/* MarketNest Design System — production polish */
/* Fonts: Space Grotesk (display), DM Sans (body), JetBrains Mono (prices) */
@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:wght@400;600;700&family=DM+Sans:wght@400;500;600&family=JetBrains+Mono:wght@400;500;600&family=Space+Grotesk:wght@400;500;600;700&display=swap');

:root {
  /* Brand colors */
  --color-primary: #1e3a5f;
  --color-primary-light: #2a4a73;
  --color-primary-dark: #0f2744;
  --color-accent: #e87121;
  --color-accent-light: #f0923a;
  --color-accent-dark: #c45a10;
  --color-gold: #d4a017;
  --color-success: #16a34a;
  --color-error: #dc2626;
  --color-warning: #f59e0b;
  --color-bg: #f8f9fb;
  --color-surface: #ffffff;
  --color-text: #1a1a2e;
  --color-text-muted: #6b7280;
  --color-border: #e5e7eb;

  /* Legacy compat aliases */
  --navy: #1e3a5f;
  --navy-light: #2a4a73;
  --navy-mid: #2a4a73;
  --orange: #e87121;
  --orange-light: #f0923a;
  --orange-glow: rgba(232,113,33,0.12);
  --cream: #f8f9fb;
  --white: #ffffff;
  --gray-100: #f3f4f6;
  --gray-300: #d1d5db;
  --gray-500: #6b7280;
  --gray-700: #374151;

  /* Fonts */
  --font-display: 'Playfair Display', Georgia, serif;
  --font-heading: 'Space Grotesk', system-ui, sans-serif;
  --font-body: 'DM Sans', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Radii */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(30,58,95,0.08);
  --shadow-md: 0 4px 12px rgba(30,58,95,0.12);
  --shadow-lg: 0 8px 24px rgba(30,58,95,0.16);
  --shadow-xl: 0 16px 48px rgba(30,58,95,0.20);
}

/* ========== RESET & BASE ========== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scrollbar-width: thin;
  scrollbar-color: var(--color-primary) var(--color-border);
}

::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--color-border); }
::-webkit-scrollbar-thumb { background: var(--color-primary); border-radius: 3px; }

::selection { background: var(--color-accent); color: white; }

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

body {
  font-family: var(--font-body);
  background: var(--color-bg);
  color: var(--color-text);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

a { color: inherit; transition: color 150ms ease; }
button, a { cursor: pointer; }
img { max-width: 100%; display: block; }

/* ========== NAV ========== */
.app-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 0.875rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  gap: 1rem;
  transition: padding 150ms ease, box-shadow 150ms ease;
}

.app-nav.scrolled {
  padding: 0.6rem 2rem;
  box-shadow: var(--shadow-md);
}

.logo {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.4rem;
  color: var(--color-primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  white-space: nowrap;
  transition: opacity 150ms ease;
}

.logo:hover { opacity: 0.85; }

.logo-icon {
  width: 30px;
  height: 30px;
  background: var(--color-primary);
  border-radius: 7px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  flex-shrink: 0;
}

.logo-icon::after {
  content: '';
  width: 12px;
  height: 12px;
  border: 2px solid var(--color-accent);
  border-radius: 3px;
  transform: rotate(45deg);
}

.nav-search {
  flex: 1;
  max-width: 480px;
  position: relative;
}

.nav-search input {
  width: 100%;
  padding: 0.6rem 1rem 0.6rem 2.5rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-family: inherit;
  background: var(--color-bg);
  transition: border-color 150ms ease, background 150ms ease, box-shadow 150ms ease;
  outline: none;
}

.nav-search input:focus {
  border-color: var(--color-accent);
  background: var(--color-surface);
  box-shadow: 0 0 0 3px rgba(232,113,33,0.12);
}

.nav-search-icon {
  position: absolute;
  left: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-muted);
  pointer-events: none;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.nav-links-desktop {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  margin-right: 0.5rem;
}

.nav-link {
  padding: 0.4rem 0.75rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-muted);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: color 150ms ease, background 150ms ease;
}

.nav-link:hover { color: var(--color-text); background: var(--color-bg); }
.nav-link.active { color: var(--color-accent); }

.nav-btn {
  padding: 0.5rem 1.1rem;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  transition: all 150ms ease;
  border: none;
  font-family: inherit;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.btn-ghost { background: transparent; color: var(--gray-700); }
.btn-ghost:hover { background: var(--gray-100); }

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

.btn-orange { background: var(--color-accent); color: white; }
.btn-orange:hover { background: var(--color-accent-dark); }

.cart-btn {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 0.9rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-text);
  font-weight: 500;
  text-decoration: none;
  font-size: 0.875rem;
  font-family: inherit;
  transition: all 150ms ease;
}

.cart-btn:hover { border-color: var(--color-primary); }

.cart-badge {
  display: none;
  position: absolute;
  top: -7px;
  right: -7px;
  background: var(--color-accent);
  color: white;
  font-size: 0.6rem;
  font-weight: 700;
  min-width: 18px;
  height: 18px;
  border-radius: var(--radius-full);
  align-items: center;
  justify-content: center;
  border: 2px solid white;
  padding: 0 3px;
}

.cart-badge.show { display: flex; }

/* ========== LAYOUT ========== */
.page-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 2rem;
}

.page-container.narrow { max-width: 800px; }

/* ========== BUTTONS ========== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.65rem 1.4rem;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: all 150ms ease;
  border: none;
  font-family: inherit;
  white-space: nowrap;
}

.btn-sm { padding: 0.4rem 0.9rem; font-size: 0.8rem; border-radius: var(--radius-sm); }
.btn-lg { padding: 0.9rem 2rem; font-size: 1rem; border-radius: var(--radius-lg); }

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

.btn-orange-fill { background: var(--color-accent); color: white; }
.btn-orange-fill:hover { background: var(--color-accent-dark); transform: translateY(-1px); box-shadow: 0 4px 12px rgba(232,113,33,0.3); }

.btn-outline { background: transparent; border: 1.5px solid var(--color-border); color: var(--color-text); }
.btn-outline:hover { border-color: var(--color-primary); }

.btn-danger { background: #fee2e2; color: #dc2626; border: none; }
.btn-danger:hover { background: #fecaca; }

/* ========== PRODUCT GRID ========== */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1.5rem;
}

.product-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  overflow: hidden;
  text-decoration: none;
  color: var(--color-text);
  transition: box-shadow 250ms ease, transform 250ms ease;
  display: flex;
  flex-direction: column;
  position: relative;
}

.product-card:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-3px);
}

.product-card:hover .product-card-img img { transform: scale(1.05); }

.product-card-badges {
  position: absolute;
  top: 0.75rem;
  left: 0.75rem;
  display: flex;
  gap: 0.35rem;
  z-index: 2;
}

.badge-pill {
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-full);
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.badge-sale { background: var(--color-error); color: white; }
.badge-featured { background: var(--color-accent); color: white; }
.badge-new { background: var(--color-success); color: white; }

.wishlist-btn {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  z-index: 2;
  width: 32px;
  height: 32px;
  background: rgba(255,255,255,0.9);
  border: none;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 150ms ease;
  font-size: 1rem;
  backdrop-filter: blur(4px);
}

.wishlist-btn:hover { background: white; transform: scale(1.1); }
.wishlist-btn.active { color: var(--color-error); }

.product-card-img {
  aspect-ratio: 4/3;
  background: var(--color-bg);
  overflow: hidden;
  position: relative;
}

.product-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 300ms ease;
}

.product-card-img .img-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  background: linear-gradient(135deg, var(--gray-100), var(--gray-300));
}

/* Quick-add overlay */
.quick-add-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 0.75rem;
  background: linear-gradient(to top, rgba(30,58,95,0.9) 0%, transparent 100%);
  transform: translateY(100%);
  transition: transform 200ms ease;
  display: flex;
  justify-content: center;
}

.product-card:hover .quick-add-overlay { transform: translateY(0); }

.quick-add-btn {
  background: var(--color-accent);
  color: white;
  border: none;
  border-radius: var(--radius-md);
  padding: 0.5rem 1.25rem;
  font-size: 0.8rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: background 150ms ease;
  white-space: nowrap;
}

.quick-add-btn:hover { background: var(--color-accent-dark); }

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

.product-card-category {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-accent);
  margin-bottom: 0.3rem;
}

.product-card-name {
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--color-text);
  line-height: 1.4;
  margin-bottom: 0.5rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.product-rating {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.72rem;
  color: var(--color-text-muted);
  margin-bottom: 0.5rem;
}

.stars { color: var(--color-gold); letter-spacing: 0.5px; }

.product-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
  padding-top: 0.75rem;
  border-top: 1px solid var(--color-border);
}

.product-price {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--color-primary);
}

.product-price-compare {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  text-decoration: line-through;
  margin-left: 0.3rem;
  font-family: var(--font-mono);
}

.product-seller {
  font-size: 0.72rem;
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color 150ms ease;
}

.product-seller:hover { color: var(--color-accent); }

/* ========== SKELETON LOADING ========== */
.skeleton {
  background: linear-gradient(90deg, var(--color-border) 25%, #efefef 50%, var(--color-border) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.4s infinite;
  border-radius: var(--radius-md);
}

@keyframes shimmer { to { background-position: -200% 0; } }

.skeleton-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  overflow: hidden;
}

.skeleton-img { height: 180px; }
.skeleton-text { height: 14px; margin: 0.5rem 1rem; }
.skeleton-text.short { width: 60%; }
.skeleton-text.price { height: 20px; width: 40%; }

/* ========== SIDEBAR FILTERS ========== */
.marketplace-layout {
  display: grid;
  grid-template-columns: 230px 1fr;
  gap: 2rem;
  align-items: start;
}

.filters-sidebar {
  position: sticky;
  top: 5rem;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  border: 1px solid var(--color-border);
}

.filter-section { margin-bottom: 1.5rem; }

.filter-title {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  margin-bottom: 0.75rem;
}

.filter-option {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 0.7rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.875rem;
  color: var(--gray-700);
  text-decoration: none;
  transition: background 150ms ease, color 150ms ease;
  border: none;
  background: transparent;
  font-family: inherit;
  width: 100%;
  text-align: left;
}

.filter-option:hover,
.filter-option.active {
  background: var(--orange-glow);
  color: var(--color-accent);
}

.filter-option.active { font-weight: 600; }

/* Active filters chips */
.active-filters {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.filter-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.3rem 0.7rem;
  border-radius: var(--radius-full);
  background: var(--orange-glow);
  color: var(--color-accent);
  font-size: 0.78rem;
  font-weight: 600;
  border: 1px solid rgba(232,113,33,0.3);
}

.filter-chip-remove {
  background: none;
  border: none;
  cursor: pointer;
  color: inherit;
  padding: 0;
  font-size: 0.8rem;
  line-height: 1;
}

/* ========== CATEGORY CHIPS ========== */
.category-chips {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
  overflow-x: auto;
  padding-bottom: 0.25rem;
}

.category-chip {
  padding: 0.4rem 0.9rem;
  border-radius: var(--radius-full);
  background: var(--color-surface);
  color: var(--color-text);
  font-size: 0.82rem;
  font-weight: 500;
  text-decoration: none;
  transition: all 150ms ease;
  border: 1.5px solid var(--color-border);
  cursor: pointer;
  font-family: inherit;
  white-space: nowrap;
}

.category-chip:hover,
.category-chip.active {
  background: var(--orange-glow);
  color: var(--color-accent);
  border-color: rgba(232,113,33,0.4);
}

/* ========== FORMS ========== */
.form-group { margin-bottom: 1.25rem; }

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.4rem;
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 0.65rem 0.9rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-family: inherit;
  color: var(--color-text);
  background: var(--color-surface);
  transition: border-color 150ms ease, box-shadow 150ms ease;
  outline: none;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(232,113,33,0.12);
}

.form-textarea { resize: vertical; min-height: 100px; }
.form-hint { font-size: 0.78rem; color: var(--color-text-muted); margin-top: 0.3rem; }

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

/* ========== CARDS ========== */
.card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  padding: 1.5rem;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}

.card-title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text);
}

/* ========== STATS ========== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.stat-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.5rem;
  border: 1px solid var(--color-border);
  transition: box-shadow 150ms ease;
}

.stat-card:hover { box-shadow: var(--shadow-md); }

.stat-card-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--color-text-muted);
  margin-bottom: 0.5rem;
}

.stat-card-value {
  font-family: var(--font-mono);
  font-size: 1.8rem;
  font-weight: 600;
  color: var(--color-text);
}

.stat-card-value.orange { color: var(--color-accent); }
.stat-card-value.green { color: var(--color-success); }

/* ========== TABLES ========== */
.data-table { width: 100%; border-collapse: collapse; }

.data-table th {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--color-text-muted);
  padding: 0.75rem 1rem;
  border-bottom: 2px solid var(--color-border);
  text-align: left;
}

.data-table td {
  padding: 0.9rem 1rem;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.875rem;
  color: var(--gray-700);
}

.data-table tr:hover td { background: var(--color-bg); }

/* ========== ALERTS ========== */
.alert {
  padding: 0.85rem 1.1rem;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.alert-error { background: #fef2f2; color: #dc2626; border: 1px solid #fecaca; }
.alert-success { background: #f0fdf4; color: #16a34a; border: 1px solid #bbf7d0; }
.alert-warning { background: #fffbeb; color: #d97706; border: 1px solid #fde68a; }
.alert-info { background: var(--orange-glow); color: var(--color-accent); border: 1px solid rgba(232,113,33,0.3); }

/* ========== BADGE ========== */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.65rem;
  border-radius: var(--radius-full);
  font-size: 0.72rem;
  font-weight: 600;
}

.badge-green { background: #dcfce7; color: #16a34a; }
.badge-yellow { background: #fef9c3; color: #ca8a04; }
.badge-red { background: #fee2e2; color: #dc2626; }
.badge-blue { background: #dbeafe; color: #2563eb; }
.badge-gray { background: var(--gray-100); color: var(--gray-500); }
.badge-orange { background: var(--orange-glow); color: var(--color-accent); }

/* ========== MODAL ========== */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(15,27,45,0.6);
  z-index: 500;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  backdrop-filter: blur(4px);
}

.modal-overlay.open { display: flex; }

.modal {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  padding: 2rem;
  width: 100%;
  max-width: 520px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-xl);
  animation: modalIn 200ms ease;
}

@keyframes modalIn {
  from { transform: translateY(20px) scale(0.97); opacity: 0; }
  to { transform: translateY(0) scale(1); opacity: 1; }
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}

.modal-title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
}

.modal-close {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text-muted);
  font-size: 1.25rem;
  padding: 0.25rem;
  border-radius: var(--radius-sm);
  transition: background 150ms ease;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-close:hover { background: var(--color-bg); }

/* ========== EMPTY STATE ========== */
.empty-state {
  text-align: center;
  padding: 4rem 2rem;
  color: var(--color-text-muted);
}

.empty-state-icon { font-size: 3.5rem; margin-bottom: 1.25rem; }

.empty-state h3 {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  color: var(--color-text);
  margin-bottom: 0.5rem;
}

.empty-state p { font-size: 0.95rem; margin-bottom: 1.5rem; }

/* ========== TABS ========== */
.tabs {
  display: flex;
  gap: 0.25rem;
  border-bottom: 2px solid var(--color-border);
  margin-bottom: 2rem;
  overflow-x: auto;
}

.tab-btn {
  padding: 0.65rem 1.25rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-muted);
  background: none;
  border: none;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  font-family: inherit;
  transition: color 150ms ease;
  white-space: nowrap;
}

.tab-btn:hover { color: var(--color-text); }
.tab-btn.active { color: var(--color-accent); border-bottom-color: var(--color-accent); font-weight: 600; }

/* ========== PAGINATION ========== */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 2.5rem;
}

.page-btn {
  padding: 0.5rem 0.9rem;
  border-radius: var(--radius-md);
  border: 1.5px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  font-size: 0.875rem;
  cursor: pointer;
  font-family: inherit;
  transition: all 150ms ease;
  min-width: 40px;
  text-align: center;
}

.page-btn:hover,
.page-btn.active { border-color: var(--color-accent); color: var(--color-accent); }
.page-btn:disabled { opacity: 0.4; cursor: not-allowed; pointer-events: none; }

/* ========== TOAST ========== */
#toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.toast {
  padding: 0.85rem 1.25rem;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  animation: slideIn 250ms ease;
  max-width: 320px;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.toast-success { background: var(--color-primary); color: white; }
.toast-error { background: var(--color-error); color: white; }
.toast-warning { background: var(--color-warning); color: white; }

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

@keyframes slideOut {
  from { transform: translateX(0); opacity: 1; }
  to { transform: translateX(100%); opacity: 0; }
}

/* ========== LOADING ========== */
.loading-spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

.loading-spinner.dark {
  border: 2px solid rgba(30,58,95,0.2);
  border-top-color: var(--color-primary);
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ========== PAGE HEADER ========== */
.page-header {
  padding: 2.5rem 0 2rem;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 2rem;
}

.page-header h1 {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 0.25rem;
}

.page-header p { color: var(--color-text-muted); font-size: 0.95rem; }

/* ========== SECTION HEADERS ========== */
.section-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-accent);
  margin-bottom: 0.5rem;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.2;
}

/* ========== SELLER CARDS ========== */
.seller-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  overflow: hidden;
  text-decoration: none;
  color: var(--color-text);
  transition: box-shadow 250ms ease, transform 250ms ease;
  display: flex;
  flex-direction: column;
}

.seller-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-2px); }

.seller-banner {
  height: 80px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  position: relative;
}

.seller-avatar {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-full);
  border: 3px solid var(--color-surface);
  object-fit: cover;
  position: absolute;
  bottom: -20px;
  left: 1rem;
  background: var(--color-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  overflow: hidden;
}

.seller-card-body {
  padding: 1.5rem 1rem 1rem;
  margin-top: 1rem;
}

.seller-name {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 0.25rem;
}

.seller-meta {
  font-size: 0.78rem;
  color: var(--color-text-muted);
}

/* ========== REVIEW STYLES ========== */
.review-item {
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--color-border);
}

.review-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.5rem;
}

.review-author {
  font-weight: 600;
  font-size: 0.875rem;
}

.review-date {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.review-body {
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--color-text-muted);
  margin-top: 0.5rem;
}

/* ========== WISHLIST ========== */
.wishlist-page .products-grid { margin-top: 1.5rem; }

/* ========== RESPONSIVE ========== */
@media (max-width: 1024px) {
  .marketplace-layout { grid-template-columns: 1fr; }
  .filters-sidebar { position: static; display: none; }
  .filters-sidebar.mobile-open { display: block; }
}

@media (max-width: 768px) {
  .app-nav { padding: 0.75rem 1rem; }
  .nav-search { display: none; }
  .nav-links-desktop { display: none; }
  .form-row { grid-template-columns: 1fr; }
  .page-container { padding: 1rem; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .products-grid { grid-template-columns: repeat(2, 1fr); gap: 1rem; }
}

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