:root {
  --bg-page: #f8fafc;
  --bg-card: #ffffff;
  --bg-navy: #0f172a;
  --bg-navy-light: #1e293b;
  --text-main: #0f172a;
  --text-muted: #475569;
  --text-light: #94a3b8;
  --accent-blue: #2563eb;
  --accent-teal: #0d9488;
  --accent-crimson: #e11d48;
  --accent-amber: #d97706;
  --accent-purple: #7c3aed;
  --border-color: #e2e8f0;
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08);
  --radius: 10px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--bg-page);
  color: var(--text-main);
  line-height: 1.55;
  font-size: 14.5px;
}

/* Header */
.hero-header {
  background: linear-gradient(135deg, #0f172a 0%, #312e81 55%, #0f766e 100%);
  color: #ffffff;
  padding: 2.4rem 2rem 2rem;
  border-bottom: 3px solid #38bdf8;
}

.container {
  max-width: 1440px;
  margin: 0 auto;
}

.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-bottom: 0.85rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.7rem;
  border-radius: 999px;
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  background: rgba(255, 255, 255, 0.14);
  color: #e0f2fe;
  border: 1px solid rgba(255, 255, 255, 0.22);
}

.badge.highlight {
  background: rgba(16, 185, 129, 0.22);
  color: #a7f3d0;
  border-color: rgba(16, 185, 129, 0.45);
}

.hero-title {
  font-size: 1.85rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 0.55rem;
  line-height: 1.25;
}

.hero-subtitle {
  color: #cbd5e1;
  font-size: 0.98rem;
  max-width: 1080px;
  margin-bottom: 1.25rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.55rem 1.05rem;
  border-radius: 7px;
  font-size: 0.85rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.15s ease;
}

.btn-primary {
  background: #38bdf8;
  color: #0f172a;
}

.btn-primary:hover {
  background: #7dd3fc;
}

.btn-outline {
  background: rgba(255, 255, 255, 0.1);
  color: #f8fafc;
  border-color: rgba(255, 255, 255, 0.28);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* Sticky Control Bar */
.control-bar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  padding: 0.85rem 2rem;
}

.control-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  align-items: end;
}

.control-group label {
  display: block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  margin-bottom: 0.3rem;
}

.control-group select,
.control-group input {
  width: 100%;
  padding: 0.5rem 0.7rem;
  border-radius: 6px;
  border: 1px solid #cbd5e1;
  background-color: #ffffff;
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--text-main);
}

.control-group select:focus,
.control-group input:focus {
  outline: none;
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.15);
}

/* Main Content Layout */
.main-content {
  padding: 1.6rem 2rem 3.5rem;
}

/* KPI Strip */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 0.9rem;
  margin-bottom: 1.5rem;
}

@media (max-width: 1150px) {
  .kpi-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}
@media (max-width: 680px) {
  .kpi-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.kpi-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
  box-shadow: var(--shadow-sm);
  border-top: 3px solid var(--accent-blue);
  transition: transform 0.15s ease;
}

.kpi-card.active-model {
  border-top-width: 4px;
  border-top-color: var(--accent-crimson);
  background: #fff1f2;
}

.kpi-card.m1 { border-top-color: #64748b; }
.kpi-card.m2 { border-top-color: #3b82f6; }
.kpi-card.m3 { border-top-color: #0d9488; }
.kpi-card.m4 { border-top-color: #d97706; }
.kpi-card.m5 { border-top-color: #e11d48; }

.kpi-label {
  font-size: 0.74rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.25rem;
}

.kpi-value {
  font-size: 1.65rem;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.15;
}

.kpi-sub {
  font-size: 0.76rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

/* Section Cards */
.section-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 1.4rem 1.5rem;
  box-shadow: var(--shadow-sm);
  margin-bottom: 1.5rem;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-color);
}

.section-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--bg-navy);
}

.section-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 0.15rem;
}

.chart-row-2col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.4rem;
  margin-bottom: 1.5rem;
}

@media (max-width: 1024px) {
  .chart-row-2col {
    grid-template-columns: 1fr;
  }
}

.plot-box {
  width: 100%;
  height: 410px;
}

/* Table Styling */
.table-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  align-items: center;
  margin-bottom: 0.9rem;
}

.table-controls input[type="text"] {
  padding: 0.48rem 0.8rem;
  border: 1px solid #cbd5e1;
  border-radius: 6px;
  font-size: 0.86rem;
  min-width: 250px;
}

.table-controls select {
  padding: 0.48rem 0.7rem;
  border: 1px solid #cbd5e1;
  border-radius: 6px;
  font-size: 0.85rem;
}

.table-wrapper {
  overflow-x: auto;
  max-height: 580px;
  overflow-y: auto;
  border: 1px solid var(--border-color);
  border-radius: 8px;
}

table.results-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.82rem;
  text-align: right;
}

table.results-table th {
  position: sticky;
  top: 0;
  background: #f1f5f9;
  color: #1e293b;
  font-weight: 700;
  padding: 0.65rem 0.65rem;
  border-bottom: 2px solid #cbd5e1;
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
  z-index: 10;
}

table.results-table th:hover {
  background: #e2e8f0;
}

table.results-table th:first-child,
table.results-table td:first-child,
table.results-table th:nth-child(2),
table.results-table td:nth-child(2) {
  text-align: left;
}

table.results-table td {
  padding: 0.55rem 0.65rem;
  border-bottom: 1px solid #f1f5f9;
  white-space: nowrap;
}

table.results-table tr:hover {
  background-color: #f0f9ff;
  cursor: pointer;
}

table.results-table tr.selected-row {
  background-color: #fef2f2;
  font-weight: 600;
}

.pill-group {
  display: inline-block;
  padding: 0.12rem 0.48rem;
  border-radius: 4px;
  font-size: 0.74rem;
  font-weight: 700;
}
.pill-CD, .pill-DEE { background: #fee2e2; color: #991b1b; }
.pill-UC, .pill-GGE { background: #ccfbf1; color: #115e59; }
.pill-IBD, .pill-EPI { background: #dbeafe; color: #1e40af; }
.pill-NAFE { background: #fef3c7; color: #92400e; }

.p-sig {
  color: #be123c;
  font-weight: 700;
  background: #ffe4e6;
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
}

.p-sug {
  color: #b45309;
  font-weight: 600;
}

/* Summary Matrix Table */
table.matrix-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.84rem;
}

table.matrix-table th,
table.matrix-table td {
  padding: 0.6rem 0.75rem;
  border-bottom: 1px solid var(--border-color);
  text-align: right;
}

table.matrix-table th:first-child,
table.matrix-table td:first-child,
table.matrix-table th:nth-child(2),
table.matrix-table td:nth-child(2),
table.matrix-table th:nth-child(3),
table.matrix-table td:nth-child(3) {
  text-align: left;
}

table.matrix-table thead th {
  background: #f8fafc;
  font-weight: 700;
  border-bottom: 2px solid #cbd5e1;
}

/* Figures Gallery */
.fig-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.6rem;
}

.fig-card {
  border: 1px solid var(--border-color);
  border-radius: 10px;
  overflow: hidden;
  background: #ffffff;
  box-shadow: var(--shadow-sm);
}

.fig-card img {
  width: 100%;
  max-height: 760px;
  object-fit: contain;
  height: auto;
  display: block;
  margin: 0 auto;
  padding: 0.6rem;
  background: #ffffff;
  border-bottom: 1px solid var(--border-color);
  cursor: zoom-in;
}

.fig-caption {
  padding: 0.9rem 1.15rem;
  font-size: 0.86rem;
  color: var(--text-muted);
  background: #f8fafc;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.fig-caption strong {
  color: var(--text-main);
}

.fig-open-link {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--accent-blue);
  text-decoration: none;
  white-space: nowrap;
}

.fig-open-link:hover {
  text-decoration: underline;
}

/* Methods Grid */
.methods-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.2rem;
}

.method-box {
  background: #f8fafc;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1rem 1.15rem;
}

.method-box h4 {
  font-size: 0.95rem;
  color: var(--bg-navy);
  margin-bottom: 0.45rem;
}

.method-box p {
  font-size: 0.84rem;
  color: var(--text-muted);
}

.formula-block {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 6px;
  padding: 0.65rem 0.85rem;
  margin-top: 0.55rem;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 0.8rem;
  color: #0f172a;
  overflow-x: auto;
}

footer {
  text-align: center;
  padding: 2rem;
  color: var(--text-muted);
  font-size: 0.82rem;
  border-top: 1px solid var(--border-color);
  background: #ffffff;
}