/* ===== CSS Variables ===== */
:root {
    --color-bg: #ffffff;
    --color-bg-alt: #f8f8f8;
    --color-bg-dark: #0a0a0a;
    --color-text: #1a1a1a;
    --color-text-muted: #666666;
    --color-text-light: #999999;
    --color-border: #e5e5e5;
    --color-accent: #c9a227; /* Warm gold accent */
    --color-accent-hover: #b8922a;

    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-base: 16px;
    --line-height-base: 1.6;

    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2.5rem;
    --spacing-xl: 4rem;

    --max-width: 1200px;
    --border-radius: 8px;
    --transition: 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
}

h2 {
    font-size: clamp(2rem, 4vw, 2.75rem);
}

h3 {
    font-size: 1.5rem;
}

h4 {
    font-size: 1.25rem;
}

p {
    margin-bottom: 1rem;
}

p:last-child {
    margin-bottom: 0;
}

.lead {
    font-size: 1.25rem;
    color: var(--color-text-muted);
    line-height: 1.7;
}

/* ===== Layout ===== */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section {
    padding: var(--spacing-lg) 0;
}

.section-title {
    margin-bottom: var(--spacing-md);
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 0;
    width: 3rem;
    height: 3px;
    background-color: var(--color-accent);
}

.section-intro {
    font-size: 1.125rem;
    color: var(--color-text-muted);
    max-width: 600px;
    margin-bottom: var(--spacing-md);
}

/* ===== Navigation ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--spacing-sm) 0;
    transition: var(--transition);
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
}

.navbar.scrolled {
    box-shadow: 0 1px 0 var(--color-border);
}

.nav-content {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    font-weight: 700;
    font-size: 1.25rem;
    letter-spacing: -0.02em;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.nav-links a {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-muted);
    transition: var(--transition);
}

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

.nav-cta {
    background-color: var(--color-bg-dark);
    color: white !important;
    padding: 0.6rem 1.25rem;
    border-radius: var(--border-radius);
}

.nav-cta:hover {
    background-color: #222 !important;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background-color: var(--color-text);
    transition: var(--transition);
}

/* ===== Hero ===== */
.hero {
    display: flex;
    align-items: center;
    padding-top: 100px;
    padding-bottom: var(--spacing-lg);
    background: linear-gradient(135deg, #fafafa 0%, #ffffff 100%);
}

.hero-content {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    align-items: center;
}

.hero-eyebrow {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-accent);
    margin-bottom: var(--spacing-sm);
}

.hero h1 {
    margin-bottom: var(--spacing-sm);
}

.hero-description {
    font-size: 1.125rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-sm);
    max-width: 500px;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.hero-image img {
    border-radius: var(--border-radius);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
    font-weight: 500;
    border-radius: var(--border-radius);
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

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

.btn-primary:hover {
    background-color: #222;
    transform: translateY(-2px);
}

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

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

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

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

.about-content p {
    font-size: 1.125rem;
    margin-bottom: 1rem;
}

.credentials {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border);
}

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

.credential-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-accent);
    line-height: 1;
}

.credential-label {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

/* ===== Expertise ===== */
.expertise {
    background-color: var(--color-bg-alt);
}

.expertise-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
}

.expertise-card {
    background: white;
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
    transition: var(--transition);
}

.expertise-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

.expertise-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-bg-dark);
    color: white;
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-sm);
}

.expertise-card h3 {
    margin-bottom: var(--spacing-xs);
}

.expertise-card p {
    color: var(--color-text-muted);
    font-size: 0.95rem;
}

/* ===== Philosophy/Quote ===== */
.philosophy {
    background-color: var(--color-bg-dark);
    padding: var(--spacing-md) 0;
}

.quote-block {
    text-align: center;
    margin: 0;
}

.quote-block p {
    font-size: 1.5rem;
    font-weight: 500;
    color: white;
    font-style: italic;
    margin: 0;
}

/* ===== Subsection Title ===== */
.subsection-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

/* ===== Ventures ===== */
.ventures {
    background-color: var(--color-bg);
}

.venture-featured {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background-color: var(--color-bg-dark);
    color: white;
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-md);
}

.venture-logo {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: white;
    color: var(--color-bg-dark);
    border-radius: var(--border-radius);
    font-size: 2.5rem;
    font-weight: 700;
    flex-shrink: 0;
}

.venture-logo .eightbit-logo {
    width: 50px;
    height: auto;
    filter: invert(1);
}

.venture-info h3 {
    font-size: 1.5rem;
    margin-bottom: 0.25rem;
}

.venture-role {
    color: var(--color-accent);
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
}

.venture-info p {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--spacing-sm);
}

.venture-link {
    display: inline-block;
    color: var(--color-accent);
    font-weight: 500;
    transition: var(--transition);
}

.venture-link:hover {
    color: white;
}

.ventures-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.venture-item {
    padding: var(--spacing-sm);
    background-color: var(--color-bg-alt);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
}

.venture-item h4 {
    margin-bottom: 0.25rem;
}

.venture-item p {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-xs);
}

.venture-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--color-accent);
    background-color: rgba(201, 162, 39, 0.1);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
}

.ventures-note {
    text-align: center;
    color: var(--color-text-muted);
    font-style: italic;
}

/* ===== Teaching ===== */
.teaching {
    background-color: var(--color-bg-alt);
}

.teaching-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.teaching-card {
    background: white;
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
}

.teaching-card h3,
.teaching-card h4 {
    margin-bottom: 0.25rem;
}

.teaching-role {
    color: var(--color-accent);
    font-weight: 500;
    font-size: 0.9rem;
    margin-bottom: var(--spacing-sm);
}

.teaching-card p:last-child {
    color: var(--color-text-muted);
    font-size: 0.95rem;
}

.advocacy {
    background-color: white;
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--color-accent);
}

.advocacy h3 {
    margin-bottom: var(--spacing-sm);
}

.advocacy p {
    color: var(--color-text-muted);
}

/* ===== Mentoring ===== */
.mentoring {
    background-color: var(--color-bg);
}

.mentor-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.mentor-item {
    padding: var(--spacing-sm);
    background-color: var(--color-bg-alt);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
}

.mentor-item h4 {
    margin-bottom: 0.25rem;
    font-size: 1rem;
}

.mentor-item p {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-bottom: 0.25rem;
}

.tenure {
    font-size: 0.75rem;
    color: var(--color-accent);
    font-weight: 500;
}

/* ===== Awards ===== */
.awards {
    background-color: var(--color-bg-alt);
}

.awards-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-sm);
}

.award-item {
    text-align: center;
    padding: var(--spacing-sm);
}

.award-title {
    display: block;
    font-weight: 600;
    font-size: 1rem;
    margin-bottom: 0.25rem;
}

.award-desc {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

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

.education-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
}

.education-item h4 {
    margin-bottom: 0.25rem;
}

.education-item p {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    margin-bottom: 0.25rem;
}

.language-note {
    color: var(--color-accent) !important;
    font-weight: 500;
}

/* ===== Contact ===== */
.contact {
    background-color: var(--color-bg-dark);
    color: white;
    text-align: center;
}

.contact .section-title {
    color: white;
}

.contact .section-title::after {
    left: 50%;
    transform: translateX(-50%);
}

.contact-intro {
    color: rgba(255, 255, 255, 0.7);
    font-size: 1.125rem;
    max-width: 500px;
    margin: 0 auto var(--spacing-lg);
}

.contact-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.contact-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 1.5rem;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    font-weight: 500;
    transition: var(--transition);
}

.contact-link:hover {
    background-color: var(--color-accent);
    color: var(--color-bg-dark);
}

.contact-link svg {
    width: 20px;
    height: 20px;
}

/* ===== Footer ===== */
.footer {
    background-color: var(--color-bg-dark);
    color: rgba(255, 255, 255, 0.5);
    padding: var(--spacing-md) 0;
    text-align: center;
    font-size: 0.875rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* ===== Responsive ===== */
@media (max-width: 1100px) {
    .expertise-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 968px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-description {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-cta {
        justify-content: center;
    }

    .hero-image {
        order: -1;
        max-width: 350px;
        margin: 0 auto;
    }

    .credentials {
        grid-template-columns: repeat(2, 1fr);
    }

    .expertise-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .ventures-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .mentor-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .awards-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 60px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: var(--spacing-md);
        gap: var(--spacing-sm);
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }

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

    .mobile-menu-btn {
        display: flex;
    }

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

    .mobile-menu-btn.active span:nth-child(2) {
        opacity: 0;
    }

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

    .venture-featured {
        flex-direction: column;
        text-align: center;
    }

    .venture-logo {
        margin: 0 auto;
    }

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

    .contact-links {
        flex-direction: column;
        align-items: center;
    }

    .contact-link {
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .section {
        padding: var(--spacing-lg) 0;
    }

    .hero {
        padding-top: 80px;
        padding-bottom: var(--spacing-md);
    }

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

    .btn {
        width: 100%;
    }

    .credentials {
        grid-template-columns: repeat(2, 1fr);
    }

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

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

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

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

    .quote-block p {
        font-size: 1.25rem;
    }
}