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

:root {
    --color-primary: #2d2d2d;
    --color-primary-dark: #1a1a1a;
    --color-secondary: #6b6b6b;
    --color-text: #2d2d2d;
    --color-text-light: #6b6b6b;
    --color-background: #f9f7f4;
    --color-background-alt: #f3f0eb;
    --color-border: #e5e0d8;
    --color-accent: #2d2d2d;
    --font-family: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-heading: 'EB Garamond', Georgia, serif;
    --font-subheading: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
    --transition: all 0.2s ease;
}

html {
    scroll-behavior: smooth;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Typography */
h1, h2 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.3;
}

h3, h4, h5, h6 {
    font-family: var(--font-subheading);
    font-weight: 500;
    line-height: 1.3;
}

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

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(249, 247, 244, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid transparent;
    transition: var(--transition);
}

.navbar.scrolled {
    border-bottom-color: var(--color-border);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 72px;
}

.nav-logo {
    display: flex;
    align-items: center;
}

.nav-logo-img {
    height: 36px;
    width: auto;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 32px;
}

.nav-menu a {
    color: var(--color-text);
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
}

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

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    transition: var(--transition);
}

/* Hero Section */
.hero {
    min-height: auto;
    display: flex;
    align-items: center;
    padding: 140px 24px 60px;
    background: var(--color-background);
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.hero-greeting {
    font-size: 1.125rem;
    color: var(--color-primary);
    font-weight: 500;
    margin-bottom: 8px;
}

.hero-name {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 16px;
    letter-spacing: -1px;
}

.hero-title {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    font-weight: 500;
    color: var(--color-secondary);
    margin-bottom: 24px;
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto 40px;
}

.hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    font-size: 1rem;
    font-weight: 500;
    border-radius: 8px;
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

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

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

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

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

/* Sections */
.section {
    padding: 40px 0;
}

.section-title {
    font-size: 1.5rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 32px;
}

/* About Section */
.about {
    background: var(--color-background);
}

.about-content {
    max-width: 900px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 60px;
    align-items: start;
}

.about-image {
}

.about-image img {
    width: 100%;
    border-radius: 8px;
}

.about-text p {
    font-size: 1.125rem;
    color: var(--color-text-light);
    margin-bottom: 24px;
}

.skills {
    margin-top: 40px;
}

.skills h3 {
    font-size: 1.25rem;
    margin-bottom: 20px;
    color: var(--color-text);
}

.skills-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.skill-tag {
    display: inline-block;
    padding: 6px 14px;
    background: var(--color-background-alt);
    border-radius: 4px;
    font-size: 0.85rem;
    color: var(--color-text-light);
}

.certifications {
    margin-top: 40px;
}

.certifications h3 {
    font-size: 1.25rem;
    margin-bottom: 16px;
    color: var(--color-text);
}

.cert-list {
    list-style: none;
    padding: 0;
}

.cert-list li {
    position: relative;
    padding-left: 24px;
    margin-bottom: 12px;
    color: var(--color-text-light);
}

.cert-list li::before {
    content: '—';
    position: absolute;
    left: 0;
    color: var(--color-text-light);
}

/* Experience Section */
.experience {
    background: var(--color-background);
}

.experience-list {
    max-width: 700px;
    margin: 0 auto;
}

.experience-item {
    padding-bottom: 40px;
    margin-bottom: 40px;
    border-bottom: 1px solid var(--color-border);
}

.experience-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.experience-header {
    margin-bottom: 16px;
}

.experience-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.experience-company {
    font-size: 1rem;
    color: var(--color-text);
    margin-bottom: 4px;
}

.experience-meta {
    font-size: 0.9rem;
    color: var(--color-text-light);
}

.experience-description {
    color: var(--color-text-light);
    margin-bottom: 16px;
    line-height: 1.7;
}

.experience-bullets {
    list-style: none;
    padding: 0;
}

.experience-bullets li {
    position: relative;
    padding-left: 16px;
    color: var(--color-text-light);
    margin-bottom: 8px;
    font-size: 0.95rem;
    line-height: 1.6;
}

.experience-bullets li::before {
    content: '—';
    position: absolute;
    left: 0;
    color: var(--color-text-light);
}

.additional-info {
    max-width: 700px;
    margin: 60px auto 0;
    padding-top: 40px;
    border-top: 1px solid var(--color-border);
}

.info-item {
    margin-bottom: 24px;
}

.info-item:last-child {
    margin-bottom: 0;
}

.info-item h3 {
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--color-text);
}

.info-item p {
    font-size: 0.95rem;
    color: var(--color-text-light);
    line-height: 1.6;
}

/* Education Section */
.education {
    background: var(--color-background);
}

/* Philanthropy Section */
.philanthropy {
    background: var(--color-background);
}

/* Projects Section */
.projects {
    background: var(--color-background);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.project-card {
    background: var(--color-background-alt);
    border-radius: 8px;
    padding: 28px;
    transition: var(--transition);
}

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

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 20px;
}

.project-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text);
}

.project-github {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    color: var(--color-text-light);
    transition: var(--transition);
}

.project-github:hover {
    color: var(--color-primary);
    background: var(--color-background-alt);
}

.projects-cta {
    text-align: center;
    margin-top: 48px;
}

.projects-cta .btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.project-card h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
}

.project-card p {
    color: var(--color-text-light);
    font-size: 0.95rem;
    margin-bottom: 16px;
}

.project-links {
    margin-bottom: 16px;
}

.project-links a {
    font-size: 0.9rem;
    color: var(--color-text);
    text-decoration: underline;
    text-underline-offset: 2px;
}

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

.project-note {
    display: block;
    font-size: 0.8rem;
    color: var(--color-text-light);
    font-style: italic;
    margin-top: 8px;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.project-tags span {
    font-size: 0.8rem;
    padding: 4px 12px;
    background: var(--color-background-alt);
    color: var(--color-text-light);
    border-radius: 12px;
}

/* Blog Section */
.blog {
    background: var(--color-background);
}

.blog-intro {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 48px;
    color: var(--color-text-light);
    font-size: 1.125rem;
}

.blog-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: start;
    width: 100%;
}

.blog-posts {
    margin: 0;
    width: 100%;
}

.blog-layout .reading-list {
    margin: 0;
    width: 100%;
}

.blog-post-placeholder {
    padding: 24px;
    background: var(--color-background-alt);
    border-radius: 8px;
    opacity: 0.7;
}

.blog-post-link {
    display: block;
    padding: 24px;
    background: var(--color-background-alt);
    border-radius: 8px;
    transition: var(--transition);
    text-decoration: none;
}

.blog-post-link + .blog-post-link {
    margin-top: 16px;
}

.blog-post-link:hover {
    background: var(--color-border);
}

.blog-post-link .blog-post-date {
    font-size: 0.8rem;
    color: var(--color-text-light);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.blog-post-link h3 {
    color: var(--color-text);
    margin: 8px 0;
}

.blog-post-link p {
    color: var(--color-text-light);
    margin: 0;
}

.blog-post-placeholder .blog-post-date {
    font-size: 0.8rem;
    color: var(--color-text-light);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.blog-post-placeholder h3 {
    font-size: 1.1rem;
    margin: 8px 0;
    color: var(--color-text);
}

.blog-post-placeholder p {
    font-size: 0.95rem;
    color: var(--color-text-light);
    margin: 0;
}

.reading-list {
    margin: 0;
}

.reading-list h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--color-text);
}

.reading-list ul {
    list-style: none;
    padding: 0;
}

.reading-list li {
    margin-bottom: 10px;
}

.reading-date {
    font-size: 0.8rem;
    color: var(--color-text-light);
    margin-right: 8px;
}

.reading-list a {
    color: var(--color-text-light);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.reading-list a:hover {
    color: var(--color-text);
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
    margin-bottom: 60px;
}

.blog-card {
    background: var(--color-background);
    border-radius: 8px;
    overflow: hidden;
    transition: var(--transition);
}

.blog-card:hover {
    background: var(--color-border);
}

.blog-card-content {
    padding: 28px;
}

.blog-card-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.blog-card-date {
    font-size: 0.85rem;
    color: var(--color-text-light);
}

.blog-card-category {
    font-size: 0.75rem;
    font-weight: 500;
    padding: 4px 10px;
    background: var(--color-border);
    color: var(--color-text);
    border-radius: 4px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.blog-card h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
    color: var(--color-text);
}

.blog-card h3 a {
    color: inherit;
}

.blog-card h3 a:hover {
    color: var(--color-primary);
}

.blog-card p {
    color: var(--color-text-light);
    font-size: 0.95rem;
    line-height: 1.7;
}

.blog-card-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 16px;
    font-weight: 500;
    font-size: 0.95rem;
}

.blog-card-link svg {
    transition: var(--transition);
}

.blog-card-link:hover svg {
    transform: translateX(4px);
}

/* Newsletter Subscription */
.newsletter {
    max-width: 450px;
    margin: 0 auto;
    text-align: center;
    padding: 40px;
    background: var(--color-background);
    border-radius: 8px;
}

.newsletter h3 {
    font-size: 1.5rem;
    margin-bottom: 12px;
}

.newsletter p {
    color: var(--color-text-light);
    margin-bottom: 24px;
}

.newsletter-form {
    display: flex;
    gap: 12px;
}

.newsletter-form input[type="email"] {
    flex: 1;
    padding: 14px 18px;
    font-size: 1rem;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    font-family: inherit;
    background: var(--color-background-alt);
    transition: var(--transition);
}

.newsletter-form input[type="email"]:focus {
    outline: none;
    border-color: var(--color-text);
}

.newsletter-form button {
    white-space: nowrap;
}

/* Contact Section */
.contact {
    background: var(--color-background);
    padding-top: 20px;
}

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

.contact-intro {
    font-size: 1.125rem;
    color: var(--color-text-light);
    margin-bottom: 40px;
}

.contact-methods {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.contact-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    padding: 24px 32px;
    background: var(--color-background-alt);
    border-radius: 8px;
    color: var(--color-text);
    transition: var(--transition);
    min-width: 100px;
}

.contact-card:hover {
    background: var(--color-border);
}

.contact-card svg {
    opacity: 0.8;
}

.contact-card span {
    font-weight: 500;
}

/* Footer */
.footer {
    background: var(--color-background);
    color: var(--color-text-light);
    padding: 48px 0;
    text-align: center;
    border-top: 1px solid var(--color-border);
}

.footer p {
    font-size: 0.9rem;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--color-background);
        flex-direction: column;
        padding: 24px;
        gap: 0;
        border-bottom: 1px solid var(--color-border);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-menu li {
        padding: 12px 0;
        border-bottom: 1px solid var(--color-border);
    }

    .nav-menu li:last-child {
        border-bottom: none;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .about-image {
        position: static;
        max-width: 220px;
        margin: 0 auto;
    }

    .hero {
        padding: 100px 24px 60px;
    }

    .section {
        padding: 60px 0;
    }

    .section-title {
        font-size: 1.75rem;
        margin-bottom: 40px;
    }

    .timeline::before {
        left: 6px;
    }

    .timeline-item {
        padding-left: 32px;
    }

    .timeline-marker {
        left: 0;
    }

    .contact-methods {
        flex-direction: column;
    }

    .contact-card {
        width: 100%;
        flex-direction: row;
        justify-content: center;
        padding: 20px 32px;
    }

    .newsletter-form {
        flex-direction: column;
    }

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

    .blog-layout {
        grid-template-columns: 1fr;
        gap: 32px;
    }
}

@media (max-width: 480px) {
    .hero-cta {
        flex-direction: column;
        width: 100%;
    }

    .btn {
        width: 100%;
    }

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