@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@300;400;500;600;700&family=Inter:wght@300;400;500;600&display=swap');

:root {
    /* Color Palette - Oceanic Intelligence Framework */
    --base-surface: #02161d;
    --surface-low: #0a1e25;
    --surface-mid: #0e2229;
    --surface-high: #192d34;
    --surface-highest: #24373f;
    --surface-bright: #293c44;
    
    --primary: #53d8e3; /* Technical Cyan */
    --primary-container: #00afb9;
    --on-primary: #00363a;
    
    --secondary: #a5cbea; /* Supporting Blue */
    --secondary-container: #264d67;
    
    --text-primary: #d1e6f0;
    --text-secondary: #bbc9ca;
    
    --outline: #3c494a;
    --outline-variant: rgba(60, 73, 74, 0.2);
    
    /* Typography */
    --font-heading: 'Space Grotesk', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 3rem;
    --spacing-xl: 6rem;
    
    /* Transitions */
    --transition-smooth: 400ms cubic-bezier(0.23, 1, 0.32, 1);
}

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

body {
    background-color: var(--base-surface);
    color: var(--text-primary);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, .font-heading {
    font-family: var(--font-heading);
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

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

/* Layout Utilities */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

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

/* Glassmorphism */
.glass-panel {
    background: rgba(36, 55, 63, 0.4);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--outline-variant);
    border-radius: 4px;
}

/* HUD Accents */
.hud-card {
    position: relative;
    padding: var(--spacing-md);
    background: var(--surface-low);
    transition: var(--transition-smooth);
    border-top: 1px solid var(--outline-variant);
}

.hud-card:hover {
    background: var(--surface-mid);
    border-top: 1px solid var(--primary);
    transform: translateY(-4px);
}

.hud-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 10px;
    height: 1px;
    background: var(--primary);
}

/* Buttons */
.btn-primary {
    display: inline-block;
    padding: 0.75rem 2rem;
    background: var(--primary);
    color: var(--on-primary);
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.875rem;
    border-radius: 2px;
    cursor: pointer;
    border: none;
    transition: var(--transition-smooth);
}

.btn-primary:hover {
    background: #77f5ff;
    box-shadow: 0 0 20px rgba(83, 216, 227, 0.3);
    transform: translateY(-2px);
}

.btn-outline {
    display: inline-block;
    padding: 0.75rem 2rem;
    background: transparent;
    border: 1px solid var(--primary);
    color: var(--primary);
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.875rem;
    border-radius: 2px;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.btn-outline:hover {
    background: rgba(83, 216, 227, 0.1);
    transform: translateY(-2px);
}

/* Navigation */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    padding: var(--spacing-sm) 0;
    transition: var(--transition-smooth);
}

nav.scrolled {
    background: rgba(2, 22, 29, 0.8);
    backdrop-filter: blur(10px);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--primary);
    font-size: 1.25rem;
}

.nav-links {
    list-style: none;
    display: flex;
    gap: var(--spacing-lg);
}

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

/* Hero Section (Carousel) */
.hero {
    min-height: 100vh;
    position: relative;
    overflow: hidden;
    padding: 0;
    display: block;
}

.carousel-container {
    height: 100vh;
    position: relative;
}

.carousel-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease-in-out;
    display: flex;
    align-items: center;
    background-size: cover;
    background-position: center;
    z-index: 1;
}

.carousel-slide.active {
    opacity: 1;
    z-index: 2;
}

.hero-actions {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
}

/* Carousel Controls */
.carousel-controls {
    position: absolute;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    background: rgba(2, 22, 29, 0.4);
    backdrop-filter: blur(10px);
    padding: 0.5rem 1.5rem;
    border-radius: 50px;
    border: 1px solid var(--outline-variant);
}

.carousel-btn {
    background: none;
    border: none;
    color: var(--primary);
    font-size: 1.5rem;
    cursor: pointer;
    transition: var(--transition-smooth);
    padding: 0.5rem;
}

.carousel-btn:hover {
    color: #fff;
    transform: scale(1.1);
}

.carousel-dots {
    display: flex;
    gap: 0.5rem;
}

.social-links {
    margin-bottom: var(--spacing-md);
}

.social-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem;
    color: var(--text-secondary);
    border: 1px solid var(--outline-variant);
    border-radius: 4px;
    transition: var(--transition-smooth);
}

.social-icon:hover {
    color: var(--primary);
    border-color: var(--primary);
    background: rgba(83, 216, 227, 0.05);
    box-shadow: 0 0 15px rgba(83, 216, 227, 0.2);
    transform: translateY(-3px);
}

.dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--outline);
    cursor: pointer;
    transition: var(--transition-smooth);
}

.dot.active {
    background: var(--primary);
    box-shadow: 0 0 10px var(--primary);
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.hero-content h1 {
    font-size: 4rem;
    line-height: 0.9;
    margin-bottom: var(--spacing-md);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--secondary);
    margin-bottom: var(--spacing-lg);
}

.profile-frame {
    position: relative;
    width: 450px;
    height: 550px;
    margin: 0 auto;
}

.profile-photo {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 4px;
    transition: var(--transition-smooth);
    filter: grayscale(20%);
}

.profile-frame::after {
    content: '';
    position: absolute;
    top: -20px;
    right: -20px;
    width: 100%;
    height: 100%;
    border: 1px solid var(--primary);
    z-index: -1;
    opacity: 0.3;
}

/* Research Cards */
.research-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: var(--spacing-lg);
}

.paper-card {
    padding: var(--spacing-md);
}

.paper-year {
    font-family: var(--font-heading);
    font-size: 0.75rem;
    color: var(--primary);
    margin-bottom: 0.5rem;
    display: block;
}

.paper-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.paper-authors {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Connect Section */
.connect-panel {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-md);
}

.email-link {
    font-size: 2rem;
    font-family: var(--font-heading);
    color: var(--primary);
    display: block;
    margin: var(--spacing-lg) 0;
}

/* Network Visualization (Portal Diagram) */
#portal-diagram {
    width: 100%;
    height: 600px;
    background: var(--surface-low);
    border-radius: 8px;
    margin-top: var(--spacing-lg);
}

/* Mobile Responsive */
@media (max-width: 1024px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    .hero-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .profile-frame {
        width: 300px;
        height: 400px;
        order: -1;
    }
    .hero-content h1 {
        font-size: 2.5rem;
    }
}