/* ==========================================================================
   Nexova Store — Shared Storefront Styles
   ========================================================================== */

:root {
  --primary: #4f46e5;
  --primary-dark: #4338ca;
  --primary-light: #eef2ff;
  --accent: #f59e0b;
  --accent-dark: #b45309;
  --success: #16a34a;
  --success-light: #dcfce7;
  --danger: #dc2626;
  --danger-light: #fee2e2;
  --dark: #111827;
  --gray-900: #111827;
  --gray-700: #374151;
  --gray-500: #6b7280;
  --gray-300: #d1d5db;
  --gray-200: #e5e7eb;
  --gray-100: #f3f4f6;
  --gray-50: #f9fafb;
  --white: #ffffff;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow-sm: 0 1px 3px rgba(17, 24, 39, 0.08);
  --shadow-md: 0 6px 20px rgba(17, 24, 39, 0.10);
  --shadow-lg: 0 20px 40px rgba(17, 24, 39, 0.16);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  color: var(--gray-900);
  background: var(--gray-50);
  line-height: 1.5;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; }
ul { list-style: none; margin: 0; padding: 0; }

.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: var(--radius-sm);
  border: none;
  font-weight: 600;
  font-size: 15px;
  transition: all 0.18s ease;
  white-space: nowrap;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-1px); }
.btn-accent { background: var(--accent); color: #fff; }
.btn-accent:hover { background: var(--accent-dark); }
.btn-outline { background: #fff; color: var(--primary); border: 1.5px solid var(--primary); }
.btn-outline:hover { background: var(--primary-light); }
.btn-dark { background: var(--gray-900); color: #fff; }
.btn-dark:hover { background: #000; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #b91c1c; }
.btn-sm { padding: 7px 14px; font-size: 13px; }
.btn-block { width: 100%; }
.btn:disabled { opacity: 0.55; cursor: not-allowed; transform: none; }

/* ---------- Top announcement bar ---------- */
.announce-bar {
  background: var(--gray-900);
  color: #fff;
  text-align: center;
  font-size: 13px;
  padding: 8px 16px;
  letter-spacing: 0.2px;
}

/* ---------- Header ---------- */
.site-header {
  background: #fff;
  border-bottom: 1px solid var(--gray-200);
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  gap: 20px;
}
.logo {
  font-size: 22px;
  font-weight: 800;
  color: var(--gray-900);
  display: flex;
  align-items: center;
  gap: 8px;
}
.logo span { color: var(--primary); }
.logo img { height: 44px; display: block; }
.main-nav { display: flex; gap: 28px; align-items: center; }
.main-nav a {
  font-weight: 500;
  font-size: 15px;
  color: var(--gray-700);
  position: relative;
}
.main-nav a:hover, .main-nav a.active { color: var(--primary); }
.header-actions { display: flex; align-items: center; gap: 14px; }
.icon-btn {
  position: relative;
  background: var(--gray-100);
  border: none;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 17px;
  color: var(--gray-700);
  transition: background 0.15s;
}
.icon-btn:hover { background: var(--gray-200); }
.cart-badge {
  position: absolute;
  top: -4px;
  right: -4px;
  background: var(--primary);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  min-width: 18px;
  height: 18px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 3px;
}
.search-box {
  display: flex;
  align-items: center;
  background: var(--gray-100);
  border-radius: 999px;
  padding: 8px 16px;
  gap: 8px;
  flex: 1;
  max-width: 380px;
}
.search-box input {
  border: none;
  background: transparent;
  outline: none;
  font-size: 14px;
  width: 100%;
}
.mobile-menu-btn { display: none; background: none; border: none; font-size: 22px; color: var(--gray-700); }

/* ---------- Hero ---------- */
.hero {
  background: linear-gradient(135deg, #eef2ff 0%, #fef3e2 100%);
  padding: 64px 24px;
  overflow: hidden;
}
.hero-inner {
  max-width: 1240px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 40px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: #fff;
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  box-shadow: var(--shadow-sm);
  margin-bottom: 16px;
}
.hero h1 {
  font-size: 44px;
  line-height: 1.15;
  margin: 0 0 16px;
  font-weight: 800;
  color: var(--gray-900);
}
.hero p { font-size: 17px; color: var(--gray-700); margin: 0 0 26px; max-width: 480px; }
.hero-actions { display: flex; gap: 14px; }
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}
.hero-visual img {
  border-radius: 20px;
  box-shadow: var(--shadow-lg);
  max-height: 380px;
  object-fit: cover;
}

/* ---------- Section headers ---------- */
.section { padding: 56px 24px; }
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 28px;
  flex-wrap: wrap;
  gap: 12px;
}
.section-head h2 { font-size: 28px; font-weight: 800; margin: 0; }
.section-head p { color: var(--gray-500); margin: 4px 0 0; font-size: 15px; }

/* ---------- Category chips ---------- */
.category-chips { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 28px; }
.chip {
  padding: 9px 18px;
  border-radius: 999px;
  border: 1.5px solid var(--gray-200);
  background: #fff;
  font-size: 14px;
  font-weight: 600;
  color: var(--gray-700);
  transition: all 0.15s;
}
.chip:hover { border-color: var(--primary); color: var(--primary); }
.chip.active { background: var(--primary); border-color: var(--primary); color: #fff; }

/* ---------- Product grid ---------- */
.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}
.product-card {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--gray-200);
  transition: all 0.2s ease;
  display: flex;
  flex-direction: column;
  position: relative;
}
.product-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); border-color: transparent; }
.product-thumb {
  position: relative;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  background: var(--gray-100);
}
.product-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.3s; }
.product-card:hover .product-thumb img { transform: scale(1.05); }
.badge {
  position: absolute;
  top: 12px;
  left: 12px;
  font-size: 11.5px;
  font-weight: 700;
  padding: 5px 10px;
  border-radius: 6px;
  letter-spacing: 0.3px;
  text-transform: uppercase;
}
.badge-preorder { background: var(--accent); color: #fff; }
.badge-instock { background: var(--success); color: #fff; }
.badge-sale { background: var(--danger); color: #fff; top: 12px; right: 12px; left: auto; }
.badge-low { background: var(--danger-light); color: var(--danger); }
.badge-out { background: var(--gray-200); color: var(--gray-700); }
.product-info { padding: 16px; display: flex; flex-direction: column; gap: 6px; flex: 1; }
.product-cat { font-size: 12px; color: var(--gray-500); font-weight: 600; text-transform: uppercase; letter-spacing: 0.3px; }
.product-name { font-size: 15.5px; font-weight: 700; color: var(--gray-900); margin: 0; }
.product-name a:hover { color: var(--primary); }
.product-price-row { display: flex; align-items: baseline; gap: 8px; margin-top: 4px; }
.price { font-size: 18px; font-weight: 800; color: var(--gray-900); }
.price-compare { font-size: 14px; color: var(--gray-500); text-decoration: line-through; }
.product-meta { font-size: 12.5px; color: var(--gray-500); margin-top: -2px; }
.product-actions { margin-top: auto; padding-top: 10px; }

/* ---------- Product Detail ---------- */
.breadcrumbs { font-size: 13px; color: var(--gray-500); padding: 18px 0; }
.breadcrumbs a:hover { color: var(--primary); }
.pdp-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  padding: 10px 0 56px;
}
.pdp-gallery { position: sticky; top: 100px; align-self: start; }
.pdp-main-img {
  width: 100%;
  aspect-ratio: 1/1;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--gray-100);
  border: 1px solid var(--gray-200);
}
.pdp-main-img img { width: 100%; height: 100%; object-fit: cover; }
.pdp-title { font-size: 30px; font-weight: 800; margin: 0 0 10px; }
.pdp-sku { color: var(--gray-500); font-size: 13px; margin-bottom: 16px; }
.pdp-price-row { display: flex; align-items: baseline; gap: 12px; margin-bottom: 18px; }
.pdp-price { font-size: 32px; font-weight: 800; }
.pdp-panel {
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin: 18px 0;
}
.pdp-panel.preorder { background: #fffbeb; border-color: #fde68a; }
.pdp-panel h4 { margin: 0 0 8px; font-size: 14px; font-weight: 700; }
.pdp-panel p { margin: 0; font-size: 13.5px; color: var(--gray-700); }
.qty-selector {
  display: flex;
  align-items: center;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-sm);
  width: fit-content;
}
.qty-selector button {
  width: 40px; height: 42px;
  border: none; background: none; font-size: 18px; font-weight: 600; color: var(--gray-700);
}
.qty-selector input {
  width: 46px; text-align: center; border: none; font-size: 15px; font-weight: 600;
  border-left: 1.5px solid var(--gray-200); border-right: 1.5px solid var(--gray-200);
  height: 42px;
}
.pdp-buy-row { display: flex; gap: 14px; margin: 22px 0; align-items: center; }
.pdp-desc { margin-top: 30px; border-top: 1px solid var(--gray-200); padding-top: 24px; }
.pdp-desc h3 { font-size: 18px; margin-bottom: 10px; }
.pdp-desc p { color: var(--gray-700); font-size: 15px; line-height: 1.7; }
.stock-line { display: flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 600; margin-bottom: 4px; }
.stock-dot { width: 8px; height: 8px; border-radius: 50%; }

/* ---------- Cart page ---------- */
.cart-layout { display: grid; grid-template-columns: 1fr 360px; gap: 32px; padding: 30px 0 70px; align-items: start; }
.cart-item {
  display: grid;
  grid-template-columns: 90px 1fr auto auto;
  gap: 16px;
  align-items: center;
  padding: 18px 0;
  border-bottom: 1px solid var(--gray-200);
}
.cart-item img { width: 90px; height: 90px; object-fit: cover; border-radius: var(--radius-sm); background: var(--gray-100); }
.cart-item-name { font-weight: 700; font-size: 15px; margin-bottom: 4px; }
.cart-item-type { font-size: 12px; font-weight: 600; }
.cart-item-remove { color: var(--danger); font-size: 13px; font-weight: 600; margin-top: 6px; display: inline-block; }
.cart-summary {
  background: #fff;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 24px;
  position: sticky;
  top: 100px;
}
.summary-row { display: flex; justify-content: space-between; margin-bottom: 12px; font-size: 14.5px; color: var(--gray-700); }
.summary-row.total { font-size: 18px; font-weight: 800; color: var(--gray-900); border-top: 1px solid var(--gray-200); padding-top: 14px; margin-top: 6px; }
.empty-state { text-align: center; padding: 80px 20px; color: var(--gray-500); }
.empty-state i { font-size: 56px; color: var(--gray-300); margin-bottom: 18px; }
.empty-state h3 { color: var(--gray-900); margin-bottom: 8px; }

/* ---------- Checkout ---------- */
.checkout-layout { display: grid; grid-template-columns: 1fr 380px; gap: 40px; padding: 30px 0 70px; }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 13.5px; font-weight: 600; margin-bottom: 6px; color: var(--gray-700); }
.form-group input, .form-group textarea, .form-group select {
  width: 100%; padding: 12px 14px; border: 1.5px solid var(--gray-200); border-radius: var(--radius-sm);
  font-size: 14.5px; font-family: inherit; outline: none; transition: border 0.15s;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus { border-color: var(--primary); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.checkout-section { background: #fff; border: 1px solid var(--gray-200); border-radius: var(--radius); padding: 26px; margin-bottom: 22px; }
.checkout-section h3 { margin: 0 0 18px; font-size: 17px; }
.mini-line { display: flex; gap: 12px; align-items: center; padding: 10px 0; border-bottom: 1px solid var(--gray-100); }
.mini-line img { width: 52px; height: 52px; object-fit: cover; border-radius: 6px; background: var(--gray-100); }
.mini-line-name { font-size: 13.5px; font-weight: 600; }
.mini-line-qty { font-size: 12px; color: var(--gray-500); }
.mini-line-price { font-size: 13.5px; font-weight: 700; margin-left: auto; }

/* ---------- Order success / tracking ---------- */
.success-box { max-width: 640px; margin: 60px auto; text-align: center; padding: 0 20px; }
.success-icon { width: 88px; height: 88px; border-radius: 50%; background: var(--success-light); color: var(--success); display: flex; align-items: center; justify-content: center; font-size: 40px; margin: 0 auto 24px; }
.order-number-box { background: var(--gray-100); border-radius: var(--radius-sm); padding: 16px; font-size: 20px; font-weight: 800; letter-spacing: 1px; margin: 20px 0; }
.track-box { max-width: 480px; margin: 50px auto; padding: 0 20px; }
.status-track { display: flex; justify-content: space-between; margin: 30px 0; position: relative; }
.status-step { flex: 1; text-align: center; position: relative; z-index: 1; }
.status-dot { width: 30px; height: 30px; border-radius: 50%; background: var(--gray-200); color: var(--gray-500); display: flex; align-items: center; justify-content: center; margin: 0 auto 8px; font-size: 13px; font-weight: 700; }
.status-step.done .status-dot { background: var(--success); color: #fff; }
.status-step.active .status-dot { background: var(--primary); color: #fff; }
.status-label { font-size: 12px; font-weight: 600; color: var(--gray-500); }
.status-step.done .status-label, .status-step.active .status-label { color: var(--gray-900); }

/* ---------- Footer ---------- */
.site-footer { background: var(--gray-900); color: #d1d5db; margin-top: 40px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 30px; padding: 56px 24px 30px; max-width: 1240px; margin: 0 auto; }
.footer-grid h4 { color: #fff; margin: 0 0 16px; font-size: 15px; }
.footer-grid ul li { margin-bottom: 10px; font-size: 14px; color: #9ca3af; }
.footer-grid ul li a:hover { color: #fff; }
.footer-bottom { text-align: center; padding: 20px; font-size: 13px; color: #6b7280; border-top: 1px solid #1f2937; }

/* ---------- Toast ---------- */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--gray-900);
  color: #fff;
  padding: 14px 22px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  box-shadow: var(--shadow-lg);
  z-index: 999;
  display: flex;
  align-items: center;
  gap: 10px;
  transform: translateY(20px);
  opacity: 0;
  transition: all 0.25s ease;
  pointer-events: none;
}
.toast.show { transform: translateY(0); opacity: 1; }
.toast i { color: var(--success); }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .product-grid { grid-template-columns: repeat(3, 1fr); }
  .pdp-grid, .cart-layout, .checkout-layout, .footer-grid { grid-template-columns: 1fr; }
  .pdp-gallery { position: static; }
  .cart-summary { position: static; }
  .hero-inner { grid-template-columns: 1fr; text-align: center; }
  .hero p { margin-left: auto; margin-right: auto; }
  .hero-actions { justify-content: center; }
}
@media (max-width: 720px) {
  .main-nav { display: none; }
  .mobile-menu-btn { display: block; }
  .search-box { display: none; }
  .product-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .hero h1 { font-size: 32px; }
  .section { padding: 40px 16px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .cart-item { grid-template-columns: 60px 1fr; grid-template-rows: auto auto; }
}