/* =============================================
   BẰNG CAO ĐẲNG PAGE STYLES
   ============================================= */

/* Hero override */
.hero-caodang {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 35%, #064e3b 100%);
}

.hero-caodang::before {
  background: radial-gradient(circle, rgba(16,185,129,.25) 0%, transparent 70%);
}

.hero-caodang::after {
  background: radial-gradient(circle, rgba(245,158,11,.15) 0%, transparent 70%);
}

/* TOC */
.toc-section {
  background: var(--white);
  padding: 40px 0;
  border-bottom: 1px solid var(--gray-light);
}

.toc-box {
  background: var(--primary-light);
  border: 2px solid rgba(26,86,219,.15);
  border-radius: var(--radius-lg);
  padding: 28px 36px;
  max-width: 860px;
}

.toc-box h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 16px;
}

.toc-list {
  list-style: decimal;
  padding-left: 20px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px 40px;
}

.toc-list li a {
  font-size: 14px;
  color: var(--primary-dark);
  font-weight: 500;
  transition: var(--transition);
}

.toc-list li a:hover {
  color: var(--primary);
  text-decoration: underline;
}

@media (max-width: 640px) {
  .toc-list { grid-template-columns: 1fr; }
  .toc-box { padding: 20px; }
}

/* Article layout */
.article-section { padding: 80px 0; }
.bg-gray { background: var(--gray-bg); }
.bg-dark { background: linear-gradient(135deg, var(--dark) 0%, var(--dark-2) 100%); }

.article-tag {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .12em;
  padding: 5px 14px;
  border-radius: 100px;
  margin-bottom: 16px;
}

.article-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 60px;
  align-items: start;
}

.article-main > p {
  color: var(--gray);
  font-size: 16px;
  line-height: 1.85;
  margin-bottom: 16px;
}

/* Benefit cards */
.benefit-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 36px;
}

.benefit-card {
  background: var(--gray-bg);
  border: 1px solid var(--gray-light);
  border-radius: var(--radius-lg);
  padding: 28px 22px;
  transition: var(--transition);
}

.benefit-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.benefit-icon {
  font-size: 36px;
  margin-bottom: 14px;
}

.benefit-card h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 10px;
}

.benefit-card p {
  font-size: 13px;
  color: var(--gray);
  line-height: 1.75;
}

/* Sidebar */
.article-sidebar {
  display: flex;
  flex-direction: column;
  gap: 20px;
  position: sticky;
  top: 88px;
}

.sidebar-cta, .sidebar-price {
  background: var(--white);
  border: 2px solid var(--gray-light);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.sidebar-cta {
  background: linear-gradient(135deg, var(--dark) 0%, var(--dark-2) 100%);
  border-color: transparent;
}

.sidebar-cta h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 10px;
}

.sidebar-cta p {
  font-size: 13px;
  color: rgba(255,255,255,.65);
  margin-bottom: 16px;
  line-height: 1.65;
}

.sidebar-price h4 {
  font-size: 14px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 12px;
}

.sidebar-price-num {
  font-size: 26px;
  font-weight: 900;
  color: var(--primary);
  margin-bottom: 16px;
}

.sidebar-price-num span {
  font-size: 14px;
  font-weight: 600;
  color: var(--gray);
}

.sidebar-price ul {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 18px;
}

.sidebar-price ul li {
  font-size: 13px;
  color: var(--dark-3);
}

/* Quality grid */
.quality-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}

.quality-col {
  border-radius: var(--radius-lg);
  padding: 32px;
}

.quality-good {
  background: #f0fdf4;
  border: 2px solid #86efac;
}

.quality-bad {
  background: #fff7ed;
  border: 2px solid #fed7aa;
}

.quality-col h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--dark);
}

.quality-col ul {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.quality-col ul li {
  font-size: 14px;
  color: var(--dark-3);
  line-height: 1.75;
  padding-left: 16px;
  border-left: 3px solid;
  padding-bottom: 4px;
}

.quality-good ul li { border-color: #22c55e; }
.quality-bad ul li { border-color: #f97316; }

.quality-col > p {
  font-size: 14px;
  color: var(--dark-3);
  line-height: 1.75;
  margin-bottom: 16px;
}

/* Ngành nghề */
.nganh-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}

.nganh-card {
  background: var(--white);
  border: 2px solid var(--gray-light);
  border-radius: var(--radius-xl);
  padding: 36px;
  transition: var(--transition);
}

.nganh-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-lg);
}

.nganh-icon {
  font-size: 44px;
  margin-bottom: 16px;
}

.nganh-card h3 {
  font-size: 19px;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 10px;
}

.nganh-desc {
  font-size: 14px;
  color: var(--gray);
  line-height: 1.7;
  margin-bottom: 24px;
}

.nganh-list {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.nganh-list li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.nganh-tag {
  font-size: 22px;
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  background: var(--primary-light);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.nganh-list strong {
  display: block;
  font-size: 14px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 4px;
}

.nganh-list p {
  font-size: 13px;
  color: var(--gray);
  line-height: 1.65;
  margin: 0;
}

/* Warning list */
.warning-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
  max-width: 860px;
}

.warning-item {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  background: var(--white);
  border: 2px solid #fde68a;
  border-radius: var(--radius-lg);
  padding: 24px 28px;
  transition: var(--transition);
}

.warning-item:hover {
  border-color: #f59e0b;
  box-shadow: var(--shadow-md);
}

.warning-icon {
  font-size: 32px;
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  background: #fffbeb;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.warning-item h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 8px;
}

.warning-item p {
  font-size: 14px;
  color: var(--gray);
  line-height: 1.75;
  margin: 0;
}

/* FAQ note */
.faq-note {
  margin-top: 32px;
  background: var(--primary-light);
  border: 1px solid rgba(26,86,219,.2);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  max-width: 900px;
}

.faq-note p {
  font-size: 14px;
  color: var(--primary-dark);
  line-height: 1.75;
}

/* Author box */
.author-box {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid #fde68a;
}

.author-box strong {
  display: block;
  font-size: 15px;
  color: #92400e;
  margin-bottom: 4px;
}

/* Responsive */
@media (max-width: 1024px) {
  .article-layout { grid-template-columns: 1fr; }
  .article-sidebar { position: static; }
  .benefit-grid { grid-template-columns: 1fr 1fr; }
  .quality-grid { grid-template-columns: 1fr; }
  .nganh-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .benefit-grid { grid-template-columns: 1fr; }
  .warning-item { flex-direction: column; gap: 12px; }
}