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

:root {
  --black: #111111;
  --white: #ffffff;
  --gray: #666666;
  --light: #f5f5f5;
  --border: #e0e0e0;
  --accent: #c8a96e;
  --red: #e53935;
  --green: #2e7d32;
}

body { font-family: 'Segoe UI', sans-serif; color: var(--black); background: var(--white); }

a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
button { cursor: pointer; border: none; font-family: inherit; }

/* ── NAV ── */
nav {
  position: sticky; top: 0; z-index: 100;
  background: var(--black); color: var(--white);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 2rem; height: 64px;
}
.nav-logo { font-size: 1.4rem; font-weight: 700; letter-spacing: 2px; }
.nav-links { display: flex; gap: 2rem; font-size: 0.9rem; letter-spacing: 1px; }
.nav-links a:hover { color: var(--accent); }
.nav-right { display: flex; align-items: center; gap: 1.5rem; }
.cart-btn {
  background: var(--accent); color: var(--black);
  padding: 0.5rem 1.2rem; border-radius: 2px;
  font-size: 0.85rem; font-weight: 600; letter-spacing: 1px;
  display: flex; align-items: center; gap: 0.5rem;
}
.cart-count {
  background: var(--white); color: var(--black);
  border-radius: 50%; width: 20px; height: 20px;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 0.75rem; font-weight: 700;
}

/* ── HERO ── */
.hero {
  background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
  color: var(--white); text-align: center;
  padding: 6rem 2rem;
}
.hero h1 { font-size: 3.5rem; letter-spacing: 4px; margin-bottom: 1rem; }
.hero p { font-size: 1.1rem; color: #aaa; margin-bottom: 2rem; }
.btn-primary {
  background: var(--accent); color: var(--black);
  padding: 0.9rem 2.5rem; font-size: 0.9rem;
  font-weight: 700; letter-spacing: 2px; border-radius: 2px;
  display: inline-block; transition: opacity 0.2s;
}
.btn-primary:hover { opacity: 0.85; }

/* ── SECTION ── */
.section { padding: 4rem 2rem; max-width: 1300px; margin: 0 auto; }
.section-title { font-size: 1.6rem; letter-spacing: 2px; margin-bottom: 2rem; text-align: center; }

/* ── PRODUCT GRID ── */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 2rem;
}
.product-card {
  border: 1px solid var(--border);
  border-radius: 4px; overflow: hidden;
  transition: box-shadow 0.2s;
  cursor: pointer;
}
.product-card:hover { box-shadow: 0 4px 20px rgba(0,0,0,0.1); }
.product-img {
  width: 100%; height: 300px; object-fit: cover;
  background: var(--light);
}
.product-img-placeholder {
  width: 100%; height: 300px;
  background: var(--light);
  display: flex; align-items: center; justify-content: center;
  font-size: 3rem; color: #ccc;
}
.product-info { padding: 1rem; }
.product-name { font-size: 1rem; font-weight: 600; margin-bottom: 0.3rem; }
.product-category { font-size: 0.8rem; color: var(--gray); margin-bottom: 0.5rem; text-transform: uppercase; letter-spacing: 1px; }
.product-price { font-size: 1.1rem; font-weight: 700; color: var(--accent); }
.product-old-price { text-decoration: line-through; color: var(--gray); font-size: 0.9rem; margin-right: 0.5rem; }

/* ── CATEGORIES ── */
.categories { display: flex; gap: 1rem; flex-wrap: wrap; justify-content: center; margin-bottom: 2rem; }
.cat-btn {
  padding: 0.5rem 1.5rem; border: 2px solid var(--border);
  border-radius: 2px; font-size: 0.85rem; letter-spacing: 1px;
  background: var(--white); transition: all 0.2s;
}
.cat-btn:hover, .cat-btn.active {
  background: var(--black); color: var(--white); border-color: var(--black);
}

/* ── FILTERS ── */
.shop-layout { display: grid; grid-template-columns: 240px 1fr; gap: 2rem; }
.filters { border: 1px solid var(--border); padding: 1.5rem; border-radius: 4px; height: fit-content; }
.filter-title { font-size: 0.85rem; font-weight: 700; letter-spacing: 1px; margin-bottom: 1rem; }
.filter-group { margin-bottom: 1.5rem; }
.filter-group label { display: flex; align-items: center; gap: 0.5rem; font-size: 0.9rem; margin-bottom: 0.5rem; cursor: pointer; }
.filter-group input[type=checkbox] { accent-color: var(--black); }
.price-range { display: flex; gap: 0.5rem; align-items: center; }
.price-range input { width: 80px; padding: 0.4rem; border: 1px solid var(--border); border-radius: 2px; font-size: 0.85rem; }

/* ── PRODUCT DETAIL ── */
.product-detail { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; max-width: 1100px; margin: 2rem auto; padding: 0 2rem; }
.product-gallery { display: flex; flex-direction: column; gap: 1rem; }
.main-image { width: 100%; height: 500px; object-fit: cover; background: var(--light); border-radius: 4px; }
.thumb-row { display: flex; gap: 0.5rem; }
.thumb { width: 80px; height: 80px; object-fit: cover; border-radius: 2px; cursor: pointer; border: 2px solid transparent; }
.thumb.active { border-color: var(--black); }
.product-title { font-size: 2rem; letter-spacing: 1px; margin-bottom: 0.5rem; }
.product-detail-price { font-size: 1.8rem; color: var(--accent); font-weight: 700; margin: 1rem 0; }
.size-options { display: flex; gap: 0.5rem; flex-wrap: wrap; margin: 1rem 0; }
.size-btn {
  width: 48px; height: 48px; border: 2px solid var(--border);
  border-radius: 2px; font-size: 0.85rem; font-weight: 600;
  background: var(--white); transition: all 0.2s;
}
.size-btn:hover, .size-btn.active { border-color: var(--black); background: var(--black); color: var(--white); }
.color-options { display: flex; gap: 0.75rem; margin: 1rem 0; }
.color-btn {
  width: 36px; height: 36px; border-radius: 50%;
  border: 3px solid transparent; cursor: pointer;
  transition: border-color 0.2s;
}
.color-btn.active { border-color: var(--black); }
.qty-row { display: flex; align-items: center; gap: 1rem; margin: 1.5rem 0; }
.qty-control { display: flex; align-items: center; border: 1px solid var(--border); border-radius: 2px; }
.qty-control button { width: 40px; height: 40px; background: none; font-size: 1.2rem; }
.qty-control span { width: 48px; text-align: center; font-weight: 600; }
.add-to-cart-btn {
  background: var(--black); color: var(--white);
  padding: 1rem 2rem; font-size: 0.95rem; font-weight: 700;
  letter-spacing: 1px; border-radius: 2px; flex: 1;
  transition: background 0.2s;
}
.add-to-cart-btn:hover { background: #333; }

/* ── CART ── */
.cart-layout { display: grid; grid-template-columns: 1fr 360px; gap: 2rem; }
.cart-items { border: 1px solid var(--border); border-radius: 4px; overflow: hidden; }
.cart-item { display: grid; grid-template-columns: 100px 1fr auto; gap: 1rem; padding: 1rem; border-bottom: 1px solid var(--border); align-items: center; }
.cart-item img { width: 100px; height: 120px; object-fit: cover; border-radius: 2px; background: var(--light); }
.cart-item-name { font-weight: 600; margin-bottom: 0.3rem; }
.cart-item-meta { font-size: 0.85rem; color: var(--gray); }
.cart-item-price { font-weight: 700; font-size: 1.1rem; color: var(--accent); }
.remove-btn { background: none; color: var(--red); font-size: 0.85rem; margin-top: 0.5rem; padding: 0; }
.cart-summary { border: 1px solid var(--border); border-radius: 4px; padding: 1.5rem; height: fit-content; }
.summary-row { display: flex; justify-content: space-between; margin-bottom: 0.75rem; font-size: 0.95rem; }
.summary-total { font-size: 1.2rem; font-weight: 700; border-top: 1px solid var(--border); padding-top: 0.75rem; margin-top: 0.75rem; }
.checkout-btn {
  background: var(--black); color: var(--white);
  width: 100%; padding: 1rem; font-size: 1rem;
  font-weight: 700; letter-spacing: 1px; border-radius: 2px;
  margin-top: 1rem;
}
.checkout-btn:hover { background: #333; }

/* ── CHECKOUT ── */
.checkout-layout { display: grid; grid-template-columns: 1fr 360px; gap: 2rem; max-width: 1100px; margin: 0 auto; padding: 2rem; }
.form-group { margin-bottom: 1.2rem; }
.form-group label { display: block; font-size: 0.85rem; font-weight: 600; letter-spacing: 0.5px; margin-bottom: 0.4rem; }
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: 0.75rem; border: 1px solid var(--border);
  border-radius: 2px; font-size: 0.95rem; font-family: inherit;
  transition: border-color 0.2s;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  outline: none; border-color: var(--black);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.cod-badge {
  background: var(--light); border: 1px solid var(--border);
  border-radius: 4px; padding: 1rem; display: flex; align-items: center; gap: 0.75rem;
  margin-bottom: 1.5rem; font-size: 0.9rem;
}
.cod-icon { font-size: 1.5rem; }

/* ── ORDER CONFIRM ── */
.confirm-box { max-width: 600px; margin: 4rem auto; text-align: center; padding: 2rem; }
.confirm-icon { font-size: 4rem; margin-bottom: 1rem; }
.confirm-box h1 { font-size: 2rem; margin-bottom: 0.5rem; }
.order-details { text-align: left; background: var(--light); border-radius: 4px; padding: 1.5rem; margin: 2rem 0; }
.order-detail-row { display: flex; justify-content: space-between; margin-bottom: 0.5rem; font-size: 0.95rem; }

/* ── FOOTER ── */
footer {
  background: var(--black); color: #aaa;
  text-align: center; padding: 2rem;
  font-size: 0.85rem; margin-top: 4rem;
}
footer a { color: var(--accent); }

/* ── TOAST ── */
.toast {
  position: fixed; bottom: 2rem; right: 2rem;
  background: var(--black); color: var(--white);
  padding: 1rem 1.5rem; border-radius: 4px;
  font-size: 0.9rem; z-index: 9999;
  transform: translateY(100px); opacity: 0;
  transition: all 0.3s;
}
.toast.show { transform: translateY(0); opacity: 1; }

/* ── EMPTY STATE ── */
.empty { text-align: center; padding: 4rem 2rem; color: var(--gray); }
.empty-icon { font-size: 3rem; margin-bottom: 1rem; }

/* ── LOADING ── */
.loading { text-align: center; padding: 3rem; color: var(--gray); }
.spinner {
  width: 40px; height: 40px; border: 3px solid var(--border);
  border-top-color: var(--black); border-radius: 50%;
  animation: spin 0.8s linear infinite; margin: 0 auto 1rem;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── PAGE HEADER ── */
.page-header {
  background: var(--light); padding: 2.5rem 2rem; text-align: center;
  border-bottom: 1px solid var(--border);
}
.page-header h1 { font-size: 2rem; letter-spacing: 2px; }
.breadcrumb { font-size: 0.85rem; color: var(--gray); margin-top: 0.5rem; }
.breadcrumb a:hover { color: var(--accent); }

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
  nav { padding: 0 1rem; }
  .nav-links { display: none; }
  .hero h1 { font-size: 2rem; }
  .shop-layout, .product-detail, .cart-layout, .checkout-layout { grid-template-columns: 1fr; }
  .cart-item { grid-template-columns: 80px 1fr; }
  .filters { order: -1; }
}