@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Space+Grotesk:wght@500;600;700&display=swap');

:root {
  --bg-deep: #f2f2f7;
  --bg-body: #ffffff;
  --bg-card: #ffffff;
  --bg-elevated: #f5f5f7;
  --bg-hover: #e8e8ed;
  --accent-purple: #6c5ce7;
  --accent-teal: #00cec9;
  --accent-pink: #fd79a8;
  --accent-gradient: linear-gradient(135deg, #6c5ce7, #00cec9);
  --accent-gradient-reverse: linear-gradient(135deg, #00cec9, #6c5ce7);
  --text-primary: #1d1d1f;
  --text-secondary: #515154;
  --text-muted: #a1a1a6;
  --border-light: rgba(0,0,0,0.06);
  --border-med: rgba(0,0,0,0.1);
  --shadow-card: 0 8px 32px rgba(0,0,0,0.08);
  --hero-overlay: rgba(255,255,255,0.7),rgba(255,255,255,0.1),rgba(255,255,255,0.4),rgba(255,255,255,0.85);
  --hero-bg: #f7f7fa, #ffffff, #f5f0ff, #f0faff;
  --font-body: 'Inter', system-ui, sans-serif;
  --font-display: 'Space Grotesk', 'Inter', sans-serif;
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --nav-height: 60px;
}

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

body {
  font-family: var(--font-body);
  color: var(--text-secondary);
  background: var(--bg-body);
  padding-top: var(--nav-height);
  -webkit-font-smoothing: antialiased;
  scroll-behavior: smooth;
}

::selection { background: var(--accent-purple); color: #fff; }

img { max-width: 100%; height: auto; }
a { text-decoration: none; color: inherit; }
h1, h2, h3, h4, h5, h6 { font-family: var(--font-display); color: var(--text-primary); }

/* ===== NAVBAR ===== */
#mainNav {
  background: rgba(255,255,255,0.9);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  height: var(--nav-height);
  border-bottom: 1px solid var(--border-med);
  transition: background 0.3s;
}
#mainNav .navbar-brand {
  font-size: 1.25rem;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 700;
  letter-spacing: -0.02em;
}
#mainNav .nav-link {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 0.35rem 1rem;
  border-radius: 8px;
  transition: all 0.25s;
}
#mainNav .nav-link:hover {
  color: var(--text-primary);
  background: rgba(0,0,0,0.04);
}
#mainNav .nav-link.active {
  color: #fff;
  background: var(--accent-purple);
}
#mainNav .form-control {
  font-size: 0.8rem;
  height: 36px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-med);
  color: var(--text-primary);
  border-radius: 10px;
  padding-left: 1rem;
}
#mainNav .form-control:focus {
  background: #fff;
  border-color: var(--accent-purple);
  box-shadow: 0 0 0 3px rgba(108,92,231,0.15);
}
#mainNav .btn-outline-light {
  border: 1px solid var(--border-med);
  border-radius: 10px;
  padding: 0.35rem 0.9rem;
  font-size: 1rem;
  transition: all 0.25s;
  color: var(--text-secondary);
}
#mainNav .btn-outline-light:hover {
  background: rgba(108,92,231,0.1);
  border-color: var(--accent-purple);
  color: var(--accent-purple);
}
#mainNav .navbar-toggler { border-color: var(--border-med); color: var(--text-secondary); }
#mainNav .navbar-toggler-icon { filter: none; }

@media (max-width: 991px) {
  #mainNav .navbar-collapse {
    background: rgba(255,255,255,0.98);
    padding: 1rem;
    border-radius: 0 0 var(--radius-md) var(--radius-md);
    margin-top: 0.5rem;
    border: 1px solid var(--border-med);
  }
}

/* ===== HERO ===== */
.hero {
  min-height: 75vh;
  background: linear-gradient(160deg, var(--hero-bg));
  color: var(--text-primary);
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 20% 80%, rgba(108,92,231,0.08) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 80% 20%, rgba(0,206,201,0.06) 0%, transparent 50%),
    url('../assets/hero_college_students.jpg') center 30% / cover no-repeat;
  opacity: 0.15;
  pointer-events: none;
}
.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, var(--hero-overlay));
  pointer-events: none;
}
.hero .container { position: relative; z-index: 1; }
.hero-subtitle {
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 600;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}
.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 9vw, 5.5rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.05;
  margin-bottom: 1rem;
  color: var(--text-primary);
}
.hero-text {
  font-size: clamp(1rem, 2vw, 1.3rem);
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto 2rem;
  font-weight: 400;
  line-height: 1.6;
}
.btn-add-hero {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.9rem 2.2rem;
  background: var(--accent-gradient);
  color: #fff;
  border: none;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s;
  box-shadow: 0 4px 20px rgba(108,92,231,0.25);
}
.btn-add-hero:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(108,92,231,0.35);
  color: #fff;
}
.btn-checkout-sm {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.7rem 1.8rem;
  border-radius: 50px;
  background: var(--accent-gradient);
  color: #fff; border: none;
  font-weight: 700; font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.3s;
  box-shadow: 0 4px 20px rgba(108,92,231,0.2);
}
.btn-checkout-sm:hover {
  transform: scale(1.02);
  box-shadow: 0 8px 30px rgba(108,92,231,0.3);
  color: #fff;
}

/* ===== CATEGORY BUTTONS ===== */
.py-4.bg-light { background: var(--bg-elevated) !important; border-bottom: 1px solid var(--border-med); }
.category-btn {
  border-radius: 12px;
  padding: 0.75rem 0.5rem;
  border: 1px solid var(--border-med);
  background: var(--bg-card);
  transition: all 0.25s;
  color: var(--text-secondary);
}
.category-btn:hover {
  background: var(--bg-hover);
  border-color: rgba(108,92,231,0.3);
  transform: translateY(-2px);
}
.category-btn.active {
  background: var(--accent-gradient);
  color: #fff;
  border-color: var(--accent-purple);
  box-shadow: 0 0 20px rgba(108,92,231,0.15);
}
.category-btn i { opacity: 0.6; font-size: 1.3rem; }
.category-btn.active i { opacity: 1; }
.category-btn small { font-weight: 600; }

/* ===== SECTION TITLES ===== */
#sectionTitle, h3.fw-semibold {
  color: var(--text-primary);
  font-weight: 700;
  letter-spacing: -0.02em;
}

/* ===== PRODUCT CARD ===== */
.product-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  text-align: center;
  transition: all 0.4s cubic-bezier(0.25,0.1,0.25,1);
  border: 1px solid var(--border-light);
  position: relative;
  overflow: hidden;
  height: 100%;
  display: flex;
  flex-direction: column;
}
.product-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--accent-gradient);
  opacity: 0;
  transition: opacity 0.4s;
}
.product-card:hover::before { opacity: 1; }
.product-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-card);
  border-color: rgba(108,92,231,0.2);
  background: var(--bg-elevated);
}
.product-card .badge-new {
  position: absolute;
  top: 12px; left: 12px;
  background: var(--accent-gradient);
  color: #fff;
  font-size: 0.6rem;
  font-weight: 700;
  padding: 0.25rem 0.7rem;
  border-radius: 20px;
  letter-spacing: 0.04em;
  z-index: 2;
}
.product-card .img-wrapper {
  height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem;
  margin-bottom: 0.75rem;
  overflow: hidden;
}
.product-card .img-wrapper i {
  font-size: 4.5rem;
  color: var(--text-muted);
  opacity: 0.3;
}
.product-card .product-img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  transition: transform 0.5s ease;
  filter: drop-shadow(0 4px 12px rgba(0,0,0,0.08));
}
.product-card:hover .product-img { transform: scale(1.08); }
.product-card .category-label {
  font-size: 0.65rem;
  color: var(--accent-teal);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 700;
  margin-bottom: 0.25rem;
}
.product-card .product-name {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.3rem;
  line-height: 1.3;
  color: var(--text-primary);
}
.product-card .product-desc {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
  flex-grow: 1;
  line-height: 1.5;
}
.product-card .product-price {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.product-card .price-note {
  font-size: 0.65rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}
.product-card .btn-add {
  background: var(--accent-gradient);
  color: #fff;
  border: none;
  border-radius: 50px;
  padding: 0.55rem 1rem;
  font-size: 0.85rem;
  font-weight: 600;
  transition: all 0.3s;
  cursor: pointer;
  box-shadow: 0 4px 15px rgba(108,92,231,0.15);
}
.product-card .btn-add:hover {
  transform: translateY(-1px) scale(1.02);
  box-shadow: 0 6px 25px rgba(108,92,231,0.25);
}
.product-card .btn-outline-secondary {
  background: transparent;
  border: 1px solid var(--border-med);
  color: var(--text-secondary);
  transition: all 0.25s;
}
.product-card .btn-outline-secondary:hover {
  background: rgba(108,92,231,0.1);
  border-color: var(--accent-purple);
  color: var(--accent-purple);
}

/* ===== CART TABLE ===== */
.cart-table { width: 100%; border-collapse: separate; border-spacing: 0; }
.cart-table th {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  padding: 1rem 0.75rem;
  border-bottom: 1px solid var(--border-med);
}
.cart-table td {
  padding: 1rem 0.75rem;
  border-bottom: 1px solid var(--border-light);
  vertical-align: middle;
  color: var(--text-secondary);
}
.cart-table .product-info { display: flex; align-items: center; gap: 1rem; }
.cart-table .product-icon {
  width: 50px; height: 50px;
  background: var(--bg-elevated);
  border-radius: 12px;
  display: flex; align-items: center;
  justify-content: center; font-size: 1.5rem;
  flex-shrink: 0; color: var(--text-muted);
}
.cart-table .qty-control {
  display: inline-flex; align-items: center;
  border: 1px solid var(--border-med);
  border-radius: 10px; overflow: hidden;
  background: var(--bg-elevated);
}
.cart-table .qty-control button {
  width: 34px; height: 34px;
  border: none; background: transparent;
  cursor: pointer; font-size: 1rem;
  color: var(--text-secondary);
  transition: all 0.2s;
}
.cart-table .qty-control button:hover { background: var(--bg-hover); color: var(--text-primary); }
.cart-table .qty-control span {
  min-width: 2rem; text-align: center;
  font-weight: 700; font-size: 0.9rem;
  color: var(--text-primary);
}
.cart-table .btn-remove {
  color: var(--accent-pink);
  background: none; border: none;
  cursor: pointer; opacity: 0.5;
  transition: opacity 0.2s;
}
.cart-table .btn-remove:hover { opacity: 1; }

/* ===== ORDER SUMMARY CARD ===== */
.summary-card {
  background: var(--bg-card);
  border: 1px solid var(--border-med);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  position: sticky; top: 80px;
}
.summary-card .summary-row {
  display: flex; justify-content: space-between;
  padding: 0.6rem 0; font-size: 0.9rem;
}
.summary-card .summary-row.total {
  border-top: 1px solid var(--border-med);
  margin-top: 0.5rem;
  padding-top: 1rem;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
}
.summary-card .btn-checkout {
  width: 100%; padding: 0.85rem;
  border-radius: 50px;
  background: var(--accent-gradient);
  color: #fff; border: none;
  font-weight: 700; font-size: 1rem;
  transition: all 0.3s;
  box-shadow: 0 4px 20px rgba(108,92,231,0.2);
}
.summary-card .btn-checkout:hover {
  transform: scale(1.01);
  box-shadow: 0 8px 30px rgba(108,92,231,0.3);
}

/* ===== PRODUCT DETAIL ===== */
.product-detail-wrapper { padding: 3rem 0; }
.product-detail-wrapper .img-display {
  background: var(--bg-elevated);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  height: 420px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10rem;
  color: var(--text-primary);
  overflow: hidden;
}
.product-detail-wrapper .img-display i { opacity: 0.08; }
.product-detail-wrapper .detail-img {
  max-width: 85%;
  max-height: 85%;
  object-fit: contain;
  filter: drop-shadow(0 8px 30px rgba(0,0,0,0.1));
}
.product-detail-wrapper .detail-title {
  font-family: var(--font-display);
  font-size: 2.5rem; font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--text-primary);
}
.product-detail-wrapper .detail-price {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.product-detail-wrapper .detail-desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.7;
}
.product-detail-wrapper .breadcrumb {
  background: transparent;
}
.product-detail-wrapper .breadcrumb a { color: var(--accent-teal); }
.product-detail-wrapper .breadcrumb .active { color: var(--text-muted); }
.product-detail-wrapper .bg-light.rounded-3 {
  background: var(--bg-elevated) !important;
  border: 1px solid var(--border-light);
}
.product-detail-wrapper .bg-light.rounded-3 small { color: var(--text-secondary) !important; }

.cart-product-img {
  width: 60px; height: 60px;
  object-fit: contain; border-radius: 10px;
  background: var(--bg-elevated);
}

.qty-selector {
  display: inline-flex; align-items: center;
  border: 1px solid var(--border-med);
  border-radius: 12px; overflow: hidden;
  background: var(--bg-elevated);
}
.qty-selector button {
  width: 44px; height: 44px;
  border: none; background: transparent;
  cursor: pointer; font-size: 1.2rem;
  color: var(--text-secondary);
  transition: background 0.2s;
}
.qty-selector button:hover { background: var(--bg-hover); color: var(--text-primary); }
.qty-selector span {
  min-width: 3rem; text-align: center;
  font-weight: 700; font-size: 1.1rem;
  color: var(--text-primary);
}

/* ===== CHECKOUT ===== */
.checkout-wrapper { padding: 3rem 0; }
.form-section { margin-bottom: 2rem; }
.form-section h5 { font-weight: 600; margin-bottom: 1rem; color: var(--text-primary); }
.form-section .form-control, .form-section .form-select {
  border-radius: 12px; padding: 0.75rem 1rem;
  border: 1px solid var(--border-med);
  background: var(--bg-elevated);
  color: var(--text-primary);
}
.form-section .form-control:focus, .form-section .form-select:focus {
  border-color: var(--accent-purple);
  box-shadow: 0 0 0 3px rgba(108,92,231,0.15);
  background: #fff;
}
.form-section .form-control::placeholder { color: var(--text-muted); }
.form-section .form-select option { background: #fff; color: var(--text-primary); }
.form-section label { color: var(--text-secondary); }
.payment-option {
  display: flex; align-items: center; gap: 0.75rem;
  padding: 1rem;
  border: 1px solid var(--border-med);
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.2s;
  margin-bottom: 0.5rem;
  background: var(--bg-card);
  color: var(--text-secondary);
}
.payment-option:hover, .payment-option.selected {
  border-color: var(--accent-purple);
  background: rgba(108,92,231,0.06);
  color: var(--text-primary);
}
.payment-option input[type="radio"] { accent-color: var(--accent-purple); }
.payment-option strong { color: var(--text-primary); }

/* ===== CONFIRMATION ===== */
.confirmation-icon {
  width: 90px; height: 90px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(108,92,231,0.12), rgba(0,206,201,0.06));
  display: flex; align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
  font-size: 2.5rem;
  color: var(--accent-teal);
  border: 2px solid rgba(0,206,201,0.15);
}
.order-detail-card {
  background: var(--bg-card);
  border: 1px solid var(--border-med);
  border-radius: var(--radius-lg);
  padding: 2rem; max-width: 500px; margin: 0 auto;
}
.order-detail-card .row-line {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--border-light);
  color: var(--text-secondary);
}
.order-detail-card .row-line:last-child { border-bottom: none; }
.order-detail-card .row-line span:last-child {
  color: var(--text-primary);
  font-weight: 600;
}

/* ===== EMPTY STATE ===== */
.empty-state {
  text-align: center;
  padding: 4rem 1rem;
  color: var(--text-muted);
}
.empty-state i { font-size: 4rem; margin-bottom: 1rem; opacity: 0.15; }
.empty-state h5 { font-weight: 600; color: var(--text-primary); margin-bottom: 0.5rem; }

/* ===== SCROLL INDICATOR ===== */
.scroll-indicator {
  position: fixed; top: var(--nav-height);
  left: 0; height: 3px;
  background: var(--accent-gradient);
  width: 0%; z-index: 1030;
  transition: width 0.05s linear;
}

/* ===== TOAST ===== */
.toast-apple {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border-med);
  border-radius: 12px;
  padding: 0.85rem 1.25rem;
  font-size: 0.85rem;
  box-shadow: var(--shadow-card);
}
.toast-apple i.fa-check-circle { color: var(--accent-teal); }
.toast-apple i.fa-times-circle { color: var(--accent-pink); }
.toast-apple i.fa-info-circle { color: var(--accent-purple); }

/* ===== FOOTER ===== */
footer {
  background: var(--bg-elevated) !important;
  border-top: 1px solid var(--border-med);
}
footer h6 {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-primary) !important;
  margin-bottom: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
footer ul li {
  font-size: 0.8rem;
  color: var(--text-muted) !important;
  padding: 0.25rem 0;
  cursor: default;
  transition: color 0.2s;
}
footer ul li:hover { color: var(--text-secondary) !important; }
footer a { transition: color 0.2s; }
footer a:hover { color: var(--accent-purple) !important; }
footer .fab {
  font-size: 1.1rem;
  color: var(--text-muted);
  transition: all 0.3s;
  cursor: pointer;
}
footer .fab:hover {
  color: var(--accent-purple) !important;
  transform: translateY(-2px);
}
footer .newsletter-form .form-control {
  font-size: 0.8rem;
  padding: 0.65rem 1rem;
  background: var(--bg-body);
  border: 1px solid var(--border-med);
  color: var(--text-primary);
  border-radius: 10px 0 0 10px;
}
footer .newsletter-form .form-control::placeholder {
  color: var(--text-muted);
}
footer .newsletter-form .form-control:focus {
  border-color: var(--accent-purple);
  box-shadow: none;
  background: #fff;
}
footer .newsletter-form .btn-subscribe {
  background: var(--accent-gradient);
  color: #fff;
  border: none;
  padding: 0.65rem 1.25rem;
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: 0 10px 10px 0;
  cursor: pointer;
  transition: all 0.3s;
}
footer .newsletter-form .btn-subscribe:hover {
  box-shadow: 0 4px 15px rgba(108,92,231,0.3);
}
footer .footer-bottom {
  border-top: 1px solid var(--border-med);
  padding-top: 1.5rem;
  margin-top: 1.5rem;
}
footer .footer-logo {
  font-size: 1.5rem;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.75rem;
  display: inline-block;
}
footer .footer-desc {
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.6;
  max-width: 280px;
}
footer .border-secondary {
  border-color: var(--border-med) !important;
}
footer hr { opacity: 1; border-color: var(--border-med); }

/* ===== FEATURES SECTION ===== */
.py-5.bg-light {
  background: var(--bg-elevated) !important;
  border-top: 1px solid var(--border-med);
  border-bottom: 1px solid var(--border-med);
}
.py-5.bg-light h3 { color: var(--text-primary); }
.py-5.bg-light .text-muted,
.py-5.bg-light .text-muted.small { color: var(--text-muted) !important; }
.py-5.bg-light i.text-muted {
  color: var(--text-muted) !important;
  opacity: 0.5;
}
.py-5.bg-light h5 { color: var(--text-primary); }

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(15px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; } to { opacity: 1; }
}
.fade-in { animation: fadeIn 0.4s ease; }

/* ===== BOOTSTRAP OVERRIDES ===== */
.input-group-text { background: var(--bg-elevated); border: 1px solid var(--border-med); color: var(--text-secondary); border-radius: 10px; }
.form-select { background-color: var(--bg-elevated); border: 1px solid var(--border-med); color: var(--text-primary); border-radius: 10px; padding: 0.5rem 2.25rem 0.5rem 0.9rem; }
.form-select:focus { border-color: var(--accent-purple); box-shadow: 0 0 0 3px rgba(108,92,231,0.15); }
.form-select option { background: #fff; color: var(--text-primary); }
.btn-outline-light, .btn-outline-dark { border: 1px solid var(--border-med); color: var(--text-secondary); background: transparent; transition: all 0.25s; }
.btn-outline-light:hover, .btn-outline-dark:hover { background: rgba(108,92,231,0.1); border-color: var(--accent-purple); color: var(--accent-purple); }
.btn-outline-light:focus:not(:hover), .btn-outline-dark:focus:not(:hover) { box-shadow: 0 0 0 3px rgba(108,92,231,0.15); }
.btn-dark { background: var(--bg-elevated); border: 1px solid var(--border-med); color: var(--text-primary); transition: all 0.25s; }
.btn-dark:hover { background: var(--bg-hover); border-color: var(--accent-purple); color: var(--accent-purple); }
.page-link { background: var(--bg-card); border-color: var(--border-med); color: var(--text-secondary); }
.page-link:hover { background: var(--bg-hover); border-color: var(--accent-purple); color: var(--accent-purple); }
.btn-outline-danger { border-color: var(--accent-pink); color: var(--accent-pink); }
.btn-outline-danger:hover { background: rgba(253,121,168,0.1); border-color: var(--accent-pink); color: var(--accent-pink); }

/* ===== RESPONSIVE ===== */
@media (max-width: 992px) {
  .category-col { width: 33.33%; }
  .summary-card { position: static; }
  .checkout-wrapper .row.g-5 > .col-lg-7,
  .checkout-wrapper .row.g-5 > .col-lg-5 { width: 100%; }
}
@media (max-width: 768px) {
  .hero { min-height: 50vh; padding: 3rem 0; }
  .hero-title { font-size: clamp(2rem, 7vw, 2.8rem); }
  .hero-text { font-size: 1rem; }
  .product-detail-wrapper .img-display { height: 280px; font-size: 5rem; }
  .product-detail-wrapper .detail-title { font-size: 1.5rem; }
  .product-detail-wrapper .detail-price { font-size: 1.5rem; }
  .product-detail-wrapper #addToCartBtn,
  .product-detail-wrapper a[href="cart.html"].btn { width: 100%; }
  .product-detail-wrapper .row.g-5 > .col-md-6:last-child .d-flex.gap-3:last-child { flex-direction: column; }
  .cart-table thead { display: none; }
  .cart-table tr { display: block; padding: 1rem 0.5rem; border-bottom: 1px solid var(--border-light); }
  .cart-table td { display: block; padding: 0.25rem 0; border: none; }
  .cart-table .product-info { flex-direction: column; text-align: center; }
  .hero { min-height: 60vh; }
  .py-5 .d-flex.justify-content-between.align-items-center.flex-wrap { flex-direction: column; align-items: stretch !important; }
  .py-5 .d-flex.justify-content-between.align-items-center.flex-wrap .d-flex.gap-2 { flex-direction: column; }
  .py-5 .d-flex.justify-content-between.align-items-center.flex-wrap .input-group { max-width: 100% !important; }
  .py-5 .d-flex.justify-content-between.align-items-center.flex-wrap .form-select { width: 100% !important; }
  footer .col-md-4.mb-4, footer .col-md-2.mb-4 { text-align: center; }
  footer .footer-desc { max-width: 100%; }
  .payment-option { padding: 0.75rem; }
}
@media (max-width: 576px) {
  .category-col { width: 50%; }
  .product-card { padding: 1rem; }
  .product-card .img-wrapper { height: 140px; }
  .product-card .product-name { font-size: 0.85rem; }
  .product-card .product-price { font-size: 1.1rem; }
  .product-card .btn-add { font-size: 0.8rem; padding: 0.45rem 0.8rem; }
  .cart-product-img { width: 50px; height: 50px; }
}
@media (max-width: 400px) {
  #productGrid > .col-6 { width: 100%; }
  .category-col { width: 100%; }
  .category-btn { flex-direction: row; justify-content: start; gap: 0.75rem; padding: 0.6rem 1rem; }
  .category-btn i { font-size: 1rem; margin-bottom: 0; }
}