:root {
  --brown: #6f4e37;
  --brown-dark: #4a3426;
  --brown-light: #8b6b52;
  --cream: #ede8d0;
  --cream-dark: #d9d0b4;
  --gold: #c9a227;
  --gold-light: #e8d48b;
  --white: #faf8f3;
  --shadow: 0 12px 40px rgba(74, 52, 38, 0.15);
  --radius: 16px;
  --font-display: "Cormorant Garamond", Georgia, serif;
  --font-body: "Inter", system-ui, sans-serif;
}

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

body {
  font-family: var(--font-body);
  background: linear-gradient(165deg, var(--cream) 0%, var(--white) 40%, #f5f0e6 100%);
  color: var(--brown-dark);
  min-height: 100vh;
  line-height: 1.5;
}

.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 2rem;
  background: linear-gradient(135deg, var(--brown) 0%, var(--brown-dark) 100%);
  color: var(--cream);
  box-shadow: var(--shadow);
}

.brand {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.brand-mark {
  font-size: 1.5rem;
  color: var(--gold-light);
}

.brand h1 {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.brand p {
  font-size: 0.8rem;
  opacity: 0.85;
  font-weight: 300;
}

.stats-pill {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.12);
  padding: 0.5rem 1rem;
  border-radius: 999px;
  font-size: 0.8rem;
}

.stats-pill .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #6bcb77;
  animation: pulse 2s ease infinite;
}

.stats-pill.offline .dot {
  background: #e74c3c;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}

.upload-section {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: 1fr;
}

@media (min-width: 900px) {
  .upload-section {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }
}

.upload-card {
  border: 2px dashed var(--brown-light);
  border-radius: var(--radius);
  padding: 3rem 2rem;
  text-align: center;
  background: var(--white);
  transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s;
  cursor: pointer;
}

.upload-card:hover,
.upload-card.dragover {
  border-color: var(--gold);
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}

.upload-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 1rem;
  color: var(--brown);
}

.upload-card h2 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
  color: var(--brown);
}

.upload-card p {
  font-size: 0.9rem;
  color: var(--brown-light);
  margin-bottom: 1.5rem;
}

.preview-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 1rem;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.preview-card img {
  width: 100%;
  max-height: 320px;
  object-fit: contain;
  border-radius: 12px;
  background: var(--cream);
}

.preview-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.btn-primary,
.btn-secondary {
  font-family: var(--font-body);
  font-weight: 500;
  padding: 0.75rem 1.5rem;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.btn-primary {
  background: linear-gradient(135deg, var(--brown) 0%, var(--brown-dark) 100%);
  color: var(--cream);
  flex: 1;
  min-width: 160px;
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(111, 78, 55, 0.35);
}

.btn-primary:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

.btn-secondary {
  background: transparent;
  color: var(--brown);
  border: 1px solid var(--brown-light);
}

.btn-spinner {
  width: 18px;
  height: 18px;
  border: 2px solid rgba(237, 232, 208, 0.3);
  border-top-color: var(--cream);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

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

.hidden {
  display: none !important;
}

.results-section,
.skeleton-section {
  margin-top: 2.5rem;
}

.results-header {
  margin-bottom: 1.5rem;
}

.results-header h2 {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--brown);
}

.results-header p {
  color: var(--brown-light);
  font-size: 0.95rem;
}

.results-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.25rem;
}

.match-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  animation: fadeUp 0.4s ease backwards;
}

.match-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 50px rgba(74, 52, 38, 0.2);
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.match-card .image-wrap {
  aspect-ratio: 1;
  background: var(--cream);
  overflow: hidden;
}

.match-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

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

.match-card .body {
  padding: 1rem 1.1rem 1.2rem;
}

.match-card .sku {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--brown-light);
  margin-bottom: 0.25rem;
}

.match-card .name {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--brown);
  margin-bottom: 0.75rem;
  line-height: 1.3;
}

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

.similarity-row span {
  font-size: 0.85rem;
  font-weight: 500;
}

.similarity-bar {
  height: 6px;
  background: var(--cream-dark);
  border-radius: 999px;
  overflow: hidden;
  margin-bottom: 0.75rem;
}

.similarity-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--brown-light), var(--gold));
  border-radius: 999px;
  width: 0;
  transition: width 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}

.badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
}

.badge.high {
  background: rgba(46, 125, 50, 0.15);
  color: #2e7d32;
}

.badge.medium {
  background: rgba(201, 162, 39, 0.2);
  color: #8a6d0a;
}

.badge.low {
  background: rgba(183, 28, 28, 0.12);
  color: #b71c1c;
}

.skeleton-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.skeleton-card .sk-image {
  aspect-ratio: 1;
  background: linear-gradient(90deg, var(--cream) 25%, var(--cream-dark) 50%, var(--cream) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.2s infinite;
}

.skeleton-card .sk-body {
  padding: 1rem;
}

.skeleton-card .sk-line {
  height: 12px;
  background: linear-gradient(90deg, var(--cream) 25%, var(--cream-dark) 50%, var(--cream) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.2s infinite;
  border-radius: 4px;
  margin-bottom: 0.5rem;
}

.skeleton-card .sk-line.short { width: 40%; }
.skeleton-card .sk-line.mid { width: 70%; }
.skeleton-card .sk-line.long { width: 100%; }

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.footer {
  text-align: center;
  padding: 2rem;
  font-size: 0.8rem;
  color: var(--brown-light);
}

.error-toast {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  background: #b71c1c;
  color: white;
  padding: 0.75rem 1.5rem;
  border-radius: 999px;
  font-size: 0.9rem;
  box-shadow: var(--shadow);
  z-index: 1000;
  animation: fadeUp 0.3s ease;
}