/* =========================================================
   BLOG.CSS — NIRVANA AGENCY
   DENSITY PRINCIPLE · TEXTBOOK EDITION
   SINGLE COLUMN · LANDSCAPE · FULL PAGE NARRATIVE
   PURE NAVY + WHITE · PREMIUM · NO WASTE
========================================================= */

:root {
    /* ——— Navy Blue Palette ——— */
    --navy-950: #0a1420;
    --navy-900: #0a1929;
    --navy-850: #0f1f32;
    --navy-800: #1a2c3e;
    --navy-750: #1f3347;
    --navy-700: #2a3f54;
    --navy-600: #3a526a;
    --navy-500: #4a6580;
    --navy-400: #5a7895;
    --navy-300: #94a3b8;
    --navy-200: #cbd5e1;
    --navy-100: #e2e8f0;

    /* ——— White Palette ——— */
    --white-100: #ffffff;
    --white-200: #fafcff;
    --white-300: #f5f9ff;
    --white-400: #eef3fc;
    --white-500: #e6ecf5;

    /* ——— Blue Accent ——— */
    --blue-500: #3b7bff;
    --blue-600: #2a5fd9;
    --blue-50: rgba(59, 123, 255, 0.04);
    --blue-100: rgba(59, 123, 255, 0.08);
    --blue-200: rgba(59, 123, 255, 0.12);
    --blue-300: rgba(59, 123, 255, 0.2);

    /* ——— Text ——— */
    --text-primary: var(--navy-900);
    --text-secondary: var(--navy-800);
    --text-tertiary: var(--navy-600);
    --text-muted: var(--navy-500);
    --text-white: #ffffff;
    --text-white-muted: rgba(255, 255, 255, 0.85);
    --text-white-dim: rgba(255, 255, 255, 0.65);

    /* ——— Spacing · DENSE ——— */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;

    /* ——— Shadows ——— */
    --shadow-sm: 0 4px 12px rgba(10, 25, 41, 0.04);
    --shadow-md: 0 8px 20px rgba(10, 25, 41, 0.06);
    --shadow-lg: 0 12px 28px rgba(10, 25, 41, 0.08);
    --shadow-xl: 0 20px 36px rgba(10, 25, 41, 0.12);
    --shadow-2xl: 0 24px 48px rgba(10, 25, 41, 0.16);

    /* ——— Radius ——— */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 20px;
    --radius-3xl: 28px;
    --radius-full: 9999px;

    /* ——— Typography ——— */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
    --ease-out: cubic-bezier(0.165, 0.84, 0.44, 1);
    --ease-in-out: cubic-bezier(0.645, 0.045, 0.355, 1);
    --transition-fast: 0.2s var(--ease-out);
    --transition-base: 0.3s var(--ease-out);
    --transition-slow: 0.5s var(--ease-out);

    /* ——— Container ——— */
    --container-width: 1200px;
    --container-wide: 1100px;
    --container-narrow: 760px;
}

/* ==================== RESET ==================== */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

body {
    font-family: var(--font-sans);
    color: var(--text-primary);
    background: var(--white-200);
    line-height: 1.65;
    font-weight: 400;
    overflow-x: hidden;
}

/* ==================== CONTAINER ==================== */
.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--space-8);
}

.container--wide {
    max-width: var(--container-wide);
    padding: 0 var(--space-6);
}

.container--narrow {
    max-width: var(--container-narrow);
}

/* ==================== SECTION STYLES — TEXTBOOK DENSITY ==================== */
.section-white {
    background: var(--white-100);
    padding: var(--space-16) 0;
}

.section-navy {
    background: var(--navy-900);
    padding: var(--space-16) 0;
    position: relative;
    overflow: hidden;
}

.section-light {
    background: var(--white-200);
    padding: var(--space-16) 0;
}

.section--textbook {
    padding: 3.5rem 0;
}

.section--textbook-cta {
    padding: 3rem 0;
}

/* ==================== TYPOGRAPHY — PREMIUM, DENSE ==================== */
h1, h2, h3, h4, h5 {
    font-weight: 650;
    line-height: 1.15;
    letter-spacing: -0.018em;
    color: var(--navy-900);
}

h1 {
    font-size: 3.5rem;
    margin-bottom: var(--space-4);
    font-weight: 700;
    letter-spacing: -0.02em;
}

h2 {
    font-size: 2.5rem;
    margin-bottom: var(--space-4);
    font-weight: 650;
}

h3 {
    font-size: 1.75rem;
    margin-bottom: var(--space-3);
    font-weight: 600;
}

h4 {
    font-size: 1.25rem;
    margin-bottom: var(--space-2);
    font-weight: 600;
}

.text-white {
    color: var(--text-white);
}

.text-white h1,
.text-white h2,
.text-white h3,
.text-white h4 {
    color: var(--text-white);
}

.text-center {
    text-align: center;
}

/* ——— Title master (landscape massive) ——— */
.title-master {
    font-size: 4rem;
    font-weight: 750;
    line-height: 1.05;
    letter-spacing: -0.025em;
    color: var(--navy-900);
    margin-bottom: 0.5rem;
}

.subtitle-master {
    font-size: 1.5rem;
    font-weight: 450;
    color: var(--navy-700);
    margin-bottom: 1.5rem;
    line-height: 1.4;
}

.display-medium {
    font-size: 2.2rem;
    font-weight: 650;
    line-height: 1.2;
    letter-spacing: -0.015em;
}

.display-regular {
    font-size: 2.2rem;
    font-weight: 600;
    line-height: 1.2;
}

/* ==================== PARAGRAPH STYLES — TEXTBOOK ==================== */
.paragraph-lead {
    font-size: 1.35rem;
    font-weight: 450;
    color: var(--navy-800);
    line-height: 1.6;
    margin-bottom: var(--space-5);
}

.paragraph-normal {
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-5);
}

.paragraph-large {
    font-size: 1.2rem;
    color: var(--text-secondary);
    line-height: 1.65;
    margin-bottom: var(--space-6);
}

.paragraph-small {
    font-size: 0.95rem;
    color: var(--text-tertiary);
    line-height: 1.6;
    margin-bottom: var(--space-4);
}

.paragraph-emphasis {
    font-size: 1.2rem;
    font-weight: 500;
    color: var(--navy-800);
    padding: var(--space-5);
    background: var(--white-200);
    border-left: 5px solid var(--blue-500);
    border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
    margin: var(--space-6) 0;
}

.paragraph-white {
    color: var(--text-white-muted);
    font-size: 1.05rem;
    line-height: 1.7;
    margin-bottom: var(--space-5);
}

.paragraph-white-large {
    color: var(--text-white);
    font-size: 1.25rem;
    font-weight: 500;
    line-height: 1.6;
    margin-bottom: var(--space-6);
}

.paragraph-white.forensic {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.05rem;
}

.paragraph-large-dark {
    color: var(--navy-700);
    font-size: 1.25rem;
    line-height: 1.6;
}

.textbook-body {
    font-size: 1.05rem;
    line-height: 1.65;
    color: var(--navy-800);
    margin-bottom: 1rem;
}

.textbook-body-large {
    font-size: 1.12rem;
    line-height: 1.7;
    color: var(--navy-800);
}

.abstract-lead {
    font-size: 1.18rem;
    line-height: 1.65;
    color: var(--navy-800);
    background: var(--white-200);
    padding: 1.5rem;
    border-left: 5px solid var(--blue-500);
    border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
    font-weight: 400;
}

.highlight-blue {
    background: var(--blue-200);
    padding: 0.1rem 0.3rem;
    font-weight: 550;
    color: var(--navy-900);
    border-radius: var(--radius-sm);
}

.text-highlight-bold {
    background: var(--blue-100);
    padding: 0.1rem 0.4rem;
    font-weight: 650;
    color: var(--navy-900);
    border-radius: var(--radius-sm);
}

.emphasis-statement {
    font-size: 1.6rem;
    font-weight: 650;
    color: var(--text-white);
    line-height: 1.2;
    margin: 1rem 0 0.5rem;
}

/* ==================== META, BADGES, EYEBROWS ==================== */
.meta-line {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-4);
    color: var(--text-tertiary);
    font-size: 0.8rem;
    letter-spacing: 0.02em;
}

.meta-category {
    font-weight: 650;
    text-transform: uppercase;
    letter-spacing: 0.18em;
    font-size: 0.7rem;
    color: var(--blue-600);
}

.meta-category-large {
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.22em;
    font-size: 0.8rem;
    color: var(--navy-600);
}

.meta-date-large {
    font-size: 0.8rem;
    color: var(--navy-500);
    font-weight: 450;
}

.badge-light {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: rgba(255, 255, 255, 0.75);
    background: rgba(255, 255, 255, 0.05);
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-full);
    border: 1px solid rgba(255, 255, 255, 0.15);
    margin-bottom: var(--space-4);
}

.badge-light-large {
    font-size: 0.75rem;
    padding: var(--space-2) var(--space-4);
    letter-spacing: 0.25em;
}

.badge-blue {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--blue-600);
    background: var(--blue-50);
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-full);
    border: 1px solid var(--blue-100);
    margin-bottom: var(--space-4);
}

.badge-navy {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--navy-700);
    background: var(--navy-100);
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-full);
    border: 1px solid var(--navy-200);
    margin-bottom: var(--space-4);
}

.eyebrow {
    display: block;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--navy-500);
    margin-bottom: var(--space-3);
}

.eyebrow-large {
    font-size: 0.85rem;
    letter-spacing: 0.3em;
    color: var(--navy-500);
    margin-bottom: var(--space-2);
    display: block;
}

.eyebrow-massive {
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.4em;
    color: var(--blue-600);
    text-transform: uppercase;
    display: block;
    margin-bottom: var(--space-3);
}

.eyebrow-invariant {
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.45em;
    color: var(--navy-800);
    text-transform: uppercase;
}

/* ==================== AUTHOR ==================== */
.author-row {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    margin-bottom: var(--space-6);
}

.author-panel {
    display: flex;
    align-items: center;
    gap: 1.2rem;
    margin-bottom: 2rem;
}

.author-info {
    display: flex;
    flex-direction: column;
}

.author-info strong {
    font-size: 1rem;
    color: var(--navy-800);
    font-weight: 650;
}

.author-info span {
    font-size: 0.8rem;
    color: var(--text-tertiary);
}

.author-credentials strong {
    font-size: 1.1rem;
    color: var(--navy-800);
}

.author-credentials span {
    font-size: 0.85rem;
    color: var(--navy-600);
}

/* ==================== STATISTICS — DENSE ==================== */
.stat-evidence-grid {
    display: flex;
    gap: 2rem;
    margin: 2.5rem 0;
}

.stat-pill-large {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-full);
    padding: 1.2rem 1.8rem;
    display: flex;
    align-items: center;
    gap: 1.2rem;
    transition: var(--transition-base);
}

.stat-pill-large:hover {
    background: rgba(59, 123, 255, 0.12);
    border-color: var(--blue-500);
    transform: translateY(-4px);
}

.stat-number-hero {
    font-size: 2.8rem;
    font-weight: 700;
    color: var(--text-white);
    line-height: 1;
}

.stat-label-group {
    font-size: 0.7rem;
    color: var(--text-white-dim);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    line-height: 1.4;
}

.stat-callout {
    display: inline-flex;
    align-items: baseline;
    background: var(--blue-50);
    padding: 0.6rem 1.2rem;
    border-radius: var(--radius-full);
    margin: 0.5rem 0;
}

.callout-metric {
    font-size: 2rem;
    font-weight: 700;
    color: var(--blue-600);
    margin-right: 0.6rem;
}

.stat-triptych {
    display: flex;
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.triptych-item {
    background: rgba(255, 255, 255, 0.05);
    padding: 0.8rem 1.2rem;
    border-radius: var(--radius-lg);
    text-align: center;
    flex: 1;
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.stat-hero {
    display: block;
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-white);
    line-height: 1;
    margin-bottom: 0.2rem;
}

.stat-mega {
    display: block;
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-white);
    line-height: 1;
}

.stat-label-white {
    font-size: 0.7rem;
    color: var(--text-white-dim);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

/* ==================== DENSITY DIAGRAM ==================== */
.density-visualization {
    margin-top: 2rem;
    background: rgba(0, 0, 0, 0.2);
    padding: 1.8rem;
    border-radius: var(--radius-2xl);
    border: 1px solid rgba(255, 255, 255, 0.06);
}

.diagram-caption {
    color: var(--text-white-muted);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 1rem;
}

.diagram-grid {
    display: flex;
    gap: 2.5rem;
    margin-top: 0.5rem;
}

.diagram-panel {
    flex: 1;
}

.diagram-title {
    font-weight: 600;
    color: var(--text-white);
    margin-bottom: 0.8rem;
    font-size: 0.9rem;
}

.diagram-note {
    color: var(--text-white-dim);
    font-size: 0.75rem;
    margin-top: 0.5rem;
    font-style: italic;
}

/* ==================== GRAPH CARDS — TEXTBOOK ==================== */
.graph-card-textbook {
    background: var(--white-100);
    border-radius: var(--radius-2xl);
    padding: var(--space-6);
    border: 1px solid var(--white-400);
    box-shadow: var(--shadow-md);
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
}

.graph-card-navy {
    background: rgba(255, 255, 255, 0.04);
    border-radius: var(--radius-2xl);
    padding: var(--space-6);
    border: 1px solid rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(4px);
}

.graph-header-heavy {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-4);
}

.graph-title-large {
    font-weight: 650;
    color: var(--navy-800);
    font-size: 1rem;
}

.graph-title-white {
    font-weight: 650;
    color: var(--text-white);
    font-size: 1rem;
}

.graph-period-white {
    font-size: 0.7rem;
    color: var(--text-white-dim);
    text-transform: uppercase;
}

.legend-grid-compact {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-4);
    margin-top: var(--space-3);
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.dot-navy {
    display: inline-block;
    width: 10px;
    height: 10px;
    background: var(--navy-900);
    border-radius: 50%;
    margin-right: 6px;
}

.dot-dark {
    background: var(--navy-800);
}

.dot-darker {
    background: var(--navy-700);
}

.dot-deep {
    background: var(--navy-600);
}

.graph-interpretation {
    font-size: 0.8rem;
    color: var(--text-tertiary);
    margin-top: var(--space-3);
    padding-top: var(--space-2);
    border-top: 1px dashed var(--white-400);
    font-style: italic;
}

/* ==================== TIMELINE — TEXTBOOK ==================== */
.timeline-textbook {
    margin-top: 1.5rem;
}

.timeline-event {
    display: flex;
    margin-bottom: 1.2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.timeline-event:last-child {
    border-bottom: none;
}

.event-year {
    min-width: 80px;
    font-weight: 700;
    color: var(--blue-500);
    font-size: 1rem;
}

.event-desc {
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.95rem;
    line-height: 1.6;
}

.event-desc strong {
    color: var(--text-white);
    font-weight: 650;
}

/* ==================== STRATEGY NODES ==================== */
.strategy-taxonomy {
    margin-top: 0.5rem;
}

.strategy-node {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--white-400);
}

.strategy-node:last-child {
    border-bottom: none;
}

.node-num {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--navy-400);
    min-width: 55px;
    line-height: 1;
}

.node-content h4 {
    margin-bottom: 0.2rem;
    font-size: 1.1rem;
    color: var(--navy-800);
}

.node-content p {
    font-size: 0.95rem;
    color: var(--navy-600);
    line-height: 1.6;
}

/* ==================== LESSON CARDS ==================== */
.lesson-card-textbook {
    background: rgba(255, 255, 255, 0.06);
    border-radius: var(--radius-xl);
    padding: 1.5rem;
    border-left: 6px solid var(--blue-500);
    margin-top: 1.8rem;
    transition: var(--transition-base);
}

.lesson-card-light {
    background: var(--white-200);
    border-radius: var(--radius-xl);
    padding: 1.5rem;
    border-left: 6px solid var(--blue-500);
    margin-top: 1.5rem;
}

.lesson-tag-large {
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    color: var(--blue-500);
    text-transform: uppercase;
    display: block;
    margin-bottom: 0.6rem;
}

.lesson-tag-navy {
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    color: var(--navy-700);
    text-transform: uppercase;
    display: block;
    margin-bottom: 0.6rem;
}

.lesson-text-large {
    font-size: 1.1rem;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: 0;
}

.lesson-text-dark {
    font-size: 1rem;
    line-height: 1.6;
    color: var(--navy-800);
    margin-bottom: 0;
}

.underline-blue {
    border-bottom: 2px solid var(--blue-500);
    padding-bottom: 0.1rem;
    font-weight: 600;
}

/* ==================== COMPARISON TABLE ==================== */
.comparison-table {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin: 2rem 0;
}

.compare-card-wide {
    background: var(--white-100);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--white-400);
    transition: var(--transition-base);
}

.compare-card-wide:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-2xl);
    border-color: var(--navy-400);
}

.compare-header-dark {
    background: var(--navy-900);
    color: var(--text-white);
    padding: 1.2rem 1.8rem;
    font-weight: 700;
    font-size: 1.3rem;
    letter-spacing: -0.01em;
}

.compare-header-accent {
    background: var(--blue-500);
    color: var(--text-white);
    padding: 1.2rem 1.8rem;
    font-weight: 700;
    font-size: 1.3rem;
    letter-spacing: -0.01em;
}

.compare-body-grid {
    padding: 1.5rem;
}

.compare-row {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    padding: 0.9rem 0;
    border-bottom: 1px solid var(--white-400);
}

.compare-row:last-child {
    border-bottom: none;
}

.compare-attr {
    color: var(--navy-600);
    font-size: 0.9rem;
    font-weight: 500;
}

.compare-data {
    font-weight: 600;
    color: var(--navy-800);
    font-size: 0.95rem;
}

.compare-data-highlight {
    font-weight: 700;
    color: var(--blue-600);
    font-size: 1rem;
}

/* ==================== LAWS GRID ==================== */
.laws-grid-textbook {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin: 2.5rem 0;
}

.law-card {
    background: var(--white-100);
    border: 1px solid var(--white-400);
    border-radius: var(--radius-2xl);
    padding: 2rem 1.8rem;
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
}

.law-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--blue-500);
}

.law-num {
    font-size: 2.8rem;
    font-weight: 750;
    color: var(--navy-200);
    margin-bottom: 1rem;
    line-height: 1;
    transition: color 0.2s;
}

.law-card:hover .law-num {
    color: var(--blue-500);
}

.law-text {
    color: var(--navy-700);
    font-size: 0.95rem;
    line-height: 1.65;
}

.law-glow {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 50% 0%, rgba(59, 123, 255, 0.02), transparent 70%);
    opacity: 0;
    transition: opacity var(--transition-base);
    pointer-events: none;
}

.law-card:hover .law-glow {
    opacity: 1;
}

/* ==================== INVARIANT CALLOUT ==================== */
.invariant-callout {
    text-align: center;
    margin: 3rem 0 1rem;
    padding: 2rem;
    background: var(--white-300);
    border-radius: var(--radius-2xl);
    border: 1px solid var(--white-400);
}

.invariant-text {
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--navy-800);
    max-width: 80%;
    margin: 0.8rem auto 0;
    line-height: 1.5;
}

/* ==================== COLOPHON ==================== */
.colophon {
    text-align: center;
    font-style: italic;
    color: var(--navy-500);
    padding-top: 2rem;
    border-top: 1px solid var(--white-400);
    margin-top: 1.5rem;
    font-size: 0.9rem;
}

/* ==================== CTA ==================== */
.cta-block {
    text-align: center;
    max-width: 650px;
    margin: 0 auto;
}

.cta-title {
    font-size: 1.8rem;
    font-weight: 650;
    margin-bottom: 0.8rem;
    color: var(--text-white);
}

.cta-text {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    color: var(--text-white-muted);
}

.cta-button-massive {
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
    padding: 0.8rem 2.5rem;
    background: var(--blue-500);
    color: var(--text-white);
    border-radius: var(--radius-full);
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition-base);
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.cta-button-massive:hover {
    background: var(--blue-600);
    transform: translateY(-4px);
    box-shadow: 0 12px 28px rgba(42, 95, 217, 0.35);
}

.cta-button-massive svg {
    transition: transform 0.2s;
}

.cta-button-massive:hover svg {
    transform: translateX(6px);
}

/* ==================== STATS FOOTER — TEXTBOOK ==================== */
.stats-footer-textbook {
    display: flex;
    justify-content: space-between;
    margin-top: 1.5rem;
    padding-top: 1.2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.stats-footer-light {
    display: flex;
    justify-content: space-between;
    margin-top: 1.2rem;
    padding-top: 1.2rem;
    border-top: 1px solid var(--white-400);
}

/* ==================== REVEAL ANIMATIONS ==================== */
.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ==================== CHART INTERACTIONS ==================== */
.chart-segment,
.chart-bar,
.chart-point {
    transition: all var(--transition-fast);
    cursor: pointer;
}

.chart-segment:hover {
    stroke: var(--blue-500) !important;
    stroke-width: 24;
}

.chart-bar:hover {
    fill: var(--blue-500) !important;
    transform: scale(1.02);
    transform-origin: bottom;
}

.chart-point:hover {
    r: 7;
    fill: var(--blue-500) !important;
}

/* ==================== RESPONSIVE — LANDSCAPE ADAPT ==================== */
@media (max-width: 1000px) {
    :root {
        --container-wide: 95%;
    }
    
    .title-master {
        font-size: 3.2rem;
    }
    
    .stat-evidence-grid {
        flex-direction: column;
        gap: 1rem;
    }
    
    .diagram-grid {
        flex-direction: column;
    }
    
    .comparison-table {
        grid-template-columns: 1fr;
    }
    
    .laws-grid-textbook {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .section--textbook {
        padding: 2.5rem 0;
    }
    
    .container--wide {
        padding: 0 var(--space-5);
    }
    
    .title-master {
        font-size: 2.5rem;
    }
    
    .subtitle-master {
        font-size: 1.2rem;
    }
    
    .meta-row-textbook {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .timeline-event {
        flex-direction: column;
    }
    
    .event-year {
        margin-bottom: 0.3rem;
    }
    
    .strategy-node {
        flex-direction: column;
        gap: 0.3rem;
    }
    
    .node-num {
        min-width: auto;
    }
    
    .stat-triptych {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .title-master {
        font-size: 2rem;
    }
    
    .stat-pill-large {
        flex-direction: column;
        text-align: center;
        padding: 1rem;
    }
    
    .abstract-lead {
        font-size: 1rem;
        padding: 1.2rem;
    }
    
    .cta-title {
        font-size: 1.5rem;
    }
}

/* ==================== UTILITIES ==================== */
.text-white-bold {
    color: var(--text-white);
    font-weight: 700;
}

.quote-block-compact {
    display: flex;
    align-items: flex-start;
    gap: 0.8rem;
    padding: 1rem;
    background: var(--blue-50);
    border-left: 4px solid var(--blue-500);
    border-radius: var(--radius-md);
    margin: 1.2rem 0;
}

.quote-text {
    font-size: 0.95rem;
    color: var(--navy-700);
    font-style: italic;
    line-height: 1.6;
}

/* ==================== PRESERVE ORIGINAL HOVERS ==================== */
.lesson-card-textbook:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateX(6px);
}

.lesson-card-light:hover {
    background: var(--white-300);
}

.timeline-event:hover .event-year {
    color: var(--blue-400);
}

.strategy-node:hover .node-num {
    color: var(--blue-500);
    transform: scale(1.05);
}

/* ==================== END ==================== */