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

:root {
    --primary-bg: #0a0a0f;
    --secondary-bg: #1a1a2e;
    --accent-bg: #16213e;
    --primary-text: #ffffff;
    --secondary-text: #b8c5d6;
    --accent-blue: #00d4ff;
    --accent-purple: #8b5cf6;
    --accent-cyan: #06b6d4;
    --accent-pink: #ec4899;
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-accent: linear-gradient(135deg, #00d4ff 0%, #8b5cf6 100%);
    --shadow-glow: 0 0 20px rgba(0, 212, 255, 0.3);
    --shadow-purple: 0 0 30px rgba(139, 92, 246, 0.4);
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Orbitron', monospace;
    font-weight: 700;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.title-prefix {
    display: block;
    font-size: 1rem;
    color: var(--accent-blue);
    margin-bottom: 0.5rem;
    font-weight: 400;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(10, 10, 15, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 1rem 0;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-text {
    font-family: 'Orbitron', monospace;
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

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

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

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

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

.cta-nav {
    background: var(--gradient-accent);
    padding: 0.5rem 1.5rem;
    border-radius: 25px;
    color: white !important;
}

.cta-nav:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--primary-text);
    margin: 3px 0;
    transition: 0.3s;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.stars {
    position: absolute;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(2px 2px at 20px 30px, #eee, transparent),
        radial-gradient(2px 2px at 40px 70px, rgba(255,255,255,0.8), transparent),
        radial-gradient(1px 1px at 90px 40px, #fff, transparent),
        radial-gradient(1px 1px at 130px 80px, rgba(255,255,255,0.6), transparent),
        radial-gradient(2px 2px at 160px 30px, #ddd, transparent);
    background-repeat: repeat;
    background-size: 200px 100px;
    animation: twinkle 20s linear infinite;
}

@keyframes twinkle {
    0% { opacity: 0.3; }
    50% { opacity: 1; }
    100% { opacity: 0.3; }
}

.constellation-lines {
    position: absolute;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(45deg, transparent 40%, rgba(0, 212, 255, 0.1) 50%, transparent 60%),
        linear-gradient(-45deg, transparent 40%, rgba(139, 92, 246, 0.1) 50%, transparent 60%);
    background-size: 300px 300px;
    animation: constellation-bg-move 30s linear infinite;
}

@keyframes constellation-bg-move {
    from { background-position: 0 0; }
    to { background-position: -300px -300px; }
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.hero-title {
    font-size: 3.5rem;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.title-line {
    display: block;
}

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

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--secondary-text);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.highlight-text {
    color: var(--accent-blue);
    font-weight: 600;
}

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

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.cta-button.primary {
    background: var(--gradient-accent);
    color: white;
    box-shadow: var(--shadow-glow);
}

.cta-button.primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.4);
}

.cta-button.secondary {
    background: transparent;
    color: var(--accent-blue);
    border: 2px solid var(--accent-blue);
}

.cta-button.secondary:hover {
    background: var(--accent-blue);
    color: white;
    transform: translateY(-3px);
}

.cta-button.large {
    padding: 1.5rem 3rem;
    font-size: 1.2rem;
}

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

.floating-sphere {
    position: relative;
    width: 300px;
    height: 300px;
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

.sphere-core {
    width: 100px;
    height: 100px;
    background: var(--gradient-accent);
    border-radius: 50%;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    box-shadow: 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(1.1); }
}

.sphere-rings {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.ring {
    position: absolute;
    border: 2px solid rgba(0, 212, 255, 0.3);
    border-radius: 50%;
    animation: rotate 20s linear infinite;
}

.ring-1 {
    width: 150px;
    height: 150px;
    animation-duration: 20s;
}

.ring-2 {
    width: 200px;
    height: 200px;
    animation-duration: 15s;
    animation-direction: reverse;
}

.ring-3 {
    width: 250px;
    height: 250px;
    animation-duration: 25s;
}

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

/* Visualization Section */
.visualization {
    padding: 6rem 0;
    background: var(--secondary-bg);
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-description {
    font-size: 1.1rem;
    color: var(--secondary-text);
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.8;
}

.demo-container {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
    align-items: start;
}

.demo-frame-wrapper {
    background: var(--accent-bg);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow-purple);
    position: relative;
}

.demo-iframe {
    width: 100%;
    height: 600px;
    border: none;
    display: block;
}

.demo-controls {
    background: var(--accent-bg);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: var(--shadow-purple);
}

.control-info h3 {
    color: var(--accent-blue);
    margin-bottom: 1rem;
}

.control-info ul {
    list-style: none;
}

.control-info li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.8rem;
    color: var(--secondary-text);
}

.control-info i {
    color: var(--accent-purple);
    width: 20px;
}

/* Features Section */
.features {
    padding: 6rem 0;
    background: var(--primary-bg);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--secondary-bg);
    padding: 2.5rem;
    border-radius: 15px;
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid rgba(0, 212, 255, 0.1);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-glow);
    border-color: var(--accent-blue);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 2rem;
    color: white;
}

.feature-card h3 {
    color: var(--accent-blue);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

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

/* About Section */
.about {
    padding: 6rem 0;
    background: var(--secondary-bg);
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    align-items: start;
}

.about-description {
    color: var(--secondary-text);
    margin-bottom: 1.5rem;
    line-height: 1.8;
    font-size: 1.1rem;
}

.team-lead {
    margin-top: 2rem;
    padding: 1.5rem;
    background: var(--accent-bg);
    border-radius: 10px;
    border-left: 4px solid var(--accent-blue);
}

.team-lead h3 {
    color: var(--accent-blue);
    margin-bottom: 0.5rem;
}

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

.institutions h3 {
    color: var(--accent-purple);
    margin-bottom: 1.5rem;
}

.institution-logos {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    align-items: center;
}

.institution-logo {
    max-height: 60px;
    width: auto;
    object-fit: contain;
    filter: brightness(0) invert(1) opacity(0.8);
    transition: all 0.3s ease;
}

.institution-logo:hover {
    filter: none;
    transform: scale(1.05);
}

/* CTA Section */
.cta-section {
    padding: 6rem 0;
    background: var(--primary-bg);
    text-align: center;
}

.cta-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.cta-content p {
    font-size: 1.2rem;
    color: var(--secondary-text);
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Footer */
.footer {
    background: var(--secondary-bg);
    padding: 3rem 0 1rem;
    border-top: 1px solid rgba(0, 212, 255, 0.1);
}

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

.footer-section h3,
.footer-section h4 {
    color: var(--accent-blue);
    margin-bottom: 1rem;
}

.footer-section p,
.footer-section li {
    color: var(--secondary-text);
    margin-bottom: 0.5rem;
}

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

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

.footer-section a:hover {
    color: var(--accent-blue);
}

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

.social-link {
    width: 40px;
    height: 40px;
    background: var(--accent-bg);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.social-link:hover {
    background: var(--gradient-accent);
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(0, 212, 255, 0.1);
    color: var(--secondary-text);
}

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

.fade-in {
    animation: fadeInUp 0.8s ease-out;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-cta {
        justify-content: center;
    }
    
    .floating-sphere {
        width: 200px;
        height: 200px;
    }
    
    .demo-container {
        grid-template-columns: 1fr;
    }
    
    .demo-iframe {
        height: 400px;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .cta-content h2 {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .cta-button {
        padding: 0.8rem 1.5rem;
        font-size: 0.9rem;
    }
    
    .feature-card {
        padding: 2rem;
    }
    
    .demo-iframe {
        height: 300px;
    }
}

/* Scroll Animations */
.scroll-animate {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.scroll-animate.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Loading Animation */
.loading {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--primary-bg);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 3px solid var(--accent-bg);
    border-top: 3px solid var(--accent-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}