/* ─── Custom Properties ─────────────────────────────────────────────────────── */
:root {
  --color-primary: #2d6a4f;
  --color-primary-dark: #1b4332;
  --color-secondary: #40916c;
  --color-accent: #95d5b2;
  --color-bg: #f8f9fa;
  --color-bg-alt: #f1f3f0;
  --color-card-bg: #ffffff;
  --color-text: #1a1a2e;
  --color-text-muted: #6c757d;
  --color-border: #dee2e6;
  --color-dark: #1a1a2e;
  --color-white: #ffffff;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.10);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --transition: 0.2s ease;
  --font-body: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-body);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-primary); text-decoration: none; }
a:hover { color: var(--color-secondary); }
ul { list-style: none; padding: 0; margin: 0; }

/* ─── Layout ────────────────────────────────────────────────────────────────── */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 4rem 0;
}

.section-title {
  font-size: 2rem;
  font-weight: 700;
  margin: 0 0 0.5rem;
  color: var(--color-text);
}

.section-subtitle {
  color: var(--color-text-muted);
  font-size: 1.1rem;
  margin: 0 0 2.5rem;
}

/* ─── Header & Nav ──────────────────────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-dark);
  color: var(--color-white);
  box-shadow: var(--shadow-md);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.5rem;
  height: 64px;
}

.site-logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-accent);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
}

.site-logo:hover { color: var(--color-white); }

.site-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-link {
  color: rgba(255,255,255,0.85);
  padding: 0.5rem 0.875rem;
  border-radius: var(--radius-sm);
  font-size: 0.9375rem;
  transition: background var(--transition), color var(--transition);
}

.nav-link:hover {
  background: rgba(255,255,255,0.1);
  color: var(--color-white);
}

.nav-cart {
  background: var(--color-primary);
  color: var(--color-white) !important;
  padding: 0.4rem 1rem;
  border-radius: var(--radius-lg);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  transition: background var(--transition);
}

.nav-cart:hover {
  background: var(--color-secondary) !important;
  color: var(--color-white) !important;
}

.cart-count {
  background: var(--color-accent);
  color: var(--color-dark);
  border-radius: 50%;
  width: 20px;
  height: 20px;
  font-size: 0.75rem;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-white);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

/* Mobile nav */
.mobile-nav {
  display: none;
  flex-direction: column;
  background: var(--color-primary-dark);
  padding: 1rem 1.5rem;
  gap: 0.25rem;
}

.mobile-nav .nav-link {
  display: block;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
}

/* ─── Hero ──────────────────────────────────────────────────────────────────── */
.hero {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
  color: var(--color-white);
  padding: 6rem 1.5rem;
  text-align: center;
}

.hero-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  margin: 0 0 1rem;
  line-height: 1.2;
}

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

.hero-subtitle {
  font-size: 1.25rem;
  opacity: 0.9;
  margin: 0 0 2.5rem;
}

/* ─── Buttons ───────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-lg);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-white);
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  color: var(--color-white);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background: transparent;
  color: var(--color-white);
  border: 2px solid rgba(255,255,255,0.6);
}

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

.btn-secondary {
  background: var(--color-bg-alt);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

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

.btn-danger {
  background: #dc3545;
  color: var(--color-white);
}

.btn-danger:hover {
  background: #b02a37;
  color: var(--color-white);
}

.btn-sm {
  padding: 0.4rem 0.875rem;
  font-size: 0.875rem;
}

.btn-lg {
  padding: 1rem 2.5rem;
  font-size: 1.125rem;
}

/* ─── Cards ─────────────────────────────────────────────────────────────────── */
.card {
  background: var(--color-card-bg);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.card-body {
  padding: 1.25rem;
}

.card-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin: 0 0 0.5rem;
  color: var(--color-text);
}

.card-description {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin: 0 0 1rem;
  line-height: 1.5;
}

/* ─── Product Grid ──────────────────────────────────────────────────────────── */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

.product-image {
  width: 100%;
  height: 200px;
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-secondary) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
}

.product-price {
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--color-primary);
  margin: 0 0 1rem;
}

.badge {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
}

.badge-success {
  background: #d1fae5;
  color: #065f46;
}

.badge-warning {
  background: #fef3c7;
  color: #92400e;
}

.badge-primary {
  background: #d1fae5;
  color: var(--color-primary-dark);
}

/* ─── Category Pills ────────────────────────────────────────────────────────── */
.category-filter {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  padding-bottom: 0.5rem;
  margin-bottom: 2rem;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.category-filter::-webkit-scrollbar { display: none; }

.category-pill {
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-lg);
  font-size: 0.875rem;
  font-weight: 600;
  white-space: nowrap;
  border: 2px solid var(--color-border);
  background: var(--color-card-bg);
  color: var(--color-text);
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}

.category-pill:hover,
.category-pill.active {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

/* ─── Category Cards ────────────────────────────────────────────────────────── */
.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

.category-card {
  background: var(--color-card-bg);
  border-radius: var(--radius-md);
  padding: 2rem;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  text-decoration: none;
  display: block;
  color: var(--color-text);
}

.category-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  color: var(--color-text);
}

.category-card-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.category-card-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin: 0 0 0.5rem;
}

.category-card-desc {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin: 0;
}

/* ─── Features / Why Us ─────────────────────────────────────────────────────── */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 2rem;
}

.feature-card {
  text-align: center;
  padding: 2rem 1.5rem;
  border-radius: var(--radius-md);
  background: var(--color-card-bg);
  box-shadow: var(--shadow-sm);
}

.feature-icon { font-size: 2.5rem; margin-bottom: 1rem; }

.feature-title {
  font-size: 1.125rem;
  font-weight: 700;
  margin: 0 0 0.5rem;
}

.feature-text {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin: 0;
}

/* ─── Forms ─────────────────────────────────────────────────────────────────── */
.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.4rem;
  font-size: 0.9375rem;
}

.form-control {
  width: 100%;
  padding: 0.625rem 0.875rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-family: inherit;
  background: var(--color-white);
  color: var(--color-text);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(45, 106, 79, 0.15);
}

textarea.form-control {
  resize: vertical;
  min-height: 120px;
}

/* ─── Cart ──────────────────────────────────────────────────────────────────── */
.cart-table {
  width: 100%;
  border-collapse: collapse;
}

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

.cart-table th {
  font-weight: 700;
  font-size: 0.875rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.quantity-input {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.quantity-btn {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1.5px solid var(--color-border);
  background: var(--color-white);
  font-size: 1.1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}

.quantity-btn:hover {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.quantity-display {
  min-width: 2rem;
  text-align: center;
  font-weight: 700;
}

/* ─── Cart Summary / Order Summary ─────────────────────────────────────────── */
.order-summary {
  background: var(--color-card-bg);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
}

.order-summary-row {
  display: flex;
  justify-content: space-between;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--color-border);
}

.order-summary-total {
  display: flex;
  justify-content: space-between;
  padding: 0.75rem 0 0;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary);
}

/* ─── Checkout Layout ───────────────────────────────────────────────────────── */
.checkout-grid {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 2rem;
  align-items: start;
}

/* ─── Alerts ─────────────────────────────────────────────────────────────────── */
.alert {
  padding: 1rem 1.25rem;
  border-radius: var(--radius-sm);
  margin-bottom: 1rem;
  font-size: 0.9375rem;
}

.alert-success {
  background: #d1fae5;
  color: #065f46;
  border-left: 4px solid #10b981;
}

.alert-error {
  background: #fee2e2;
  color: #991b1b;
  border-left: 4px solid #ef4444;
}

.alert-info {
  background: #dbeafe;
  color: #1e40af;
  border-left: 4px solid #3b82f6;
}

/* ─── Empty State ───────────────────────────────────────────────────────────── */
.empty-state {
  text-align: center;
  padding: 4rem 2rem;
  color: var(--color-text-muted);
}

.empty-state-icon { font-size: 4rem; margin-bottom: 1rem; }
.empty-state-title { font-size: 1.5rem; font-weight: 700; margin: 0 0 0.5rem; color: var(--color-text); }
.empty-state-text { margin: 0 0 1.5rem; }

/* ─── Product Detail ────────────────────────────────────────────────────────── */
.product-detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}

.product-detail-image {
  border-radius: var(--radius-md);
  overflow: hidden;
}

.product-detail-price {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-primary);
  margin: 1rem 0;
}

.product-detail-desc {
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: 1.5rem;
}

/* ─── About Page ────────────────────────────────────────────────────────────── */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.step-card {
  text-align: center;
  padding: 2rem;
}

.step-number {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-white);
  font-weight: 700;
  font-size: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
}

/* ─── Contact ───────────────────────────────────────────────────────────────── */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}

.contact-info-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  margin-bottom: 1.5rem;
}

.contact-info-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.contact-info-label {
  font-weight: 700;
  margin: 0 0 0.25rem;
}

.contact-info-text {
  color: var(--color-text-muted);
  margin: 0;
}

/* ─── Footer ────────────────────────────────────────────────────────────────── */
.site-footer {
  background: var(--color-dark);
  color: rgba(255,255,255,0.8);
  padding: 3rem 0 1.5rem;
  margin-top: 4rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-brand {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-accent);
  margin: 0 0 0.75rem;
}

.footer-desc {
  font-size: 0.9rem;
  opacity: 0.75;
  line-height: 1.6;
  margin: 0;
}

.footer-title {
  font-weight: 700;
  color: var(--color-white);
  margin: 0 0 0.75rem;
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-links li { margin-bottom: 0.4rem; }
.footer-links a {
  color: rgba(255,255,255,0.7);
  font-size: 0.9rem;
  transition: color var(--transition);
}

.footer-links a:hover { color: var(--color-accent); }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 1.25rem;
  text-align: center;
  font-size: 0.85rem;
  opacity: 0.6;
}

/* ─── Page Header ───────────────────────────────────────────────────────────── */
.page-header {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
  color: var(--color-white);
  padding: 3rem 1.5rem;
  text-align: center;
}

.page-header-title {
  font-size: 2.25rem;
  font-weight: 800;
  margin: 0 0 0.5rem;
}

.page-header-subtitle {
  opacity: 0.85;
  margin: 0;
  font-size: 1.05rem;
}

/* ─── Utility ───────────────────────────────────────────────────────────────── */
.text-center { text-align: center; }
.text-muted { color: var(--color-text-muted); }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.flex { display: flex; }
.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.back-link {
  color: var(--color-primary);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-bottom: 1.5rem;
}

/* ─── Responsive ────────────────────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .checkout-grid { grid-template-columns: 1fr; }
  .product-detail-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .hamburger { display: flex; }
  .site-nav { display: none; }
  .mobile-nav { display: flex; }
  .steps-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .cart-table { font-size: 0.875rem; }
  .cart-table th:nth-child(3),
  .cart-table td:nth-child(3) { display: none; }
  .hero { padding: 4rem 1.5rem; }
}

@media (max-width: 480px) {
  .product-grid { grid-template-columns: 1fr; }
  .category-grid { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr; }
}

/* ─── Add to cart feedback ──────────────────────────────────────────────────── */
.add-cart-btn {
  position: relative;
}

.add-cart-btn.added {
  background: var(--color-secondary);
}