* { box-sizing: border-box; }
:root {
  --electric-blue: #0057ff;
  --electric-blue-2: #2d8cff;
  --surface: #ffffff;
  --surface-soft: #f8fbff;
  --border-soft: #dbe4ff;
  --text-main: #1f2937;
}
body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: radial-gradient(circle at top right, #eef4ff 0%, #f5f8ff 45%, #eef6ff 100%);
  color: var(--text-main);
}
a { color: var(--electric-blue); text-decoration: none; }

.topbar {
  padding: 14px 22px;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border-soft);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 6px 20px rgba(0, 87, 255, 0.08);
}
.topbar-inner {
  width: min(1220px, 96%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 180px 1fr auto;
  align-items: center;
  gap: 14px;
}
.brand {
  color: var(--electric-blue);
  font-size: 1.2rem;
  font-weight: 700;
  text-shadow: 0 0 16px rgba(0, 87, 255, 0.16);
}
.topbar nav { display: flex; gap: 10px; font-size: 0.95rem; }
.topbar nav a {
  padding: 7px 10px;
  border-radius: 8px;
  transition: all 0.2s ease;
}
.topbar nav a:hover {
  background: #edf3ff;
  color: var(--electric-blue);
}
.header-search { display: flex; gap: 8px; }
.header-search input {
  background: #fff;
  color: #111827;
  border: 1px solid var(--border-soft);
  box-shadow: inset 0 0 0 1px rgba(0, 87, 255, 0.02);
}
.header-search button { width: auto; padding: 10px 14px; }

.container { width: min(1100px, 92%); margin: 28px auto; }
.home-premium .container { width: min(1280px, 96%); }
.site-layout {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
}
.site-sidebar {
  border: 1px solid #c9d9ff;
  background: linear-gradient(180deg, #ffffff 0%, #f4f8ff 100%);
  box-shadow: 0 10px 28px rgba(0, 87, 255, 0.08);
}
.site-main-content {
  min-width: 0;
}
.catalog-layout {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
}
.catalog-sidebar {
  align-self: start;
  position: sticky;
  top: 86px;
  max-height: calc(100vh - 110px);
  overflow: auto;
  box-shadow: 0 10px 28px rgba(0, 87, 255, 0.08);
  border: 1px solid #c9d9ff;
  background: linear-gradient(180deg, #ffffff 0%, #f4f8ff 100%);
}
.catalog-content {
  min-width: 0;
}
.catalog-content > section {
  margin-bottom: 16px;
}
.hero { margin-bottom: 20px; }
.home-premium .hero {
  padding: 18px 20px;
  border-radius: 14px;
  border: 1px solid #caddff;
  background: linear-gradient(135deg, #ffffff 0%, #eef4ff 48%, #e5f0ff 100%);
  box-shadow: 0 16px 30px rgba(0, 87, 255, 0.11);
}
.muted-text { color: #6b7280; font-size: 0.9rem; }
.badge {
  display: inline-block;
  margin-top: 8px;
  padding: 6px 10px;
  background: #e6eeff;
  border-radius: 6px;
  color: #0057ff;
}

.grid, .kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border-soft);
  border-radius: 12px;
  padding: 16px;
  box-shadow: 0 6px 18px rgba(0, 87, 255, 0.08);
}
.catalog-card {
  position: relative;
  overflow: hidden;
  transition: transform 0.24s ease, box-shadow 0.24s ease, border-color 0.24s ease;
}
.catalog-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 30px rgba(0, 87, 255, 0.16);
  border-color: #b9ccff;
}
.catalog-card::before {
  content: "";
  position: absolute;
  inset: -40% -120%;
  background: linear-gradient(120deg, transparent 0%, rgba(255,255,255,0.5) 48%, transparent 52%);
  transform: translateX(-20%);
  pointer-events: none;
  transition: transform 0.6s ease;
}
.catalog-card:hover::before {
  transform: translateX(35%);
}

.product-carousel {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: #eef4ff;
  border-radius: 10px;
  overflow: hidden;
  margin-bottom: 10px;
}
.product-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: none;
}
.product-image.active { display: block; }
.carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 34px;
  height: 34px;
  border-radius: 999px;
  border: 0;
  background: rgba(0, 87, 255, 0.82);
  color: #fff;
  cursor: pointer;
}
.carousel-btn.prev { left: 8px; }
.carousel-btn.next { right: 8px; }

.short-description {
  min-height: 38px;
}
.expand-description summary {
  cursor: pointer;
  color: #0057ff;
  font-weight: 600;
}

.banner-carousel {
  position: relative;
  margin-bottom: 18px;
  border-radius: 12px;
  overflow: hidden;
  min-height: 220px;
  background: #fff;
  border: 1px solid var(--border-soft);
  box-shadow: 0 10px 26px rgba(0, 87, 255, 0.1);
}
.banner-slide {
  display: none;
}
.banner-slide.active {
  display: block;
}
.banner-slide img {
  width: 100%;
  height: 280px;
  object-fit: cover;
  display: block;
}
.home-premium .banner-carousel { min-height: 280px; }
.home-premium .banner-slide img { height: 320px; }
.banner-carousel .carousel-btn.prev { left: 8px; }
.banner-carousel .carousel-btn.next { right: 8px; }

.price { font-size: 1.2rem; font-weight: bold; margin: 10px 0; color: var(--electric-blue); }
.kpi { font-size: 2rem; margin: 8px 0; color: var(--electric-blue); }

button {
  width: 100%;
  border: 0;
  background: linear-gradient(90deg, var(--electric-blue), var(--electric-blue-2));
  color: white;
  padding: 10px 12px;
  border-radius: 8px;
  cursor: pointer;
}

.btn-link {
  display: inline-block;
  margin-top: 8px;
  border: 0;
  background: linear-gradient(90deg, var(--electric-blue), var(--electric-blue-2));
  color: #fff;
  padding: 10px 12px;
  border-radius: 8px;
}
.btn-link.disabled {
  opacity: 0.5;
  pointer-events: none;
}

.cart-btn {
  margin-top: 6px;
}
.love-btn {
  margin-top: 6px;
  background: linear-gradient(90deg, #ff4f81, #ff7aa7);
}

.auth-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
}
.auth-card {
  width: min(420px, 92%);
  background: #ffffff;
  border: 1px solid #dbe4ff;
  padding: 24px;
  border-radius: 14px;
}
.auth-card form { display: grid; gap: 10px; }
input {
  width: 100%;
  padding: 10px;
  border-radius: 8px;
  border: 1px solid #bcd0ff;
  background: #ffffff;
  color: #1f2937;
}
textarea {
  width: 100%;
  padding: 10px;
  border-radius: 8px;
  border: 1px solid #bcd0ff;
  background: #ffffff;
  color: #1f2937;
}
.stack-form {
  display: grid;
  gap: 8px;
}
.alert.error {
  padding: 10px;
  border-radius: 8px;
  margin: 10px 0;
  background: #ffe5e5;
  color: #9b1c1c;
}
.back-link { display: inline-block; margin-top: 12px; }

table {
  width: 100%;
  border-collapse: collapse;
}
th, td {
  border-bottom: 1px solid #dbe4ff;
  padding: 10px 6px;
  text-align: left;
}

.feature-list {
  margin: 0;
  padding-left: 18px;
  line-height: 1.7;
}
.sidebar-menu {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}
.sidebar-menu-btn {
  display: grid;
  grid-template-columns: 24px 1fr;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid #cfe0ff;
  background: linear-gradient(180deg, #ffffff 0%, #f4f8ff 100%);
  color: #1341a9;
  font-weight: 600;
  box-shadow: 0 4px 10px rgba(0, 87, 255, 0.08);
  transition: all 0.2s ease;
}
.sidebar-menu-btn span {
  white-space: nowrap;
}
.sidebar-menu-btn:hover {
  transform: translateX(3px);
  border-color: #9fbfff;
  box-shadow: 0 8px 16px rgba(0, 87, 255, 0.16);
  background: linear-gradient(90deg, #eaf2ff 0%, #f7faff 100%);
}
.loved-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}
.loved-list li a {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 8px;
  align-items: center;
  padding: 6px;
  border-radius: 8px;
  background: #fff;
  border: 1px solid #e4ecff;
}
.loved-list img {
  width: 44px;
  height: 44px;
  object-fit: cover;
  border-radius: 6px;
}
.loved-list span {
  font-size: 0.85rem;
  color: #1f2937;
  line-height: 1.2;
}

.product-layout {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 16px;
}

.checkout-summary {
  background: #f8faff;
  border: 1px solid #dbe4ff;
  border-radius: 10px;
  padding: 12px;
  margin-bottom: 10px;
}

.footer {
  border-top: 1px solid #dbe4ff;
  margin-top: 30px;
  padding: 18px 22px;
  color: #4b5563;
  background: #ffffff;
}

.footer-links {
  display: flex;
  gap: 14px;
  margin-bottom: 8px;
}

.section-title {
  margin: 24px 0 12px;
  color: var(--electric-blue);
  letter-spacing: 0.2px;
}

.category-menu {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}

.category-pill {
  padding: 8px 12px;
  border: 1px solid #bcd0ff;
  border-radius: 999px;
  background: #fff;
  color: var(--electric-blue);
  font-size: 0.9rem;
}

.category-pill.active {
  background: var(--electric-blue);
  color: #fff;
}

.tag-badge {
  display: inline-block;
  margin-bottom: 8px;
  padding: 4px 9px;
  border-radius: 999px;
  background: #e6eeff;
  color: var(--electric-blue);
  font-size: 0.78rem;
  font-weight: 700;
}

.filter-bar {
  margin-bottom: 18px;
}

.filter-form {
  display: grid;
  grid-template-columns: 1fr 190px 190px 130px;
  gap: 8px;
}

.filter-form select,
.filter-form input {
  width: 100%;
  padding: 10px;
  border-radius: 8px;
  border: 1px solid #bcd0ff;
  background: #fff;
}

.pagination {
  margin-top: 16px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.page-ellipsis {
  display: inline-flex;
  align-items: center;
  padding: 0 2px;
  color: #6b7280;
}

.page-link {
  min-width: 36px;
  text-align: center;
  padding: 8px 10px;
  border: 1px solid #bcd0ff;
  border-radius: 8px;
  background: #fff;
  color: #0057ff;
}

.page-link.active {
  background: #0057ff;
  color: #fff;
}

.mini-cart {
  position: fixed;
  right: 18px;
  bottom: 18px;
  width: 230px;
  background: #fff;
  border: 1px solid #bcd0ff;
  border-radius: 14px;
  padding: 12px;
  box-shadow: 0 14px 28px rgba(0, 87, 255, 0.2);
  z-index: 1100;
}

.mini-cart-title {
  color: var(--electric-blue);
  font-weight: 700;
  margin-bottom: 8px;
}

.mini-cart-count,
.mini-cart-total {
  font-size: 0.9rem;
  margin-bottom: 6px;
}

.mini-cart-coupon {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 6px;
  margin-top: 8px;
}

.mini-cart-coupon button {
  width: auto;
}

.mini-cart-coupon-applied {
  font-size: 0.82rem;
  color: var(--electric-blue);
  margin-top: 6px;
}

.cart-table td input.cart-qty-input {
  max-width: 90px;
}

.cart-actions {
  margin-top: 16px;
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 14px;
}

.cart-coupon-block {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 8px;
  align-items: center;
}

.cart-summary-box {
  border: 1px solid #dbe4ff;
  border-radius: 12px;
  padding: 12px;
  background: #f8fbff;
}

.cart-summary-buttons {
  margin-top: 10px;
  display: flex;
  gap: 8px;
  align-items: center;
}

.light-btn {
  width: auto;
  background: #e8efff;
  color: #0057ff;
}

.danger-btn {
  width: auto;
  background: #ffe5e5;
  color: #9b1c1c;
}

.cart-flash {
  min-height: 20px;
  margin-bottom: 10px;
  font-size: 0.9rem;
}

.cart-flash.ok { color: #166534; }
.cart-flash.error { color: #9b1c1c; }

.banner-admin-form {
  display: grid;
  gap: 10px;
}
.banner-admin-row {
  display: grid;
  grid-template-columns: 1fr 2fr 2fr 90px;
  gap: 8px;
  padding: 10px;
  border: 1px solid #dbe4ff;
  border-radius: 8px;
  background: #f8fbff;
}
.banner-admin-row .check-col {
  display: grid;
  align-content: center;
  justify-items: center;
}

@media (max-width: 640px) {
  .site-layout { grid-template-columns: 1fr; }
  .catalog-layout { grid-template-columns: 1fr; }
  .catalog-sidebar { position: static; top: auto; }
  .product-layout { grid-template-columns: 1fr; }
  .topbar-inner { grid-template-columns: 1fr; }
  .filter-form { grid-template-columns: 1fr; }
  .cart-actions { grid-template-columns: 1fr; }
  .cart-coupon-block { grid-template-columns: 1fr; }
  .mini-cart { width: calc(100% - 24px); right: 12px; bottom: 12px; }
  .banner-admin-row { grid-template-columns: 1fr; }
  .banner-slide img { height: 180px; }
  .home-premium .banner-slide img { height: 190px; }
}