:root {
  --color-bg: #f6f7f9;
  --color-surface: #ffffff;
  --color-text: #1c1d21;
  --color-muted: #6b7280;
  --color-border: #e4e6eb;
  --color-primary: #1428a0;
  --color-primary-dark: #0e1c6e;
  --color-accent: #ff6900;
  --color-success: #1e7e34;
  --color-error: #b3261e;
  --radius: 10px;
  --shadow: 0 2px 10px rgba(0, 0, 0, 0.06);
}

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

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.5;
}

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

.container {
  width: min(100% - 2rem, 72rem);
  margin-inline: auto;
}

/* Header */
.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 20;
}

.header-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
  padding-block: 0.9rem;
}

.logo {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-primary);
  flex-shrink: 0;
}

.logo span { color: var(--color-accent); }

.main-nav {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.main-nav a {
  color: var(--color-muted);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.3rem 0;
  border-bottom: 2px solid transparent;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.nav-link-button {
  background: none;
  border: none;
  padding: 0;
  font: inherit;
  color: var(--color-muted);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
}

.nav-link-button:hover {
  color: var(--color-primary);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-left: auto;
}

.search-form {
  display: flex;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  overflow: hidden;
  background: var(--color-bg);
}

.search-form input {
  border: none;
  background: transparent;
  padding: 0.5rem 0.9rem;
  font-size: 0.9rem;
  width: clamp(9rem, 20vw, 16rem);
  outline: none;
}

.search-form button {
  border: none;
  background: transparent;
  padding: 0.5rem 0.8rem;
  cursor: pointer;
  font-size: 1rem;
}

.cart-link {
  font-weight: 700;
  font-size: 1.1rem;
  position: relative;
  white-space: nowrap;
}

.cart-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent);
  color: white;
  border-radius: 999px;
  font-size: 0.7rem;
  min-width: 1.2rem;
  height: 1.2rem;
  padding: 0 0.3rem;
  vertical-align: top;
}

/* Flash messages */
.flash-container { margin-top: 1rem; }
.alert {
  padding: 0.8rem 1rem;
  border-radius: var(--radius);
  margin-bottom: 1rem;
  font-size: 0.95rem;
}
.alert-success { background: #e6f4ea; color: var(--color-success); border: 1px solid #b7dfc2; }
.alert-error { background: #fbeaea; color: var(--color-error); border: 1px solid #f0c2c0; }
.alert ul { margin: 0; padding-left: 1.2rem; list-style: disc; }

/* Hero */
.hero {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: white;
  padding-block: clamp(2.5rem, 6vw, 5rem);
}

.hero-inner {
  display: grid;
  gap: 1.5rem;
  text-align: center;
}

.hero h1 {
  font-size: clamp(1.8rem, 4vw + 1rem, 3rem);
  margin: 0 0 0.5rem;
}

.hero p {
  font-size: clamp(1rem, 1vw + 0.8rem, 1.2rem);
  color: #dbe0ff;
  max-width: 40rem;
  margin-inline: auto;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
}

.btn {
  display: inline-block;
  padding: 0.7rem 1.5rem;
  border-radius: 999px;
  font-weight: 700;
  border: 2px solid transparent;
  cursor: pointer;
  font-size: 0.95rem;
}

.btn-primary { background: var(--color-accent); color: white; }
.btn-primary:hover { background: #e55f00; }

.btn-outline {
  background: transparent;
  border-color: white;
  color: white;
}
.btn-outline:hover { background: rgba(255,255,255,0.15); }

.btn-secondary {
  background: var(--color-surface);
  border-color: var(--color-border);
  color: var(--color-text);
}
.btn-secondary:hover { border-color: var(--color-primary); color: var(--color-primary); }

.btn-danger {
  background: transparent;
  border-color: var(--color-error);
  color: var(--color-error);
  padding: 0.4rem 0.9rem;
  font-size: 0.85rem;
}
.btn-danger:hover { background: #fbeaea; }

section { padding-block: clamp(2rem, 4vw, 3.5rem); }

.section-title {
  font-size: clamp(1.4rem, 2vw + 0.8rem, 2rem);
  margin-bottom: 1.5rem;
  text-align: center;
}

/* Category tiles */
.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(11rem, 100%), 1fr));
  gap: 1.2rem;
}

.category-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem 1rem;
  text-align: center;
  box-shadow: var(--shadow);
  transition: transform 0.15s ease;
}

.category-card:hover { transform: translateY(-3px); }
.category-card .icon { font-size: 2.2rem; display: block; margin-bottom: 0.5rem; }
.category-card h3 { margin: 0 0 0.2rem; font-size: 1.05rem; }
.category-card p { margin: 0; color: var(--color-muted); font-size: 0.85rem; }

/* Brand strip */
.brand-strip {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2rem;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding-block: 1.5rem;
}

.brand-strip a {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--color-muted);
}
.brand-strip a:hover { color: var(--color-primary); }

/* Product grid */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(15rem, 100%), 1fr));
  gap: 1.4rem;
}

.product-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
}

.product-card .thumb {
  aspect-ratio: 1 / 1;
  background: #f4f5f7;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.8rem;
}

.product-card .thumb img { max-height: 100%; }

.product-card .body {
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  flex: 1;
}

.product-card .brand-tag {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-muted);
}

.product-card h3 {
  margin: 0;
  font-size: 1rem;
}

.product-card h3 a { color: var(--color-text); }
.product-card h3 a:hover { color: var(--color-primary); }

.product-card .specs {
  font-size: 0.78rem;
  color: var(--color-muted);
}

.product-card .price {
  margin-top: auto;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--color-primary-dark);
}

.product-card form { margin-top: 0.5rem; }
.product-card .btn { width: 100%; text-align: center; }

/* Products page layout: intrinsic sidebar (filters + content) */
.products-layout {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  align-items: flex-start;
}

.filters {
  flex-basis: 14rem;
  flex-grow: 1;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.2rem;
}

.filters h2 { font-size: 1.05rem; margin-top: 0; }

.filters .field {
  margin-bottom: 1rem;
}

.filters label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.3rem;
}

.filters select {
  width: 100%;
  padding: 0.5rem;
  border-radius: 6px;
  border: 1px solid var(--color-border);
  background: white;
  font-size: 0.9rem;
}

.results {
  flex-basis: 0;
  flex-grow: 999;
  min-width: 60%;
}

.results-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.results-header p { color: var(--color-muted); margin: 0; }

.empty-state {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--color-muted);
}

.pagination-wrap { margin-top: 2rem; }

.pagination {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  padding: 0;
  margin: 0;
}

.pagination .page-item { list-style: none; }

.pagination .page-link {
  display: inline-block;
  padding: 0.45rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  background: var(--color-surface);
  color: var(--color-primary);
  font-size: 0.9rem;
}

.pagination .page-item.active .page-link {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
}

.pagination .page-item.disabled .page-link {
  color: var(--color-muted);
}

/* Product detail */
.product-detail {
  display: flex;
  flex-wrap: wrap;
  gap: 2.5rem;
}

.product-detail .gallery {
  flex-basis: 18rem;
  flex-grow: 1;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.product-detail .info {
  flex-basis: 0;
  flex-grow: 999;
  min-width: 55%;
}

.product-detail .info .brand-tag {
  color: var(--color-muted);
  text-transform: uppercase;
  font-size: 0.85rem;
  letter-spacing: 0.05em;
}

.product-detail h1 { margin: 0.2rem 0 0.6rem; font-size: clamp(1.4rem, 2vw + 1rem, 2rem); }

.product-detail .price {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  margin-bottom: 1rem;
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.2rem 0;
  font-size: 0.9rem;
}

.spec-table td { padding: 0.4rem 0; border-bottom: 1px solid var(--color-border); }
.spec-table td:first-child { color: var(--color-muted); width: 40%; }

.qty-form { display: flex; align-items: center; gap: 0.8rem; margin-top: 1rem; }
.qty-form input[type="number"] {
  width: 4.5rem;
  padding: 0.5rem;
  border: 1px solid var(--color-border);
  border-radius: 6px;
}

.related-title { margin-top: 3rem; }

/* Tables that can't reflow scroll horizontally within their own box
   instead of breaking the page layout — no breakpoint needed. */
.table-scroll {
  overflow-x: auto;
}

/* Cart */
.cart-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
}

.cart-table th, .cart-table td {
  padding: 0.8rem;
  border-bottom: 1px solid var(--color-border);
  text-align: left;
  font-size: 0.9rem;
}

.cart-table .cart-product { display: flex; align-items: center; gap: 0.8rem; }
.cart-table .cart-product img { width: 3.2rem; height: 3.2rem; object-fit: contain; background: #f4f5f7; border-radius: 6px; padding: 0.3rem; }
.cart-table input[type="number"] { width: 4rem; padding: 0.35rem; border: 1px solid var(--color-border); border-radius: 6px; }

.cart-summary {
  margin-top: 1.5rem;
  display: flex;
  justify-content: flex-end;
  gap: 1.5rem;
  align-items: center;
  flex-wrap: wrap;
}

.cart-summary .total { font-size: 1.3rem; font-weight: 700; }

/* Forms */
.form-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.8rem;
  max-width: 40rem;
}

.form-grid { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(min(12rem, 100%), 1fr)); }

.field-full { grid-column: 1 / -1; }

.form-card label { display: block; font-weight: 600; font-size: 0.9rem; margin-bottom: 0.3rem; }

.form-card input, .form-card textarea, .form-card select {
  width: 100%;
  padding: 0.6rem 0.7rem;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-size: 0.95rem;
  font-family: inherit;
}

.form-card textarea { resize: vertical; min-height: 8rem; }

.checkout-layout {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  align-items: flex-start;
}

.checkout-layout .form-card { flex-basis: 20rem; flex-grow: 999; min-width: 55%; }
.order-summary {
  flex-basis: 14rem;
  flex-grow: 1;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.2rem;
}
.order-summary li { display: flex; justify-content: space-between; padding: 0.4rem 0; border-bottom: 1px solid var(--color-border); font-size: 0.9rem; }
.order-summary .total-row { font-weight: 700; font-size: 1.1rem; border-bottom: none; margin-top: 0.5rem; }

.confirmation-box {
  text-align: center;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 3rem 1.5rem;
  max-width: 36rem;
  margin-inline: auto;
}
.confirmation-box .icon { font-size: 3rem; }

/* About page */
.about-content { max-width: 48rem; margin-inline: auto; }
.about-content h1 { font-size: clamp(1.6rem, 2vw + 1rem, 2.2rem); }
.value-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(12rem, 100%), 1fr));
  gap: 1.2rem;
  margin-top: 2rem;
}
.value-grid .card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.2rem;
}

/* Footer */
.site-footer {
  background: #14161c;
  color: #c7c9d1;
  margin-top: 3rem;
}

.footer-inner {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(min(12rem, 100%), 1fr));
  padding-block: 2.5rem;
  align-items: start;
}

.site-footer .logo { color: white; }
.site-footer .logo span { color: var(--color-accent); }
.footer-nav { display: flex; flex-direction: column; gap: 0.5rem; }
.footer-nav a:hover { color: white; }
.copyright { font-size: 0.85rem; color: #8b8d97; }

/* Admin */
.admin-topbar {
  background: var(--color-primary);
  color: white;
}

.admin-topbar-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
  padding-block: 0.9rem;
}

.admin-topbar .logo { color: white; }
.admin-topbar-inner form { margin-left: auto; }

.admin-nav { display: flex; gap: 1.25rem; }
.admin-nav a { color: rgba(255,255,255,0.85); font-weight: 600; }
.admin-nav a:hover { color: white; }

.login-card {
  max-width: 24rem;
  margin-inline: auto;
}

.status-badge {
  display: inline-block;
  padding: 0.25rem 0.7rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 700;
  white-space: nowrap;
}

.status-pending { background: #fdf1d6; color: #92700f; }
.status-paid { background: #e0e7ff; color: var(--color-primary); }
.status-sent_to_supplier { background: #ffe8d6; color: #b3540c; }
.status-shipped { background: #dbeafe; color: #1d4ed8; }
.status-delivered { background: #e6f4ea; color: var(--color-success); }
.status-cancelled { background: #fbeaea; color: var(--color-error); }