/* ============================================
   OZ Labs - Styles
   ============================================ */

/* CSS Variables */
:root {
    /* Colors — OZ Labs palette */
    --color-bg: #06060c;
    --color-bg-elevated: #0d0d18;
    --color-bg-card: #111122;
    --color-surface: #16162a;
    --color-border: #1a1a2e;
    --color-border-light: #2a2a44;

    --color-text: #e8e8f0;
    --color-text-secondary: #8888a8;
    --color-text-muted: #555570;

    --color-primary: #a855f7;
    --color-primary-light: #c084fc;
    --color-primary-dark: #9333ea;

    --color-accent: #00f0ff;
    --color-accent-secondary: #ff00ff;

    --color-green: #00ff88;

    --gradient-primary: linear-gradient(135deg, var(--color-accent) 0%, var(--color-primary) 100%);
    --gradient-text: linear-gradient(135deg, var(--color-accent) 0%, var(--color-primary) 50%, var(--color-accent-secondary) 100%);

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

    /* Sizing */
    --container-max: 1200px;
    --nav-height: 72px;

    /* Effects */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--nav-height);
}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* GP Canvas Background */
#gp-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    opacity: 0.6;
}

/* Container */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    color: var(--color-text);
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(1.75rem, 3vw, 2.5rem); }
h3 { font-size: 1.25rem; }

p {
    color: var(--color-text-secondary);
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 28px rgba(99, 102, 241, 0.4);
}

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

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

.btn-nav {
    padding: var(--space-sm) var(--space-lg);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
}

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

.btn-full {
    width: 100%;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    z-index: 1000;
    background: rgba(10, 10, 15, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
}

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

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

.logo-oz {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    flex-shrink: 0;
}

.logo-oz-sm {
    width: 32px;
    height: 32px;
}

.logo-text {
    color: var(--color-text);
    font-weight: 600;
    font-size: 1.1rem;
    letter-spacing: 0.02em;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
    list-style: none;
}

.nav-menu a {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    transition: color var(--transition-fast);
}

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

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

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

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--nav-height) var(--space-lg) var(--space-3xl);
    position: relative;
}

.hero-content {
    max-width: 800px;
    text-align: center;
    background: rgba(10, 10, 15, 0.75);
    padding: var(--space-2xl) var(--space-3xl);
    border-radius: var(--radius-xl);
    backdrop-filter: blur(10px);
    border: 1px solid var(--color-border);
}

.hero-badge {
    display: inline-block;
    padding: var(--space-sm) var(--space-lg);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 100px;
    font-size: 0.85rem;
    color: var(--color-accent);
    margin-bottom: var(--space-xl);
}

.hero h1 {
    margin-bottom: var(--space-lg);
}

.gradient-text {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.2rem;
    max-width: 600px;
    margin: 0 auto var(--space-2xl);
    color: var(--color-text-secondary);
}

.hero-cta {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--space-3xl);
}

.hero-note {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.85rem;
    color: var(--color-text-muted);
    font-family: var(--font-mono);
}

.pulse {
    width: 8px;
    height: 8px;
    background: var(--color-accent);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.2); }
}

/* Color Scheme Toggle */
.color-toggle {
    margin-top: var(--space-lg);
}

.btn-toggle {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 100px;
    color: var(--color-text-secondary);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    cursor: pointer;
    transition: all var(--transition-base);
}

.btn-toggle:hover {
    border-color: var(--color-primary);
    color: var(--color-text);
}

.btn-toggle svg {
    width: 16px;
    height: 16px;
}

/* Section Styles */
section {
    padding: var(--space-4xl) 0;
}

.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto var(--space-3xl);
}

.section-tag {
    display: inline-block;
    padding: var(--space-xs) var(--space-md);
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: 100px;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--color-primary-light);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-md);
}

.section-header h2 {
    margin-bottom: var(--space-md);
}

/* Services Section */
.services {
    background: rgba(18, 18, 26, 0.75);
    backdrop-filter: blur(10px);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--space-lg);
}

.services-grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 968px) {
    .services-grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .services-grid-4 {
        grid-template-columns: 1fr;
    }
}

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

.service-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.service-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(99, 102, 241, 0.1);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-lg);
}

.service-icon svg {
    width: 24px;
    height: 24px;
    color: var(--color-primary-light);
}

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

.service-card p {
    font-size: 0.95rem;
}

/* Expertise Section */
.expertise-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

.expertise-content {
    background: rgba(10, 10, 15, 0.75);
    padding: var(--space-2xl);
    border-radius: var(--radius-xl);
    backdrop-filter: blur(10px);
    border: 1px solid var(--color-border);
}

.expertise-content h2 {
    margin-bottom: var(--space-lg);
}

.expertise-content > p {
    margin-bottom: var(--space-2xl);
}

.expertise-list {
    list-style: none;
}

.expertise-list li {
    padding: var(--space-md) 0;
    border-bottom: 1px solid var(--color-border);
}

.expertise-list li:last-child {
    border-bottom: none;
}

.expertise-list strong {
    display: block;
    color: var(--color-text);
    margin-bottom: var(--space-xs);
}

.expertise-list span {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

/* Code Block */
.code-block {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.code-header {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-lg);
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
}

.code-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--color-border-light);
}

.code-dot:nth-child(1) { background: #ff5f57; }
.code-dot:nth-child(2) { background: #ffbd2e; }
.code-dot:nth-child(3) { background: #28c840; }

.code-title {
    margin-left: auto;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.code-block pre {
    padding: var(--space-lg);
    overflow-x: auto;
}

.code-block code {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    line-height: 1.7;
    color: var(--color-text-secondary);
}

.code-comment { color: var(--color-text-muted); }
.code-keyword { color: var(--color-accent-secondary); }
.code-fn { color: var(--color-accent); }
.code-num { color: #f59e0b; }

/* About Section */
.about {
    background: rgba(18, 18, 26, 0.75);
    backdrop-filter: blur(10px);
}

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

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

.feature-number {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--color-primary-light);
    margin-bottom: var(--space-md);
}

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

/* Contact Section */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: var(--space-3xl);
    align-items: start;
}

.contact-info {
    background: rgba(10, 10, 15, 0.75);
    padding: var(--space-2xl);
    border-radius: var(--radius-xl);
    backdrop-filter: blur(10px);
    border: 1px solid var(--color-border);
}

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

.contact-info > p {
    margin-bottom: var(--space-2xl);
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.contact-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

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

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

/* Contact Form */
.contact-form {
    background: var(--color-bg-card);
    padding: var(--space-2xl);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
}

.form-group {
    margin-bottom: var(--space-lg);
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: var(--space-sm);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--space-md);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text);
    font-family: var(--font-sans);
    font-size: 1rem;
    transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* Footer */
.footer {
    padding: var(--space-3xl) 0 var(--space-xl);
    border-top: 1px solid var(--color-border);
    background: rgba(10, 10, 15, 0.85);
    backdrop-filter: blur(10px);
}

.footer-content {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.footer-brand {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    font-weight: 500;
    margin-bottom: var(--space-sm);
}

.footer-brand .logo-oz {
    width: 32px;
    height: 32px;
}

.footer-tagline {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--space-xl);
    border-top: 1px solid var(--color-border);
}

.footer-bottom p {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

/* Responsive Design */
@media (max-width: 968px) {
    .expertise-grid,
    .contact-grid {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }

    .expertise-visual {
        order: -1;
    }
}

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

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

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

    .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);
    }

    .hero-cta {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 300px;
    }

    section {
        padding: var(--space-3xl) 0;
    }
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-content > * {
    animation: fadeInUp 0.8s ease forwards;
    opacity: 0;
}

.hero-badge { animation-delay: 0.1s; }
.hero h1 { animation-delay: 0.2s; }
.hero-subtitle { animation-delay: 0.3s; }
.hero-cta { animation-delay: 0.4s; }
.hero-note { animation-delay: 0.5s; }

/* ============================================
   About Section - Enhanced
   ============================================ */

.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: var(--space-3xl);
    align-items: start;
}

.about-bio {
    background: rgba(10, 10, 15, 0.75);
    padding: var(--space-2xl);
    border-radius: var(--radius-xl);
    backdrop-filter: blur(10px);
    border: 1px solid var(--color-border);
}

.about-bio p {
    margin-bottom: var(--space-lg);
    line-height: 1.8;
}

.about-bio p:last-child {
    margin-bottom: 0;
}

.credential-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    margin-bottom: var(--space-lg);
}

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

.credential-card h4 {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-primary-light);
    margin-bottom: var(--space-md);
}

.credential-card ul {
    list-style: none;
}

.credential-card li {
    padding: var(--space-sm) 0;
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    border-bottom: 1px solid var(--color-border);
}

.credential-card li:last-child {
    border-bottom: none;
}

.credential-card li strong {
    color: var(--color-text);
    display: block;
}

.credential-card li em {
    color: var(--color-accent);
}

.credential-links {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.credential-links a {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--color-primary-light);
    font-size: 0.9rem;
    transition: color var(--transition-fast);
}

.credential-links a:hover {
    color: var(--color-accent);
}

/* ============================================
   Page Hero (subpages)
   ============================================ */

.page-hero {
    min-height: 50vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: calc(var(--nav-height) + var(--space-3xl)) var(--space-lg) var(--space-3xl);
}

.page-hero-content {
    max-width: 700px;
    text-align: center;
    background: rgba(10, 10, 15, 0.75);
    padding: var(--space-2xl) var(--space-3xl);
    border-radius: var(--radius-xl);
    backdrop-filter: blur(10px);
    border: 1px solid var(--color-border);
}

.page-hero-content h1 {
    margin-bottom: var(--space-md);
}

.page-hero-content > p {
    color: var(--color-text-secondary);
    font-size: 1.1rem;
}

.page-hero-content > * {
    animation: fadeInUp 0.8s ease forwards;
    opacity: 0;
}

.page-hero-content .section-tag { animation-delay: 0.1s; }
.page-hero-content h1 { animation-delay: 0.2s; }
.page-hero-content > p { animation-delay: 0.3s; }

/* Active nav link */
.nav-active {
    color: var(--color-text) !important;
}

/* ============================================
   Projects Page
   ============================================ */

.projects-section {
    background: rgba(18, 18, 26, 0.75);
    backdrop-filter: blur(10px);
    padding: var(--space-4xl) 0;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: var(--space-xl);
}

.project-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl);
    transition: all var(--transition-base);
}

.project-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.project-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
}

.project-tag {
    display: inline-block;
    padding: var(--space-xs) var(--space-md);
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.project-tag-journal {
    background: rgba(99, 102, 241, 0.15);
    color: var(--color-primary-light);
    border: 1px solid rgba(99, 102, 241, 0.3);
}

.project-tag-role {
    background: rgba(34, 211, 238, 0.1);
    color: var(--color-accent);
    border: 1px solid rgba(34, 211, 238, 0.2);
}

.project-tag-status {
    background: rgba(168, 85, 247, 0.1);
    color: var(--color-accent-secondary);
    border: 1px solid rgba(168, 85, 247, 0.2);
}

.project-card h3 {
    margin-bottom: var(--space-md);
    font-size: 1.15rem;
}

.project-card > p {
    font-size: 0.95rem;
    line-height: 1.7;
}

.project-impact {
    margin-top: var(--space-md);
    font-size: 0.85rem !important;
    color: var(--color-text-muted) !important;
    font-style: italic;
}

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

.publications-section {
    padding: var(--space-4xl) 0;
}

.publications-list {
    max-width: 800px;
    margin: 0 auto;
}

.pub-item {
    padding: var(--space-lg) 0;
    border-bottom: 1px solid var(--color-border);
}

.pub-item:last-child {
    border-bottom: none;
}

.pub-year {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--color-primary-light);
    margin-bottom: var(--space-xs);
}

.pub-title {
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: var(--space-xs);
}

.pub-authors {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-xs);
}

.pub-journal {
    font-size: 0.85rem;
    color: var(--color-accent);
    font-style: italic;
}

.pub-note {
    margin-top: var(--space-lg);
    font-size: 0.8rem;
    color: var(--color-text-muted);
    font-style: italic;
}

.inline-link {
    color: var(--color-primary-light);
    text-decoration: underline;
    text-underline-offset: 2px;
    transition: color var(--transition-fast);
}

.inline-link:hover {
    color: var(--color-accent);
}

/* ============================================
   Headshot
   ============================================ */

.about-headshot {
    width: 160px;
    height: 160px;
    border-radius: 50%;
    overflow: hidden;
    margin: 0 auto var(--space-xl);
    border: 3px solid var(--color-border-light);
    background: var(--color-surface);
    display: flex;
    align-items: center;
    justify-content: center;
}

.about-headshot img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* ============================================
   Contact Section - Centered (mailto)
   ============================================ */

.contact-centered {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
    background: rgba(10, 10, 15, 0.75);
    padding: var(--space-3xl);
    border-radius: var(--radius-xl);
    backdrop-filter: blur(10px);
    border: 1px solid var(--color-border);
}

.contact-centered .section-tag {
    margin-bottom: var(--space-md);
}

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

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

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

.contact-email-link {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

.contact-email-link:hover {
    color: var(--color-primary-light);
}

/* ============================================
   Testimonials (hidden until populated)
   ============================================ */

.testimonials {
    background: rgba(18, 18, 26, 0.75);
    backdrop-filter: blur(10px);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-xl);
}

.testimonial-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl);
}

.testimonial-card blockquote p {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--color-text-secondary);
    font-style: italic;
    margin-bottom: var(--space-lg);
}

.testimonial-author strong {
    display: block;
    color: var(--color-text);
    font-size: 0.95rem;
}

.testimonial-author span {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

/* ============================================
   Logo (OZ Labs eye SVG)
   ============================================ */

.logo-eye {
    width: 48px;
    height: 48px;
    flex-shrink: 0;
}

.logo-eye-sm {
    width: 32px;
    height: 32px;
}

/* ============================================
   Service Tabs (services.html)
   ============================================ */

.tabs-section {
    background: rgba(13, 13, 24, 0.75);
    backdrop-filter: blur(10px);
    padding: var(--space-4xl) 0;
}

.tabs-nav {
    display: flex;
    gap: var(--space-xs);
    margin-bottom: var(--space-3xl);
    border-bottom: 1px solid var(--color-border);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}

.tabs-nav::-webkit-scrollbar {
    display: none;
}

.tab-btn {
    padding: var(--space-md) var(--space-xl);
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--color-text-muted);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
}

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

.tab-btn.active {
    color: var(--color-accent);
    border-bottom-color: var(--color-accent);
}

/* Viz controls panel */
.viz-controls {
    background: rgba(13, 13, 24, 0.8);
    backdrop-filter: blur(10px);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-md) var(--space-lg);
    margin-bottom: var(--space-lg);
    text-align: center;
}

.viz-controls-header {
    margin-bottom: var(--space-sm);
}

.viz-label {
    color: var(--color-text-secondary);
    font-size: 0.85rem;
    font-family: var(--font-mono);
}

.viz-params {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md) var(--space-xl);
    justify-content: center;
    align-items: center;
}

.viz-param {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.8rem;
    color: var(--color-text-secondary);
}

.viz-param label {
    white-space: nowrap;
}

.viz-param input[type="range"] {
    width: 100px;
    accent-color: var(--color-accent);
    cursor: pointer;
}

.viz-param select {
    background: var(--color-bg-card);
    color: var(--color-text);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 2px 6px;
    font-size: 0.8rem;
    font-family: var(--font-sans);
    cursor: pointer;
}

.viz-param select:focus {
    outline: 1px solid var(--color-accent);
}

@media (max-width: 768px) {
    .viz-params {
        flex-direction: column;
        gap: var(--space-sm);
    }
    .viz-param input[type="range"] {
        width: 80px;
    }
}

.tab-content {
    display: none;
    animation: fadeIn 0.3s ease;
}

.tab-content.active {
    display: block;
}

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

.tab-panel {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-3xl);
}

.tab-panel h3 {
    font-size: 1.5rem;
    margin-bottom: var(--space-lg);
    text-align: center;
}

.tab-panel > p {
    line-height: 1.8;
    margin-bottom: var(--space-lg);
}

.tab-offerings {
    list-style: none;
    margin-bottom: var(--space-2xl);
}

.tab-offerings li {
    padding: var(--space-sm) 0;
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    display: flex;
    align-items: baseline;
    gap: var(--space-sm);
}

.tab-offerings li::before {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--color-accent);
    border-radius: 50%;
    flex-shrink: 0;
    margin-top: 0.5em;
}

.tab-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-bottom: var(--space-2xl);
}

/* ============================================
   Tech Badges
   ============================================ */

.tech-badge {
    display: inline-block;
    padding: var(--space-xs) var(--space-md);
    background: rgba(0, 240, 255, 0.08);
    border: 1px solid rgba(0, 240, 255, 0.15);
    border-radius: 100px;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-accent);
}

/* ============================================
   Portfolio additions
   ============================================ */

.portfolio-section-heading {
    margin-bottom: var(--space-2xl);
}

.portfolio-section-heading h3 {
    font-size: 1.25rem;
    color: var(--color-text);
    margin-bottom: var(--space-sm);
}

.portfolio-section-heading p {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.project-tag-type {
    background: rgba(0, 255, 136, 0.1);
    color: var(--color-green);
    border: 1px solid rgba(0, 255, 136, 0.2);
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    margin-top: var(--space-lg);
    padding: var(--space-sm) var(--space-lg);
    background: rgba(0, 240, 255, 0.08);
    border: 1px solid rgba(0, 240, 255, 0.2);
    border-radius: var(--radius-md);
    color: var(--color-accent);
    font-size: 0.85rem;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.project-link:hover {
    background: rgba(0, 240, 255, 0.15);
    border-color: var(--color-accent);
}

.project-link svg {
    width: 14px;
    height: 14px;
}

/* ============================================
   About Page - Tech Skills
   ============================================ */

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--space-lg);
}

.skill-category {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
}

.skill-category h4 {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-accent);
    margin-bottom: var(--space-md);
}

.skill-category .tech-badges {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

/* ============================================
   About Teaser (index.html)
   ============================================ */

.about-teaser {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
    background: rgba(6, 6, 12, 0.75);
    padding: var(--space-3xl);
    border-radius: var(--radius-xl);
    backdrop-filter: blur(10px);
    border: 1px solid var(--color-border);
}

.about-teaser .about-headshot {
    margin-bottom: var(--space-xl);
}

.about-teaser p {
    margin-bottom: var(--space-xl);
    line-height: 1.8;
}

.about-teaser .btn {
    margin-top: var(--space-md);
}

/* ============================================
   Responsive - all sections
   ============================================ */

@media (max-width: 968px) {
    .about-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .page-hero-content {
        padding: var(--space-xl) var(--space-lg);
    }

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

    .contact-centered {
        padding: var(--space-xl);
    }

    .tab-btn {
        padding: var(--space-sm) var(--space-lg);
        font-size: 0.85rem;
    }

    .tab-panel {
        padding: var(--space-xl);
    }

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