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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: #1a1a1a;
  background: #f5f5f5;
  line-height: 1.5;
}

a { color: #2171b5; text-decoration: none; }
a:hover { text-decoration: underline; }

/* === Password Gate === */
html.gated header,
html.gated main,
html.gated #loading-overlay { display: none !important; }
#password-gate {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #fff;
}

.gate-box {
  text-align: center;
  max-width: 320px;
  padding: 2rem;
}
.gate-box h2 { font-size: 1.3rem; margin-bottom: 0.5rem; }
.gate-box p { color: #555; font-size: 0.9rem; margin-bottom: 1rem; }
.gate-box input {
  width: 100%;
  padding: 0.5rem 0.75rem;
  border: 1px solid #ccc;
  border-radius: 4px;
  font-size: 1rem;
  margin-bottom: 0.75rem;
}
.gate-box input:focus {
  outline: none;
  border-color: #2171b5;
  box-shadow: 0 0 0 2px rgba(33, 113, 181, 0.2);
}
.gate-box button {
  width: 100%;
  padding: 0.5rem;
  background: #2171b5;
  color: #fff;
  border: none;
  border-radius: 4px;
  font-size: 0.95rem;
  cursor: pointer;
}
.gate-box button:hover { background: #1a5a8e; }
#gate-error { color: #cb181d; font-size: 0.85rem; margin-top: 0.5rem; }

/* === Loading Overlay === */
#loading-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #fff;
  transition: opacity 0.3s;
}
#loading-overlay.hidden { opacity: 0; pointer-events: none; }

.loader { text-align: center; }

.spinner {
  width: 40px;
  height: 40px;
  margin: 0 auto 1rem;
  border: 4px solid #e0e0e0;
  border-top-color: #2171b5;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

#loading-text { color: #666; font-size: 0.95rem; }

/* === Header === */
header {
  background: #fff;
  border-bottom: 1px solid #ddd;
  padding: 1rem 1.5rem;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
}
header h1 { font-size: 1.5rem; font-weight: 700; }
header h1 a { color: inherit; }
header h1 a:hover { text-decoration: none; }
.subtitle { color: #555; font-size: 0.9rem; }
header nav { font-size: 0.9rem; }
header nav a { margin-left: 1rem; }

/* === Main Layout === */
main {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 0;
  max-width: 1400px;
  margin: 0 auto;
  min-height: calc(100vh - 80px);
}

/* === Filters Sidebar === */
#filters {
  background: #fff;
  border-right: 1px solid #ddd;
  padding: 1rem;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}

#filter-toggle { display: none; }

.filter-group {
  margin-bottom: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid #eee;
}
.filter-group:last-of-type { border-bottom: none; }

.filter-group > label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: #555;
  margin-bottom: 0.4rem;
}

.filter-group select,
.filter-group input[type="search"],
.filter-group input[type="text"] {
  width: 100%;
  padding: 0.45rem 0.6rem;
  border: 1px solid #ccc;
  border-radius: 4px;
  font-size: 0.9rem;
  background: #fff;
}
.filter-group select:focus,
.filter-group input:focus {
  outline: none;
  border-color: #2171b5;
  box-shadow: 0 0 0 2px rgba(33, 113, 181, 0.2);
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  font-size: 0.9rem;
}
.checkbox-label input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: #2171b5;
}

.filter-count { color: #888; font-size: 0.85rem; }

/* Tag Dropdown */
.tag-dropdown { position: relative; }

.selected-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  margin-top: 0.4rem;
}

.selected-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  background: #e8e8e8;
  border-radius: 3px;
  padding: 0.2rem 0.4rem;
  font-size: 0.85rem;
}
.selected-tag button {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1rem;
  line-height: 1;
  color: #666;
  padding: 0 0.15rem;
}
.selected-tag button:hover { color: #c00; }

.tag-list {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  max-height: 300px;
  overflow-y: auto;
  background: #fff;
  border: 1px solid #ccc;
  border-top: none;
  border-radius: 0 0 4px 4px;
  z-index: 10;
}

.tag-item {
  padding: 0.35rem 0.6rem;
  cursor: pointer;
  font-size: 0.85rem;
  display: flex;
  justify-content: space-between;
}
.tag-item:hover { background: #f0f4f8; }
.tag-item .tag-count { color: #888; }
.tag-item.disabled { color: #bbb; cursor: default; }

.clear-btn {
  width: 100%;
  padding: 0.5rem;
  background: none;
  border: 1px solid #ccc;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.85rem;
  color: #555;
  margin-top: 0.5rem;
}
.clear-btn:hover { background: #f0f0f0; }
.dev-btn { color: #999; font-size: 0.75rem; border-style: dashed; }

/* === Results Area === */
#results { padding: 1rem 1.5rem; }

#results-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}

#results-count { font-size: 0.95rem; color: #555; }

#sort-wrapper {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
}
#sort-wrapper label { color: #555; }
#sort-wrapper select {
  padding: 0.3rem 0.5rem;
  border: 1px solid #ccc;
  border-radius: 4px;
  font-size: 0.85rem;
}

/* === Comment Cards === */
.comment-card {
  background: #fff;
  border: 1px solid #ddd;
  border-radius: 6px;
  padding: 1rem 1.25rem;
  margin-bottom: 0.75rem;
  box-shadow: 0 1px 3px rgba(0,0,0,0.04);
}

.card-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}
.card-header .share-btn {
  margin-left: auto;
  flex-shrink: 0;
}

/* Perspective Badges */
.perspective-badge {
  display: inline-block;
  padding: 0.15rem 0.55rem;
  border-radius: 3px;
  font-size: 0.75rem;
  font-weight: 600;
  color: #fff;
  white-space: nowrap;
}
.perspective-pro-vaccine { background: #2171b5; }
.perspective-nuanced-mostly-pro { background: #41ab5d; }
.perspective-uncertain { background: #969696; }
.perspective-vaccine-hesitant { background: #e6850e; }
.perspective-anti-vaccine { background: #cb181d; }

/* Vaccine Injured Badge */
.injured-badge {
  display: inline-block;
  padding: 0.15rem 0.55rem;
  border-radius: 3px;
  font-size: 0.75rem;
  font-weight: 600;
  color: #fff;
  background: #8e24aa;
  white-space: nowrap;
}

/* Duplicate Badge */
.duplicate-badge {
  display: inline-block;
  padding: 0.15rem 0.55rem;
  border-radius: 3px;
  font-size: 0.75rem;
  font-weight: 600;
  color: #fff;
  background: #757575;
  white-space: nowrap;
}

/* Card Meta */
.card-meta {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  flex-wrap: wrap;
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
}
.card-meta .org { color: #555; }
.card-meta time { color: #888; font-size: 0.85rem; margin-left: auto; }

/* Card Comment */
.card-comment {
  font-size: 0.9rem;
  line-height: 1.6;
  overflow-wrap: break-word;
}

/* Card Tags */
.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  margin-top: 0.6rem;
}
.tag {
  display: inline-block;
  background: #eef2f7;
  color: #3a5a7c;
  padding: 0.1rem 0.45rem;
  border-radius: 3px;
  font-size: 0.75rem;
}

/* Card Footer */
.card-footer {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-top: 0.6rem;
  padding-top: 0.5rem;
  border-top: 1px solid #eee;
  font-size: 0.85rem;
}
.card-footer a { font-size: 0.85rem; }
.share-btn {
  background: #f0f4f8;
  border: none;
  border-radius: 4px;
  padding: 0.45rem 1rem;
  font-size: 0.8rem;
  cursor: pointer;
  color: #2171b5;
  font-weight: 500;
  margin-left: auto;
  transition: background 0.2s, color 0.2s;
}
.share-btn:hover { background: #dce8f2; }
.share-btn.copied {
  background: #41ab5d;
  color: #fff;
}

.reg-link { margin-left: auto; }

/* Highlighted single comment view */
.comment-card.highlighted {
  border-color: #2171b5;
  box-shadow: 0 2px 8px rgba(33, 113, 181, 0.15);
}

.back-to-all {
  display: inline-block;
  margin-bottom: 1rem;
  padding: 0.5rem 1rem;
  background: #fff;
  border: 1px solid #ccc;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.9rem;
  color: #2171b5;
}
.back-to-all:hover { background: #f0f4f8; }

/* === Pagination === */
#pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.25rem;
  margin-top: 1.5rem;
  flex-wrap: wrap;
}

.page-btn {
  min-width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid #ccc;
  border-radius: 4px;
  background: #fff;
  cursor: pointer;
  font-size: 0.85rem;
  color: #333;
  padding: 0 0.5rem;
}
.page-btn:hover { background: #f0f4f8; }
.page-btn.active {
  background: #2171b5;
  color: #fff;
  border-color: #2171b5;
}
.page-btn:disabled {
  opacity: 0.4;
  cursor: default;
}
.page-ellipsis {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  font-size: 0.85rem;
  color: #888;
}

/* === Mobile === */
@media (max-width: 767px) {
  main {
    grid-template-columns: 1fr;
  }

  #filters {
    position: relative;
    height: auto;
    border-right: none;
    border-bottom: 1px solid #ddd;
    padding: 0;
  }

  #filter-toggle {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    width: 100%;
    padding: 0.75rem 1rem;
    background: #fff;
    border: none;
    border-bottom: 1px solid #eee;
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 600;
  }

  #active-filter-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: #2171b5;
    color: #fff;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    font-size: 0.75rem;
    font-weight: 700;
  }

  #filter-panel {
    display: none;
    padding: 1rem;
  }
  #filter-panel.open { display: block; }

  #results { padding: 1rem; }

  .card-meta time { margin-left: 0; }
  .reg-link { margin-left: 0; }
}

/* === Focus & Accessibility === */
:focus-visible {
  outline: 2px solid #2171b5;
  outline-offset: 2px;
}

/* === About Page === */
.about-page {
  display: block;
  max-width: 760px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}
.about-content h2 {
  font-size: 1.3rem;
  margin-top: 2rem;
  margin-bottom: 0.5rem;
}
.about-content h3 {
  font-size: 1.05rem;
  margin-top: 1.5rem;
  margin-bottom: 0.4rem;
}
.about-content p { margin-bottom: 0.8rem; }
.about-content ul { margin: 0.5rem 0 1rem 1.5rem; }
.about-content li { margin-bottom: 0.3rem; }

.about-table {
  width: 100%;
  border-collapse: collapse;
  margin: 0.75rem 0 1rem;
}
.about-table th, .about-table td {
  text-align: left;
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid #e0e0e0;
}
.about-table th { font-size: 0.85rem; color: #555; }
.about-table td { font-size: 0.9rem; vertical-align: middle; }

/* Screen reader only */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
}