/* ===========================
   Variables & Base Styles
   =========================== */

:root {
    --primary-dark: #0a0a0a;
    --primary-color: #1a1a1a;
    --secondary-color: #4a4a4a;
    --accent-color: #065f46;
    --accent-dark: #064e3b;
    --light-bg: #fafafa;
    --border-color: #e5e5e5;
    --text-color: #2d3748;
    --text-light: #64748b;
    --success-color: #059669;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--text-color);
    line-height: 1.7;
    font-size: 17px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: 'Crimson Pro', Georgia, serif;
    font-weight: 600;
    color: var(--primary-color);
    line-height: 1.2;
}

a {
    color: var(--accent-color);
    text-decoration: none;
    transition: all 0.3s ease;
}

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

.emphasis {
    font-weight: 600;
    color: var(--primary-dark);
}

/* ===========================
   Navigation
   =========================== */

.navbar {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
    transition: all 0.3s ease;
}

.navbar-brand {
    font-family: 'Crimson Pro', Georgia, serif;
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--primary-dark) !important;
    letter-spacing: -0.5px;
}

.nav-link {
    color: var(--secondary-color) !important;
    font-weight: 500;
    font-size: 0.95rem;
    padding: 0.5rem 1rem !important;
    transition: all 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-dark) !important;
}

/* ===========================
   Hero Section
   =========================== */

.hero-section {
    min-height: 90vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 10rem 0 6rem 0;
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    border-bottom: 1px solid var(--border-color);
}

.hero-title {
    font-size: 4rem;
    font-weight: 600;
    margin-bottom: 1rem;
    letter-spacing: -2px;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--text-light);
    margin-bottom: 3rem;
    font-weight: 400;
}

.hero-statement {
    max-width: 700px;
    margin: 0 auto 3rem auto;
    font-size: 1.3rem;
    line-height: 1.8;
}

.hero-statement p {
    margin-bottom: 1rem;
}

.hero-statement .emphasis {
    font-size: 1.5rem;
    display: block;
    margin-top: 1.5rem;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-primary {
    background: var(--accent-color);
    border: none;
    padding: 1rem 2rem;
    font-weight: 600;
    border-radius: 8px;
    font-size: 1rem;
}

.btn-primary:hover {
    background: var(--accent-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(37, 99, 235, 0.3);
}

.btn-outline-primary {
    border: 2px solid var(--accent-color);
    color: var(--accent-color);
    padding: 1rem 2rem;
    font-weight: 600;
    border-radius: 8px;
    font-size: 1rem;
}

.btn-outline-primary:hover {
    background: var(--accent-color);
    color: white;
    transform: translateY(-2px);
}

/* ===========================
   Section Styling
   =========================== */

.content-section,
.insight-section,
.framework-section,
.significance-section,
.publications-section,
.implications-section,
.about-section,
.contact-section {
    padding: 6rem 0;
}

.section-title {
    font-size: 3rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.section-intro {
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: 3rem;
}

.bg-light {
    background-color: var(--light-bg) !important;
}

/* ===========================
   Insight Section
   =========================== */

.insight-section {
    background: white;
    border-bottom: 1px solid var(--border-color);
}

.insight-content {
    max-width: 800px;
    margin: 0 auto;
}

.lead-text {
    font-size: 1.2rem;
    line-height: 1.9;
    margin-bottom: 2rem;
    color: var(--text-color);
}

.insight-formula {
    background: var(--light-bg);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 2.5rem;
    margin: 3rem 0;
    text-align: center;
}

.formula-label {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-light);
    margin-bottom: 1.5rem;
    font-weight: 600;
}

.formula {
    font-family: 'Courier New', monospace;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary-dark);
    line-height: 2;
}

.formula-continuation {
    color: var(--accent-color);
    display: block;
    margin-top: 0.5rem;
}

/* ===========================
   Framework Components
   =========================== */

.framework-components {
    margin-top: 4rem;
}

.framework-card {
    background: white;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 3rem;
    margin-bottom: 3rem;
    position: relative;
    transition: all 0.3s ease;
}

.framework-card:hover {
    border-color: var(--accent-color);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
    transform: translateY(-4px);
}

.framework-number {
    position: absolute;
    top: -20px;
    left: 3rem;
    background: var(--accent-color);
    color: white;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.2rem;
}

.framework-card h3 {
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--accent-color);
    margin-bottom: 0.5rem;
    font-weight: 700;
    font-family: 'Inter', sans-serif;
}

.framework-card h4 {
    font-size: 2rem;
    margin-bottom: 2rem;
    color: var(--primary-dark);
}

.framework-question {
    font-size: 1.1rem;
    font-style: italic;
    color: var(--text-light);
    margin-bottom: 1rem;
}

.framework-answer {
    font-size: 1.15rem;
    line-height: 1.8;
    margin-bottom: 2rem;
    color: var(--text-color);
}

.framework-formula-box {
    background: var(--light-bg);
    border-radius: 8px;
    padding: 2rem;
    margin: 2rem 0;
}

.formula-display {
    font-size: 2rem;
    text-align: center;
    margin-bottom: 2rem;
    font-family: 'Crimson Pro', serif;
    color: var(--primary-dark);
}

.formula-fraction {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    vertical-align: middle;
}

.numerator {
    border-bottom: 2px solid var(--primary-dark);
    padding-bottom: 0.3rem;
    margin-bottom: 0.3rem;
}

.denominator {
    padding-top: 0.3rem;
}

.formula-legend {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
    font-size: 0.95rem;
}

.formula-legend div {
    text-align: center;
}

.formula-legend strong {
    color: var(--accent-color);
    font-weight: 700;
}

.framework-law-box {
    background: var(--light-bg);
    border-left: 4px solid var(--accent-color);
    padding: 2rem;
    margin: 2rem 0;
}

.law-statement {
    font-size: 1.2rem;
    line-height: 1.7;
    margin-bottom: 1.5rem;
    font-weight: 500;
}

.law-formula {
    font-size: 1.8rem;
    text-align: center;
    font-weight: 700;
    color: var(--accent-color);
    font-family: 'Crimson Pro', serif;
}

.framework-resolves {
    background: #f0f9ff;
    border-radius: 8px;
    padding: 1.5rem;
    margin: 2rem 0;
}

.framework-resolves strong {
    display: block;
    margin-bottom: 1rem;
    font-size: 1.1rem;
    color: var(--primary-dark);
}

.framework-resolves ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.framework-resolves li {
    padding: 0.5rem 0;
    position: relative;
    padding-left: 1.5rem;
}

.framework-resolves li:before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: 700;
}

.framework-resolves li strong {
    display: inline;
    font-size: inherit;
    color: var(--accent-color);
    margin: 0;
}

.framework-link {
    display: inline-block;
    margin-top: 1.5rem;
    font-weight: 600;
    font-size: 1rem;
    color: var(--accent-color);
}

.framework-link:hover {
    color: var(--accent-dark);
    text-decoration: underline;
}

/* ===========================
   Significance Grid
   =========================== */

.significance-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.significance-item {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 2rem;
}

.significance-item h3 {
    font-size: 1.4rem;
    margin-bottom: 1rem;
    color: var(--primary-dark);
}

.significance-item p {
    line-height: 1.7;
    color: var(--text-color);
}

/* ===========================
   Publications
   =========================== */

.pub-category {
    margin-bottom: 4rem;
}

.pub-category h3 {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    color: var(--primary-dark);
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--border-color);
}

.pub-category-intro {
    font-size: 1rem;
    color: var(--text-light);
    margin-top: -1rem;
    margin-bottom: 1.5rem;
    font-style: italic;
}

.publication-item-major {
    background: white;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 2.5rem;
    margin-bottom: 2.5rem;
    display: flex;
    gap: 2rem;
    transition: all 0.3s ease;
}

.publication-item-major:hover {
    border-color: var(--accent-color);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
}

.pub-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--accent-color);
    min-width: 80px;
    font-family: 'Crimson Pro', serif;
}

.pub-content {
    flex: 1;
}

.pub-content h4 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--primary-dark);
}

.pub-subtitle {
    font-size: 1.1rem;
    color: var(--text-light);
    font-style: italic;
    margin-bottom: 1rem;
}

.pub-description {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-color);
    margin-bottom: 1rem;
}

.pub-meta {
    font-size: 0.95rem;
    color: var(--text-light);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem;
}

.pub-separator {
    color: var(--border-color);
}

.pub-doi,
.pub-link {
    color: var(--accent-color);
    font-weight: 600;
}

.pub-status {
    background: #fef3c7;
    color: #92400e;
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    font-weight: 600;
}

.pub-status-ready {
    background: #d1fae5;
    color: #065f46;
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    font-weight: 600;
}

.pub-status-progress {
    background: #e0e7ff;
    color: #3730a3;
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    font-weight: 600;
}

.publication-item-progress {
    border-left: 3px solid #6366f1;
}

.publication-item {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 2rem;
    margin-bottom: 1.5rem;
}

.publication-item h4 {
    font-size: 1.2rem;
    margin-bottom: 0.75rem;
}

.external-links {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 3rem;
    flex-wrap: wrap;
}

.external-link-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-weight: 600;
    color: var(--primary-dark);
    transition: all 0.3s ease;
}

.external-link-btn:hover {
    border-color: var(--accent-color);
    color: var(--accent-color);
    transform: translateY(-2px);
}

.link-icon {
    font-size: 1.2rem;
}

/* ===========================
   Implications
   =========================== */

.implications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.implication-card {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 2rem;
}

.implication-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: var(--accent-color);
}

.implication-card ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.implication-card li {
    padding: 0.5rem 0;
    line-height: 1.6;
    position: relative;
    padding-left: 1.5rem;
}

.implication-card li:before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: 700;
}

/* ===========================
   About
   =========================== */

.about-content {
    max-width: 700px;
    margin: 0 auto;
}

.lead-paragraph {
    font-size: 1.3rem;
    line-height: 1.8;
    margin-bottom: 2rem;
    color: var(--primary-dark);
    font-weight: 400;
}

.about-content p {
    font-size: 1.05rem;
    line-height: 1.9;
    margin-bottom: 1.5rem;
}

.about-credentials {
    background: var(--light-bg);
    border-radius: 8px;
    padding: 2rem;
    margin-top: 3rem;
}

.about-credentials h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
}

.about-credentials ul {
    list-style: none;
    padding: 0;
    margin: 0 0 1rem 0;
}

.about-credentials li {
    padding: 0.5rem 0;
    position: relative;
    padding-left: 1.5rem;
}

.about-credentials li:before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--accent-color);
}

.wiki-link {
    margin: 0;
    font-size: 0.95rem;
}

/* ===========================
   Journey Section
   =========================== */

.journey-section {
    padding: 6rem 0;
    background: white;
}

.journey-timeline {
    margin-top: 4rem;
    position: relative;
}

.journey-timeline::before {
    content: '';
    position: absolute;
    left: 40px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border-color);
}

.journey-step {
    display: flex;
    gap: 2rem;
    margin-bottom: 3rem;
    position: relative;
}

.journey-step-framework {
    background: linear-gradient(135deg, #f0fdf4 0%, #f0f9ff 100%);
    border: 2px solid var(--accent-color);
    border-radius: 12px;
    padding: 2rem;
    margin-top: 2rem;
}

.step-number {
    min-width: 80px;
    height: 80px;
    background: white;
    border: 3px solid var(--accent-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--accent-color);
    font-family: 'Crimson Pro', serif;
    position: relative;
    z-index: 2;
}

.journey-step-framework .step-number {
    background: var(--accent-color);
    color: white;
}

.step-content {
    flex: 1;
}

.step-content h3 {
    font-size: 1.6rem;
    margin-bottom: 0.75rem;
    color: var(--primary-dark);
}

.step-question {
    font-size: 1.1rem;
    font-style: italic;
    color: var(--text-light);
    margin-bottom: 1rem;
}

.step-answer {
    background: var(--light-bg);
    border-radius: 8px;
    padding: 1.5rem;
    margin: 1rem 0;
}

.step-answer p {
    margin-bottom: 0.75rem;
    line-height: 1.7;
}

.step-answer p:last-child {
    margin-bottom: 0;
}

.step-answer strong {
    color: var(--accent-color);
    font-weight: 600;
}

.breakthrough-moment {
    background: white;
    border-left: 4px solid var(--accent-color);
    padding: 1rem 1rem 1rem 1.5rem;
    margin-top: 1rem !important;
    font-weight: 500;
}

.breakthrough-moment em {
    color: var(--text-light);
}

.step-link {
    display: inline-block;
    margin-top: 0.75rem;
    color: var(--accent-color);
    font-weight: 600;
    font-size: 0.95rem;
}

.step-link:hover {
    color: var(--accent-dark);
    text-decoration: underline;
}

.journey-insight {
    background: var(--light-bg);
    border-radius: 12px;
    padding: 2.5rem;
    margin-top: 4rem;
    border-left: 4px solid var(--accent-color);
}

.journey-insight h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--primary-dark);
}

.journey-insight p {
    font-size: 1.05rem;
    line-height: 1.8;
    margin-bottom: 1rem;
}

.journey-insight p:last-child {
    margin-bottom: 0;
}

/* ===========================
   Creative Section
   =========================== */

.creative-section {
    padding: 6rem 0;
}

.creative-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.creative-card {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 2rem;
    transition: all 0.3s ease;
}

.creative-card:hover {
    border-color: var(--accent-color);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
    transform: translateY(-2px);
}

.creative-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: var(--accent-color);
}

.creative-card p {
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 0.75rem;
}

.creative-card p:last-child {
    margin-bottom: 0;
}

.creative-card strong {
    display: block;
    color: var(--primary-dark);
    margin-bottom: 0.25rem;
}

.creative-insight {
    background: white;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 2.5rem;
    margin-top: 3rem;
}

.creative-insight .lead-paragraph {
    font-size: 1.25rem;
    margin-bottom: 1.5rem;
}

.creative-insight p {
    font-size: 1.05rem;
    line-height: 1.8;
    margin-bottom: 1.25rem;
}

.creative-insight p:last-child {
    margin-bottom: 0;
}

.wiki-link-creative {
    text-align: center;
    margin-top: 2rem;
    font-size: 0.95rem;
    color: var(--text-light);
}

/* ===========================
   About
   =========================== */

.about-content {
    max-width: 700px;
    margin: 0 auto;
}

.lead-paragraph {
    font-size: 1.3rem;
    line-height: 1.8;
    margin-bottom: 2rem;
    color: var(--primary-dark);
    font-weight: 400;
}

.about-content p {
    font-size: 1.05rem;
    line-height: 1.9;
    margin-bottom: 1.5rem;
}

.about-credentials {
    background: var(--light-bg);
    border-radius: 8px;
    padding: 2rem;
    margin-top: 3rem;
}

.about-credentials h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
}

.about-credentials ul {
    list-style: none;
    padding: 0;
    margin: 0 0 1rem 0;
}

.about-credentials li {
    padding: 0.5rem 0;
    position: relative;
    padding-left: 1.5rem;
}

.about-credentials li:before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--accent-color);
}

.wiki-link {
    margin: 0;
    font-size: 0.95rem;
}

/* ===========================
   Contact
   =========================== */

.contact-intro {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 2rem;
}

.contact-email a {
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--accent-color);
}

.contact-email a:hover {
    color: var(--primary-dark);
}

.social-links {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
    margin-top: 2rem;
}

.social-links a {
    font-size: 1rem;
    font-weight: 600;
    color: var(--accent-color);
}

.social-links .separator {
    color: var(--border-color);
}

/* ===========================
   Footer
   =========================== */

.footer {
    background: var(--primary-dark);
    color: rgba(255, 255, 255, 0.8);
    padding: 3rem 0 2rem 0;
}

.footer-quote {
    font-family: 'Crimson Pro', serif;
    font-size: 1.3rem;
    font-style: italic;
    margin-bottom: 1.5rem;
    color: rgba(255, 255, 255, 0.9);
}

.footer-credit {
    margin: 0;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
}

/* ===========================
   Responsive Design
   =========================== */

@media (max-width: 991px) {
    .hero-title {
        font-size: 3rem;
    }

    .hero-subtitle {
        font-size: 1.3rem;
    }

    .hero-statement {
        font-size: 1.15rem;
    }

    .section-title {
        font-size: 2.5rem;
    }

    .publication-item-major {
        flex-direction: column;
    }

    .pub-number {
        min-width: auto;
        font-size: 2rem;
    }
}

@media (max-width: 767px) {
    .hero-section {
        padding: 8rem 0 4rem 0;
        min-height: 80vh;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .hero-statement {
        font-size: 1.05rem;
    }

    .hero-statement .emphasis {
        font-size: 1.2rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .framework-card {
        padding: 2rem 1.5rem;
    }

    .framework-number {
        left: 1.5rem;
    }

    .framework-card h4 {
        font-size: 1.5rem;
    }

    .significance-grid,
    .implications-grid {
        grid-template-columns: 1fr;
    }

    .formula-display {
        font-size: 1.5rem;
    }
}

/* ===========================
   Smooth Scroll
   =========================== */

html {
    scroll-behavior: smooth;
}

/* ===========================
   Selection Color
   =========================== */

::selection {
    background: var(--accent-color);
    color: white;
}

::-moz-selection {
    background: var(--accent-color);
    color: white;
}

/* Intellectual Journey Simple */
.intellectual-journey-simple {
    margin-top: 2.5rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.intellectual-journey-simple p {
    margin-bottom: 0.75rem;
}

.intellectual-journey-simple strong {
    color: var(--primary-dark);
}

.journey-path {
    font-size: 1.1rem;
    font-family: 'Crimson Pro', serif;
    color: var(--text-color);
    line-height: 1.8;
}

.journey-path a {
    color: var(--accent-color);
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
}

.journey-path a:hover {
    color: var(--accent-dark);
    text-decoration: underline;
}

.journey-applications {
    color: var(--text-light);
    font-style: italic;
}

.journey-caption {
    font-size: 0.9rem;
    color: var(--text-light);
    font-style: italic;
    margin-top: 0.5rem;
}

/* Intellectual Journey Box */
.intellectual-journey-box {
    background: var(--light-bg);
    border-radius: 8px;
    padding: 2rem;
    margin-top: 2.5rem;
}

.intellectual-journey-box h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: var(--primary-dark);
}

.intellectual-journey-box .journey-path {
    font-size: 1rem;
    line-height: 1.9;
    color: var(--text-color);
}

.intellectual-journey-box .journey-path a {
    color: var(--accent-color);
    font-weight: 600;
    text-decoration: none;
}

.intellectual-journey-box .journey-path a:hover {
    color: var(--accent-dark);
    text-decoration: underline;
}

.intellectual-journey-box .journey-applications {
    color: var(--text-color);
    font-weight: 500;
}