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

:root {
    /* Dark Theme Colors */
    --bg-primary: #0a0a0a;
    --bg-secondary: #111111;
    --bg-tertiary: #1a1a1a;
    --bg-card: #1f1f1f;
    --bg-glass: rgba(26, 26, 26, 0.8);
    
    /* Accent Colors */
    --accent-primary: #00d4ff;
    --accent-secondary: #0099cc;
    --accent-thorium: #ff6b35;
    --accent-uranium: #4ade80;
    --accent-smr: #8b5cf6;
    
    /* Text Colors */
    --text-primary: #ffffff;
    --text-secondary: #cccccc;
    --text-muted: #888888;
    --text-accent: var(--accent-primary);
    
    /* Border & Effects */
    --border-color: #333333;
    --shadow-light: rgba(0, 212, 255, 0.1);
    --shadow-glow: rgba(0, 212, 255, 0.3);
    
    /* Typography */
    --font-primary: 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    /* Layout */
    --container-width: 1200px;
    --section-padding: 5rem 0;
}

html {
    scroll-behavior: smooth;
}

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

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 2rem;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: var(--bg-glass);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: var(--container-width);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.nav-logo i {
    color: var(--accent-primary);
    animation: rotate 10s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-primary);
    transition: width 0.3s ease;
}

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

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    transition: 0.3s;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 80%, rgba(0, 212, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 107, 53, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(139, 92, 246, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 2rem;
    position: relative;
    z-index: 2;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.gradient-text {
    background: linear-gradient(45deg, var(--accent-primary), var(--accent-thorium));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(45deg, var(--accent-primary), var(--accent-secondary));
    color: white;
    box-shadow: 0 4px 15px rgba(0, 212, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 212, 255, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--accent-primary);
    border: 2px solid var(--accent-primary);
}

.btn-secondary:hover {
    background: var(--accent-primary);
    color: var(--bg-primary);
    transform: translateY(-2px);
}

/* Atom Animation */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.atom-animation {
    position: relative;
    width: 300px;
    height: 300px;
}

.nucleus {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 20px;
    height: 20px;
    background: radial-gradient(circle, var(--accent-primary), var(--accent-secondary));
    border-radius: 50%;
    box-shadow: 0 0 20px var(--shadow-glow);
    animation: pulse 2s ease-in-out infinite;
}

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

.electron-orbit {
    position: absolute;
    top: 50%;
    left: 50%;
    border: 1px solid rgba(0, 212, 255, 0.3);
    border-radius: 50%;
    transform: translate(-50%, -50%);
}

.orbit-1 {
    width: 100px;
    height: 100px;
    animation: orbit 4s linear infinite;
}

.orbit-2 {
    width: 150px;
    height: 150px;
    animation: orbit 6s linear infinite reverse;
}

.orbit-3 {
    width: 200px;
    height: 200px;
    animation: orbit 8s linear infinite;
}

@keyframes orbit {
    from { transform: translate(-50%, -50%) rotate(0deg); }
    to { transform: translate(-50%, -50%) rotate(360deg); }
}

.electron {
    position: absolute;
    width: 8px;
    height: 8px;
    background: var(--accent-primary);
    border-radius: 50%;
    top: -4px;
    left: 50%;
    transform: translateX(-50%);
    box-shadow: 0 0 10px var(--accent-primary);
}

/* Hero Stats */
.hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 4rem;
    max-width: var(--container-width);
    margin-left: auto;
    margin-right: auto;
    padding: 0 2rem;
}

.stat {
    text-align: center;
    padding: 2rem;
    background: var(--bg-card);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease;
}

.stat:hover {
    transform: translateY(-5px);
}

.stat h3 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent-primary);
    margin-bottom: 0.5rem;
}

.stat p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Sections */
section {
    padding: var(--section-padding);
    position: relative;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--text-primary);
}

/* Research Section */
.research-section {
    background: var(--bg-secondary);
}

.research-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.research-card {
    background: var(--bg-card);
    padding: 2.5rem;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.research-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--accent-primary);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.research-card:hover::before {
    transform: scaleX(1);
}

.research-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.card-icon {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
}

.card-icon.thorium {
    background: linear-gradient(45deg, var(--accent-thorium), rgba(255, 107, 53, 0.3));
    color: var(--accent-thorium);
}

.card-icon.uranium {
    background: linear-gradient(45deg, var(--accent-uranium), rgba(74, 222, 128, 0.3));
    color: var(--accent-uranium);
}

.card-icon.smr {
    background: linear-gradient(45deg, var(--accent-smr), rgba(139, 92, 246, 0.3));
    color: var(--accent-smr);
}

.research-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.research-card p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.features {
    list-style: none;
}

.features li {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    padding-left: 1.5rem;
    position: relative;
}

.features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent-primary);
    font-weight: bold;
}

/* News Section */
.news-section {
    background: var(--bg-primary);
}

.news-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 2rem;
    margin-bottom: 4rem;
}

.news-card {
    background: var(--bg-card);
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.news-card.featured {
    grid-row: span 2;
}

.news-image {
    height: 200px;
    background: linear-gradient(45deg, var(--accent-primary), var(--accent-secondary));
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.news-category {
    background: var(--bg-primary);
    color: var(--accent-primary);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
}

.news-content {
    padding: 1.5rem;
}

.news-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
    line-height: 1.4;
}

.news-excerpt {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.6;
}

.news-meta {
    display: flex;
    gap: 1rem;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.news-subscribe {
    text-align: center;
    padding: 3rem;
    background: var(--bg-card);
    border-radius: 16px;
    border: 1px solid var(--border-color);
}

.news-subscribe h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.news-subscribe p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.subscribe-form {
    display: flex;
    gap: 1rem;
    max-width: 400px;
    margin: 0 auto;
}

.subscribe-form input {
    flex: 1;
    padding: 1rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    font-size: 1rem;
}

.subscribe-form input:focus {
    outline: none;
    border-color: var(--accent-primary);
}

/* Technology Comparison */
.tech-comparison {
    background: var(--bg-secondary);
}

.comparison-table {
    background: var(--bg-card);
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.tech-header {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
    background: var(--bg-tertiary);
    padding: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.tech-row {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    align-items: center;
    transition: background 0.3s ease;
}

.tech-row:hover {
    background: var(--bg-tertiary);
}

.tech-row:last-child {
    border-bottom: none;
}

.tech-name {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.tech-name i {
    font-size: 1.25rem;
    color: var(--accent-primary);
}

.tech-score {
    padding: 0.5rem 1rem;
    border-radius: 20px;
    text-align: center;
    font-weight: 500;
    font-size: 0.9rem;
}

.tech-score.excellent {
    background: rgba(74, 222, 128, 0.2);
    color: var(--accent-uranium);
}

.tech-score.good {
    background: rgba(0, 212, 255, 0.2);
    color: var(--accent-primary);
}

.tech-score.fair {
    background: rgba(255, 107, 53, 0.2);
    color: var(--accent-thorium);
}

/* About Section */
.about-section {
    background: var(--bg-primary);
}

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

.about-text {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    line-height: 1.8;
}

.mission-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.mission-item {
    text-align: center;
    padding: 2rem;
}

.mission-item i {
    font-size: 2.5rem;
    color: var(--accent-primary);
    margin-bottom: 1rem;
}

.mission-item h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.mission-item p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Footer */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    color: var(--text-primary);
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

.footer-section h4 {
    color: var(--text-primary);
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.footer-section p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.6;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: var(--accent-primary);
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--bg-card);
    color: var(--text-secondary);
    border-radius: 8px;
    text-decoration: none;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: var(--accent-primary);
    color: var(--bg-primary);
    transform: translateY(-2px);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .hamburger {
        display: flex;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .news-grid {
        grid-template-columns: 1fr;
    }
    
    .tech-header,
    .tech-row {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .tech-header {
        display: none;
    }
    
    .tech-name {
        font-size: 1.1rem;
        margin-bottom: 1rem;
    }
    
    .subscribe-form {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .hero-stats {
        grid-template-columns: 1fr;
    }
    
    .research-grid {
        grid-template-columns: 1fr;
    }
    
    .mission-grid {
        grid-template-columns: 1fr;
    }
}