:root {
    /* Color Palette - Industrial Tech with Warm Accents */
    --color-bg: #0a0a0a;
    --color-surface: #1a1a1a;
    --color-surface-elevated: #242424;
    --color-text: #f5f5f5;
    --color-text-muted: #999999;
    --color-accent: #ff6b35;
    --color-accent-alt: #f7931e;
    --color-border: #333333;
    --color-timeline: #ff6b35;

    /* Typography */
    --font-display: 'Bebas Neue', sans-serif;
    --font-body: 'Space Grotesk', sans-serif;
    --font-mono: 'IBM Plex Mono', monospace;

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

    /* Sidebar */
    --sidebar-width: 50px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

/* Vertical Name Sidebar */
.name-sidebar {
    position: fixed;
    left: 0;
    top: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--color-accent);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 4px 0 20px rgba(255, 107, 53, 0.3);
}

.vertical-name {
    writing-mode: vertical-rl;
    text-orientation: mixed;
    font-family: var(--font-display);
    font-size: 1.2rem;
    letter-spacing: 0.15em;
    color: var(--color-bg);
    font-weight: 700;
    transform: rotate(180deg);
}

/* Main Content */
.content {
    margin-left: var(--sidebar-width);
    padding: var(--spacing-lg) var(--spacing-md);
    max-width: 900px;
    animation: fadeIn 0.8s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Hero Section */
.hero {
    min-height: 80vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
    padding: var(--spacing-xl) 0;
}

.hero-label {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.2em;
    color: var(--color-accent);
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
    animation: slideInLeft 0.6s ease-out 0.2s both;
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(3rem, 12vw, 5rem);
    line-height: 0.95;
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.02em;
}

.hero-title .line {
    display: block;
    animation: slideInLeft 0.8s ease-out both;
}

.hero-title .line:nth-child(1) {
    animation-delay: 0.3s;
    color: var(--color-text);
}

.hero-title .line:nth-child(2) {
    animation-delay: 0.4s;
    color: var(--color-accent);
}

.hero-title .line:nth-child(3) {
    animation-delay: 0.5s;
    color: var(--color-text);
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.hero-subtitle {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
    animation: fadeIn 0.8s ease-out 0.6s both;
}

.hero-meta {
    display: flex;
    gap: var(--spacing-md);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--color-text-muted);
    animation: fadeIn 0.8s ease-out 0.7s both;
}

/* Section Common Styles */
section {
    margin-bottom: var(--spacing-2xl);
    padding-top: var(--spacing-xl);
    position: relative;
}

.section-number {
    font-family: var(--font-display);
    font-size: 4rem;
    color: var(--color-surface-elevated);
    position: absolute;
    top: 0;
    left: -10px;
    z-index: -1;
    line-height: 1;
}

.section-title {
    font-family: var(--font-display);
    font-size: 2.5rem;
    margin-bottom: var(--spacing-lg);
    letter-spacing: 0.05em;
    color: var(--color-text);
    border-bottom: 3px solid var(--color-accent);
    display: inline-block;
    padding-bottom: var(--spacing-xs);
}

/* About Section */
.about-content {
    background: var(--color-surface);
    padding: var(--spacing-lg);
    border-left: 4px solid var(--color-accent);
    position: relative;
}

.about-content::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, transparent 70%, rgba(255, 107, 53, 0.05));
    pointer-events: none;
}

.lead {
    font-size: 1.3rem;
    font-weight: 500;
    color: var(--color-accent);
    margin-bottom: var(--spacing-md);
    font-style: italic;
}

.philosophy {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.philosophy-item {
    text-align: center;
    padding: var(--spacing-md);
    background: var(--color-surface-elevated);
    border-radius: 8px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.philosophy-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(255, 107, 53, 0.2);
}

.philosophy-item .icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-xs);
}

.philosophy-item span {
    display: block;
    font-weight: 500;
    font-size: 0.9rem;
}

/* AI Leadership Section - Compact */
.ai-leadership {
    background: var(--color-surface);
    padding: var(--spacing-lg);
    border-left: 4px solid var(--color-accent);
}

.ai-content-compact {
    max-width: 800px;
}

.ai-intro-text {
    font-size: 1.1rem;
    line-height: 1.7;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-lg);
}

.ai-intro-text strong {
    color: var(--color-accent);
    font-weight: 600;
}

.inline-link {
    color: var(--color-accent);
    text-decoration: none;
    font-weight: 600;
    margin-left: var(--spacing-xs);
    transition: transform 0.3s ease;
    display: inline-block;
}

.inline-link:hover {
    transform: translateX(3px);
    text-decoration: underline;
}

.ai-highlights {
    display: grid;
    gap: var(--spacing-md);
}

.highlight-item {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
    padding: var(--spacing-md);
    background: var(--color-surface-elevated);
    border-radius: 6px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.highlight-item:hover {
    transform: translateX(5px);
    box-shadow: 0 5px 15px rgba(255, 107, 53, 0.15);
}

.highlight-icon {
    font-size: 1.8rem;
    flex-shrink: 0;
}

.highlight-item strong {
    color: var(--color-text);
    font-weight: 600;
    display: block;
    margin-bottom: 0.25rem;
}

.highlight-item div {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    line-height: 1.5;
}

.highlight-link {
    color: var(--color-accent);
    text-decoration: none;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    margin-left: var(--spacing-xs);
    transition: opacity 0.3s ease;
}

.highlight-link:hover {
    text-decoration: underline;
    opacity: 0.8;
}

/* Career Timeline */
.timeline {
    position: relative;
    padding-left: var(--spacing-lg);
}

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

.timeline-item {
    position: relative;
    margin-bottom: var(--spacing-xl);
    padding-left: var(--spacing-lg);
}

.timeline-marker {
    position: absolute;
    left: -30px;
    top: 8px;
    width: 12px;
    height: 12px;
    background: var(--color-accent);
    border: 3px solid var(--color-bg);
    border-radius: 50%;
    box-shadow: 0 0 0 3px var(--color-surface-elevated);
}

.timeline-content {
    background: var(--color-surface);
    padding: var(--spacing-lg);
    border-radius: 8px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.timeline-content:hover {
    transform: translateX(5px);
    box-shadow: -5px 5px 20px rgba(255, 107, 53, 0.1);
}

.timeline-year {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--color-accent);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.timeline-role {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.timeline-company {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
}

.timeline-details {
    list-style: none;
    margin-bottom: var(--spacing-md);
}

.timeline-details li {
    padding-left: var(--spacing-md);
    position: relative;
    margin-bottom: var(--spacing-xs);
    color: var(--color-text-muted);
}

.timeline-details li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--color-accent);
}

.timeline-highlight {
    background: var(--color-surface-elevated);
    padding: var(--spacing-md);
    border-left: 3px solid var(--color-accent);
    font-style: italic;
    margin-top: var(--spacing-md);
    color: var(--color-text-muted);
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-md);
}

.tech-tags span {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    background: var(--color-accent);
    color: var(--color-bg);
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    font-weight: 600;
}

/* Skills Grid */
.skills-grid {
    display: grid;
    gap: var(--spacing-lg);
}

.skill-category {
    background: var(--color-surface);
    padding: var(--spacing-lg);
    border-radius: 8px;
    border-top: 3px solid var(--color-accent);
}

.skill-category h3 {
    font-size: 1.3rem;
    margin-bottom: var(--spacing-md);
    color: var(--color-accent);
}

.skill-category ul {
    list-style: none;
}

.skill-category li {
    padding: var(--spacing-xs) 0;
    color: var(--color-text-muted);
    position: relative;
    padding-left: var(--spacing-md);
}

.skill-category li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--color-accent);
}

/* Mentorship Card */
.mentorship-card {
    background: linear-gradient(135deg, var(--color-surface) 0%, var(--color-surface-elevated) 100%);
    padding: var(--spacing-xl);
    border-radius: 12px;
    text-align: center;
    border: 2px solid var(--color-border);
    position: relative;
    overflow: hidden;
}

.mentorship-card::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 107, 53, 0.1) 0%, transparent 70%);
    animation: pulse 4s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 0.5;
    }
    50% {
        transform: scale(1.1);
        opacity: 0.8;
    }
}

.mentorship-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.mentorship-card h3 {
    font-size: 1.8rem;
    margin-bottom: var(--spacing-md);
    position: relative;
    z-index: 1;
}

.mentorship-card p {
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-lg);
    position: relative;
    z-index: 1;
}

.cta-button {
    display: inline-block;
    background: var(--color-accent);
    color: var(--color-bg);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: 6px;
    text-decoration: none;
    font-weight: 700;
    font-size: 1rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
    z-index: 1;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(255, 107, 53, 0.4);
}

/* Speaking Section */
.speaking-list {
    display: grid;
    gap: var(--spacing-lg);
}

.speaking-item {
    background: var(--color-surface);
    padding: var(--spacing-lg);
    border-radius: 8px;
    border-left: 4px solid var(--color-accent);
}

.speaking-item h3 {
    font-size: 1.3rem;
    margin-bottom: var(--spacing-sm);
}

.speaking-item p {
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
}

.speaking-topics {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.speaking-topics span {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    background: var(--color-surface-elevated);
    color: var(--color-accent);
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    border: 1px solid var(--color-border);
}

/* Links Grid */
.links-grid {
    display: grid;
    gap: var(--spacing-md);
}

.link-card {
    background: var(--color-surface);
    padding: var(--spacing-lg);
    border-radius: 8px;
    text-decoration: none;
    color: var(--color-text);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    transition: transform 0.3s ease, box-shadow 0.3s ease, background 0.3s ease;
    border: 2px solid var(--color-border);
}

.link-card:hover {
    transform: translateX(5px);
    box-shadow: 0 5px 20px rgba(255, 107, 53, 0.2);
    background: var(--color-surface-elevated);
    border-color: var(--color-accent);
}

.link-icon {
    font-size: 2rem;
}

.link-label {
    font-size: 1.2rem;
    font-weight: 700;
}

.link-meta {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-left: auto;
    font-family: var(--font-mono);
}

/* Footer */
.footer {
    margin-top: var(--spacing-2xl);
    padding: var(--spacing-xl) 0;
    border-top: 2px solid var(--color-border);
    text-align: center;
}

.footer-quote {
    font-style: italic;
    font-size: 1.1rem;
    color: var(--color-accent);
    margin-bottom: var(--spacing-md);
}

.footer-meta {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--color-text-muted);
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
}

/* Responsive Design - Tablet */
@media (min-width: 768px) {
    :root {
        --sidebar-width: 70px;
    }

    .content {
        padding: var(--spacing-xl) var(--spacing-xl);
    }

    .vertical-name {
        font-size: 1.5rem;
    }

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

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

/* Responsive Design - Desktop */
@media (min-width: 1024px) {
    :root {
        --sidebar-width: 90px;
    }

    .content {
        padding: var(--spacing-2xl) var(--spacing-2xl);
    }

    .vertical-name {
        font-size: 1.8rem;
    }

    .section-number {
        font-size: 6rem;
        left: -20px;
    }

    .links-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Scroll Animations */
@media (prefers-reduced-motion: no-preference) {
    section {
        opacity: 0;
        transform: translateY(30px);
        animation: sectionReveal 0.8s ease-out forwards;
        animation-timeline: view();
        animation-range: entry 0% cover 30%;
    }
}

@keyframes sectionReveal {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Print Styles */
@media print {
    .name-sidebar {
        position: relative;
        width: 100%;
        height: auto;
        writing-mode: horizontal-tb;
    }

    .vertical-name {
        writing-mode: horizontal-tb;
        transform: none;
        font-size: 2rem;
    }

    .content {
        margin-left: 0;
    }

    section {
        page-break-inside: avoid;
    }
}