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

:root {
  --bg: #f4f6f9;
  --surface: #ffffff;
  --primary: #1e3a5f;
  --primary-light: #2d5a8e;
  --primary-lighter: #e8edf5;
  --text: #1e293b;
  --text-muted: #64748b;
  --border: #dde3ed;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-hover: 0 4px 12px rgba(0, 0, 0, 0.1);
  --transition: 0.2s ease;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container { max-width: 960px; margin: 0 auto; padding: 0 20px; width: 100%; }

header {
  background: linear-gradient(135deg, #1a365d, #2d5a8e);
  color: #fff;
  padding: 40px 0 32px;
}
header h1 { font-size: 1.65rem; font-weight: 700; letter-spacing: -0.02em; }
header .subtitle { font-size: 0.95rem; opacity: 0.85; margin-top: 6px; max-width: 600px; }

/* Controls */
.controls { margin: 20px 0 12px; }

.top-bar {
  display: flex;
  gap: 8px;
  align-items: center;
}
.search-box { flex: 1; }
.search-box input {
  width: 100%;
  padding: 10px 14px;
  border: 2px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.95rem;
  outline: none;
  background: var(--surface);
  transition: border var(--transition);
}
.search-box input:focus { border-color: var(--primary-light); }

.btn-clear-all {
  padding: 8px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  cursor: pointer;
  font-size: 0.82rem;
  color: var(--text-muted);
  white-space: nowrap;
  transition: all var(--transition);
}
.btn-clear-all:hover { border-color: #dc2626; color: #dc2626; }

/* Filter Bar */
.filter-bar {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 14px;
}
.filter-row {
  display: flex;
  align-items: flex-start;
  gap: 8px;
}
.filter-label {
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
  min-width: 56px;
  padding-top: 6px;
  flex-shrink: 0;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 12px;
  border: 1.5px solid var(--border);
  border-radius: 16px;
  background: var(--surface);
  cursor: pointer;
  font-size: 0.82rem;
  font-weight: 500;
  transition: all var(--transition);
  color: var(--text);
  white-space: nowrap;
}
.chip:hover { border-color: var(--primary-light); color: var(--primary-light); }
.chip.active { background: var(--primary); color: #fff; border-color: var(--primary); }
.chip.active:hover { background: var(--primary-light); color: #fff; border-color: var(--primary-light); }
.chip-count { font-size: 0.7rem; opacity: 0.7; }
.chip.active .chip-count { opacity: 0.85; }

.tag-chip.active { background: var(--chip-color, var(--primary)); border-color: var(--chip-color, var(--primary)); }
.tag-chip.active:hover { filter: brightness(1.15); }

.month-row { display: flex; flex-wrap: wrap; gap: 4px; }

.month-chips { display: flex; flex-wrap: wrap; gap: 4px; }

.no-data { font-size: 0.82rem; color: var(--text-muted); padding: 4px 0; }

/* Active filters */
.active-filters { margin-top: 10px; display: flex; flex-wrap: wrap; gap: 6px; min-height: 24px; }
.filter-chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: 12px;
  background: var(--primary-lighter);
  color: var(--primary);
  font-size: 0.78rem;
  font-weight: 500;
}

.results-info { font-size: 0.85rem; color: var(--text-muted); margin: 8px 0 16px; }

/* Document Cards */
.documents-list { display: flex; flex-direction: column; gap: 10px; }
.doc-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 22px;
  cursor: pointer;
  transition: all var(--transition);
  box-shadow: var(--shadow);
}
.doc-card:hover {
  border-color: var(--primary-light);
  box-shadow: var(--shadow-hover);
  transform: translateY(-1px);
}
.doc-tags { display: flex; flex-wrap: wrap; gap: 5px; margin-bottom: 6px; }
.mini-tag {
  display: inline-block;
  padding: 2px 9px;
  border-radius: 10px;
  font-size: 0.72rem;
  font-weight: 600;
  border: 1px solid;
}
.doc-title { font-size: 1.1rem; font-weight: 600; color: var(--primary); margin-bottom: 5px; }
.doc-summary { font-size: 0.88rem; color: var(--text-muted); line-height: 1.5; }
.doc-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 8px;
  font-size: 0.8rem;
  color: var(--text-muted);
}
.doc-publisher { font-weight: 600; color: var(--text); }
.doc-url-indicator { color: var(--primary-light); font-weight: 500; }
.file-badge {
  background: var(--bg);
  padding: 2px 7px;
  border-radius: 4px;
  font-weight: 600;
  font-size: 0.72rem;
  letter-spacing: 0.5px;
}

/* Pagination */
.pagination {
  display: flex;
  justify-content: center;
  gap: 4px;
  margin: 28px 0;
}
.pagination button {
  padding: 7px 13px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  cursor: pointer;
  font-size: 0.85rem;
  transition: all var(--transition);
}
.pagination button:hover { border-color: var(--primary-light); color: var(--primary-light); }
.pagination button.active { background: var(--primary); color: #fff; border-color: var(--primary); }

/* Modal */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  z-index: 1000;
  justify-content: center;
  align-items: flex-start;
  padding: 40px 20px;
  overflow-y: auto;
}
.modal-overlay.open { display: flex; }
.modal {
  background: var(--surface);
  border-radius: 12px;
  max-width: 760px;
  width: 100%;
  padding: 32px;
  position: relative;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
  margin-top: 20px;
  animation: modalIn 0.25s ease;
}
@keyframes modalIn { from { opacity: 0; transform: translateY(15px); } to { opacity: 1; transform: translateY(0); } }
.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-muted);
  width: 32px; height: 32px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
  transition: background var(--transition);
}
.modal-close:hover { background: var(--bg); }
.modal h2 { font-size: 1.35rem; color: var(--primary); margin: 10px 0 14px; line-height: 1.3; }
.modal-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.modal-meta { display: flex; flex-direction: column; gap: 5px; font-size: 0.9rem; margin-bottom: 14px; }
.modal-meta a { color: var(--primary-light); }
.modal-summary { margin-top: 14px; padding-top: 14px; border-top: 1px solid var(--border); }
.modal-summary p { font-size: 0.92rem; line-height: 1.6; color: var(--text); }
.modal-source { margin-top: 18px; padding-top: 14px; border-top: 1px solid var(--border); }
.modal-source h3 { font-size: 0.9rem; font-weight: 600; margin-bottom: 6px; }
.original-link { word-break: break-all; color: var(--primary-light); font-weight: 500; font-size: 0.88rem; }
.modal-fallback { margin-top: 12px; }
.modal-fallback summary {
  cursor: pointer;
  font-size: 0.85rem;
  color: var(--primary-light);
  font-weight: 500;
  padding: 6px 0;
}
.modal-fallback summary:hover { text-decoration: underline; }
.fallback-content { margin-top: 8px; padding: 12px; background: var(--bg); border-radius: var(--radius); }
.fallback-content p { font-size: 0.82rem; color: var(--text-muted); margin-bottom: 10px; }
.download-btn {
  display: inline-block;
  padding: 9px 20px;
  background: var(--primary);
  color: #fff;
  text-decoration: none;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.85rem;
  transition: background var(--transition);
}
.download-btn:hover { background: var(--primary-light); }
.modal-download { margin-top: 16px; }

/* States */
.loading, .empty-state {
  text-align: center;
  padding: 48px 20px;
  color: var(--text-muted);
  font-size: 0.95rem;
}
.empty-state.error { color: #dc2626; }

footer {
  margin-top: auto;
  padding: 24px 0;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
  border-top: 1px solid var(--border);
}

.disclaimer {
  margin-top: 16px;
  padding: 16px;
  background: #fef3c7;
  border: 1px solid #fcd34d;
  border-radius: var(--radius);
  text-align: left;
  font-size: 0.8rem;
  color: #92400e;
  line-height: 1.5;
}

.disclaimer p {
  margin: 0;
}

.disclaimer strong {
  display: block;
  margin-bottom: 6px;
  font-size: 0.85rem;
}

@media (max-width: 640px) {
  header { padding: 28px 0 24px; }
  header h1 { font-size: 1.25rem; }
  .doc-card { padding: 14px; }
  .modal { padding: 20px; }
  .filter-row { flex-wrap: wrap; }
  .filter-label { min-width: auto; padding-top: 4px; }
}