/* ═══════════════════════════════════════════════════════════
   Grå Arealer Docs — Menon Economics branded styles
   Includes: tokens, sandwich nav, section layout, typography
   ═══════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,400;0,9..40,500;0,9..40,600;1,9..40,400&display=swap');

/* ── Menon Design Tokens ── */
:root {
    --menon-gold: #FFC952;
    --menon-gold-rgb: 255, 201, 86;
    --menon-forest: #052929;
    --menon-forest-rgb: 5, 41, 41;
    --menon-darker-teal: #0B3234;
    --menon-teal-green: #215660;
    --menon-ocean-blue: #3D9ADC;
    --menon-light-blue: #C9DFF9;
    --menon-mint-green: #B1F0D0;

    --menon-page-bg: hsl(180, 8%, 96%);
    --menon-card-bg: hsl(180, 4%, 99%);

    --menon-text-primary: #0A1F1F;
    --menon-text-secondary: hsl(180, 10%, 38%);
    --menon-text-tertiary: hsl(180, 6%, 56%);

    --menon-border: rgba(5, 41, 41, 0.06);
    --menon-border-strong: rgba(5, 41, 41, 0.12);

    --menon-shadow-color: 180deg 20% 30%;
    --menon-shadow-xs:
        0 0 1px hsl(var(--menon-shadow-color) / 0.04),
        0 1px 2px hsl(var(--menon-shadow-color) / 0.05);
    --menon-shadow-sm:
        0 0 1px hsl(var(--menon-shadow-color) / 0.04),
        0 1px 2px hsl(var(--menon-shadow-color) / 0.04),
        0 3px 6px hsl(var(--menon-shadow-color) / 0.03),
        0 6px 12px hsl(var(--menon-shadow-color) / 0.02);
    --menon-shadow-md:
        0 0 1px hsl(var(--menon-shadow-color) / 0.05),
        0 1px 2px hsl(var(--menon-shadow-color) / 0.04),
        0 3px 6px hsl(var(--menon-shadow-color) / 0.04),
        0 6px 12px hsl(var(--menon-shadow-color) / 0.03),
        0 12px 24px hsl(var(--menon-shadow-color) / 0.03);

    --menon-white: #FFFFFF;
    --menon-off-white: #F3F3F3;

    --menon-font-heading: Georgia, 'Times New Roman', serif;
    --menon-font-body: 'DM Sans', -apple-system, 'Helvetica Neue', Helvetica, Arial, sans-serif;
    --menon-font-mono: 'SF Mono', 'Fira Code', Consolas, monospace;
    --menon-font-weight-book: 430;

    --menon-text-h1: clamp(1.8rem, 3vw, 2.4rem);
    --menon-text-h2: clamp(1.4rem, 2vw, 1.8rem);
    --menon-text-h3: 1.25rem;
    --menon-text-body: 1.0625rem;
    --menon-text-small: 0.8125rem;
    --menon-text-caption: 0.6875rem;
    --menon-text-label: 0.6875rem;

    --menon-space-1: 4px;
    --menon-space-2: 8px;
    --menon-space-3: 12px;
    --menon-space-4: 16px;
    --menon-space-5: 20px;
    --menon-space-6: 24px;
    --menon-space-8: 32px;
    --menon-space-10: 40px;
    --menon-space-12: 48px;
    --menon-space-16: 64px;
    --menon-space-24: 96px;

    --menon-radius-xl: 2px;
    --menon-radius-full: 9999px;

    --menon-transition: 150ms ease;
    --menon-transition-fast: 120ms ease;

    --menon-ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --menon-duration-enter: 700ms;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; }

html {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    overflow-x: hidden;
}

body {
    font-family: var(--menon-font-body);
    font-size: var(--menon-text-body);
    font-weight: var(--menon-font-weight-book);
    line-height: 1.6;
    color: var(--menon-text-primary);
    background-color: var(--menon-page-bg);
    margin: 0;
    padding: 0;
}

/* Subtle branded atmosphere */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    background:
        radial-gradient(ellipse 80% 50% at 25% -10%, rgba(5, 41, 41, 0.025) 0%, transparent 70%),
        radial-gradient(ellipse 50% 60% at 85% 110%, rgba(255, 201, 86, 0.015) 0%, transparent 60%);
    pointer-events: none;
    z-index: -1;
}

/* ═══════════════════════════════════════════════════════════
   SANDWICH NAV — three z-levels in root stacking context
   backdrop (z:1) → content (z:5) → glass nav (z:50)
   Both backdrop and nav MUST be direct children of body.
   ═══════════════════════════════════════════════════════════ */

/* Layer 1: Color atmosphere — sticky, BELOW content (z:1) */
.menon-nav-backdrop {
    position: sticky;
    top: var(--menon-space-3);
    z-index: 1;
    height: 52px;
    margin-left: var(--menon-space-6);
    margin-right: var(--menon-space-6);
    margin-bottom: -52px;
    border-radius: var(--menon-radius-xl);
    background:
        radial-gradient(ellipse 40% 150% at 0% 50%, rgba(5, 41, 41, 0.95) 0%, transparent 100%),
        radial-gradient(ellipse 30% 150% at 35% 50%, rgba(33, 86, 96, 0.65) 0%, transparent 100%),
        radial-gradient(ellipse 20% 120% at 62% 50%, rgba(255, 201, 86, 0.18) 0%, transparent 100%),
        radial-gradient(ellipse 30% 150% at 92% 50%, rgba(61, 154, 220, 0.35) 0%, transparent 100%),
        rgba(5, 41, 41, 0.92);
    pointer-events: none;
}

/* Layer 3: Glass nav — sticky, ABOVE content (z:50) */
.menon-nav {
    position: sticky;
    top: var(--menon-space-3);
    z-index: 50;
    margin: 0 var(--menon-space-6) var(--menon-space-4);
    background:
        radial-gradient(ellipse 40% 150% at 0% 50%, rgba(5, 41, 41, 0.35) 0%, transparent 100%),
        radial-gradient(ellipse 30% 150% at 35% 50%, rgba(33, 86, 96, 0.2) 0%, transparent 100%),
        radial-gradient(ellipse 20% 120% at 62% 50%, rgba(255, 201, 86, 0.06) 0%, transparent 100%),
        radial-gradient(ellipse 30% 150% at 92% 50%, rgba(61, 154, 220, 0.12) 0%, transparent 100%),
        rgba(5, 41, 41, 0.55);
    backdrop-filter: saturate(200%) blur(28px);
    -webkit-backdrop-filter: saturate(200%) blur(28px);
    border: 1px solid rgba(255, 255, 255, 0.10);
    border-radius: var(--menon-radius-xl);
    padding: 0 var(--menon-space-8);
    display: flex;
    align-items: center;
    height: 52px;
    gap: var(--menon-space-6);
    font-size: var(--menon-text-small);
    box-shadow:
        0 0 0 0.5px rgba(5, 41, 41, 0.2),
        0 1px 2px rgba(0, 0, 0, 0.10),
        0 4px 12px rgba(5, 41, 41, 0.12),
        0 12px 32px rgba(5, 41, 41, 0.10),
        0 0 60px rgba(5, 41, 41, 0.12),
        0 0 120px rgba(33, 86, 96, 0.10),
        0 0 180px rgba(255, 201, 86, 0.04);
    overflow: hidden;
}

/* Gold gradient accent line at bottom of nav */
.menon-nav::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: var(--menon-space-6);
    right: var(--menon-space-6);
    height: 2px;
    background: linear-gradient(
        90deg,
        var(--menon-forest) 0%,
        var(--menon-teal-green) 30%,
        var(--menon-gold) 60%,
        var(--menon-ocean-blue) 100%
    );
    opacity: 0.6;
    border-radius: 1px;
}

.menon-nav .brand {
    font-family: var(--menon-font-body);
    font-weight: 600;
    font-size: var(--menon-text-body);
    color: #fff;
    letter-spacing: -0.01em;
    white-space: nowrap;
}

.menon-nav a {
    color: rgba(255, 255, 255, 0.7);
    font-weight: 500;
    transition: color var(--menon-transition);
    text-decoration: none;
}
.menon-nav a:hover {
    color: #fff;
    text-decoration: none;
}

.menon-nav__spacer { flex: 1; }

.menon-nav__cta {
    padding: var(--menon-space-2) var(--menon-space-4);
    background: var(--menon-gold);
    color: var(--menon-forest) !important;
    border-radius: var(--menon-radius-xl);
    font-weight: 600;
    font-size: var(--menon-text-small);
    transition: transform var(--menon-transition), background var(--menon-transition), box-shadow var(--menon-transition);
}
.menon-nav__cta:hover {
    background: #ffd46b;
    color: var(--menon-forest) !important;
    box-shadow: 0 0 16px rgba(255, 201, 86, 0.3);
}
.menon-nav__cta:active {
    transform: scale(0.97);
}

/* ── Entrance animation ── */
@keyframes menon-enter {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
}

.menon-enter {
    animation: menon-enter var(--menon-duration-enter) var(--menon-ease-out) both;
    animation-delay: var(--delay, 0ms);
}

@media (prefers-reduced-motion: reduce) {
    .menon-enter {
        animation: none !important;
        opacity: 1 !important;
        transform: none !important;
    }
}

/* ═══════════════════════════════════════════════════════════
   SECTION LAYOUT
   Content sits at z:5 between backdrop (z:1) and nav (z:50).
   ═══════════════════════════════════════════════════════════ */
.menon-section {
    --menon-prose-width: 56ch;
    position: relative;
    z-index: 5;
    max-width: 1200px;
    margin: 0 auto;
    padding: 48px 32px;
}

.menon-section h1,
.menon-section h2,
.menon-section h3,
.menon-section h4,
.menon-section p,
.menon-section .menon-callout,
.menon-section blockquote {
    max-width: var(--menon-prose-width);
}

.menon-section figure,
.menon-section table {
    max-width: none;
}

.menon-section--narrow {
    max-width: 800px;
}

/* Report container — narrow text column for standalone report pages.
   Used by pandoc-generated docs (wrapped via nav_header/nav_footer). */
.menon-report {
    position: relative;
    z-index: 5;
    max-width: 42em;
    margin: 0 auto;
    padding: var(--menon-space-12) var(--menon-space-6);
}

/* ═══════════════════════════════════════════════════════════
   TYPOGRAPHY
   ═══════════════════════════════════════════════════════════ */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--menon-font-heading);
    color: var(--menon-text-primary);
    line-height: 1.15;
    margin-top: 0;
}

h1 {
    font-size: var(--menon-text-h1);
    font-weight: 600;
    letter-spacing: -0.025em;
}

h2 {
    font-size: var(--menon-text-h2);
    font-weight: 600;
    letter-spacing: -0.03em;
    color: var(--menon-teal-green);
    margin-top: 2em;
}

h3 {
    font-size: var(--menon-text-h3);
    font-weight: 600;
    font-family: var(--menon-font-body);
    letter-spacing: -0.01em;
    margin-top: 1.5em;
}

p {
    color: var(--menon-text-primary);
    margin-top: 0;
    margin-bottom: var(--menon-space-4);
}

a {
    color: var(--menon-ocean-blue);
    text-decoration: none;
    transition: color var(--menon-transition);
}
a:hover {
    color: var(--menon-teal-green);
}

strong {
    font-weight: 600;
    color: var(--menon-text-primary);
}

/* ── Lists ── */
ul, ol {
    color: var(--menon-text-secondary);
    padding-left: 1.5em;
}
li {
    margin-bottom: 0.4em;
}

/* ── Blockquote — gold accent ── */
blockquote {
    border-left: 3px solid var(--menon-gold);
    background: rgba(255, 201, 86, 0.05);
    padding: var(--menon-space-5) var(--menon-space-6);
    margin: var(--menon-space-6) 0;
    border-radius: 0 0 0 0;
}
blockquote p {
    color: var(--menon-text-primary);
    margin-bottom: 0;
}

/* ── Horizontal rule ── */
hr {
    border: none;
    height: 1px;
    background: var(--menon-border);
    margin: 2.5em 0;
}

/* ── Code ── */
pre, code {
    font-family: var(--menon-font-mono);
    font-size: var(--menon-text-small);
}
code {
    padding: 2px 6px;
    background: rgba(5, 41, 41, 0.04);
    border-radius: 4px;
}
pre {
    background-color: var(--menon-card-bg);
    border: 1px solid var(--menon-border);
    padding: var(--menon-space-5);
    overflow-x: auto;
}
pre code {
    padding: 0;
    background: none;
}

/* ── Images — break out of narrow container, card-style ── */
img {
    max-width: min(90vw, 56em);
    width: 56em;
    margin-left: 50%;
    transform: translateX(-50%);
    padding: var(--menon-space-4);
    background: var(--menon-card-bg);
    border: 1px solid var(--menon-border);
    box-shadow: var(--menon-shadow-sm);
}

/* ── Figure captions ── */
figcaption, .menon-source {
    font-size: var(--menon-text-caption);
    color: var(--menon-text-tertiary);
    font-style: italic;
    margin-top: var(--menon-space-3);
}

/* ═══════════════════════════════════════════════════════════
   TABLES — Tufte-inspired
   ═══════════════════════════════════════════════════════════ */
table {
    width: 100%;
    border-collapse: collapse;
    border-spacing: 0;
    margin: var(--menon-space-6) 0;
    font-size: var(--menon-text-small);
    font-variant-numeric: lining-nums tabular-nums;
    line-height: 1.5;
}

thead th {
    padding: var(--menon-space-3) var(--menon-space-4);
    text-align: left;
    vertical-align: bottom;
    font-weight: 600;
    font-size: var(--menon-text-caption);
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--menon-text-tertiary);
    border-bottom: 2px solid var(--menon-border-strong);
    white-space: nowrap;
}

td {
    padding: var(--menon-space-3) var(--menon-space-4);
    border-bottom: 1px solid var(--menon-border);
    color: var(--menon-text-secondary);
    vertical-align: middle;
}

tbody tr:last-child td {
    border-bottom: none;
}

tbody tr {
    transition: background var(--menon-transition-fast);
}
tbody tr:hover {
    background-color: rgba(5, 41, 41, 0.02);
}

/* ═══════════════════════════════════════════════════════════
   LANDING PAGE
   ═══════════════════════════════════════════════════════════ */
.landing {
    margin-top: 1em;
}

.landing h1 {
    font-family: var(--menon-font-heading);
    font-size: var(--menon-text-h1);
    letter-spacing: -0.025em;
    margin-bottom: 0.2em;
}

.landing .lead {
    color: var(--menon-text-secondary);
    font-size: 1.05em;
    margin-bottom: 2em;
}

/* ── Doc cards ── */
.doc-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5em;
    margin-bottom: 2em;
}

.doc-card {
    border: 1px solid var(--menon-border-strong);
    border-radius: 0;
    padding: 1.5em;
    text-decoration: none;
    color: inherit;
    background: var(--menon-card-bg);
    box-shadow: var(--menon-shadow-sm);
    position: relative;
    overflow: hidden;
    transition: box-shadow var(--menon-transition), border-color var(--menon-transition);
}

/* Gold top-stripe */
.doc-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--menon-gold), var(--menon-gold) 60%, transparent);
}

.doc-card:hover {
    border-color: var(--menon-teal-green);
    box-shadow: var(--menon-shadow-md);
}

.doc-card h2 {
    font-family: var(--menon-font-heading);
    font-size: 1.2em;
    font-weight: 600;
    letter-spacing: -0.02em;
    margin: 0 0 0.5em;
    color: var(--menon-teal-green);
}

.doc-card p {
    margin: 0;
    color: var(--menon-text-secondary);
    font-size: 0.9em;
}

.back-link {
    color: var(--menon-ocean-blue);
    font-size: 0.9em;
}

/* ═══════════════════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════════════════ */
@media (max-width: 600px) {
    .doc-cards {
        grid-template-columns: 1fr;
    }
    .menon-nav {
        font-size: 0.75rem;
        gap: var(--menon-space-4);
        padding: 0 var(--menon-space-4);
        margin-left: var(--menon-space-3);
        margin-right: var(--menon-space-3);
    }
    .menon-nav-backdrop {
        margin-left: var(--menon-space-3);
        margin-right: var(--menon-space-3);
    }
    .menon-section {
        padding: 32px 16px;
    }
}