/* ==========================================================================
   Ben Schippers - Portfolio Stylesheet
   Clean, professional, with subtle polish
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Custom Properties (Design Tokens)
   -------------------------------------------------------------------------- */
:root {
    /* Colors */
    --color-bg: #0a0a0b;
    --color-bg-elevated: #111113;
    --color-bg-hover: #1a1a1d;
    --color-surface: #1e1e21;
    --color-border: #2a2a2d;
    --color-border-hover: #3a3a3d;

    --color-text: #fafafa;
    --color-text-secondary: #a0a0a5;
    --color-text-muted: #6a6a6f;

    --color-primary: #10b981;
    --color-primary-hover: #34d399;
    --color-primary-muted: rgba(16, 185, 129, 0.15);

    --color-accent: #8b5cf6;
    --color-accent-hover: #a78bfa;

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 500ms ease;

    /* Layout */
    --max-width: 1000px;
    --header-height: 72px;
}

/* --------------------------------------------------------------------------
   Animations
   -------------------------------------------------------------------------- */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.fade-in {
    animation: fadeInUp 0.6s ease-out forwards;
}

.fade-in:nth-child(2) { animation-delay: 0.1s; }
.fade-in:nth-child(3) { animation-delay: 0.2s; }
.fade-in:nth-child(4) { animation-delay: 0.3s; }
.fade-in:nth-child(5) { animation-delay: 0.4s; }

/* --------------------------------------------------------------------------
   Reset & Base Styles
   -------------------------------------------------------------------------- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    min-height: 100vh;
}

a {
    color: inherit;
    text-decoration: none;
}

ul {
    list-style: none;
}

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

/* --------------------------------------------------------------------------
   Typography
   -------------------------------------------------------------------------- */
h1, h2, h3, h4 {
    font-weight: 600;
    line-height: 1.3;
    letter-spacing: -0.02em;
}

h1 {
    font-size: clamp(2rem, 4vw, 3rem);
    line-height: 1.2;
}

h2 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    margin-bottom: var(--space-xl);
}

h3 {
    font-size: 1.125rem;
}

h4 {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-primary);
}

.highlight {
    color: var(--color-primary);
}

/* --------------------------------------------------------------------------
   Layout Components
   -------------------------------------------------------------------------- */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: rgba(10, 10, 11, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    z-index: 100;
}

.nav-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-xl);
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-weight: 600;
    font-size: 1rem;
}

.logo-icon {
    font-size: 1.25rem;
    color: var(--color-primary);
}

.logo-text {
    color: var(--color-text-secondary);
}

.logo-text .highlight {
    color: var(--color-text);
}

.nav-links {
    display: flex;
    gap: var(--space-lg);
}

.nav-links a {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    transition: color var(--transition-fast);
}

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

/* --------------------------------------------------------------------------
   Hero Section
   -------------------------------------------------------------------------- */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: calc(var(--header-height) + var(--space-4xl)) var(--space-xl) var(--space-4xl);
}

.hero-content {
    max-width: 720px;
}

.hero-intro {
    font-size: 1rem;
    color: var(--color-primary);
    font-weight: 500;
    margin-bottom: var(--space-md);
}

.hero-subtitle {
    margin-top: var(--space-lg);
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

.hero-actions {
    margin-top: var(--space-2xl);
    display: flex;
    gap: var(--space-md);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-md) var(--space-xl);
    font-size: 0.9375rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--color-primary);
    color: var(--color-bg);
}

.btn-primary:hover {
    background: var(--color-primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(16, 185, 129, 0.3);
}

.btn-secondary {
    background: transparent;
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover {
    background: var(--color-bg-hover);
    border-color: var(--color-border-hover);
}

/* --------------------------------------------------------------------------
   What I Do Section
   -------------------------------------------------------------------------- */
.what-i-do {
    padding: var(--space-4xl) var(--space-xl);
    background: var(--color-bg-elevated);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.what-i-do .section-content {
    max-width: var(--max-width);
    margin: 0 auto;
}

.what-i-do h2 {
    text-align: center;
}

.capabilities-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl);
    margin-top: var(--space-2xl);
}

.capability {
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    border: 1px solid transparent;
    transition: all var(--transition-base);
}

.capability:hover {
    background: var(--color-bg-hover);
    border-color: var(--color-border);
}

.capability-icon {
    font-size: 1.5rem;
    margin-bottom: var(--space-sm);
}

.capability h3 {
    margin-bottom: var(--space-sm);
    color: var(--color-text);
}

.capability p {
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
    line-height: 1.6;
}

/* --------------------------------------------------------------------------
   By the Numbers Section
   -------------------------------------------------------------------------- */
.by-the-numbers {
    padding: var(--space-3xl) var(--space-xl);
    background: var(--color-bg);
}

.by-the-numbers .section-content {
    max-width: var(--max-width);
    margin: 0 auto;
}

.by-the-numbers h2 {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.numbers-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: var(--space-lg);
    text-align: center;
}

@media (max-width: 900px) {
    .numbers-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 600px) {
    .numbers-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.number-item {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.number-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-primary);
    font-family: var(--font-mono);
    letter-spacing: -0.02em;
}

.number-label {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    line-height: 1.4;
}

/* --------------------------------------------------------------------------
   Projects Section
   -------------------------------------------------------------------------- */
.projects {
    padding: var(--space-4xl) var(--space-xl);
    max-width: var(--max-width);
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-3xl);
}

.section-header p {
    margin-top: var(--space-sm);
    color: var(--color-text-secondary);
}

.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
}

.project-card {
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    transition: all var(--transition-base);
}

.project-card:hover {
    border-color: var(--color-border-hover);
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
}

.project-card.featured {
    border-color: var(--color-primary-muted);
}

.project-card.featured:hover {
    border-color: var(--color-primary);
}

.project-card.confidential {
    opacity: 0.7;
    border-style: dashed;
}

.project-card.confidential:hover {
    opacity: 1;
}

/* Project Status Badges */
.project-status {
    display: inline-block;
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    font-size: 0.625rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-md);
}

.project-status.live {
    background: var(--color-primary);
    color: var(--color-bg);
}

.project-status.dev {
    background: var(--color-accent);
    color: white;
}

.project-status.coming {
    background: var(--color-text-muted);
    color: var(--color-bg);
}

.project-status.demo {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    color: white;
}

.project-icon {
    font-size: 1.75rem;
    margin-bottom: var(--space-sm);
}

.project-card h3 {
    margin-bottom: var(--space-sm);
}

.project-card > p {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    margin-bottom: var(--space-md);
    line-height: 1.6;
}

.project-tags {
    display: flex;
    gap: var(--space-xs);
    flex-wrap: wrap;
}

.tag {
    background: var(--color-primary-muted);
    color: var(--color-primary);
    padding: 2px var(--space-sm);
    border-radius: var(--radius-sm);
    font-size: 0.6875rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.project-link {
    display: inline-block;
    margin-top: var(--space-md);
    color: var(--color-primary);
    font-size: 0.875rem;
    font-weight: 500;
    transition: color var(--transition-fast);
}

.project-link:hover {
    color: var(--color-primary-hover);
}

/* Screenshot Preview */
.screenshot-trigger {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    margin-top: var(--space-md);
    color: var(--color-text-muted);
    font-size: 0.875rem;
    cursor: pointer;
    transition: color var(--transition-fast);
}

.screenshot-trigger:hover {
    color: var(--color-primary);
}

.screenshot-modal {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.9);
    z-index: 1000;
    padding: var(--space-xl);
    cursor: pointer;
    animation: fadeIn 0.2s ease;
}

.screenshot-modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.screenshot-modal img {
    max-width: 90vw;
    max-height: 85vh;
    border-radius: var(--radius-md);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

.screenshot-modal-close {
    position: absolute;
    top: var(--space-lg);
    right: var(--space-lg);
    color: var(--color-text-muted);
    font-size: 1.5rem;
    cursor: pointer;
    transition: color var(--transition-fast);
}

.screenshot-modal-close:hover {
    color: white;
}

/* Video Modal */
.video-trigger {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    color: var(--color-text-muted);
    font-size: 0.875rem;
    cursor: pointer;
    transition: color var(--transition-fast);
}

.video-trigger:hover {
    color: var(--color-primary);
}

.project-actions {
    display: flex;
    gap: var(--space-md);
    align-items: center;
    margin-top: var(--space-md);
}

.project-actions .project-link {
    margin-top: 0;
}

.video-modal {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.95);
    z-index: 1000;
    padding: var(--space-xl);
    cursor: pointer;
    animation: fadeIn 0.2s ease;
}

.video-modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.video-container {
    width: 90vw;
    max-width: 1000px;
    aspect-ratio: 16 / 9;
    cursor: default;
}

.video-container iframe {
    width: 100%;
    height: 100%;
    border-radius: var(--radius-md);
}

.video-modal-close {
    position: absolute;
    top: var(--space-lg);
    right: var(--space-lg);
    color: var(--color-text-muted);
    font-size: 1.5rem;
    cursor: pointer;
    transition: color var(--transition-fast);
}

.video-modal-close:hover {
    color: white;
}

.project-tagline {
    display: block;
    margin-top: var(--space-md);
    font-style: italic;
    font-size: 0.8125rem;
    color: var(--color-text-muted);
}

/* --------------------------------------------------------------------------
   Writing Section
   -------------------------------------------------------------------------- */
.writing {
    padding: var(--space-4xl) var(--space-xl);
    background: var(--color-bg-elevated);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.writing .section-header {
    max-width: var(--max-width);
    margin: 0 auto var(--space-2xl);
}

.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-lg);
    max-width: var(--max-width);
    margin: 0 auto;
}

.article-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    transition: all var(--transition-base);
}

.article-card:hover {
    border-color: var(--color-border-hover);
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
}

.article-meta {
    display: flex;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
    font-size: 0.75rem;
}

.article-date {
    color: var(--color-text-muted);
}

.article-tag {
    color: var(--color-primary);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.article-card h3 {
    font-size: 1.125rem;
    margin-bottom: var(--space-sm);
    line-height: 1.4;
}

.article-card p {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    line-height: 1.6;
    margin-bottom: var(--space-md);
}

.article-link {
    color: var(--color-primary);
    font-size: 0.875rem;
    font-weight: 500;
    transition: color var(--transition-fast);
}

.article-link:hover {
    color: var(--color-primary-hover);
}

.writing-cta {
    text-align: center;
    margin-top: var(--space-2xl);
}

/* --------------------------------------------------------------------------
   Labs Section
   -------------------------------------------------------------------------- */
.labs {
    padding: var(--space-4xl) var(--space-xl);
    max-width: var(--max-width);
    margin: 0 auto;
}

.labs .section-header {
    opacity: 0.8;
}

.labs .section-header h2 {
    font-size: clamp(1.25rem, 2.5vw, 1.5rem);
}

.labs-grid {
    opacity: 0.85;
}

.labs-grid .project-card {
    padding: var(--space-lg);
}

.labs-grid .project-icon {
    font-size: 1.5rem;
}

.labs-grid .project-card h3 {
    font-size: 1rem;
}

.labs-grid .project-card > p {
    font-size: 0.8125rem;
}

/* --------------------------------------------------------------------------
   About / CV Section
   -------------------------------------------------------------------------- */
.about {
    padding: var(--space-4xl) var(--space-xl);
    background: var(--color-bg-elevated);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.about-content {
    max-width: 720px;
    margin: 0 auto;
}

.about-content h2 {
    text-align: center;
    margin-bottom: var(--space-3xl);
}

/* CV Sections */
.cv-section {
    margin-bottom: var(--space-2xl);
    padding-bottom: var(--space-2xl);
    border-bottom: 1px solid var(--color-border);
}

.cv-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: var(--space-sm);
}

.cv-header h3 {
    color: var(--color-text);
    font-size: 1.25rem;
}

.cv-duration {
    color: var(--color-text-muted);
    font-size: 0.875rem;
    font-family: var(--font-mono);
}

.cv-role {
    color: var(--color-primary);
    font-weight: 500;
    margin-bottom: var(--space-xs);
}

.cv-scope {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    margin-bottom: var(--space-lg);
}

.cv-highlights {
    list-style: none;
    padding: 0;
}

.cv-highlights li {
    position: relative;
    padding-left: var(--space-lg);
    margin-bottom: var(--space-sm);
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
    line-height: 1.6;
}

.cv-highlights li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--color-primary);
}

.cv-summary {
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
    line-height: 1.7;
}

/* Skills */
.cv-skills {
    margin-bottom: var(--space-2xl);
    padding-bottom: var(--space-2xl);
    border-bottom: 1px solid var(--color-border);
}

.cv-skills h3 {
    margin-bottom: var(--space-lg);
    color: var(--color-text);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
}

.skill-category h4 {
    margin-bottom: var(--space-xs);
}

.skill-category p {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    line-height: 1.6;
}

/* Education */
.cv-education h3 {
    margin-bottom: var(--space-sm);
    color: var(--color-text);
}

.cv-education p {
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
}

.cv-footnote {
    margin-top: var(--space-sm);
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    font-style: italic;
}

/* --------------------------------------------------------------------------
   Contact Section
   -------------------------------------------------------------------------- */
.contact {
    padding: var(--space-4xl) var(--space-xl);
    max-width: var(--max-width);
    margin: 0 auto;
}

.contact-content {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.contact-content h2 {
    margin-bottom: var(--space-md);
}

.contact-content > p {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-2xl);
    line-height: 1.7;
}

.contact-links {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    align-items: center;
}

.contact-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text);
    font-size: 0.9375rem;
    transition: all var(--transition-fast);
    min-width: 320px;
    justify-content: center;
}

.contact-link:hover {
    border-color: var(--color-primary);
    background: var(--color-bg-hover);
    transform: translateY(-2px);
}

.contact-icon {
    font-size: 1.125rem;
}

.contact-location {
    margin-top: var(--space-xl);
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.site-footer {
    padding: var(--space-2xl) var(--space-xl);
    text-align: center;
    border-top: 1px solid var(--color-border);
}

.footer-content p {
    color: var(--color-text-muted);
    font-size: 0.8125rem;
}

.coffee-counter {
    margin-top: var(--space-sm);
    font-style: italic;
    opacity: 0.7;
}

.dendro-hint {
    margin-top: var(--space-md);
    font-size: 1.25rem;
    cursor: pointer;
    opacity: 0.4;
    transition: all var(--transition-base);
    display: inline-block;
}

.dendro-hint:hover {
    opacity: 1;
    transform: scale(1.2);
}

/* --------------------------------------------------------------------------
   Tree Ring Easter Egg
   -------------------------------------------------------------------------- */
.tree-ring-modal {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.95);
    z-index: 1000;
    padding: var(--space-xl);
    cursor: pointer;
    animation: fadeIn 0.3s ease;
}

.tree-ring-modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.tree-ring-container {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    max-width: 540px;
    width: 100%;
    cursor: default;
    text-align: center;
    position: relative;
}

.tree-ring-close {
    position: absolute;
    top: var(--space-md);
    right: var(--space-lg);
    color: var(--color-text-muted);
    font-size: 1.5rem;
    cursor: pointer;
    transition: color var(--transition-fast);
}

.tree-ring-close:hover {
    color: var(--color-text);
}

.tree-ring-container h3 {
    color: var(--color-text);
    margin-bottom: var(--space-xs);
    font-family: Georgia, 'Times New Roman', serif;
    letter-spacing: 0.02em;
}

.tree-ring-subtitle {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    margin-bottom: var(--space-xl);
    font-style: italic;
}

.tree-ring-viz {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-lg);
}

.tree-ring-svg {
    width: 100%;
    max-width: 520px;
    height: auto;
}

.ring {
    fill: none;
    stroke: #a89078;
    stroke-width: 1.5;
    transition: all var(--transition-base);
}

.ring:hover {
    stroke-width: 2.5;
    stroke: #d4c4a8;
}

.ring-microsoft {
    stroke: #c4a574;
    stroke-width: 2;
}

.ring-microsoft:hover {
    stroke: var(--color-primary);
}

.ring-experis {
    stroke: #b8956c;
    stroke-width: 1.5;
}

.ring-experis:hover {
    stroke: var(--color-accent);
}

.ring-mural {
    stroke: #d4a86a;
    stroke-width: 1.5;
}

.ring-mural:hover {
    stroke: #f59e0b;
}

.ring-research {
    stroke: #8fa878;
    stroke-width: 1.5;
}

.ring-research:hover {
    stroke: #84cc16;
}

.ring-now {
    stroke: var(--color-primary);
    stroke-width: 2.5;
}

.ring-pith {
    fill: #3d2818;
}

.decade-marker {
    fill: var(--color-text-secondary);
}

.tree-ring-legend {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-md);
    font-size: 0.75rem;
    color: var(--color-text-secondary);
}

.legend-item {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.legend-dot {
    width: 12px;
    height: 12px;
    border-radius: 2px;
}

.legend-dot.microsoft {
    background: #c4a574;
}

.legend-dot.experis {
    background: #b8956c;
}

.legend-dot.mural {
    background: #d4a86a;
}

.legend-dot.research {
    background: #8fa878;
}

.legend-dot.decade {
    background: var(--color-text-secondary);
    border-radius: 50%;
}

.tree-ring-footnote {
    margin-top: var(--space-lg);
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    font-style: italic;
    line-height: 1.6;
    min-height: 2.5em;
}

/* --------------------------------------------------------------------------
   Section Thesis (What I Do opener)
   -------------------------------------------------------------------------- */
.section-thesis {
    text-align: center;
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: var(--space-2xl);
    font-style: italic;
}

/* --------------------------------------------------------------------------
   Why I Build This Way Section
   -------------------------------------------------------------------------- */
.why-i-build {
    padding: var(--space-3xl) var(--space-xl);
    background: var(--color-bg);
}

.why-i-build .section-content {
    max-width: var(--max-width);
    margin: 0 auto;
}

.why-i-build h2 {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.philosophy-grid {
    display: grid;
    gap: var(--space-xl);
    max-width: 720px;
    margin: 0 auto;
}

.philosophy-item {
    padding: var(--space-lg);
    border-left: 3px solid var(--color-primary);
    background: var(--color-bg-elevated);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.philosophy-item h3 {
    color: var(--color-text);
    font-size: 1rem;
    margin-bottom: var(--space-sm);
}

.philosophy-item p {
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
    line-height: 1.7;
}

/* --------------------------------------------------------------------------
   By the Numbers (Progression Layout)
   -------------------------------------------------------------------------- */
.numbers-subtitle {
    text-align: center;
    font-style: italic;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-2xl);
}

.numbers-progression {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

@media (max-width: 900px) {
    .numbers-progression {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .numbers-progression {
        grid-template-columns: 1fr;
    }
}

.progression-item {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
    padding: var(--space-lg);
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.progression-item:hover {
    border-color: var(--color-primary-muted);
    transform: translateY(-2px);
}

.progression-item .number-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-primary);
    font-family: var(--font-mono);
    letter-spacing: -0.02em;
}

.progression-item .number-context {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
}

.progression-item .number-label {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    line-height: 1.5;
    margin-top: var(--space-xs);
}

/* --------------------------------------------------------------------------
   Case Study Section
   -------------------------------------------------------------------------- */
.case-study {
    padding: var(--space-4xl) var(--space-xl);
    background: var(--color-bg);
}

.case-study .section-content {
    max-width: 720px;
    margin: 0 auto;
}

.case-study h2 {
    text-align: center;
    margin-bottom: var(--space-xs);
}

.case-study-tagline {
    text-align: center;
    font-size: 1.125rem;
    font-style: italic;
    color: var(--color-primary);
    margin-bottom: var(--space-3xl);
}

.case-study-section {
    margin-bottom: var(--space-2xl);
}

.case-study-section h3 {
    color: var(--color-text);
    font-size: 1.125rem;
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-sm);
    border-bottom: 1px solid var(--color-border);
}

.case-study-section p {
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
    line-height: 1.7;
    margin-bottom: var(--space-md);
}

.case-study-section p:last-child {
    margin-bottom: 0;
}

.case-study-highlight {
    background: var(--color-bg-elevated);
    border-left: 3px solid var(--color-primary);
    padding: var(--space-lg);
    margin: var(--space-lg) 0;
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.case-study-highlight h4 {
    color: var(--color-text);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-sm);
}

.case-study-highlight ul {
    list-style: none;
    padding: 0;
}

.case-study-highlight li {
    position: relative;
    padding-left: var(--space-lg);
    margin-bottom: var(--space-xs);
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
}

.case-study-highlight li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--color-primary);
}

.framework-list {
    list-style: none;
    padding: 0;
    counter-reset: framework;
}

.framework-list li {
    position: relative;
    padding-left: var(--space-2xl);
    margin-bottom: var(--space-md);
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
    line-height: 1.6;
    counter-increment: framework;
}

.framework-list li::before {
    content: counter(framework);
    position: absolute;
    left: 0;
    width: 1.5rem;
    height: 1.5rem;
    background: var(--color-primary);
    color: var(--color-bg);
    border-radius: 50%;
    font-size: 0.75rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

/* Results Table */
.results-table {
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: var(--space-lg);
}

.results-row {
    display: grid;
    grid-template-columns: 1fr 80px 80px;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    border-bottom: 1px solid var(--color-border);
    font-size: 0.875rem;
}

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

.results-header {
    background: var(--color-surface);
    font-weight: 600;
    color: var(--color-text);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.results-row span:first-child {
    color: var(--color-text-secondary);
}

.results-row .dim {
    color: var(--color-text-muted);
    text-align: center;
}

.results-row .highlight-value {
    color: var(--color-primary);
    font-weight: 600;
    font-family: var(--font-mono);
    text-align: center;
}

.results-proof {
    font-style: italic;
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
    line-height: 1.7;
}

/* What I Learned - special styling */
.case-study-learning {
    background: var(--color-bg-elevated);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
}

.case-study-learning h3 {
    border-bottom: none;
    color: var(--color-primary);
}

/* --------------------------------------------------------------------------
   Responsive Design
   -------------------------------------------------------------------------- */
@media (max-width: 768px) {
    .hero {
        padding-top: calc(var(--header-height) + var(--space-3xl));
        min-height: auto;
        padding-bottom: var(--space-3xl);
    }

    .hero-content {
        max-width: 100%;
    }

    .hero-actions {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .capabilities-grid {
        grid-template-columns: 1fr;
    }

    .skills-grid {
        grid-template-columns: 1fr;
    }

    .cv-header {
        flex-direction: column;
        gap: var(--space-xs);
    }

    .nav-links {
        gap: var(--space-md);
        font-size: 0.8125rem;
    }

    /* New sections responsive */
    .section-thesis {
        font-size: 1.125rem;
    }

    .results-row {
        grid-template-columns: 1fr 60px 70px;
        gap: var(--space-sm);
        padding: var(--space-sm) var(--space-md);
        font-size: 0.8125rem;
    }

    .results-header {
        font-size: 0.6875rem;
    }

    .progression-item .number-value {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    :root {
        --space-xl: 1.5rem;
        --space-2xl: 2rem;
        --space-3xl: 2.5rem;
        --space-4xl: 3rem;
    }

    .nav-links li:nth-child(n+4) {
        display: none;
    }

    .contact-link {
        min-width: 100%;
    }
}