@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800&display=swap');

:root {
  --bg-primary: #0b0f19;
  --bg-secondary: #131929;
  --bg-glass: rgba(19, 25, 41, 0.7);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(255, 215, 0, 0.3);
  
  --text-primary: #f3f4f6;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  
  --color-gold: #ffd700;
  --color-gold-gradient: linear-gradient(135deg, #ffe066 0%, #d4af37 100%);
  --color-red: #e63946;
  --color-red-gradient: linear-gradient(135deg, #ff6b6b 0%, #e63946 100%);
  --color-success: #10b981;
  --color-success-bg: rgba(16, 185, 129, 0.1);
  --color-error: #ef4444;
  --color-error-bg: rgba(239, 68, 68, 0.1);
  --color-blue: #3b82f6;
  --color-blue-gradient: linear-gradient(135deg, #60a5fa 0%, #2563eb 100%);
  
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
  
  --font-sans: 'Inter', sans-serif;
  --font-title: 'Outfit', sans-serif;
  
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.6;
  overflow-x: hidden;
  background-image: 
    radial-gradient(circle at 10% 20%, rgba(230, 57, 70, 0.05) 0%, transparent 40%),
    radial-gradient(circle at 90% 80%, rgba(212, 175, 55, 0.05) 0%, transparent 40%);
  background-attachment: fixed;
}

/* Scrollbar styling */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 215, 0, 0.3);
}

/* Layout Containers */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header Area */
header {
  padding: 60px 0 40px;
  text-align: center;
  border-bottom: 1px solid var(--border-color);
  background: linear-gradient(180deg, rgba(11, 15, 25, 0.8) 0%, transparent 100%);
  position: relative;
}

header::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 50%;
  transform: translateX(-50%);
  width: 100px;
  height: 2px;
  background: var(--color-gold-gradient);
  border-radius: 2px;
}

.header-badge {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 20px;
  background: rgba(212, 175, 55, 0.1);
  border: 1px solid rgba(212, 175, 55, 0.2);
  color: var(--color-gold);
  font-family: var(--font-title);
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  margin-bottom: 16px;
  text-transform: uppercase;
}

h1 {
  font-family: var(--font-title);
  font-size: 2.8rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 12px;
  background: linear-gradient(135deg, #ffffff 30%, #e5e7eb 70%, #d4af37 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.02em;
}

.sub-title {
  color: var(--text-secondary);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto;
  font-weight: 400;
}

/* Navigation Tabs */
.nav-tabs {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin: 30px 0 10px;
}

.tab-btn {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 12px 24px;
  border-radius: 12px;
  cursor: pointer;
  font-family: var(--font-title);
  font-weight: 600;
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition-fast);
}

.tab-btn:hover {
  background: rgba(255, 255, 255, 0.07);
  color: var(--text-primary);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

.tab-btn.active {
  background: var(--bg-secondary);
  color: var(--color-gold);
  border-color: var(--color-gold);
  box-shadow: 0 4px 15px rgba(212, 175, 55, 0.15);
}

/* Main Content Views */
.view-panel {
  display: none;
  padding: 40px 0 80px;
}

.view-panel.active {
  display: block;
  animation: fadeIn var(--transition-normal);
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Controls (Search & Filters) */
.controls-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 40px;
  gap: 20px;
  flex-wrap: wrap;
}

.search-box {
  position: relative;
  flex-grow: 1;
  max-width: 480px;
}

.search-input {
  width: 100%;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 14px 18px 14px 44px;
  border-radius: 12px;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  transition: var(--transition-fast);
  outline: none;
}

.search-input:focus {
  border-color: var(--color-gold);
  box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.1);
}

.search-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

.filter-group {
  display: flex;
  gap: 10px;
  align-items: center;
}

.filter-btn {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 10px 16px;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-fast);
}

.filter-btn:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
}

.filter-btn.active {
  background: rgba(212, 175, 55, 0.1);
  color: var(--color-gold);
  border-color: var(--color-gold);
}

/* Timeline Layout */
.timeline {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  padding: 20px 0;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 30px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--color-gold) 0%, rgba(212, 175, 55, 0.1) 100%);
}

.timeline-item {
  position: relative;
  margin-bottom: 50px;
  padding-left: 70px;
}

.timeline-dot {
  position: absolute;
  left: 19px;
  top: 24px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--bg-primary);
  border: 3px solid var(--color-gold);
  box-shadow: 0 0 10px var(--color-gold);
  z-index: 10;
  transition: var(--transition-fast);
}

.timeline-item:hover .timeline-dot {
  transform: scale(1.2);
  background: var(--color-gold);
  box-shadow: 0 0 15px var(--color-gold);
}

.timeline-card {
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 24px;
  transition: var(--transition-normal);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.timeline-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--color-gold-gradient);
  opacity: 0.7;
  transition: var(--transition-normal);
}

.timeline-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-md);
}

.timeline-card:hover::before {
  width: 6px;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 12px;
  gap: 16px;
}

.card-title-group {
  display: flex;
  flex-direction: column;
}

.congress-num {
  font-family: var(--font-title);
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--color-gold);
  line-height: 1;
  margin-bottom: 4px;
}

.congress-title {
  font-family: var(--font-title);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
}

.congress-meta {
  display: flex;
  gap: 16px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  flex-wrap: wrap;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.meta-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.meta-item svg {
  color: var(--color-gold);
  width: 14px;
  height: 14px;
}

.congress-summary {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: var(--transition-normal);
}

.timeline-card.expanded .congress-summary {
  display: block;
}

.congress-details {
  display: none;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 20px;
  margin-top: 16px;
  animation: slideDown 0.3s ease-out;
}

.timeline-card.expanded .congress-details {
  display: block;
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

.section-subtitle {
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-gold);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.decision-list {
  list-style: none;
  margin-bottom: 20px;
}

.decision-list li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 8px;
  font-size: 0.92rem;
  color: var(--text-primary);
}

.decision-list li::before {
  content: '✦';
  position: absolute;
  left: 0;
  color: var(--color-gold);
}

.badge-container {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.keyword-badge {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 500;
}

.card-expand-indicator {
  position: absolute;
  bottom: 12px;
  right: 20px;
  font-size: 0.8rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 4px;
  transition: var(--transition-fast);
}

.timeline-card:hover .card-expand-indicator {
  color: var(--color-gold);
}

.timeline-card.expanded .card-expand-indicator svg {
  transform: rotate(180deg);
}

/* Mindmap (Sơ đồ kiến thức) Styles */
.mindmap-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 24px;
}

.mindmap-node {
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 24px;
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.mindmap-node::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--color-blue-gradient);
}

.mindmap-node.theme-kinh_te::before { background: var(--color-gold-gradient); }
.mindmap-node.theme-doi_ngoai::before { background: var(--color-blue-gradient); }
.mindmap-node.theme-cuong_linh::before { background: var(--color-red-gradient); }
.mindmap-node.theme-tu_tuong_xay_dung_dang::before { background: linear-gradient(135deg, #10b981 0%, #059669 100%); }

.node-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.node-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.03);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-blue);
}

.theme-kinh_te .node-icon { color: var(--color-gold); background: rgba(212, 175, 55, 0.1); }
.theme-doi_ngoai .node-icon { color: var(--color-blue); background: rgba(59, 130, 246, 0.1); }
.theme-cuong_linh .node-icon { color: var(--color-red); background: rgba(230, 57, 70, 0.1); }
.theme-tu_tuong_xay_dung_dang .node-icon { color: var(--color-success); background: rgba(16, 185, 129, 0.1); }

.node-title {
  font-family: var(--font-title);
  font-size: 1.3rem;
  font-weight: 700;
}

.node-branches {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.branch-item {
  position: relative;
  padding-left: 16px;
}

.branch-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 0;
  width: 2px;
  background: rgba(255, 255, 255, 0.1);
}

.branch-label {
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--color-gold);
  margin-bottom: 4px;
}

.theme-doi_ngoai .branch-label { color: #60a5fa; }
.theme-cuong_linh .branch-label { color: #f87171; }
.theme-tu_tuong_xay_dung_dang .branch-label { color: #34d399; }

.branch-content {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* Extra Section: Milestones (Thống nhất & Đột phá) */
.extra-milestones {
  margin-top: 60px;
}

.section-header-centered {
  text-align: center;
  margin-bottom: 40px;
}

.section-header-centered h2 {
  font-family: var(--font-title);
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.milestones-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
  gap: 30px;
}

@media (max-width: 768px) {
  .milestones-grid {
    grid-template-columns: 1fr;
  }
}

.milestone-box {
  background: var(--bg-glass);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 24px;
}

.milestone-box-title {
  font-family: var(--font-title);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-gold);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.sub-timeline {
  position: relative;
  padding-left: 20px;
}

.sub-timeline::before {
  content: '';
  position: absolute;
  left: 4px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: rgba(255, 255, 255, 0.1);
}

.sub-timeline-item {
  position: relative;
  margin-bottom: 20px;
}

.sub-timeline-item:last-child {
  margin-bottom: 0;
}

.sub-timeline-dot {
  position: absolute;
  left: -20px;
  top: 6px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-gold);
}

.sub-timeline-time {
  font-family: var(--font-title);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-muted);
}

.sub-timeline-title {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-primary);
  margin: 2px 0 6px;
}

.sub-timeline-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
}

/* Quiz Section Styles */
.quiz-container {
  max-width: 800px;
  margin: 0 auto;
}

.quiz-setup {
  background: var(--bg-glass);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 40px;
  text-align: center;
  box-shadow: var(--shadow-md);
}

.quiz-setup h3 {
  font-family: var(--font-title);
  font-size: 1.8rem;
  font-weight: 800;
  margin-bottom: 16px;
}

.quiz-setup p {
  color: var(--text-secondary);
  margin-bottom: 30px;
}

.quiz-options-group {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 30px;
}

.quiz-type-btn {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 16px 28px;
  border-radius: 14px;
  font-family: var(--font-title);
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-fast);
  max-width: 260px;
  flex: 1 1 200px;
  text-align: left;
}

.quiz-type-btn:hover {
  border-color: var(--color-gold);
  background: rgba(255, 255, 255, 0.05);
}

.quiz-type-title {
  font-size: 1.1rem;
  color: var(--color-gold);
  margin-bottom: 4px;
}

.quiz-type-desc {
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-weight: 400;
}

.action-btn {
  background: var(--color-gold-gradient);
  border: none;
  color: #000000;
  padding: 14px 36px;
  border-radius: 10px;
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  box-shadow: 0 4px 15px rgba(212, 175, 55, 0.3);
  transition: var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.action-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(212, 175, 55, 0.4);
}

/* Quiz Active Panel */
.quiz-active {
  display: none;
}

.quiz-progress-bar-container {
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 3px;
  margin-bottom: 24px;
  overflow: hidden;
}

.quiz-progress-bar {
  height: 100%;
  width: 0%;
  background: var(--color-gold-gradient);
  transition: width 0.3s ease;
}

.quiz-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.quiz-stats {
  font-family: var(--font-title);
  font-weight: 600;
  font-size: 0.95rem;
}

.quiz-timer {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--color-gold);
  font-family: var(--font-title);
  font-weight: 700;
}

.quiz-card {
  background: var(--bg-glass);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 30px;
  box-shadow: var(--shadow-md);
  margin-bottom: 24px;
}

.question-text {
  font-size: 1.15rem;
  font-weight: 600;
  line-height: 1.5;
  margin-bottom: 24px;
}

.options-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.option-item {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 16px 20px;
  cursor: pointer;
  transition: var(--transition-fast);
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.option-item:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.2);
}

.option-prefix {
  font-family: var(--font-title);
  font-weight: 700;
  background: rgba(255, 255, 255, 0.05);
  width: 24px;
  height: 24px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-gold);
  flex-shrink: 0;
}

.option-text {
  font-size: 0.95rem;
}

/* Option States after answering */
.option-item.selected {
  border-color: var(--color-blue);
  background: rgba(59, 130, 246, 0.05);
}

.option-item.correct {
  border-color: var(--color-success);
  background: var(--color-success-bg);
}

.option-item.correct .option-prefix {
  background: var(--color-success);
  color: #ffffff;
}

.option-item.incorrect {
  border-color: var(--color-error);
  background: var(--color-error-bg);
}

.option-item.incorrect .option-prefix {
  background: var(--color-error);
  color: #ffffff;
}

.answer-explanation {
  margin-top: 20px;
  padding: 16px;
  background: rgba(16, 185, 129, 0.05);
  border-left: 4px solid var(--color-success);
  border-radius: 4px 12px 12px 4px;
  font-size: 0.92rem;
  display: none;
  animation: fadeIn 0.3s ease;
}

.answer-explanation.visible {
  display: block;
}

.quiz-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.secondary-btn {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 12px 24px;
  border-radius: 10px;
  font-family: var(--font-title);
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-fast);
}

.secondary-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.2);
}

/* Quiz Summary/Result Screen */
.quiz-results {
  display: none;
  background: var(--bg-glass);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 40px;
  text-align: center;
  box-shadow: var(--shadow-md);
}

.results-radial {
  position: relative;
  width: 140px;
  height: 140px;
  margin: 0 auto 24px;
  border-radius: 50%;
  background: radial-gradient(closest-side, var(--bg-secondary) 79%, transparent 80% 100%),
              conic-gradient(var(--color-gold) 0%, rgba(255, 255, 255, 0.05) 0%);
  display: flex;
  align-items: center;
  justify-content: center;
}

.results-score {
  font-family: var(--font-title);
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--color-gold);
}

.results-score span {
  font-size: 1rem;
  color: var(--text-secondary);
}

.results-title {
  font-family: var(--font-title);
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.results-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  max-width: 480px;
  margin: 0 auto 30px;
}

.results-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
}

/* Question Bank / Review Mode */
.review-questions-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-top: 30px;
}

.review-question-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 20px;
}

.review-q-num {
  font-family: var(--font-title);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-gold);
  margin-bottom: 8px;
  text-transform: uppercase;
}

.review-q-text {
  font-weight: 600;
  font-size: 1rem;
  margin-bottom: 16px;
}

.review-options {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 10px;
}

.review-opt {
  padding: 10px 14px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.review-opt.correct-ans {
  border-color: var(--color-success);
  background: var(--color-success-bg);
  color: var(--color-success);
  font-weight: 500;
}

/* Footer Section */
footer {
  text-align: center;
  padding: 40px 0;
  color: var(--text-muted);
  font-size: 0.85rem;
  border-top: 1px solid var(--border-color);
  margin-top: 80px;
}

/* Utilities */
.hidden {
  display: none !important;
}