:root {
  color-scheme: light dark;
  --bg: #fafafa;
  --fg: #1a1a1a;
  --muted: #6b6b6b;
  --accent: #2563eb;
  --danger: #dc2626;
  --border: #e2e2e2;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121212;
    --fg: #f0f0f0;
    --muted: #9a9a9a;
    --border: #2d2d2d;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--fg);
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 1.5rem 3rem;
}

/* Header / nav */

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border);
}

.site-header .brand {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--fg);
}

.site-header nav {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.site-footer {
  text-align: center;
  color: var(--muted);
  padding: 2rem 1rem;
  font-size: 0.85rem;
}

/* Grid */

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.date-heading {
  margin: 1.5rem 0 0.5rem;
  font-size: 1.1rem;
  font-weight: 600;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.4rem;
}

.date-heading:first-child {
  margin-top: 1rem;
}

.grid-item {
  display: block;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  border-radius: 6px;
  background: var(--border);
}

.grid-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* Pagination */

.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  margin-top: 2rem;
  color: var(--muted);
}

/* Lightbox */

.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  z-index: 1000;
}

.lightbox[hidden] {
  display: none;
}

.lightbox-image {
  max-width: 90vw;
  max-height: 85vh;
  object-fit: contain;
}

.lightbox-caption {
  color: #fff;
  margin-top: 0.75rem;
  text-align: center;
}

.lightbox-close,
.lightbox-prev,
.lightbox-next {
  position: absolute;
  background: none;
  border: none;
  color: #fff;
  font-size: 2.5rem;
  cursor: pointer;
  line-height: 1;
  padding: 0.5rem;
}

.lightbox-close {
  top: 1rem;
  right: 1.5rem;
}

.lightbox-prev {
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
}

.lightbox-next {
  right: 1rem;
  top: 50%;
  transform: translateY(-50%);
}

/* Photo detail page */

.photo-page {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.photo-nav {
  display: flex;
  justify-content: space-between;
  width: 100%;
  max-width: 900px;
  margin-bottom: 1rem;
}

.photo-full {
  max-width: 100%;
  max-height: 80vh;
  border-radius: 6px;
}

.caption {
  margin-top: 1rem;
  font-size: 1.1rem;
}

.muted {
  color: var(--muted);
  font-size: 0.9rem;
}

/* Forms */

.form {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  max-width: 400px;
  margin-top: 1rem;
}

.form label {
  font-weight: 600;
  font-size: 0.9rem;
}

.form input,
.form select {
  padding: 0.5rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--bg);
  color: var(--fg);
  font-size: 1rem;
}

button {
  padding: 0.6rem 1.2rem;
  border: none;
  border-radius: 4px;
  background: var(--accent);
  color: #fff;
  font-size: 1rem;
  cursor: pointer;
}

button:hover {
  opacity: 0.9;
}

button.danger {
  background: var(--danger);
}

.button {
  display: inline-block;
  padding: 0.6rem 1.2rem;
  border-radius: 4px;
  background: var(--accent);
  color: #fff;
}

.button:hover {
  text-decoration: none;
  opacity: 0.9;
}

.error {
  color: var(--danger);
}

.flash {
  background: #dcfce7;
  color: #166534;
  padding: 0.5rem 1rem;
  border-radius: 4px;
  display: inline-block;
}

/* Admin dashboard */

.admin-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}

.admin-item img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: 6px;
}

.admin-item-meta {
  margin-top: 0.25rem;
}

.admin-item-meta .filename {
  font-size: 0.85rem;
  word-break: break-all;
  margin: 0.25rem 0;
}

.admin-item-meta form {
  margin: 0.25rem 0 0;
}

.admin-item-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.25rem;
}

.admin-item-actions form {
  margin: 0;
}

.button-small {
  display: inline-block;
  padding: 0.3rem 0.7rem;
  border-radius: 4px;
  background: var(--accent);
  color: #fff;
  font-size: 0.85rem;
}

.button-small:hover {
  text-decoration: none;
  opacity: 0.9;
}

/* Tags */

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 0.85rem;
  color: var(--fg);
}

.tag:hover {
  text-decoration: none;
  border-color: var(--accent);
  color: var(--accent);
}

.tag-count {
  color: var(--muted);
  font-size: 0.8rem;
}

/* Edit page */

.edit-preview {
  border-radius: 6px;
  margin-top: 1rem;
  object-fit: cover;
}

/* Upload page */

.upload-defaults {
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1rem;
  margin-bottom: 1.5rem;
}

.upload-defaults h2 {
  margin: 0 0 0.5rem;
  font-size: 1rem;
}

.upload-defaults .form {
  margin-top: 0;
}

.dropzone {
  border: 2px dashed var(--border);
  border-radius: 6px;
  padding: 2rem;
  text-align: center;
  color: var(--muted);
  cursor: pointer;
  margin-bottom: 1.5rem;
}

.dropzone.dragover {
  border-color: var(--accent);
  color: var(--accent);
}

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

.upload-card {
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
}

.upload-card-preview {
  position: relative;
  aspect-ratio: 1 / 1;
  background: var(--border);
}

.upload-card-preview img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.upload-card-progress {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.35);
}

.upload-card[data-state="done"] .upload-card-progress,
.upload-card[data-state="error"] .upload-card-progress {
  display: none;
}

.spinner {
  width: 28px;
  height: 28px;
  border: 3px solid rgba(255, 255, 255, 0.4);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.upload-card-body {
  padding: 0.75rem;
}

.upload-card-body .filename {
  font-size: 0.85rem;
  word-break: break-all;
  margin: 0 0 0.5rem;
}

.upload-card-form {
  max-width: none;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.upload-card-form label {
  font-size: 0.8rem;
}

.upload-card-status {
  margin: 0;
  min-height: 1.2em;
}

.upload-card-status.error {
  color: var(--danger);
}

.upload-card-error {
  margin-top: 0.5rem;
}

.upload-card-error .error {
  font-size: 0.85rem;
}

.upload-card[data-state="error"] .upload-card-preview {
  opacity: 0.5;
}