/* Reset & Base */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --color-bg: #0d0d0d;
  --color-surface: #1a1a1a;
  --color-text: #e0e0e0;
  --color-text-muted: #888;
  --color-accent: #c8a45c;
  --color-error: #e05555;
  --radius: 8px;
  --max-width: 1400px;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
    Ubuntu, Cantarell, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  min-height: 100vh;
  line-height: 1.6;
}

/* Header */
.header {
  text-align: center;
  padding: 3rem 1rem 2rem;
}

.header h1 {
  font-size: 2.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #fff;
}

.subtitle {
  color: var(--color-text-muted);
  margin-top: 0.5rem;
  font-size: 1rem;
}

/* Gallery Grid */
.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
  padding: 0 1.5rem 3rem;
  max-width: var(--max-width);
  margin: 0 auto;
}

.gallery__item {
  position: relative;
  display: block;
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--color-surface);
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  aspect-ratio: 4 / 3;
}

.gallery__item:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

.gallery__item:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.gallery__thumb {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.3s ease;
}

.gallery__item:hover .gallery__thumb {
  transform: scale(1.05);
}

.gallery__thumb--broken {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-surface);
  color: var(--color-text-muted);
  font-size: 0.85rem;
  text-align: center;
  padding: 1rem;
}

.gallery__caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 0.75rem 1rem;
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.75));
  font-size: 0.85rem;
  color: #fff;
  opacity: 0;
  transition: opacity 0.2s ease;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.gallery__item:hover .gallery__caption {
  opacity: 1;
}

/* Loading */
.loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 4rem 1rem;
  color: var(--color-text-muted);
  gap: 1rem;
}

.loading.hidden {
  display: none;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--color-surface);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* Error */
.error {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--color-error);
}

.error.hidden {
  display: none;
}

.error button {
  margin-top: 1rem;
  padding: 0.6rem 1.5rem;
  border: 1px solid var(--color-error);
  background: transparent;
  color: var(--color-error);
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 0.9rem;
  transition: background 0.2s, color 0.2s;
}

.error button:hover {
  background: var(--color-error);
  color: #fff;
}

/* Empty State */
.empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 3rem;
  color: var(--color-text-muted);
  font-size: 1.1rem;
}

/* Responsive */
@media (max-width: 640px) {
  .header h1 {
    font-size: 1.75rem;
  }

  .gallery {
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 0.5rem;
    padding: 0 0.75rem 2rem;
  }
}