/* ===================================
   MERCANET - CATEGORÍAS
   Estilo moderno y consistente
   =================================== */

:root {
  --primary: #1e40af;
  --primary-dark: #1e3a8a;
  --primary-light: #3b82f6;
  --accent: #f59e0b;
  --accent-dark: #d97706;
  --success: #10b981;
  --danger: #ef4444;
  --white: #ffffff;
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;
  --shadow: 0 2px 8px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.1);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
  --radius: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;
  --radius-full: 9999px;
}

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

body {
  font-family: 'Inter', -apple-system, sans-serif;
  background: var(--gray-50);
  color: var(--gray-800);
  line-height: 1.6;
  min-height: 100vh;
}

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

/* ===== HEADER ===== */
.header {
  position: sticky;
  top: 0;
  background: var(--white);
  border-bottom: 1px solid var(--gray-200);
  z-index: 1000;
  transition: box-shadow 0.2s;
}

.header.scrolled {
  box-shadow: var(--shadow);
}

.header-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  gap: 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: var(--white);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.125rem;
}

.logo-text {
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--primary);
}

.search-box {
  flex: 1;
  max-width: 500px;
  display: flex;
  align-items: center;
  background: var(--gray-100);
  border: 2px solid transparent;
  border-radius: var(--radius-full);
  padding: 0 8px 0 18px;
  height: 46px;
  transition: all 0.2s;
}

.search-box:focus-within {
  background: var(--white);
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(30, 64, 175, 0.1);
}

.search-box i {
  color: var(--gray-400);
  margin-right: 12px;
}

.search-box input {
  flex: 1;
  border: none;
  background: none;
  font-size: 0.9375rem;
  outline: none;
}

.search-box button {
  padding: 8px 18px;
  background: var(--primary);
  color: var(--white);
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.875rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-links a {
  padding: 8px 14px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--gray-600);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s;
}

.nav-links a:hover {
  background: rgba(30, 64, 175, 0.08);
  color: var(--primary);
}

.nav-links .sell-btn {
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: var(--white) !important;
}

.user-area {
  margin-left: auto;
}

.login-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background: var(--primary);
  color: var(--white);
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.875rem;
}

.user-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 12px 6px 6px;
  border-radius: var(--radius-full);
  transition: background 0.2s;
}

.user-btn:hover {
  background: var(--gray-100);
}

.avatar {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.875rem;
}

.user-btn span {
  font-weight: 500;
  font-size: 0.875rem;
  color: var(--gray-700);
}

/* ===== MAIN ===== */
.main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px 100px;
}

/* Page Header */
.page-header {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  margin: 0 -24px 32px;
  padding: 48px 24px;
  text-align: center;
  color: var(--white);
}

.page-header h1 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

.page-header p {
  font-size: 1rem;
  opacity: 0.9;
}

/* Search Results */
.search-results {
  margin-bottom: 40px;
}

.results-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.results-header h2 {
  font-size: 1.125rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 10px;
}

.results-header h2 i {
  color: var(--accent);
}

.clear-search {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background: var(--gray-100);
  color: var(--danger);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 500;
  transition: all 0.2s;
}

.clear-search:hover {
  background: rgba(239, 68, 68, 0.1);
}

.results-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 20px;
}

/* Product Card */
.product-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all 0.25s;
}

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

.card-img {
  position: relative;
  aspect-ratio: 1;
  background: var(--gray-100);
}

.card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.card-badge {
  position: absolute;
  top: 10px;
  left: 10px;
  padding: 5px 12px;
  border-radius: 6px;
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
}

.card-badge.producto {
  background: var(--primary);
  color: white;
}

.card-badge.servicio {
  background: var(--success);
  color: white;
}

.card-body {
  padding: 14px;
}

.card-body h3 {
  font-size: 0.9375rem;
  font-weight: 500;
  margin-bottom: 6px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-body .location {
  font-size: 0.75rem;
  color: var(--gray-500);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 4px;
}

.card-body .location i {
  color: var(--accent);
}

.card-body .price {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--primary);
}

.no-results {
  text-align: center;
  padding: 60px 20px;
  background: var(--white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
}

.no-results i {
  font-size: 3rem;
  color: var(--gray-300);
  margin-bottom: 16px;
}

.no-results h3 {
  font-size: 1.25rem;
  margin-bottom: 8px;
  color: var(--gray-700);
}

.no-results p {
  color: var(--gray-500);
}

/* Categories Section */
.categories-section {
  margin-bottom: 40px;
}

.section-header {
  margin-bottom: 20px;
}

.section-header h2 {
  font-size: 1.25rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 10px;
}

.section-header h2 i {
  color: var(--primary);
}

.categories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

/* Category Card */
.category-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px;
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  transition: all 0.25s;
  border-left: 4px solid var(--cat-color, var(--primary));
}

.category-card:hover {
  transform: translateX(8px);
  box-shadow: var(--shadow-md);
}

.category-icon {
  width: 56px;
  height: 56px;
  background: color-mix(in srgb, var(--cat-color) 15%, transparent);
  color: var(--cat-color);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
}

.category-content {
  flex: 1;
}

.category-content h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--gray-800);
  margin-bottom: 4px;
}

.category-content p {
  font-size: 0.8125rem;
  color: var(--gray-500);
}

.category-arrow {
  color: var(--gray-400);
  transition: all 0.2s;
}

.category-card:hover .category-arrow {
  color: var(--cat-color);
  transform: translateX(4px);
}

/* Quick Links Section */
.quick-section {
  margin-bottom: 40px;
}

.quick-links {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
}

.quick-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 20px;
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  transition: all 0.2s;
}

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

.quick-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 1.125rem;
  flex-shrink: 0;
}

.quick-card span {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--gray-700);
}

/* ===== FOOTER ===== */
.footer {
  background: var(--gray-900);
  color: var(--white);
  padding: 48px 24px 24px;
  margin-top: 48px;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
}

.footer-logo {
  font-size: 1.25rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

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

.footer-brand p {
  color: var(--gray-400);
  font-size: 0.9375rem;
}

.footer-links h4 {
  margin-bottom: 16px;
  font-size: 1rem;
}

.footer-links a {
  display: block;
  color: var(--gray-400);
  margin-bottom: 10px;
  font-size: 0.9375rem;
  transition: color 0.2s;
}

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

.footer-bottom {
  max-width: 1200px;
  margin: 40px auto 0;
  padding-top: 24px;
  border-top: 1px solid var(--gray-700);
  text-align: center;
  color: var(--gray-500);
  font-size: 0.875rem;
}

/* ===== BOTTOM NAV ===== */
.bottom-nav {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 65px;
  background: var(--white);
  border-top: 1px solid var(--gray-200);
  justify-content: space-around;
  align-items: center;
  z-index: 1000;
}

.bottom-nav a {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  font-size: 0.625rem;
  color: var(--gray-400);
  padding: 8px 12px;
}

.bottom-nav a i {
  font-size: 1.25rem;
}

.bottom-nav a.active {
  color: var(--primary);
}

.bottom-nav .sell {
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: var(--white) !important;
  border-radius: 50%;
  margin-top: -25px;
  box-shadow: 0 4px 15px rgba(245, 158, 11, 0.4);
  justify-content: center;
}

.bottom-nav .sell span {
  display: none;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .header-inner {
    padding: 12px 16px;
  }

  .logo-text, .nav-links, .user-btn span {
    display: none;
  }

  .search-box {
    display: none;
  }

  .main {
    padding: 0 16px 90px;
  }

  .page-header {
    margin: 0 -16px 24px;
    padding: 32px 16px;
  }

  .page-header h1 {
    font-size: 1.5rem;
  }

  .categories-grid {
    grid-template-columns: 1fr;
  }

  .category-card {
    padding: 16px;
  }

  .category-icon {
    width: 48px;
    height: 48px;
    font-size: 1.25rem;
  }

  .quick-links {
    grid-template-columns: repeat(2, 1fr);
  }

  .quick-card {
    flex-direction: column;
    text-align: center;
    padding: 20px 16px;
    gap: 10px;
  }

  .results-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .card-body {
    padding: 10px;
  }

  .card-body h3 {
    font-size: 0.8125rem;
  }

  .card-body .price {
    font-size: 1rem;
  }

  .footer {
    display: none;
  }

  .bottom-nav {
    display: flex;
  }
}

@media (max-width: 480px) {
  .results-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .quick-links {
    grid-template-columns: 1fr;
  }

  .quick-card {
    flex-direction: row;
    text-align: left;
  }
}