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

:root {
  --bg: #f8f9fa;
  --card-bg: #ffffff;
  --text: #1a1a2e;
  --text-secondary: #6b7280;
  --accent: #2563eb;
  --accent-light: #dbeafe;
  --green: #059669;
  --orange: #d97706;
  --border: #e5e7eb;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-hover: 0 4px 12px rgba(0, 0, 0, 0.12);
  --radius: 12px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
header {
  background: #fff;
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text);
}

.logo img {
  height: 36px;
  width: auto;
}

.logo h1 {
  font-size: 1.25rem;
  font-weight: 700;
}

.last-updated {
  font-size: 0.8rem;
  color: var(--text-secondary);
  background: var(--accent-light);
  padding: 4px 12px;
  border-radius: 20px;
  white-space: nowrap;
}

/* Filters */
.filters {
  padding: 20px 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.filter-btn {
  padding: 8px 18px;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: #fff;
  color: var(--text-secondary);
  font-size: 0.875rem;
  cursor: pointer;
  transition: all 0.2s;
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.search-box {
  margin-left: auto;
  position: relative;
}

.search-box input {
  padding: 8px 16px 8px 36px;
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 0.875rem;
  width: 220px;
  outline: none;
  transition: border-color 0.2s;
}

.search-box input:focus {
  border-color: var(--accent);
}

.search-box::before {
  content: '\1F50D';
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 0.85rem;
}

/* Sort */
.sort-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 12px;
}

.sort-bar span {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.sort-select {
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.85rem;
  background: #fff;
  cursor: pointer;
  outline: none;
}

/* Cards Grid */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 16px;
  padding-bottom: 40px;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  transition: box-shadow 0.2s, transform 0.2s;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

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

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.card-brand {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.card-type {
  font-size: 0.7rem;
  color: var(--text-secondary);
  background: var(--bg);
  padding: 2px 8px;
  border-radius: 10px;
}

.card-model {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text);
}

.card-description {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.card-features {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.feature-tag {
  font-size: 0.7rem;
  padding: 3px 8px;
  background: var(--accent-light);
  color: var(--accent);
  border-radius: 6px;
  font-weight: 500;
}

.card-price {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

.price-range {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--green);
}

.price-range .price-max {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 400;
}

.card-rating {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 0.85rem;
  color: var(--orange);
  font-weight: 600;
}

.card-link {
  display: inline-block;
  text-align: center;
  padding: 10px 16px;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  transition: background 0.2s;
}

.card-link:hover {
  background: #1d4ed8;
}

/* Footer */
footer {
  background: #fff;
  border-top: 1px solid var(--border);
  padding: 24px 0;
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.8rem;
}

footer p + p {
  margin-top: 4px;
}

/* Responsive */
@media (max-width: 768px) {
  .cards-grid {
    grid-template-columns: 1fr;
  }

  .header-inner {
    flex-wrap: wrap;
  }

  .filters {
    flex-direction: column;
    align-items: stretch;
  }

  .search-box {
    margin-left: 0;
  }

  .search-box input {
    width: 100%;
  }

  .filter-btn {
    text-align: center;
  }
}

@media (max-width: 480px) {
  .logo h1 {
    font-size: 1rem;
  }

  .card {
    padding: 16px;
  }
}

/* No results */
.no-results {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-secondary);
}

.no-results h3 {
  font-size: 1.2rem;
  margin-bottom: 8px;
}