/* ===== Base ===== */
body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  -webkit-font-smoothing: antialiased;
}

/* ===== Buttons ===== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.55rem 1.2rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: #fff;
  background: #2563eb;
  border-radius: 0.5rem;
  transition: background 0.15s;
}
.btn-primary:hover { background: #1d4ed8; }

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.55rem 1.2rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: #374151;
  background: #fff;
  border: 1px solid #d1d5db;
  border-radius: 0.5rem;
  transition: all 0.15s;
}
.btn-secondary:hover { border-color: #2563eb; color: #2563eb; }

/* ===== Bench Tabs ===== */
.bench-tab {
  padding: 0.35rem 0.9rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: #6b7280;
  border-radius: 9999px;
  border: 1px solid transparent;
  transition: all 0.15s;
  cursor: pointer;
  background: transparent;
}
.bench-tab:hover { color: #111827; }
.bench-tab.active {
  color: #2563eb;
  background: #eff6ff;
  border-color: #bfdbfe;
}

.bench-content { display: none; }
.bench-content.active { display: block; }

/* ===== Section Titles ===== */
.section-title {
  font-size: 1.75rem;
  font-weight: 800;
  text-align: center;
  color: #111827;
}
.section-subtitle {
  margin-top: 0.5rem;
  text-align: center;
  color: #6b7280;
  max-width: 40rem;
  margin-left: auto;
  margin-right: auto;
}

/* ===== Pipeline ===== */
/* Pipeline layout uses Tailwind classes inline */

/* ===== Data Tables ===== */
.data-table {
  border-collapse: collapse;
  font-size: 0.875rem;
}
.data-table thead th {
  padding: 0.6rem 0.75rem;
  font-weight: 600;
  font-size: 0.8rem;
  color: #6b7280;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  border-bottom: 2px solid #e5e7eb;
  text-align: center;
  white-space: nowrap;
  user-select: none;
}
.data-table thead th.text-left { text-align: left; }

.data-table tbody td {
  padding: 0.55rem 0.75rem;
  border-bottom: 1px solid #f3f4f6;
  text-align: center;
  white-space: nowrap;
}
.data-table tbody td:first-child {
  text-align: center;
  color: #9ca3af;
  font-size: 0.8rem;
  width: 2rem;
}
.data-table tbody td:nth-child(2) { text-align: left; font-weight: 500; }

.data-table tbody tr:hover { background: #f9fafb; }

.data-table tbody tr:nth-child(1) td:nth-child(2) { color: #b45309; }
.data-table tbody tr:nth-child(2) td:nth-child(2) { color: #6b7280; }
.data-table tbody tr:nth-child(3) td:nth-child(2) { color: #92400e; }

.sortable-col { cursor: pointer; }
.sortable-col:hover { color: #2563eb; }
.sort-indicator {
  font-size: 0.65rem;
  vertical-align: middle;
  opacity: 0.5;
}

/* ===== Charts ===== */
.chart-container {
  position: relative;
  max-width: 400px;
  margin: 0 auto;
}
.chart-container-wide {
  position: relative;
  max-width: 100%;
  height: 380px;
}

/* ===== Finding Cards ===== */
.finding-card {
  background: #fff;
  border: 1px solid #e5e7eb;
  border-radius: 0.75rem;
  padding: 1.5rem;
  position: relative;
}
.finding-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 50%;
  font-size: 0.8rem;
  font-weight: 700;
  background: #eff6ff;
  color: #2563eb;
  margin-bottom: 0.5rem;
}

/* ===== Accordion ===== */
.accordion {
  border: 1px solid #e5e7eb;
  border-radius: 0.75rem;
  overflow: hidden;
  background: #fff;
}
.accordion-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 1rem 1.25rem;
  font-weight: 600;
  font-size: 0.95rem;
  background: transparent;
  cursor: pointer;
  text-align: left;
  border: none;
  transition: background 0.15s;
}
.accordion-header:hover { background: #f9fafb; }

.accordion-chevron {
  transition: transform 0.2s;
  flex-shrink: 0;
  color: #9ca3af;
}
.accordion.open .accordion-chevron { transform: rotate(180deg); }

.accordion-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  padding: 0 1.25rem;
}
.accordion.open .accordion-body {
  max-height: 600px;
  padding: 0 1.25rem 1.25rem;
}

/* ===== Difficulty Badges ===== */
.difficulty-badge {
  display: inline-block;
  padding: 0.15rem 0.55rem;
  border-radius: 9999px;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-right: 0.4rem;
  vertical-align: middle;
}
.difficulty-badge.easy { background: #d1fae5; color: #065f46; }
.difficulty-badge.medium { background: #fef3c7; color: #92400e; }
.difficulty-badge.hard { background: #fee2e2; color: #991b1b; }

/* ===== Task Detail Boxes ===== */
.task-detail {
  background: #f9fafb;
  border: 1px solid #e5e7eb;
  border-radius: 0.5rem;
  padding: 1rem;
  font-size: 0.85rem;
  line-height: 1.7;
}
.task-detail h4 {
  font-weight: 600;
  margin-top: 0.75rem;
  margin-bottom: 0.25rem;
}
.task-detail h4:first-child { margin-top: 0; }
.task-detail ul, .task-detail ol {
  margin-left: 1.25rem;
  margin-bottom: 0.25rem;
}
.task-detail ul { list-style: disc; }
.task-detail ol { list-style: decimal; }
.task-detail code {
  background: #e5e7eb;
  padding: 0.1rem 0.35rem;
  border-radius: 0.25rem;
  font-size: 0.8rem;
}

/* ===== BibTeX ===== */
.bibtex-block {
  background: #f9fafb;
  border: 1px solid #e5e7eb;
  border-radius: 0.5rem;
  padding: 1rem 1.25rem;
  font-size: 0.8rem;
  line-height: 1.7;
  overflow-x: auto;
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
}

/* ===== Scroll smooth ===== */
html { scroll-behavior: smooth; }

/* ===== Medal colors for rank column ===== */
.rank-gold { color: #d97706; font-weight: 700; }
.rank-silver { color: #6b7280; font-weight: 700; }
.rank-bronze { color: #b45309; font-weight: 700; }