:root {
  --bg: #0e0f12;
  --surface: #17191d;
  --surface-raised: #1e2126;
  --border: #2b2e34;
  --text: #e4e6ea;
  --muted: #8b8f98;
  --accent: #74b876;
  --accent-hover: #91cd8f;
  --accent-text: #0e1a0c;
  --green: #6fbf86;
  --amber: #cfa855;
  --red: #d97b73;
  --placeholder-bg: #1e2126;
  --image-bg: #17191d;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 24px 20px 60px;
}
.container-wide {
  max-width: 1240px;
}

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.site-header .brand {
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--accent);
  text-decoration: none;
}

.site-header nav {
  display: flex;
  align-items: center;
  gap: 16px;
}

.site-header nav a { color: var(--text); text-decoration: none; }
.site-header nav a:hover { color: var(--accent); }

h1 { margin-top: 0; }
.subtitle { color: var(--muted); margin-top: -8px; }
.muted { color: var(--muted); }

.back-link {
  display: inline-block;
  margin-bottom: 16px;
  color: var(--muted);
  text-decoration: none;
}
.back-link:hover { color: var(--accent); }

.flash {
  background: rgba(124, 201, 138, 0.12);
  border: 1px solid var(--green);
  color: var(--green);
  padding: 10px 14px;
  border-radius: 6px;
  margin-bottom: 16px;
}
.flash-error {
  background: rgba(227, 124, 106, 0.12);
  border-color: var(--red);
  color: var(--red);
}

.filter-bar { margin-bottom: 20px; display: flex; gap: 12px; flex-wrap: wrap; }
.filter-bar a {
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  text-decoration: none;
  color: var(--text);
  font-size: 0.9rem;
}
.filter-bar a.active { background: var(--accent); color: var(--accent-text); border-color: var(--accent); font-weight: 600; }

.filter-bar-secondary { margin-top: -10px; }
.filter-bar-secondary a { padding: 4px 12px; font-size: 0.8rem; color: var(--muted); }
.filter-bar-secondary a.active { color: var(--accent-text); }

.search-form {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
  max-width: 360px;
}
.search-form input {
  flex: 1;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 1rem;
  background: var(--surface-raised);
  color: var(--text);
}

.search-wrap { position: relative; max-width: 360px; }
.search-suggestions {
  position: absolute;
  top: 100%;
  left: 0;
  right: 44px;
  z-index: 10;
  background: var(--surface-raised);
  border: 1px solid var(--border);
  border-radius: 6px;
  margin-top: 2px;
  max-height: 260px;
  overflow-y: auto;
  box-shadow: 0 4px 16px rgba(0,0,0,0.4);
}
.search-suggestions a {
  display: block;
  padding: 8px 10px;
  color: var(--text);
  text-decoration: none;
  font-size: 0.9rem;
  border-bottom: 1px solid var(--border);
}
.search-suggestions a:last-child { border-bottom: none; }
.search-suggestions a:hover { background: var(--surface); color: var(--accent); }

.item-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 18px;
}
@media (max-width: 700px) {
  .item-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
}
@media (max-width: 340px) {
  .item-grid { grid-template-columns: 1fr; }
}

.item-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  text-decoration: none;
  color: var(--text);
  display: flex;
  flex-direction: column;
  transition: box-shadow 0.15s ease, transform 0.15s ease;
}
.item-card:hover { box-shadow: 0 4px 16px rgba(0,0,0,0.4); transform: translateY(-2px); border-color: var(--accent); }

.item-cover {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  background: var(--image-bg);
}
.item-cover-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  background: var(--placeholder-bg);
}

.cover-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 3 / 4;
  background: var(--image-bg);
  overflow: hidden;
}
.cover-wrap-large { border-radius: 10px; }
.cover-wrap img.item-cover,
.cover-wrap img.item-cover-large {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 0.25s ease;
}
.cover-wrap img.loaded { opacity: 1; }

.cover-spinner {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}
.cover-spinner::after {
  content: "";
  width: 24px;
  height: 24px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: cover-spin 0.8s linear infinite;
}
@keyframes cover-spin {
  to { transform: rotate(360deg); }
}

.load-more-spinner {
  justify-content: center;
  padding: 24px 0;
}
.load-more-spinner:not([hidden]) {
  display: flex;
}
.load-more-spinner .cover-spinner::after {
  width: 28px;
  height: 28px;
}

.item-card-body { padding: 12px; }
.item-card-body h3 { margin: 0; font-size: 1rem; }
.item-card-author { margin: 2px 0 8px; font-size: 0.82rem; color: var(--muted); }

.badge {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 999px;
}
.badge-available { background: rgba(124, 201, 138, 0.15); color: var(--green); }
.badge-requested { background: rgba(227, 188, 94, 0.15); color: var(--amber); }
.badge-rented { background: rgba(227, 124, 106, 0.15); color: var(--red); }

.item-detail {
  display: grid;
  grid-template-columns: 460px 1fr;
  gap: 48px;
  margin-bottom: 32px;
}
@media (max-width: 800px) {
  .item-detail {
    grid-template-columns: 1fr;
  }
  .item-detail .cover-wrap-large,
  .item-detail > .item-cover-large {
    max-width: 200px;
  }
}
.item-cover-large {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  border-radius: 10px;
  background: var(--image-bg);
}
.item-author { color: var(--muted); margin: 0 0 4px; }
.item-type { color: var(--muted); margin-top: 0; }
.item-external-link { margin: 4px 0; }
.item-external-link a { color: var(--accent); font-size: 0.9rem; text-decoration: none; }
.item-external-link a:hover { text-decoration: underline; }
.item-notes { white-space: pre-wrap; }

.request-form {
  margin-top: 18px;
  display: flex;
  gap: 10px;
  align-items: flex-end;
}
.request-form label { display: none; }
.request-form input {
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 1rem;
  background: var(--surface-raised);
  color: var(--text);
}

button, .button {
  background: var(--accent);
  color: var(--accent-text);
  border: none;
  padding: 8px 16px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  display: inline-block;
}
button:hover, .button:hover { background: var(--accent-hover); }
button:disabled { background: var(--border); color: var(--muted); cursor: not-allowed; }
.button-small { padding: 5px 12px; font-size: 0.82rem; }

.link-button {
  background: none;
  border: none;
  color: var(--muted);
  padding: 0;
  text-decoration: underline;
  cursor: pointer;
  font-size: 0.9rem;
}

.inline-form { display: inline-flex; gap: 6px; align-items: center; margin: 0; flex-wrap: wrap; }

.checkbox-label {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.8rem;
  color: var(--muted);
  white-space: nowrap;
}

.btn-approve { background: var(--green); color: #14201a; }
.btn-approve:hover { background: #93d59f; }
.btn-reject { background: var(--red); color: #200f0c; }
.btn-reject:hover { background: #e99688; }

table.history-table, table.admin-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 12px;
  background: var(--surface);
}
table.history-table th, table.history-table td,
table.admin-table th, table.admin-table td {
  text-align: left;
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
}

.admin-cover-cell { width: 44px; padding: 6px 10px !important; }
.admin-cover-thumb {
  width: 34px;
  height: 46px;
  object-fit: cover;
  border-radius: 4px;
  background: var(--image-bg);
  display: block;
}
.admin-cover-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  background: var(--placeholder-bg);
}
table.admin-table tr.row-overdue { background: rgba(227, 124, 106, 0.1); }

section { margin-bottom: 36px; }
.section-header { display: flex; justify-content: space-between; align-items: center; }

.admin-form {
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-width: 420px;
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 20px;
  border-radius: 10px;
}
.admin-form label { font-size: 0.85rem; color: var(--muted); margin-top: 8px; }
.admin-form input, .admin-form select, .admin-form textarea {
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 1rem;
  font-family: inherit;
  background: var(--surface-raised);
  color: var(--text);
}
.admin-form button { margin-top: 14px; align-self: flex-start; }