/* ============================================================
   Fusion Energy Dashboard - Styles
   ============================================================ */

:root {
  --bg-primary: #0a0e1a;
  --bg-secondary: #111827;
  --bg-card: #1a2236;
  --bg-card-hover: #1f2a42;
  --border: #2a3654;
  --text-primary: #e5e7eb;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  --accent-blue: #3b82f6;
  --accent-cyan: #06b6d4;
  --accent-purple: #8b5cf6;
  --accent-green: #10b981;
  --accent-yellow: #f59e0b;
  --accent-orange: #f97316;
  --accent-red: #ef4444;
  --accent-pink: #ec4899;
  --gradient-fusion: linear-gradient(135deg, #3b82f6, #8b5cf6, #ec4899);
  --gradient-energy: linear-gradient(135deg, #06b6d4, #10b981);
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.4);
  --shadow-lg: 0 10px 25px rgba(0,0,0,0.5);
  --radius: 12px;
  --radius-sm: 8px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Inter', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ---- Top Disclaimer Banner ---- */
.disclaimer-banner {
  background: linear-gradient(90deg, rgba(245, 158, 11, 0.15), rgba(239, 68, 68, 0.1));
  border-bottom: 1px solid rgba(245, 158, 11, 0.3);
  padding: 12px 24px;
  text-align: center;
  font-size: 0.85rem;
  color: var(--accent-yellow);
}
.disclaimer-banner strong { color: var(--accent-orange); }

/* ---- Header ---- */
header {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  padding: 32px 24px;
  text-align: center;
}
header h1 {
  font-size: 2.2rem;
  font-weight: 800;
  background: var(--gradient-fusion);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
}
header .subtitle {
  color: var(--text-secondary);
  font-size: 1rem;
  max-width: 700px;
  margin: 0 auto;
}
header .last-updated {
  color: var(--text-muted);
  font-size: 0.8rem;
  margin-top: 12px;
}
header .last-updated span { color: var(--accent-cyan); }

/* ---- What's New panel ---- */
.card.whats-new {
  border: 1px solid var(--accent-cyan);
  border-left: 4px solid var(--accent-cyan);
  background: linear-gradient(135deg, rgba(6,182,212,0.08), rgba(16,185,129,0.04));
  margin-bottom: 24px;
}
.whats-new-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.whats-new-head h3 { margin: 0; }
.whats-new-date {
  color: var(--accent-cyan);
  font-size: 0.8rem;
  font-weight: 500;
  margin-left: 6px;
}
.whats-new-badge {
  background: var(--gradient-energy);
  color: #04121a;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 999px;
  white-space: nowrap;
}
.whats-new-summary {
  color: var(--text-secondary);
  margin: 8px 0 14px;
}

/* ---- Navigation ---- */
nav {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 100;
}
nav ul {
  display: flex;
  list-style: none;
  justify-content: center;
  gap: 4px;
  overflow-x: auto;
  padding: 8px 0;
}
nav a {
  display: block;
  padding: 10px 20px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: all 0.2s;
  white-space: nowrap;
}
nav a:hover, nav a.active {
  color: var(--text-primary);
  background: var(--bg-card);
}
nav a.active {
  color: var(--accent-cyan);
  background: rgba(6, 182, 212, 0.1);
}

/* ---- Main Content ---- */
main {
  max-width: 1400px;
  margin: 0 auto;
  padding: 24px;
}

/* ---- Sections ---- */
.section {
  display: none;
  animation: fadeIn 0.3s ease;
}
.section.active { display: block; }

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

.section-header {
  margin-bottom: 24px;
}
.section-header h2 {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-primary);
}
.section-header p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* ---- Cards ---- */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 16px;
  transition: all 0.2s;
}
.card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(59, 130, 246, 0.3);
  box-shadow: var(--shadow-md);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.card-header h3 {
  font-size: 1.2rem;
  font-weight: 700;
}
.card-header .meta {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

/* ---- Badges / Tags ---- */
.badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.badge-tokamak { background: rgba(59, 130, 246, 0.2); color: var(--accent-blue); }
.badge-stellarator { background: rgba(139, 92, 246, 0.2); color: var(--accent-purple); }
.badge-frc { background: rgba(236, 72, 153, 0.2); color: var(--accent-pink); }
.badge-icf { background: rgba(249, 115, 22, 0.2); color: var(--accent-orange); }
.badge-other { background: rgba(16, 185, 129, 0.2); color: var(--accent-green); }
.badge-private { background: rgba(6, 182, 212, 0.15); color: var(--accent-cyan); border: 1px solid rgba(6, 182, 212, 0.3); }
.badge-government { background: rgba(245, 158, 11, 0.15); color: var(--accent-yellow); border: 1px solid rgba(245, 158, 11, 0.3); }

/* ---- Status indicators ---- */
.status-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-right: 6px;
}
.status-achieved { background: var(--accent-green); box-shadow: 0 0 6px var(--accent-green); }
.status-pending { background: var(--accent-yellow); box-shadow: 0 0 6px var(--accent-yellow); }
.status-failed { background: var(--accent-red); box-shadow: 0 0 6px var(--accent-red); }

/* ---- Grid Layouts ---- */
.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(400px, 1fr)); gap: 16px; }
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 16px; }
.grid-4 { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 16px; }

/* ---- Stats Grid ---- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 32px;
}
.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
}
.stat-card .stat-value {
  font-size: 2rem;
  font-weight: 800;
  background: var(--gradient-fusion);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-card .stat-label {
  color: var(--text-secondary);
  font-size: 0.85rem;
  margin-top: 4px;
}

/* ---- Milestone Timeline ---- */
.timeline {
  position: relative;
  padding-left: 24px;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 7px;
  top: 4px;
  bottom: 4px;
  width: 2px;
  background: var(--border);
}
.timeline-item {
  position: relative;
  padding: 8px 0 8px 20px;
  font-size: 0.9rem;
}
.timeline-item::before {
  content: '';
  position: absolute;
  left: -20px;
  top: 14px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 2px solid var(--border);
  background: var(--bg-primary);
}
.timeline-item.achieved::before {
  background: var(--accent-green);
  border-color: var(--accent-green);
  box-shadow: 0 0 8px rgba(16, 185, 129, 0.4);
}
.timeline-item.pending::before {
  background: var(--accent-yellow);
  border-color: var(--accent-yellow);
}
.timeline-item .year {
  font-weight: 700;
  color: var(--accent-cyan);
  min-width: 80px;
  display: inline-block;
}
.timeline-item .event { color: var(--text-primary); }
.timeline-item .note {
  color: var(--text-muted);
  font-size: 0.8rem;
  font-style: italic;
  margin-left: 4px;
}

/* ---- Confidence Meter ---- */
.confidence-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 8px 0;
}
.confidence-track {
  flex: 1;
  height: 8px;
  background: rgba(255,255,255,0.1);
  border-radius: 4px;
  overflow: hidden;
}
.confidence-fill {
  height: 100%;
  border-radius: 4px;
  transition: width 0.6s ease;
}
.confidence-label {
  font-size: 0.85rem;
  font-weight: 600;
  min-width: 40px;
  text-align: right;
}

/* ---- Signal Cards ---- */
.signal-card {
  border-left: 3px solid;
  padding-left: 20px;
}
.signal-positive { border-color: var(--accent-green); }
.signal-negative { border-color: var(--accent-red); }
.signal-card .signal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
  flex-wrap: wrap;
  gap: 8px;
}
.signal-card h4 { font-size: 1rem; }
.signal-card .signal-date { color: var(--text-muted); font-size: 0.8rem; }
.signal-card .signal-detail { color: var(--text-secondary); font-size: 0.9rem; margin-bottom: 8px; }
.signal-card .signal-caveat {
  background: rgba(245, 158, 11, 0.08);
  border: 1px solid rgba(245, 158, 11, 0.2);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-size: 0.85rem;
  color: var(--accent-yellow);
}
.signal-card .signal-caveat::before { content: 'Caveat: '; font-weight: 700; }

.significance-badge {
  padding: 2px 10px;
  border-radius: 12px;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
}
.significance-high { background: rgba(239, 68, 68, 0.2); color: var(--accent-red); }
.significance-medium { background: rgba(245, 158, 11, 0.2); color: var(--accent-yellow); }
.significance-low { background: rgba(107, 114, 128, 0.2); color: var(--text-muted); }

/* ---- Assumption Cards ---- */
.assumption-card .status-label {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
}
.status-validated { background: rgba(16, 185, 129, 0.2); color: var(--accent-green); }
.status-partial { background: rgba(245, 158, 11, 0.2); color: var(--accent-yellow); }
.status-unvalidated { background: rgba(239, 68, 68, 0.2); color: var(--accent-red); }

/* ---- Progress Meter ---- */
.progress-meter {
  margin: 16px 0;
  background: rgba(255,255,255,0.03);
  border-radius: var(--radius-sm);
  padding: 14px 16px 10px;
}
.progress-meter .pm-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}
.progress-meter .pm-label-text {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.progress-meter .pm-note {
  font-size: 0.78rem;
  color: var(--text-secondary);
  margin-top: 8px;
  font-style: italic;
}
.pm-stages {
  display: flex;
  gap: 3px;
  width: 100%;
}
.pm-stage {
  flex: 1;
  position: relative;
}
.pm-stage-track {
  height: 22px;
  background: rgba(255,255,255,0.06);
  border-radius: 3px;
  overflow: hidden;
  position: relative;
}
.pm-stage:first-child .pm-stage-track { border-radius: 6px 3px 3px 6px; }
.pm-stage:last-child .pm-stage-track { border-radius: 3px 6px 6px 3px; }
.pm-stage-fill {
  height: 100%;
  border-radius: inherit;
  transition: width 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}
.pm-stage.completed .pm-stage-track { background: rgba(255,255,255,0.06); }
.pm-stage.completed .pm-stage-fill { width: 100% !important; }
.pm-stage.current .pm-stage-track {
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.1);
}
.pm-stage-name {
  font-size: 0.62rem;
  text-transform: uppercase;
  letter-spacing: 0.3px;
  color: var(--text-muted);
  text-align: center;
  margin-top: 5px;
  line-height: 1.2;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.pm-stage.completed .pm-stage-name { color: var(--text-secondary); }
.pm-stage.current .pm-stage-name { color: var(--accent-cyan); font-weight: 700; }

/* stage-specific fill colors */
.pm-fill-0 { background: linear-gradient(90deg, #6366f1, #818cf8); }
.pm-fill-1 { background: linear-gradient(90deg, #818cf8, #8b5cf6); }
.pm-fill-2 { background: linear-gradient(90deg, #8b5cf6, #a78bfa); }
.pm-fill-3 { background: linear-gradient(90deg, #3b82f6, #60a5fa); }
.pm-fill-4 { background: linear-gradient(90deg, #06b6d4, #22d3ee); }
.pm-fill-5 { background: linear-gradient(90deg, #10b981, #34d399); }
.pm-fill-6 { background: linear-gradient(90deg, #f59e0b, #fbbf24); }
.pm-fill-7 { background: linear-gradient(90deg, #f97316, #fb923c); }

/* Pulse on current stage */
.pm-stage.current .pm-stage-fill {
  animation: pulseFill 2.5s ease-in-out infinite;
}
@keyframes pulseFill {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

/* ---- Overview progress comparison bar ---- */
.overview-pm-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid rgba(255,255,255,0.04);
}
.overview-pm-row:last-child { border-bottom: none; }
.overview-pm-name {
  min-width: 180px;
  max-width: 180px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.overview-pm-bar-wrap {
  flex: 1;
  display: flex;
  gap: 2px;
  height: 14px;
}
.overview-pm-seg {
  flex: 1;
  background: rgba(255,255,255,0.06);
  border-radius: 2px;
  overflow: hidden;
}
.overview-pm-seg:first-child { border-radius: 4px 2px 2px 4px; }
.overview-pm-seg:last-child { border-radius: 2px 4px 4px 2px; }
.overview-pm-seg-fill {
  height: 100%;
  border-radius: inherit;
}
.overview-pm-stage-label {
  min-width: 120px;
  max-width: 120px;
  font-size: 0.75rem;
  color: var(--accent-cyan);
  text-align: right;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

@media (max-width: 768px) {
  .overview-pm-name { min-width: 100px; max-width: 100px; font-size: 0.75rem; }
  .overview-pm-stage-label { min-width: 80px; max-width: 80px; font-size: 0.7rem; }
  .pm-stage-name { font-size: 0.55rem; }
}

.assumption-card .category-tag {
  color: var(--text-muted);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 8px;
}

/* ---- Feasibility & Assumption drop-down cards ---- */
.feasibility-card,
.assumption-card {
  transition: all 0.2s;
}
.feasibility-card:hover,
.assumption-card:hover {
  border-color: rgba(6, 182, 212, 0.3);
}
.feas-sub:last-child {
  margin-bottom: 0 !important;
  padding-bottom: 0 !important;
  border-bottom: none !important;
}
@media (max-width: 768px) {
  .assumption-dropdown [style*="grid-template-columns: 1fr 1fr"] {
    grid-template-columns: 1fr !important;
  }
}

/* ---- Expandable sections ---- */
.expandable-header {
  cursor: pointer;
  user-select: none;
  display: flex;
  align-items: center;
  gap: 8px;
}
.expandable-header .chevron {
  transition: transform 0.2s;
  font-size: 0.8rem;
  color: var(--text-muted);
}
.expandable-header.open .chevron { transform: rotate(90deg); }
.expandable-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}
.expandable-content.open { max-height: 2000px; }

/* ---- Key Metrics ---- */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 8px;
  margin: 12px 0;
}
.metric-item {
  background: rgba(255,255,255,0.03);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
}
.metric-item .metric-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
}
.metric-item .metric-value {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--accent-cyan);
}

/* ---- Uncertainty List ---- */
.uncertainty-list {
  list-style: none;
  margin-top: 12px;
}
.uncertainty-list li {
  position: relative;
  padding: 6px 0 6px 20px;
  font-size: 0.85rem;
  color: var(--text-secondary);
}
.uncertainty-list li::before {
  content: '?';
  position: absolute;
  left: 0;
  color: var(--accent-yellow);
  font-weight: 700;
  font-size: 0.9rem;
}

/* ---- Comparison Table ---- */
.comparison-table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
}
.comparison-table th, .comparison-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
}
.comparison-table th {
  color: var(--text-muted);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 600;
}
.comparison-table tr:hover td { background: rgba(255,255,255,0.02); }

/* ---- Waste Comparison ---- */
.waste-comparison {
  display: flex;
  gap: 24px;
  margin: 16px 0;
  flex-wrap: wrap;
}
.waste-col {
  flex: 1;
  min-width: 280px;
  background: rgba(255,255,255,0.02);
  border-radius: var(--radius);
  padding: 20px;
}
.waste-col h4 {
  margin-bottom: 12px;
  font-size: 1rem;
}
.waste-col.fusion-col { border-top: 3px solid var(--accent-green); }
.waste-col.fission-col { border-top: 3px solid var(--accent-red); }

/* ---- Timeline Scenarios ---- */
.scenario-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
}
.scenario-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  position: relative;
  overflow: hidden;
}
.scenario-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
}
.scenario-optimistic::before { background: var(--accent-green); }
.scenario-moderate::before { background: var(--accent-blue); }
.scenario-pessimistic::before { background: var(--accent-orange); }
.scenario-never::before { background: var(--accent-red); }
.scenario-card h4 { margin-bottom: 16px; font-size: 1.05rem; }
.scenario-item {
  display: flex;
  justify-content: space-between;
  padding: 8px 0;
  border-bottom: 1px solid rgba(255,255,255,0.05);
  font-size: 0.9rem;
}
.scenario-item .scenario-label { color: var(--text-secondary); }
.scenario-item .scenario-value { font-weight: 600; color: var(--accent-cyan); }
.scenario-probability {
  margin-top: 16px;
  padding: 12px;
  background: rgba(255,255,255,0.03);
  border-radius: var(--radius-sm);
  text-align: center;
  font-size: 0.9rem;
}
.scenario-probability .prob-value { font-size: 1.4rem; font-weight: 800; }

/* ---- Funding ---- */
.funding-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 8px 0;
}
.funding-bar .company-name {
  min-width: 160px;
  font-size: 0.9rem;
  color: var(--text-secondary);
}
.funding-bar-track {
  flex: 1;
  height: 24px;
  background: rgba(255,255,255,0.05);
  border-radius: 4px;
  overflow: hidden;
  position: relative;
}
.funding-bar-fill {
  height: 100%;
  background: var(--gradient-fusion);
  border-radius: 4px;
  display: flex;
  align-items: center;
  padding-left: 8px;
  font-size: 0.75rem;
  font-weight: 600;
  min-width: fit-content;
  padding-right: 8px;
}

/* ---- Filter Controls ---- */
.filter-bar {
  display: flex;
  gap: 8px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}
.filter-btn {
  padding: 8px 16px;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: transparent;
  color: var(--text-secondary);
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.2s;
}
.filter-btn:hover { border-color: var(--accent-blue); color: var(--text-primary); }
.filter-btn.active { background: rgba(59, 130, 246, 0.2); border-color: var(--accent-blue); color: var(--accent-blue); }

/* ---- Safety Feature Cards ---- */
.safety-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 16px;
}
.safety-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}
.safety-card h4 {
  color: var(--accent-green);
  margin-bottom: 8px;
}
.safety-card .comparison {
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px solid var(--border);
  font-size: 0.85rem;
  color: var(--text-muted);
}
.safety-card .comparison::before { content: 'vs Fission: '; font-weight: 600; color: var(--accent-orange); }

/* ---- Footer ---- */
footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 32px 24px;
  text-align: center;
  margin-top: 48px;
}
footer p {
  color: var(--text-muted);
  font-size: 0.85rem;
  max-width: 800px;
  margin: 0 auto;
  line-height: 1.8;
}
footer .sources-note {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
  header h1 { font-size: 1.6rem; }
  nav ul { justify-content: flex-start; }
  main { padding: 16px; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .card-header { flex-direction: column; }
  .funding-bar .company-name { min-width: 100px; font-size: 0.8rem; }
  .waste-comparison { flex-direction: column; }
  .safety-grid { grid-template-columns: 1fr; }
  .scenario-cards { grid-template-columns: 1fr; }
}

/* ---- Scrollbar ---- */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ---- Print styles ---- */
@media print {
  body { background: white; color: #1a1a1a; }
  nav, .disclaimer-banner { display: none; }
  .section { display: block !important; page-break-inside: avoid; }
  .card { border: 1px solid #ddd; box-shadow: none; background: white; }
}