/* ============================================
   OPTKAS — INSTITUTIONAL OVERVIEW STYLESHEET
   Board-room mode · No animations · Clean authority
   ============================================ */

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

:root {
    --io-bg: #0a0e17;
    --io-surface: #111827;
    --io-card: #1e293b;
    --io-border: #2d3748;
    --io-border-light: #374151;
    --io-text: #e2e8f0;
    --io-text-secondary: #94a3b8;
    --io-text-muted: #64748b;
    --io-green: #10b981;
    --io-blue: #3b82f6;
    --io-amber: #f59e0b;
    --io-red: #ef4444;
    --io-cyan: #06b6d4;
    --l1: #1f4e79;
    --l2: #2e7d32;
    --l3: #c9a227;
    --l4: #e67e22;
    --l5: #6a1b9a;
    --l6: #555;
    --l7: #b71c1c;
}

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

html {
    scroll-behavior: smooth;
    font-size: 15px;
}

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

/* ============================================
   HEADER
   ============================================ */

.io-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--io-surface);
    border-bottom: 1px solid var(--io-border);
}

.io-header-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 24px 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.io-logo {
    font-size: 28px;
    font-weight: 800;
    letter-spacing: 0.08em;
    background: linear-gradient(135deg, #e2e8f0, #94a3b8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.io-tagline {
    font-size: 13px;
    color: var(--io-text-muted);
    letter-spacing: 0.04em;
    margin-top: 2px;
}

/* Readiness Score Ring */
.io-readiness-score {
    display: flex;
    align-items: center;
    gap: 16px;
}

.io-score-label {
    font-size: 13px;
    font-weight: 600;
    color: var(--io-text-secondary);
    letter-spacing: 0.02em;
}

.io-score-date {
    font-size: 11px;
    color: var(--io-text-muted);
    margin-top: 2px;
}

.io-score-status {
    display: inline-block;
    margin-top: 6px;
    padding: 2px 10px;
    border-radius: 10px;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.io-score-status.operational {
    background: rgba(16, 185, 129, 0.12);
    color: var(--io-green);
    border: 1px solid rgba(16, 185, 129, 0.25);
}

/* Navigation */
.io-nav {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 32px;
    display: flex;
    gap: 4px;
    border-top: 1px solid var(--io-border);
}

.io-nav a {
    display: block;
    padding: 12px 16px;
    font-size: 12px;
    font-weight: 500;
    color: var(--io-text-muted);
    text-decoration: none;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    transition: color 0.2s;
    border-bottom: 2px solid transparent;
}

.io-nav a:hover {
    color: var(--io-text);
    border-bottom-color: var(--io-blue);
}

.io-nav-full {
    margin-left: auto;
    color: var(--io-blue) !important;
}

/* ============================================
   MAIN CONTENT
   ============================================ */

.io-main {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 32px 80px;
}

.io-section {
    padding: 56px 0 40px;
    border-bottom: 1px solid var(--io-border);
}

.io-section:last-child {
    border-bottom: none;
}

.io-section-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--io-text);
    margin-bottom: 24px;
    letter-spacing: -0.01em;
}

.io-subsection-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--io-text-secondary);
    margin: 32px 0 16px;
}

.io-lead {
    font-size: 15px;
    color: var(--io-text-secondary);
    line-height: 1.75;
    max-width: 800px;
}

/* Highlight Bar */
.io-highlight-bar {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-top: 32px;
}

.io-highlight {
    background: var(--io-card);
    border: 1px solid var(--io-border);
    border-radius: 8px;
    padding: 20px;
    text-align: center;
}

.io-highlight-value {
    display: block;
    font-size: 32px;
    font-weight: 800;
    color: var(--io-text);
    line-height: 1;
}

.io-highlight-label {
    display: block;
    font-size: 12px;
    color: var(--io-text-muted);
    margin-top: 8px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ============================================
   METRICS GRID
   ============================================ */

.io-metrics-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.io-metric {
    background: var(--io-card);
    border: 1px solid var(--io-border);
    border-radius: 8px;
    padding: 20px;
}

.io-metric-value {
    font-size: 28px;
    font-weight: 800;
    color: var(--io-text);
    line-height: 1;
}

.io-metric-label {
    font-size: 12px;
    color: var(--io-text-muted);
    margin-top: 6px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.io-metric-status {
    margin-top: 12px;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.04em;
}

.io-metric-status.pass {
    color: var(--io-green);
}

/* ============================================
   ARCHITECTURE STACK
   ============================================ */

.io-arch-stack {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.io-arch-layer {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 14px 20px;
    background: var(--io-card);
    border: 1px solid var(--io-border);
    border-left: 5px solid var(--layer-color, var(--io-border));
    border-radius: 6px;
}

.io-arch-id {
    font-size: 14px;
    font-weight: 800;
    color: var(--layer-color, var(--io-text-muted));
    min-width: 32px;
}

.io-arch-info {
    flex: 1;
}

.io-arch-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--io-text);
}

.io-arch-desc {
    font-size: 12px;
    color: var(--io-text-muted);
    margin-top: 2px;
}

.io-arch-caps {
    font-size: 13px;
    font-weight: 700;
    color: var(--io-green);
    min-width: 60px;
    text-align: right;
}

/* ============================================
   DIAGRAMS
   ============================================ */

.io-diagram-container {
    margin: 24px 0;
    text-align: center;
}

.io-diagram {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    border: 1px solid var(--io-border);
}

/* ============================================
   SETTLEMENT FACTS
   ============================================ */

.io-settlement-facts {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-top: 24px;
}

.io-fact {
    display: flex;
    gap: 12px;
    padding: 16px;
    background: var(--io-card);
    border: 1px solid var(--io-border);
    border-radius: 8px;
}

.io-fact-icon {
    font-size: 24px;
    line-height: 1;
}

.io-fact strong {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--io-text);
    margin-bottom: 4px;
}

.io-fact p {
    font-size: 12px;
    color: var(--io-text-muted);
    line-height: 1.5;
}

/* ============================================
   GOVERNANCE
   ============================================ */

.io-gov-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-top: 24px;
}

.io-gov-card {
    background: var(--io-card);
    border: 1px solid var(--io-border);
    border-radius: 8px;
    padding: 24px;
    text-align: center;
}

.io-gov-card.emergency {
    border-color: var(--io-red);
}

.io-gov-threshold {
    font-size: 28px;
    font-weight: 800;
    color: var(--io-text);
}

.io-gov-label {
    font-size: 13px;
    font-weight: 600;
    color: var(--io-text-secondary);
    margin-top: 8px;
}

.io-gov-desc {
    font-size: 12px;
    color: var(--io-text-muted);
    margin-top: 4px;
}

.io-gov-footer {
    margin-top: 20px;
    font-size: 13px;
    color: var(--io-text-muted);
    font-style: italic;
    text-align: center;
}

/* ============================================
   RISK GRID
   ============================================ */

.io-risk-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.io-risk-card {
    background: var(--io-card);
    border: 1px solid var(--io-border);
    border-radius: 8px;
    padding: 20px;
    text-align: center;
}

.io-risk-metric {
    font-size: 32px;
    font-weight: 800;
    color: var(--io-text);
    line-height: 1;
}

.io-risk-label {
    font-size: 13px;
    font-weight: 600;
    color: var(--io-text-secondary);
    margin-top: 8px;
}

.io-risk-method {
    font-size: 11px;
    color: var(--io-text-muted);
    margin-top: 4px;
}

/* ============================================
   TABLE
   ============================================ */

.io-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 16px;
    font-size: 13px;
}

.io-table th {
    text-align: left;
    padding: 10px 16px;
    background: var(--io-surface);
    border-bottom: 2px solid var(--io-border);
    color: var(--io-text-muted);
    font-weight: 600;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.io-table td {
    padding: 10px 16px;
    border-bottom: 1px solid var(--io-border);
    color: var(--io-text-secondary);
}

.sev-green  { color: var(--io-green); font-weight: 600; }
.sev-yellow { color: var(--io-amber); font-weight: 600; }
.sev-orange { color: #e67e22; font-weight: 600; }
.sev-red    { color: var(--io-red); font-weight: 600; }

/* ============================================
   READINESS SCORECARD
   ============================================ */

.io-readiness-banner {
    display: flex;
    gap: 48px;
    align-items: center;
    padding: 32px;
    background: var(--io-card);
    border: 1px solid var(--io-border);
    border-radius: 12px;
}

.io-readiness-details {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.io-readiness-row {
    display: flex;
    align-items: center;
    gap: 12px;
}

.io-rd-domain {
    font-size: 12px;
    font-weight: 500;
    color: var(--io-text-secondary);
    min-width: 130px;
}

.io-rd-bar {
    flex: 1;
    height: 8px;
    background: var(--io-bg);
    border-radius: 4px;
    overflow: hidden;
}

.io-rd-fill {
    display: block;
    height: 100%;
    border-radius: 4px;
}

.io-rd-score {
    font-size: 12px;
    font-weight: 700;
    color: var(--io-text-muted);
    min-width: 50px;
    text-align: right;
}

/* Verdict */
.io-verdict {
    margin-top: 32px;
}

.io-verdict-table td {
    padding: 12px 16px;
}

.io-verdict-table td:first-child {
    font-size: 14px;
    color: var(--io-text-secondary);
}

.io-check {
    text-align: center;
    color: var(--io-green);
    font-size: 18px;
    font-weight: 700;
    width: 60px;
}

.io-check-final {
    font-size: 16px;
    color: var(--io-green);
}

.io-verdict-final td {
    border-top: 2px solid var(--io-green);
    font-weight: 700;
}

.io-verdict-final td:first-child {
    color: var(--io-text);
    font-size: 15px;
}

/* ============================================
   IC BRIEF — "If You Have 5 Minutes"
   ============================================ */

.io-ic-brief {
    background: var(--io-card);
    border: 1px solid var(--io-border);
    border-left: 4px solid var(--io-accent);
    border-radius: 12px;
    padding: 28px 32px;
}

.io-ic-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.io-ic-list li {
    font-size: 14px;
    line-height: 1.65;
    color: var(--io-text-secondary);
    padding-left: 20px;
    position: relative;
}

.io-ic-list li::before {
    content: "▸";
    position: absolute;
    left: 0;
    color: var(--io-accent);
    font-weight: 700;
}

.io-ic-list li strong {
    color: var(--io-text);
}

/* ============================================
   PLATFORM / PROGRAM DUAL BOX
   ============================================ */

.io-meta-note {
    font-size: 13px;
    color: var(--io-text-muted);
    font-style: italic;
    margin-bottom: 20px;
}

.io-dual-box {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-bottom: 32px;
}

.io-box {
    background: var(--io-card);
    border: 1px solid var(--io-border);
    border-radius: 10px;
    padding: 24px;
}

.io-box-title {
    font-size: 14px;
    font-weight: 700;
    color: var(--io-text);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--io-border);
}

.io-box-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.io-box-list li {
    font-size: 13px;
    color: var(--io-text-secondary);
    padding: 6px 0 6px 16px;
    position: relative;
    line-height: 1.5;
}

.io-box-list li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--io-accent);
}

/* ============================================
   EXPOSURE TABLE
   ============================================ */

.io-exposure-table th:last-child,
.io-exposure-table td:last-child {
    text-align: center;
    width: 90px;
}

.io-exposure-table td:nth-child(3) {
    color: var(--io-amber);
    font-weight: 500;
}

/* ============================================
   METHODOLOGY
   ============================================ */

.io-methodology-subtitle {
    font-size: 13px;
    color: var(--io-text-muted);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 20px;
}

.io-methodology {
    margin-top: 40px;
    padding-top: 32px;
    border-top: 1px solid var(--io-border);
}

.io-methodology-table td:nth-child(2) {
    text-align: center;
    font-weight: 700;
    color: var(--io-accent);
    width: 70px;
}

.io-methodology-meta {
    margin-top: 16px;
    font-size: 12px;
    color: var(--io-text-muted);
    line-height: 1.8;
}

.io-disclaimer {
    margin-top: 12px;
    font-size: 12px;
    font-style: italic;
    color: var(--io-text-muted);
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--io-border);
    border-radius: 6px;
    line-height: 1.6;
}

/* ============================================
   FOOTER
   ============================================ */

.io-footer {
    border-top: 1px solid var(--io-border);
    background: var(--io-surface);
}

.io-footer-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 20px 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 12px;
    color: var(--io-text-muted);
}

.io-footer-center {
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    font-size: 10px;
}

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 900px) {
    .io-header-inner {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
    .io-highlight-bar,
    .io-metrics-grid,
    .io-risk-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .io-settlement-facts,
    .io-gov-grid,
    .io-dual-box {
        grid-template-columns: 1fr;
    }
    .io-readiness-banner {
        flex-direction: column;
        text-align: center;
    }
    .io-nav {
        flex-wrap: wrap;
        justify-content: center;
    }
    .io-nav-full {
        margin-left: 0;
    }
}

@media (max-width: 600px) {
    .io-highlight-bar,
    .io-metrics-grid,
    .io-risk-grid {
        grid-template-columns: 1fr;
    }
    .io-footer-inner {
        flex-direction: column;
        gap: 8px;
        text-align: center;
    }
}

/* ============================================
   PRINT
   ============================================ */

@media print {
    body { background: #fff; color: #1a1a1a; }
    .io-header { position: static; }
    .io-nav { display: none; }
    .io-section { page-break-inside: avoid; }
    .io-card, .io-metric, .io-highlight, .io-fact,
    .io-gov-card, .io-risk-card, .io-readiness-banner,
    .io-arch-layer, .io-box, .io-ic-brief {
        background: #f8f9fa;
        border-color: #ddd;
    }
    .io-text, .io-metric-value, .io-risk-metric,
    .io-gov-threshold, .io-highlight-value {
        color: #1a1a1a;
    }
}