:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #dbeafe;
    --success: #16a34a;
    --success-light: #dcfce7;
    --warning: #ca8a04;
    --warning-light: #fef3c7;
    --danger: #dc2626;
    --danger-light: #fee2e2;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
}
* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: 1.25rem;
    line-height: 1.6;
    color: var(--gray-800);
    background: var(--gray-100);
}

/* ---- Header + Nav: sticky together ---- */
.header-container { position: sticky; top: 0; z-index: 100; }
.header {
    background: white;
    border-bottom: 1px solid var(--gray-200);
    padding: 1.25rem 2rem;
}
.header h1 { font-size: 1.5rem; color: var(--gray-900); }
.header .subtitle { font-size: 0.95rem; color: var(--gray-700); }
.header .updated { font-size: 0.8rem; color: var(--gray-600); margin-top: 0.25rem; }

.nav {
    background: white;
    padding: 0.5rem 2rem;
    border-bottom: 1px solid var(--gray-200);
}
.nav-list { display: flex; list-style: none; gap: 0.25rem; }
.nav-link {
    display: flex; flex-direction: column;
    padding: 0.75rem 1.25rem;
    color: var(--gray-700);
    text-decoration: none;
    cursor: pointer;
    border-radius: 6px;
    background: #fef9e7;
    border-bottom: 3px solid transparent;
    transition: all 0.15s;
}
.nav-link:hover { background: #fef3c7; }
.nav-link.active { background: white; color: var(--gray-900); border-bottom-color: var(--primary); }
.nav-label { font-weight: 600; font-size: 0.9rem; }
.nav-desc { font-size: 0.7rem; color: var(--gray-600); }

/* ---- Content area ---- */
.content {
    background: white;
    padding: 2rem;
    min-height: calc(100vh - 120px);
}
.page { display: none; max-width: 1400px; margin: 0 auto; }
.page.active { display: block; }

/* ---- Page intro ---- */
.page-intro { margin-bottom: 1.5rem; padding-bottom: 1rem; border-bottom: 1px solid var(--gray-200); }
.page-title { font-size: 1.5rem; color: var(--gray-900); margin-bottom: 0.25rem; }
.page-subtitle { font-size: 0.95rem; color: var(--gray-600); max-width: 800px; }

/* ---- Summary cards ---- */
.summary-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 1.5rem; }
.card {
    background: linear-gradient(135deg, #fafafa 0%, var(--gray-100) 100%);
    border: 1px solid var(--gray-200);
    border-radius: 8px;
    padding: 1.25rem;
}
.card h4 { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--gray-600); margin-bottom: 0.25rem; }
.card .value { font-size: 1.75rem; font-weight: 700; color: var(--gray-900); }
.card .subtext { font-size: 0.8rem; color: var(--gray-600); margin-top: 0.25rem; }
.card.verified { background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%); border-color: var(--success); }
.card.unverified { background: linear-gradient(135deg, #fffbeb 0%, #fef3c7 100%); border-color: var(--warning); }

/* ---- Findings list ---- */
.findings-list {
    list-style: none; padding: 0; margin: 0 0 1.5rem 0;
    display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1rem;
}
.findings-list li {
    padding: 1rem 1.25rem;
    border-radius: 8px;
    font-size: 0.9rem;
    color: var(--gray-800);
    line-height: 1.5;
    background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%);
    border: 1px solid var(--success);
}
.findings-list li.unverified {
    background: linear-gradient(135deg, #fffbeb 0%, #fef3c7 100%);
    border-color: var(--warning);
}
.findings-list li a {
    color: var(--primary);
    font-size: 0.8rem;
    white-space: nowrap;
}

/* ---- Collapsible sections ---- */
.collapsible {
    background: linear-gradient(135deg, #fafafa 0%, var(--gray-50) 100%);
    border: 1px solid var(--gray-200);
    border-radius: 8px;
    margin-bottom: 1rem;
    overflow: hidden;
}
.collapsible-header {
    display: flex; justify-content: space-between; align-items: center;
    padding: 1rem 1.25rem;
    cursor: pointer; user-select: none;
    transition: background 0.15s;
}
.collapsible-header:hover { background: rgba(0,0,0,0.02); }
.collapsible-title { font-size: 0.95rem; font-weight: 600; color: var(--gray-800); }
.collapsible-subtitle { font-size: 0.8rem; color: var(--gray-600); margin-top: 0.15rem; }
.collapsible-icon { font-size: 0.7rem; color: var(--gray-600); transition: transform 0.2s; flex-shrink: 0; margin-left: 1rem; }
.collapsible.open .collapsible-icon { transform: rotate(180deg); }
.collapsible-content { display: none; padding: 0 1.25rem 1.25rem; border-top: 1px solid var(--gray-200); }
.collapsible.open .collapsible-content { display: block; }

/* ---- Tables ---- */
.evidence-table { width: 100%; border-collapse: collapse; font-size: 0.85rem; margin: 0.5rem 0; }
.evidence-table th, .evidence-table td { padding: 0.6rem 1rem; text-align: left; border-bottom: 1px solid var(--gray-200); }
.evidence-table th { background: var(--gray-100); font-weight: 600; font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.03em; color: var(--gray-600); }
.evidence-table tr:last-child td { border-bottom: none; }
.evidence-table a { color: var(--primary); text-decoration: none; }
.evidence-table a:hover { text-decoration: underline; }

/* ---- Flowcharts ---- */
.flowchart { background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%); border: 1px solid var(--primary-light); border-radius: 8px; padding: 1.5rem; margin: 1rem 0; }
.collapsible .flowchart { margin: 0.5rem 0; }
.flow-row { display: flex; align-items: center; justify-content: center; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 1rem; }
.flow-box { background: white; border: 2px solid var(--gray-200); border-radius: 8px; padding: 0.75rem 1rem; text-align: center; min-width: 120px; font-size: 0.85rem; }
.flow-box.verified { background: var(--success-light); border-color: var(--success); }
.flow-box.danger { background: var(--danger-light); border-color: var(--danger); }
.flow-arrow { font-size: 1.25rem; color: var(--gray-600); padding: 0 0.25rem; }
.flow-citation { background: white; border-left: 4px solid var(--primary); padding: 0.75rem 1rem; font-size: 0.8rem; margin-top: 0.5rem; border-radius: 0 6px 6px 0; }
.flow-citation a { color: var(--primary); }

/* ---- Badges ---- */
.badge { display: inline-block; padding: 0.2rem 0.5rem; border-radius: 4px; font-size: 0.7rem; font-weight: 600; }
.badge.verified { background: var(--success-light); color: var(--success); }
.badge.unverified { background: var(--warning-light); color: var(--warning); }
.badge.unknown { background: var(--gray-200); color: var(--gray-600); }

/* ---- Doc cards ---- */
.doc-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 1rem; }
.doc-card {
    background: linear-gradient(135deg, #fafafa 0%, var(--gray-50) 100%);
    border: 1px solid var(--gray-200);
    border-radius: 8px;
    padding: 1.25rem;
}
.doc-card h4 { color: var(--primary); margin-bottom: 0.5rem; font-size: 0.9rem; }
.doc-card p { font-size: 0.8rem; color: var(--gray-600); margin-bottom: 0.75rem; }
.doc-card .links { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.doc-card .links a { font-size: 0.75rem; color: var(--primary); text-decoration: none; padding: 0.25rem 0.5rem; background: var(--primary-light); border-radius: 4px; }
.doc-card .links a:hover { background: var(--primary); color: white; }

/* ---- Info boxes (alerts) ---- */
.info-box { background: #eff6ff; border-left: 4px solid var(--primary); padding: 1rem; border-radius: 0 8px 8px 0; margin: 1rem 0; font-size: 0.85rem; color: var(--primary-dark); }
.info-box.warning { background: #fef3c7; border-left-color: var(--warning); color: var(--gray-800); }
.info-box.success { background: #f0fdf4; border-left-color: var(--success); color: #166534; }

/* ---- CPRA box ---- */
.cpra-box {
    background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
    border: 1px solid var(--primary-light);
    border-radius: 8px;
    padding: 1.5rem;
}
.cpra-box pre { background: var(--gray-800); color: #e5e7eb; padding: 1rem; border-radius: 8px; font-size: 0.8rem; overflow-x: auto; white-space: pre-wrap; word-wrap: break-word; }
.copy-btn { background: var(--primary); color: white; border: none; padding: 0.5rem 1rem; border-radius: 6px; cursor: pointer; font-size: 0.8rem; margin-top: 0.75rem; }
.copy-btn:hover { background: var(--primary-dark); }

/* ---- Footer ---- */
.footer { text-align: center; padding: 1.5rem; color: var(--gray-600); font-size: 0.8rem; background: var(--gray-100); border-top: 1px solid var(--gray-200); }
.footer a { color: var(--primary); }

/* ---- Utilities ---- */
.row-success { background: var(--success-light); }
.row-warning { background: var(--warning-light); }