/* ==========================================================================
   Diffusion Economics - Professional Economist Aesthetic
   ========================================================================== */

:root {
    /* Color Palette - Academic/Economist inspired */
    --color-ink: #1a1a2e;
    --color-ink-light: #2d2d44;
    --color-paper: #faf9f7;
    --color-paper-warm: #f5f3ef;
    --color-accent: #c41e3a;
    --color-accent-dark: #9a1830;
    --color-accent-light: #e85a6f;
    --color-gold: #b8860b;
    --color-gold-light: #daa520;
    --color-slate: #4a5568;
    --color-slate-light: #718096;
    --color-border: #e2e0dc;
    --color-border-dark: #c9c5be;
    
    /* Typography */
    --font-serif: 'Cormorant Garamond', Georgia, 'Times New Roman', serif;
    --font-sans: 'Source Sans 3', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    /* Spacing */
    --section-padding: 6rem;
    --container-max: 1200px;
    --container-narrow: 900px;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-medium: 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: var(--font-sans);
    font-size: 17px;
    line-height: 1.7;
    color: var(--color-ink);
    background: var(--color-paper);
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-serif);
    font-weight: 600;
    line-height: 1.25;
    margin: 0;
}

h1 { font-size: clamp(2.5rem, 6vw, 4rem); }
h2 { font-size: clamp(1.875rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.375rem, 3vw, 1.75rem); }
h4 { font-size: 1.25rem; }

p {
    margin: 0 0 1rem;
}

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-accent-dark);
}

img {
    max-width: 100%;
    height: auto;
}

ul, ol {
    padding-left: 1.5rem;
    margin: 0 0 1rem;
}

li {
    margin-bottom: 0.5rem;
}

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 2rem;
}

/* Navigation */
.main-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(250, 249, 247, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
}

.nav-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-family: var(--font-serif);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-ink);
}

.brand-icon {
    font-size: 1.75rem;
    color: var(--color-accent);
    font-weight: 400;
}

.nav-links {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 2.5rem;
}

.nav-links a {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-slate);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-accent);
    transition: width var(--transition-medium);
}

.nav-links a:hover {
    color: var(--color-ink);
}

.nav-links a:hover::after {
    width: 100%;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding: 6rem 2rem;
    background: linear-gradient(135deg, var(--color-ink) 0%, #16213e 50%, #1a1a2e 100%);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 80%, rgba(196, 30, 58, 0.15) 0%, transparent 40%),
        radial-gradient(circle at 80% 20%, rgba(184, 134, 11, 0.1) 0%, transparent 40%);
    pointer-events: none;
}

.hero-content {
    max-width: var(--container-max);
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.hero-eyebrow {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--color-gold);
    margin-bottom: 1.5rem;
}

.hero h1 {
    color: var(--color-paper);
    margin-bottom: 1.5rem;
    max-width: 800px;
}

.hero h1 em {
    font-style: normal;
    color: var(--color-accent-light);
    position: relative;
}

.hero h1 em::after {
    content: '';
    position: absolute;
    bottom: 0.1em;
    left: 0;
    right: 0;
    height: 0.15em;
    background: var(--color-accent);
    opacity: 0.4;
}

.hero-subtitle {
    font-family: var(--font-serif);
    font-size: clamp(1.25rem, 2.5vw, 1.5rem);
    color: rgba(250, 249, 247, 0.8);
    max-width: 600px;
    margin-bottom: 3rem;
    font-weight: 400;
}

.hero-stats {
    display: flex;
    gap: 3rem;
    flex-wrap: wrap;
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-family: var(--font-serif);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-paper);
    line-height: 1;
}

.stat-label {
    font-size: 0.8rem;
    color: rgba(250, 249, 247, 0.6);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: 0.5rem;
    max-width: 180px;
}

.hero-visual {
    position: absolute;
    right: -10%;
    top: 50%;
    transform: translateY(-50%);
    width: 50%;
    height: 60%;
    opacity: 0.15;
    pointer-events: none;
}

.diffusion-wave {
    width: 100%;
    height: 100%;
    background: repeating-radial-gradient(
        circle at 0% 50%,
        transparent 0,
        transparent 20px,
        rgba(255,255,255,0.1) 20px,
        rgba(255,255,255,0.1) 40px
    );
    animation: wave-expand 15s ease-in-out infinite;
}

@keyframes wave-expand {
    0%, 100% { transform: scale(1); opacity: 0.15; }
    50% { transform: scale(1.1); opacity: 0.25; }
}

/* Sections */
.section {
    padding: var(--section-padding) 0;
}

.section-header {
    margin-bottom: 4rem;
    max-width: var(--container-narrow);
}

.section-number {
    display: inline-block;
    font-family: var(--font-serif);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-accent);
    margin-bottom: 0.75rem;
    padding: 0.25rem 0.75rem;
    background: rgba(196, 30, 58, 0.08);
    border-radius: 2px;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--color-slate);
    margin-top: 1rem;
    max-width: 600px;
}

/* Introduction Section */
.intro-section {
    background: var(--color-paper-warm);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.intro-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    align-items: start;
}

.intro-text h2 {
    margin-bottom: 1.5rem;
}

.intro-text .lead {
    font-size: 1.25rem;
    line-height: 1.8;
    color: var(--color-ink-light);
    margin-bottom: 1.5rem;
}

.intro-sidebar blockquote {
    margin: 0;
    padding: 2rem;
    background: var(--color-paper);
    border-left: 4px solid var(--color-accent);
    font-family: var(--font-serif);
    font-size: 1.25rem;
    font-style: italic;
    color: var(--color-ink-light);
    line-height: 1.6;
}

.intro-sidebar cite {
    display: block;
    margin-top: 1rem;
    font-size: 0.875rem;
    font-style: normal;
    color: var(--color-slate);
}

/* Theory Section */
.theory-section {
    background: var(--color-paper);
}

.theory-timeline {
    position: relative;
    padding-left: 3rem;
}

.theory-timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--color-accent) 0%, var(--color-border) 100%);
}

.timeline-item {
    position: relative;
    padding-bottom: 3rem;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -3rem;
    top: 0.35rem;
    width: 12px;
    height: 12px;
    background: var(--color-paper);
    border: 3px solid var(--color-accent);
    border-radius: 50%;
    transform: translateX(-50%);
}

.timeline-year {
    font-family: var(--font-serif);
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-accent);
    margin-bottom: 0.5rem;
}

.timeline-content h3 {
    margin-bottom: 1rem;
}

.timeline-content p {
    max-width: 700px;
    color: var(--color-slate);
}

.key-concept {
    margin-top: 1rem;
    padding: 1rem 1.25rem;
    background: rgba(196, 30, 58, 0.05);
    border-left: 3px solid var(--color-accent);
    font-size: 0.95rem;
}

.equation {
    margin-top: 1rem;
    padding: 1.25rem;
    background: var(--color-ink);
    border-radius: 4px;
}

.equation code {
    display: block;
    font-size: 1.25rem;
    color: var(--color-gold-light);
    text-align: center;
    margin-bottom: 0.75rem;
}

.equation-note {
    display: block;
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.6);
    text-align: center;
}

/* Concepts Section */
.concepts-section {
    background: var(--color-ink);
    color: var(--color-paper);
    padding: var(--section-padding) 0;
}

.concepts-section h2 {
    text-align: center;
    margin-bottom: 3rem;
}

.concepts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 2rem;
}

.concept-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 2rem;
    transition: all var(--transition-medium);
}

.concept-card:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-4px);
}

.concept-icon {
    font-size: 2rem;
    color: var(--color-gold);
    margin-bottom: 1rem;
    font-family: var(--font-serif);
}

.concept-card h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.concept-card p {
    font-size: 0.95rem;
    color: rgba(250, 249, 247, 0.75);
    line-height: 1.7;
}

.concept-data {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.85rem;
    color: rgba(250, 249, 247, 0.6);
}

.concept-data .data-point {
    color: var(--color-gold-light);
    font-weight: 600;
}

/* Models Section */
.models-section {
    background: var(--color-paper-warm);
}

.model-block {
    margin-bottom: 4rem;
}

.model-block h3 {
    margin-bottom: 2rem;
}

.model-visual {
    background: var(--color-paper);
    border: 1px solid var(--color-border);
    padding: 2rem;
    margin-bottom: 2rem;
    border-radius: 4px;
}

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

.model-explanation ol, .model-explanation ul {
    color: var(--color-slate);
}

.model-equations {
    margin-top: 4rem;
}

.equations-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.equation-card {
    background: var(--color-paper);
    border: 1px solid var(--color-border);
    padding: 1.5rem;
}

.equation-card h4 {
    font-size: 1rem;
    margin-bottom: 1rem;
}

.equation-display {
    background: var(--color-ink);
    padding: 1rem;
    border-radius: 4px;
    margin-bottom: 1rem;
    text-align: center;
}

.equation-display code {
    color: var(--color-gold-light);
    font-size: 1rem;
}

.equation-card p {
    font-size: 0.875rem;
    color: var(--color-slate);
    margin: 0;
}

/* Data Section */
.data-section {
    background: var(--color-paper);
}

.data-dashboard {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin-bottom: 4rem;
}

.dashboard-card {
    background: var(--color-paper-warm);
    border: 1px solid var(--color-border);
    padding: 2rem;
    border-radius: 4px;
}

.dashboard-card.wide {
    grid-column: span 2;
}

.dashboard-card h3 {
    font-size: 1.125rem;
    margin-bottom: 1.5rem;
}

.dashboard-card canvas {
    width: 100%;
    height: 300px;
}

.chart-note {
    font-size: 0.8rem;
    color: var(--color-slate-light);
    margin-top: 1rem;
    margin-bottom: 0;
}

/* Data Insights */
.data-insights {
    margin-bottom: 4rem;
}

.data-insights h3 {
    margin-bottom: 2rem;
}

.insights-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.insight {
    display: flex;
    gap: 1.5rem;
    padding: 1.5rem;
    background: var(--color-paper-warm);
    border-left: 4px solid var(--color-accent);
}

.insight-stat {
    font-family: var(--font-serif);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-accent);
    white-space: nowrap;
    line-height: 1.2;
}

.insight-text strong {
    display: block;
    font-size: 1rem;
    margin-bottom: 0.5rem;
}

.insight-text p {
    font-size: 0.9rem;
    color: var(--color-slate);
    margin: 0;
}

/* Data Table */
.data-table-section {
    margin-top: 3rem;
}

.data-table-section h3 {
    margin-bottom: 1.5rem;
}

.table-container {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.95rem;
}

.data-table th,
.data-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

.data-table th {
    background: var(--color-ink);
    color: var(--color-paper);
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.data-table tr:hover {
    background: var(--color-paper-warm);
}

.data-table td:first-child {
    font-weight: 600;
}

.data-table td:last-child {
    color: var(--color-accent);
    font-weight: 600;
}

.table-source {
    margin-top: 1rem;
    font-size: 0.8rem;
    color: var(--color-slate-light);
    font-style: italic;
}

/* Case Studies Section */
.cases-section {
    background: var(--color-paper-warm);
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: 2rem;
}

.case-study {
    background: var(--color-paper);
    border: 1px solid var(--color-border);
    overflow: hidden;
}

.case-header {
    padding: 1.5rem 2rem;
    background: var(--color-ink);
    color: var(--color-paper);
}

.case-region {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-gold);
    margin-bottom: 0.5rem;
}

.case-header h3 {
    font-size: 1.375rem;
}

.case-content {
    padding: 2rem;
}

.case-stats {
    display: flex;
    gap: 2rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--color-border);
}

.case-stat {
    display: flex;
    flex-direction: column;
}

.case-stat .value {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-accent);
    line-height: 1.2;
}

.case-stat .label {
    font-size: 0.75rem;
    color: var(--color-slate);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.case-content > p {
    color: var(--color-slate);
    margin-bottom: 1.5rem;
}

.case-impact, .case-lessons {
    margin-bottom: 1.5rem;
}

.case-impact h4, .case-lessons h4 {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-ink);
    margin-bottom: 0.75rem;
}

.case-impact ul {
    margin: 0;
    padding-left: 1.25rem;
}

.case-impact li {
    font-size: 0.9rem;
    color: var(--color-slate);
    margin-bottom: 0.5rem;
}

.case-lessons p {
    font-size: 0.9rem;
    color: var(--color-slate);
    margin: 0;
    padding: 1rem;
    background: var(--color-paper-warm);
    border-left: 3px solid var(--color-gold);
}

/* Barriers Section */
.barriers-section {
    background: var(--color-paper);
}

.barriers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.barrier-category {
    padding: 2rem;
    background: var(--color-paper-warm);
    border: 1px solid var(--color-border);
}

.barrier-category h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.barrier-category ul {
    margin: 0;
    padding-left: 1.25rem;
}

.barrier-category li {
    font-size: 0.95rem;
    color: var(--color-slate);
    margin-bottom: 0.75rem;
}

.barrier-category li strong {
    color: var(--color-ink);
}

.barrier-data {
    margin-top: 1.5rem;
    padding-top: 1rem;
    border-top: 1px solid var(--color-border);
    font-size: 0.85rem;
    color: var(--color-slate);
}

.barrier-data strong {
    color: var(--color-accent);
}

/* Policy Section */
.policy-section {
    background: var(--color-ink);
    color: var(--color-paper);
}

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

.policy-principles {
    margin-bottom: 4rem;
}

.policy-principles h3 {
    margin-bottom: 2rem;
}

.principles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 2rem;
}

.principle {
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.principle-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: var(--color-accent);
    color: var(--color-paper);
    font-family: var(--font-serif);
    font-weight: 700;
    font-size: 1rem;
    margin-bottom: 1rem;
}

.principle h4 {
    font-size: 1rem;
    margin-bottom: 0.75rem;
}

.principle p {
    font-size: 0.9rem;
    color: rgba(250, 249, 247, 0.7);
    margin: 0;
}

/* Policy Tools */
.policy-tools {
    margin-bottom: 4rem;
}

.policy-tools h3 {
    margin-bottom: 2rem;
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
}

.tool-card {
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.tool-card h4 {
    font-size: 1rem;
    color: var(--color-gold-light);
    margin-bottom: 1rem;
}

.tool-card ul {
    margin: 0;
    padding-left: 1.25rem;
}

.tool-card li {
    font-size: 0.9rem;
    color: rgba(250, 249, 247, 0.7);
    margin-bottom: 0.5rem;
}

/* Policy Debates */
.policy-debates h3 {
    margin-bottom: 2rem;
}

.debate-grid {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.debate {
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.03);
    border-left: 4px solid var(--color-accent);
}

.debate h4 {
    font-size: 1.125rem;
    margin-bottom: 0.75rem;
}

.debate p {
    font-size: 0.95rem;
    color: rgba(250, 249, 247, 0.75);
    margin: 0;
}

/* Thinkers Section */
.thinkers-section {
    background: var(--color-paper-warm);
}

.thinkers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 2rem;
}

.thinker-card {
    background: var(--color-paper);
    border: 1px solid var(--color-border);
    padding: 2rem;
    transition: all var(--transition-medium);
}

.thinker-card:hover {
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
    transform: translateY(-4px);
}

.thinker-info {
    margin-bottom: 1rem;
}

.thinker-info h3 {
    font-size: 1.25rem;
    margin-bottom: 0.25rem;
}

.thinker-affiliation {
    font-size: 0.85rem;
    color: var(--color-slate);
}

.thinker-card > p {
    font-size: 0.95rem;
    color: var(--color-slate);
    margin-bottom: 1rem;
}

.key-work {
    font-size: 0.85rem;
    color: var(--color-ink);
    padding: 0.75rem 1rem;
    background: var(--color-paper-warm);
    border-left: 3px solid var(--color-accent);
    font-style: italic;
}

/* Resources Section */
.resources-section {
    background: var(--color-paper);
    border-top: 1px solid var(--color-border);
}

.resources-section h2 {
    margin-bottom: 3rem;
}

.resources-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.resource-category {
    padding: 2rem;
    background: var(--color-paper-warm);
    border: 1px solid var(--color-border);
}

.resource-category h3 {
    font-size: 1.125rem;
    margin-bottom: 1.5rem;
}

.resource-category ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.resource-category li {
    font-size: 0.95rem;
    color: var(--color-slate);
    margin-bottom: 0.75rem;
    padding-left: 1rem;
    border-left: 2px solid var(--color-border);
}

.resource-category li em {
    color: var(--color-ink);
}

.resource-category a {
    font-weight: 500;
}

/* Footer */
.main-footer {
    background: var(--color-ink);
    color: var(--color-paper);
    padding: 4rem 0;
    border-top: 4px solid var(--color-accent);
}

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

.footer-brand {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.footer-brand .brand-icon {
    color: var(--color-accent);
}

.footer-note {
    font-size: 0.9rem;
    color: rgba(250, 249, 247, 0.6);
    max-width: 600px;
    margin: 0 auto 2rem;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.footer-links a {
    font-size: 0.875rem;
    color: rgba(250, 249, 247, 0.6);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer-links a:hover {
    color: var(--color-paper);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .intro-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .cases-grid {
        grid-template-columns: 1fr;
    }
    
    .data-dashboard {
        grid-template-columns: 1fr;
    }
    
    .dashboard-card.wide {
        grid-column: span 1;
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 4rem;
    }
    
    .nav-links {
        display: none;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 1.5rem;
    }
    
    .hero {
        padding: 5rem 1.5rem;
    }
    
    .concepts-grid {
        grid-template-columns: 1fr;
    }
    
    .case-stats {
        flex-wrap: wrap;
        gap: 1.5rem;
    }
    
    .theory-timeline {
        padding-left: 2rem;
    }
    
    .insight {
        flex-direction: column;
        gap: 1rem;
    }
    
    .data-table {
        font-size: 0.85rem;
    }
    
    .data-table th,
    .data-table td {
        padding: 0.75rem 0.5rem;
    }
}

@media (max-width: 480px) {
    body {
        font-size: 16px;
    }
    
    .container {
        padding: 0 1rem;
    }
    
    .nav-container {
        padding: 0 1rem;
    }
    
    .equations-grid,
    .principles-grid,
    .tools-grid,
    .thinkers-grid {
        grid-template-columns: 1fr;
    }
}

/* Print Styles */
@media print {
    .main-nav,
    .hero-visual {
        display: none;
    }
    
    .hero {
        min-height: auto;
        padding: 2rem;
        background: none;
        color: var(--color-ink);
    }
    
    .hero h1,
    .hero-subtitle,
    .stat-number,
    .stat-label {
        color: var(--color-ink);
    }
    
    .section {
        padding: 2rem 0;
        break-inside: avoid;
    }
}