.highlight-amount { color: var(--primary); font-size: 18px; }
.highlight-ref { font-family: var(--ff-label); letter-spacing: 0.05em; }
.bank-transfer-card { margin-bottom: var(--sp-md); }

.download-link {
  display: block;
  font-size: 12px;
  color: var(--primary);
  font-weight: 600;
  margin-top: 4px;
}

/* ─── Auth Pages ────────────────────────────────────────────── */
.auth-container {
  max-width: 440px;
  margin: var(--sp-lg) auto;
  padding: var(--sp-lg) var(--sp-md);
  background: var(--surface-container-lowest);
  border: 1px solid var(--outline-variant);
  border-radius: var(--r-lg);
}
.auth-container h2 { font-size: 24px; margin-bottom: var(--sp-xs); }
.auth-subtitle { color: var(--on-surface-variant); font-size: 14px; margin-bottom: var(--sp-md); }
.auth-switch { text-align: center; font-size: 14px; color: var(--on-surface-variant); margin-top: var(--sp-md); }
.auth-switch a { color: var(--primary); font-weight: 600; }

/* ─── Orders Page ───────────────────────────────────────────── */
.orders-container {
  max-width: 900px;
  margin: 0 auto;
  padding: var(--sp-md) var(--gutter);
}
.orders-header { margin-bottom: var(--sp-md); }
.orders-header h1 { font-size: 28px; }
.orders-subtitle { color: var(--on-surface-variant); font-size: 14px; }

.order-card {
  border: 1px solid var(--outline-variant);
  border-radius: var(--r-lg);
  margin-bottom: var(--sp-sm);
  overflow: hidden;
}
.order-card summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--sp-md);
  cursor: pointer;
  list-style: none;
  background: var(--surface-container-lowest);
  transition: background .2s;
}
.order-card summary:hover { background: var(--surface-container-low); }
.order-card summary::-webkit-details-marker { display: none; }

.order-card-left { display: flex; flex-direction: column; gap: 2px; }
.order-ref { font-family: var(--ff-label); font-size: 14px; letter-spacing: 0.03em; }
.order-date { font-size: 12px; color: var(--on-surface-variant); }

.order-card-right { display: flex; align-items: center; gap: var(--sp-md); }
.order-amount { font-family: var(--ff-display); font-weight: 700; font-size: 16px; color: var(--primary); }
.order-chevron { transition: transform .2s; color: var(--on-surface-variant); }
.order-card[open] .order-chevron { transform: rotate(180deg); }

.order-card-body { padding: var(--sp-md); border-top: 1px solid var(--outline-variant); }
.order-meta-row { display: flex; gap: var(--sp-md); font-size: 14px; color: var(--on-surface-variant); margin-bottom: var(--sp-md); flex-wrap: wrap; }
.order-meta-row code { font-family: var(--ff-label); font-size: 12px; }

.order-items-list { list-style: none; }
.order-item-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--sp-sm) 0;
  border-bottom: 1px solid var(--outline-variant);
}
.order-item-row:last-child { border-bottom: none; }
.order-item-left { display: flex; align-items: center; gap: var(--sp-sm); }
.order-item-thumb { width: 40px; height: 40px; border-radius: var(--r-sm); object-fit: cover; }
.order-item-thumb-placeholder {
  width: 40px;
  height: 40px;
  border-radius: var(--r-sm);
  background: var(--surface-container);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--on-surface-variant);
}
.order-item-title { font-size: 14px; font-weight: 600; color: var(--primary); display: block; }
.order-download-link { font-size: 12px; color: var(--primary); display: block; margin-top: 2px; }
.order-item-price { font-weight: 600; font-size: 14px; white-space: nowrap; }

.order-pending-note {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
  margin-top: var(--sp-md);
  padding: var(--sp-sm) var(--sp-md);
  background: #fef3c7;
  border-radius: var(--r-sm);
  font-size: 14px;
  color: #92400e;
}

/* ─── Library Page ──────────────────────────────────────────── */
.library-container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--sp-md) var(--gutter);
}
.library-header { margin-bottom: var(--sp-md); }
.library-header h1 { font-size: 28px; }
.library-subtitle { color: var(--on-surface-variant); font-size: 14px; }

.library-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--sp-md);
}

.library-card {
  background: var(--surface-container-lowest);
  border: 1px solid var(--outline-variant);
  border-radius: var(--r-lg);
  overflow: hidden;
}

.library-card-image {
  position: relative;
  aspect-ratio: 4/3;
  background: var(--surface-container-low);
}
.library-card-image img { width: 100%; height: 100%; object-fit: cover; }
.library-card-placeholder { display: flex; align-items: center; justify-content: center; width: 100%; height: 100%; color: var(--on-surface-variant); }
.library-owned-badge {
  position: absolute;
  top: var(--sp-sm);
  right: var(--sp-sm);
  background: var(--success);
  color: white;
  font-size: 12px;
  font-weight: 600;
  padding: 2px var(--sp-sm);
  border-radius: var(--r-sm);
}

.library-card-body { padding: var(--sp-md); }
.library-card-title {
  font-family: var(--ff-display);
  font-size: 16px;
  font-weight: 600;
  color: var(--primary);
  display: block;
  margin-bottom: var(--sp-sm);
}
.library-card-meta { display: flex; justify-content: space-between; font-size: 12px; color: var(--on-surface-variant); margin-bottom: var(--sp-md); }
.library-card-actions { margin-bottom: var(--sp-sm); }
.library-download-btn { width: 100%; }
.library-download-count { font-size: 12px; color: var(--on-surface-variant); }

/* ─── Wishlist ──────────────────────────────────────────────── */
.wishlist-container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--sp-md) var(--gutter);
}
.wishlist-container h2 { margin-bottom: var(--sp-md); }

.wishlist-actions {
  display: flex;
  gap: var(--sp-sm);
  align-items: center;
}

/* ─── Empty States ──────────────────────────────────────────── */
.empty-state {
  text-align: center;
  padding: var(--sp-xl) var(--sp-md);
  color: var(--on-surface-variant);
}
.empty-state-icon {
  margin-bottom: var(--sp-md);
  color: var(--outline);
}
.empty-state p { margin-bottom: var(--sp-md); font-size: 16px; }

/* ─── Alerts ────────────────────────────────────────────────── */
.alert {
  padding: var(--sp-sm) var(--sp-md);
  border-radius: var(--r-sm);
  font-size: 14px;
  margin-bottom: var(--sp-md);
}
.alert-error { background: var(--error-container); color: var(--on-error-container); }
.alert-success { background: var(--success-container); color: #166534; }

/* ─── Footer ────────────────────────────────────────────────── */
.site-footer {
  background: var(--surface-container-high);
  border-top: 1px solid var(--outline-variant);
  margin-top: var(--sp-xl);
}

.footer-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--sp-xl) var(--gutter);
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--sp-md);
}
@media (min-width: 768px) { .footer-inner { grid-template-columns: 2fr 1fr 1fr 2fr; } }

.footer-brand {
  grid-column: span 2;
}
@media (min-width: 768px) { .footer-brand { grid-column: span 1; } }

.footer-brand .brand-name {
  font-family: var(--ff-display);
  font-size: 20px;
  font-weight: 700;
  color: var(--primary);
  display: block;
  margin-bottom: var(--sp-md);
}
.footer-brand p {
  font-size: 14px;
  color: var(--on-surface-variant);
  max-width: 320px;
  margin-bottom: var(--sp-md);
}
.footer-social {
  display: flex;
  gap: var(--sp-md);
}
.footer-social .material-symbols-outlined { color: var(--primary); cursor: pointer; }

.footer-col h4 {
  font-family: var(--ff-display);
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: var(--sp-sm);
}
.footer-col nav {
  display: flex;
  flex-direction: column;
  gap: var(--sp-xs);
}
.footer-col a {
  font-size: 14px;
  color: var(--on-surface-variant);
  text-decoration: underline;
  transition: color .2s;
}
.footer-col a:hover { color: var(--primary); }

.footer-newsletter { grid-column: span 2; }
@media (min-width: 768px) { .footer-newsletter { grid-column: span 1; } }

.footer-newsletter h4 {
  font-family: var(--ff-display);
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: var(--sp-sm);
}
.footer-newsletter p {
  font-size: 14px;
  color: var(--on-surface-variant);
  margin-bottom: var(--sp-sm);
}
.footer-newsletter-form { display: flex; }
.footer-newsletter-form input {
  flex: 1;
  background: white;
  border: 1px solid var(--outline-variant);
  padding: var(--sp-xs) var(--sp-sm);
  outline: none;
  font-size: 14px;
  border-radius: var(--r-sm) 0 0 var(--r-sm);
}
.footer-newsletter-form button {
  background: var(--primary);
  color: white;
  padding: var(--sp-xs) var(--sp-md);
  font-family: var(--ff-display);
  font-size: 14px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
}

.footer-bottom {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--sp-md) var(--gutter);
  border-top: 1px solid rgba(197,198,205,.3);
  text-align: center;
  font-size: 14px;
  color: var(--on-surface-variant);
}

/* ─── Mobile Bottom Nav ─────────────────────────────────────── */
.mobile-bottom-nav {
  display: flex;
  justify-content: space-around;
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background: white;
  border-top: 1px solid var(--outline-variant);
  padding: var(--sp-sm) 0;
  z-index: 50;
}
@media (min-width: 768px) { .mobile-bottom-nav { display: none; } }

.mobile-nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  background: none;
  border: none;
  color: var(--on-surface-variant);
  cursor: pointer;
  font-size: 10px;
  gap: 2px;
}
.mobile-nav-item.active { color: var(--primary); font-weight: 700; }
.mobile-nav-item .material-symbols-outlined { font-size: 24px; }

/* ─── Responsive Adjustments ────────────────────────────────── */
@media (max-width: 767px) {
  body { padding-bottom: 72px; }

  .app-layout {
    padding: var(--margin-mobile);
    gap: var(--margin-mobile);
  }

  .header-inner { padding: 0 var(--margin-mobile); }

  .header-menu-btn {
    display: flex;
  }

  .mobile-search-btn {
    display: flex;
  }

  .mobile-search-container.open {
    display: block;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: var(--surface-container-lowest);
    padding: var(--sp-sm) var(--margin-mobile);
    border-bottom: 1px solid var(--outline-variant);
    z-index: 100;
    box-shadow: var(--shadow-md);
  }

  .header-nav.open {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: var(--sp-xs);
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: var(--surface-container-lowest);
    padding: var(--sp-sm) var(--margin-mobile);
    border-bottom: 1px solid var(--outline-variant);
    z-index: 100;
    box-shadow: var(--shadow-md);
  }

  .header-nav.open a {
    width: 100%;
    padding: var(--sp-xs) 0;
    border-bottom: none;
  }

  .hero-banner {
    aspect-ratio: auto;
  }
  .hero-overlay {
    position: relative;
    z-index: 1;
    min-height: 320px;
    padding: var(--sp-md);
    background: linear-gradient(135deg, rgba(9, 20, 38, 0.95) 0%, rgba(30, 41, 59, 0.85) 100%);
  }
  .hero-banner h1 { font-size: 24px; line-height: 32px; margin-bottom: var(--sp-sm); }
  .hero-desc { font-size: 14px; margin-bottom: var(--sp-sm); }

  .product-detail-grid { grid-template-columns: 1fr; }

  .cart-item { flex-direction: column; align-items: flex-start; gap: var(--sp-sm); }
  .cart-item-right { align-self: flex-end; }

  .checkout-grid { grid-template-columns: 1fr; }

  .auth-container { margin: var(--sp-md) var(--margin-mobile); }
}

/* ─── Catalog Filters ───────────────────────────────────────── */
.catalog-header { margin-bottom: var(--sp-md); }
.catalog-header h1 { font-size: 28px; }

.catalog-filters {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
  flex-wrap: wrap;
  margin-bottom: var(--sp-md);
}

.filter-tab {
  padding: 6px var(--sp-md);
  background: white;
  border: 1px solid var(--outline-variant);
  font-family: var(--ff-display);
  font-size: 14px;
  font-weight: 600;
  color: var(--on-surface-variant);
  cursor: pointer;
  border-radius: var(--r-sm);
  transition: all .2s;
}
.filter-tab:hover,
.filter-tab.active {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

.catalog-sort select {
  padding: 6px var(--sp-sm);
  background: white;
  border: 1px solid var(--outline-variant);
  font-size: 14px;
  outline: none;
  border-radius: var(--r-sm);
}

/* ─── Product Info within Cards (Wishlist/Related) ──────────── */
.product-info { padding: var(--sp-sm); }
.product-info h3 { font-size: 14px; font-weight: 600; margin-bottom: 4px; }
.product-info h3 a { color: var(--primary); }
.product-price { font-family: var(--ff-display); font-weight: 600; font-size: 16px; color: var(--primary); margin-bottom: var(--sp-sm); }
.product-actions { display: flex; gap: var(--sp-sm); }

/* ─── Review Form ───────────────────────────────────────────── */
.review-form-container { margin-bottom: var(--sp-md); }
.review-form-container h3 { font-size: 18px; margin-bottom: var(--sp-md); }

/* ─── Image Placeholders ────────────────────────────────────── */
.product-image-placeholder {
  width: 100%;
  aspect-ratio: 1;
  background: var(--surface-container-low);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--outline);
}

/* ─── Cart.js add-to-cart class ──────────────────────────────── */
.add-to-cart { cursor: pointer; }

/* ─── Wishlist inline form ──────────────────────────────────── */
.wishlist-form-inline { display: inline; }
.wishlisted { color: #ef4444 !important; }

/* ─── Home section with title bar ───────────────────────────── */
.home-section { padding-bottom: var(--sp-md); }
.section-title {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--sp-md);
}
.section-title h3 { font-size: 24px; }
.section-title a {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
}

/* ─── Meta row (rating in product detail) ───────────────────── */
.meta { font-size: 14px; color: var(--on-surface-variant); }