/* =============================================
   BẰNG THPT CẤP 3 PAGE STYLES
   ============================================= */

/* Hero override – đỏ/cam */
.hero-thpt {
  background: linear-gradient(135deg, #0f172a 0%, #1c1917 40%, #7c2d12 100%);
}

.hero-thpt::before {
  background: radial-gradient(circle, rgba(234,88,12,.3) 0%, transparent 70%);
}

.gradient-text-thpt {
  background: linear-gradient(135deg, #fdba74 0%, #fb923c 50%, #f97316 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* TOC */
.toc-box-thpt {
  border-color: rgba(234,88,12,.2);
  background: rgba(234,88,12,.05);
}

.toc-box-thpt h3 { color: #ea580c; }
.toc-box-thpt .toc-list li a { color: #c2410c; }
.toc-box-thpt .toc-list li a:hover { color: #ea580c; }

/* THPT note */
.thpt-note {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  background: #fff7ed;
  border: 2px solid #fed7aa;
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  margin-top: 28px;
}

.thpt-note-icon { font-size: 24px; flex-shrink: 0; }

.thpt-note p {
  font-size: 14px;
  color: #7c2d12;
  line-height: 1.75;
  margin: 0;
}

/* Yếu tố grid */
.yeuto-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}

.yeuto-col {
  background: var(--white);
  border: 2px solid var(--gray-light);
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.yeuto-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 20px 24px;
  background: var(--primary-light);
  border-bottom: 2px solid var(--gray-light);
}

.yeuto-icon { font-size: 26px; }

.yeuto-header h3 {
  font-size: 15px;
  font-weight: 700;
  color: var(--primary-dark);
}

.yeuto-items {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.yeuto-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 20px 24px;
  border-bottom: 1px solid var(--gray-light);
  transition: var(--transition);
}

.yeuto-item:last-child { border-bottom: none; }
.yeuto-item:hover { background: var(--gray-bg); }

.yeuto-badge {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .05em;
  padding: 4px 12px;
  border-radius: 100px;
  white-space: nowrap;
  flex-shrink: 0;
  margin-top: 2px;
}

.yeuto-blue  { background: #dbeafe; color: #1d4ed8; }
.yeuto-green { background: #dcfce7; color: #15803d; }
.yeuto-orange{ background: #ffedd5; color: #c2410c; }
.yeuto-purple{ background: #f3e8ff; color: #7e22ce; }

.yeuto-item strong {
  display: block;
  font-size: 14px;
  color: var(--dark);
  margin-bottom: 6px;
}

.yeuto-item p {
  font-size: 13px;
  color: var(--gray);
  line-height: 1.7;
  margin: 0;
}

/* Price table */
.price-table-wrap {
  overflow-x: auto;
}

.price-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--white);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.price-table thead tr {
  background: linear-gradient(135deg, var(--dark) 0%, var(--dark-2) 100%);
}

.price-table thead th {
  padding: 16px 20px;
  font-size: 13px;
  font-weight: 700;
  color: var(--white);
  text-align: left;
  letter-spacing: .04em;
}

.price-table tbody tr {
  border-bottom: 1px solid var(--gray-light);
  transition: background .2s;
}

.price-table tbody tr:hover { background: var(--gray-bg); }
.price-table tbody tr:last-child { border-bottom: none; }

.price-table tbody td {
  padding: 18px 20px;
  font-size: 14px;
  color: var(--dark-3);
  vertical-align: middle;
}

.price-table tbody td strong { color: var(--dark); }

.table-sub {
  font-size: 12px;
  color: var(--gray);
  font-weight: 400;
}

.row-highlight { background: #fff7ed !important; }

.price-cell {
  font-size: 16px;
  font-weight: 700;
  color: var(--dark);
  white-space: nowrap;
}

.price-highlight { color: #ea580c; font-size: 18px; }

.btn-sm {
  padding: 7px 18px;
  font-size: 13px;
  border-radius: var(--radius);
}

.price-note {
  margin-top: 16px;
  font-size: 13px;
  color: var(--gray);
  font-style: italic;
}

/* Responsive */
@media (max-width: 1024px) {
  .yeuto-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .price-table thead th,
  .price-table tbody td { padding: 12px 14px; font-size: 13px; }
}