:root {
  color-scheme: light;
  --bg: #f8fafc;
  --card-bg: #ffffff;
  --text: #0f172a;
  --muted: #475569;
  --accent: #0f766e;
  --border: #cbd5e1;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.page-header,
.content {
  width: min(100%, 980px);
  margin: 0 auto;
  padding: 1rem;
}

.page-header h1 {
  margin-bottom: 0.25rem;
}

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

.toolbar {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.75rem 1rem;
  margin-bottom: 1rem;
}

.toolbar-field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.toolbar input,
.toolbar select {
  padding: 0.4rem;
  border: 1px solid var(--border);
  border-radius: 0.4rem;
  background: #fff;
}

.toolbar input:focus,
.toolbar select:focus {
  outline: 2px solid #14b8a6;
  outline-offset: 1px;
}

.result-summary {
  margin: 0 0 0.75rem 0;
  color: var(--muted);
}

.filters {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.filter-group {
  margin: 0;
  padding: 0.65rem;
  border: 1px solid var(--border);
  border-radius: 0.45rem;
  background: #fff;
}

.filter-group legend {
  padding: 0 0.2rem;
  font-weight: 600;
}

.filter-options {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  max-height: 9rem;
  overflow: auto;
}

.filter-option {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  color: #334155;
  font-size: 0.95rem;
}

.filter-empty {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.active-filters {
  margin: 0 0 0.75rem;
}

.active-filters__title {
  margin: 0 0 0.35rem;
  color: var(--muted);
}

.active-filter-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.active-filter-chip {
  border: 1px solid #99f6e4;
  background: #ccfbf1;
  color: #115e59;
  border-radius: 999px;
  padding: 0.15rem 0.55rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  cursor: pointer;
}

.active-filter-chip:hover {
  background: #99f6e4;
}

.status-message {
  padding: 0.75rem;
  border: 1px solid var(--border);
  border-radius: 0.4rem;
  background: #fff;
  color: var(--muted);
}

.presentation-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 1rem;
}

.presentation-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 0.6rem;
  padding: 1rem;
}

.presentation-card h2 {
  margin-top: 0;
  margin-bottom: 0.5rem;
  font-size: 1.2rem;
}

.presentation-card p {
  margin: 0.35rem 0;
}

.presentation-meta {
  margin: 0.5rem 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.75rem;
}

.presentation-actions {
  margin-top: 0.85rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.tag {
  display: inline-block;
  padding: 0.2rem 0.5rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  font-size: 0.85rem;
  color: #334155;
  background: #f1f5f9;
}

.view-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.45rem 0.75rem;
  border-radius: 0.45rem;
  border: 1px solid #0f766e;
  background: #0f766e;
  color: #ecfeff;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
}

.view-action:hover {
  background: #0d5f59;
  border-color: #0d5f59;
}

.view-action--disabled {
  border-color: #94a3b8;
  background: #cbd5e1;
  color: #334155;
  cursor: not-allowed;
}

.download-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.45rem 0.75rem;
  border-radius: 0.45rem;
  border: 1px solid #0f172a;
  background: #ffffff;
  color: #0f172a;
  font-weight: 600;
  cursor: pointer;
}

.download-action:hover:not(:disabled) {
  background: #e2e8f0;
}

.download-action:disabled,
.download-action--disabled {
  border-color: #94a3b8;
  background: #cbd5e1;
  color: #334155;
  cursor: not-allowed;
}

.viewer-link {
  color: var(--accent);
  font-weight: 600;
  text-decoration: none;
}

.viewer-link:hover {
  text-decoration: underline;
}

.viewer-error {
  margin-top: 0.6rem;
  margin-bottom: 0;
  color: #b91c1c;
  font-size: 0.92rem;
}

.search-highlight {
  background: #fef08a;
  padding: 0 0.15rem;
  border-radius: 0.15rem;
}

@media (max-width: 720px) {
  .toolbar {
    grid-template-columns: 1fr;
  }

  .toolbar-field--sort {
    max-width: 260px;
  }

  .filters {
    grid-template-columns: 1fr;
  }
}