/* Import Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;700;900&family=Exo+2:wght@300;400;600&display=swap');

/* CSS Variables for Consistent Theming */
:root {
    --primary-bg: #0a0a0a;
    --secondary-bg: #1a1a2e;
    --accent-bg: #16213e;
    --cosmic-purple: #8a2be2;
    --cosmic-blue: #4169e1;
    --neon-cyan: #00f0ff;
    --neon-purple: #bf00ff;
    --deep-space: #0f0f23;
    --star-white: #ffffff;
    --text-gray: #b8b8b8;
    --gradient-cosmic: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-galaxy: linear-gradient(45deg, #0a0a2a, #2a0a4a, #4a0a6a, #0a0a2a);
    --gradient-nebula: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    --shadow-neon: 0 0 20px rgba(0, 240, 255, 0.3);
    --shadow-purple: 0 0 30px rgba(138, 43, 226, 0.4);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Exo 2', sans-serif;
    background: var(--primary-bg);
    color: var(--star-white);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Logo Styles */
.nav-logo {
    width: 200px;
    height: 40px;
    margin-right: 1rem;
}

.main-logo {
    width: auto;
    height: auto;
    margin-bottom: 2rem;
    display: block;
    margin: 0 auto;
}

.footer-logo-img {
    width: 200px;
    height: 40px;
    display: block;
    margin: 0 auto 2rem;
}

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

.section-title {
    font-size: 3rem;
    text-align: center;
    margin-bottom: 3rem;
    background: var(--gradient-nebula);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 30px rgba(102, 126, 234, 0.5);
}

/* Header and Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(26, 26, 46, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 240, 255, 0.2);
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    background: rgba(10, 10, 10, 0.98);
    box-shadow: var(--shadow-neon);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.nav-logo {
    height: 50px;
    width: auto;
    max-width: 220px;
    object-fit: contain;
    filter: drop-shadow(0 0 12px rgba(0, 240, 255, 0.6)) brightness(1.1) contrast(1.1) saturate(1.1);
    image-rendering: -webkit-optimize-contrast;
    image-rendering: -moz-crisp-edges;
    image-rendering: crisp-edges;
    image-rendering: pixelated;
    -ms-interpolation-mode: nearest-neighbor;
    transition: all 0.3s ease;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
}

.nav-logo:hover {
    filter: drop-shadow(0 0 18px rgba(0, 240, 255, 0.8)) brightness(1.2) contrast(1.15) saturate(1.15);
    transform: scale(1.05);
}

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

.nav-menu a {
    color: var(--star-white);
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    position: relative;
    transition: all 0.3s ease;
}

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

.nav-menu a:hover::before {
    width: 100%;
}

.nav-menu a:hover {
    color: var(--neon-cyan);
    text-shadow: 0 0 10px var(--neon-cyan);
}

/* Mobile Navigation */
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--neon-cyan);
    margin: 3px 0;
    transition: 0.3s;
    border-radius: 2px;
}

/* Hero Section */
.hero-section {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    background: var(--gradient-galaxy);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('../images/galactic_background.jpg') center/cover;
    opacity: 0.3;
    z-index: 1;
}

.hero-content {
    text-align: center;
    z-index: 3;
    position: relative;
    max-width: 800px;
    padding: 2rem;
}

.hero-logo {
    margin-bottom: 2rem;
}

.main-logo {
    height: 120px;
    filter: drop-shadow(0 0 20px rgba(0, 240, 255, 0.7));
    animation: float 6s ease-in-out infinite;
}

.hero-title {
    font-size: 4rem;
    font-weight: 900;
    margin-bottom: 1.5rem;
    background: var(--gradient-nebula);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 40px rgba(102, 126, 234, 0.8);
    animation: glow 2s ease-in-out infinite alternate;
}

.hero-subtitle {
    font-size: 1.3rem;
    color: var(--text-gray);
    margin-bottom: 2.5rem;
    font-weight: 300;
}

/* Particles Animation */
.hero-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
}

.particle {
    position: absolute;
    width: 2px;
    height: 2px;
    background: var(--neon-cyan);
    border-radius: 50%;
    animation: twinkle 15s linear infinite;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    border: none;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn-primary {
    background: var(--gradient-nebula);
    color: var(--star-white);
    box-shadow: var(--shadow-purple);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 40px rgba(138, 43, 226, 0.6);
}

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

.btn-secondary:hover {
    background: var(--neon-cyan);
    color: var(--primary-bg);
    box-shadow: var(--shadow-neon);
}

.btn-large {
    padding: 1.5rem 3rem;
    font-size: 1.3rem;
}

/* Section Styling */
section {
    padding: 6rem 0;
    position: relative;
}

section:nth-child(even) {
    background: var(--secondary-bg);
}

section:nth-child(odd) {
    background: var(--deep-space);
}

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

.about-content {
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.lead {
    font-size: 1.4rem;
    color: var(--neon-cyan);
    margin-bottom: 2rem;
    font-weight: 400;
}

.about-text p {
    font-size: 1.1rem;
    color: var(--text-gray);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.stat-item {
    text-align: center;
    padding: 2rem;
    background: rgba(0, 240, 255, 0.1);
    border-radius: 15px;
    border: 1px solid rgba(0, 240, 255, 0.3);
    transition: transform 0.3s ease;
}

.stat-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-neon);
}

.stat-number {
    display: block;
    font-size: 3rem;
    font-weight: 900;
    color: var(--neon-cyan);
    font-family: 'Orbitron', monospace;
}

.stat-label {
    font-size: 1rem;
    color: var(--text-gray);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* AI Section */
.ai-section {
    background: var(--deep-space);
}

.ai-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.ai-feature {
    text-align: center;
    padding: 3rem 2rem;
    background: rgba(138, 43, 226, 0.1);
    border-radius: 20px;
    border: 1px solid rgba(138, 43, 226, 0.3);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.ai-feature::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(138, 43, 226, 0.2), transparent);
    transition: left 0.5s ease;
}

.ai-feature:hover::before {
    left: 100%;
}

.ai-feature:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-purple);
}

.feature-icon {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    filter: drop-shadow(0 0 10px rgba(138, 43, 226, 0.7));
}

.ai-feature h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--neon-purple);
}

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

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

.course-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.course-card {
    background: rgba(0, 240, 255, 0.05);
    border: 1px solid rgba(0, 240, 255, 0.2);
    border-radius: 20px;
    padding: 2.5rem;
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

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

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

.course-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-neon);
    background: rgba(0, 240, 255, 0.1);
}

.course-icon {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    filter: drop-shadow(0 0 10px rgba(0, 240, 255, 0.7));
}

.course-card h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: var(--neon-cyan);
}

.course-card p {
    color: var(--text-gray);
    margin-bottom: 2rem;
    line-height: 1.6;
}

.course-features {
    list-style: none;
    margin-bottom: 2rem;
}

.course-features li {
    padding: 0.5rem 0;
    color: var(--text-gray);
    position: relative;
    padding-left: 1.5rem;
}

.course-features li::before {
    content: '✦';
    position: absolute;
    left: 0;
    color: var(--neon-cyan);
}

/* Testimonials Section */
.testimonials-section {
    background: var(--deep-space);
}

.testimonial-slider {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.testimonial-card {
    background: rgba(138, 43, 226, 0.1);
    border: 1px solid rgba(138, 43, 226, 0.3);
    border-radius: 20px;
    padding: 2.5rem;
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
}

.testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-purple);
}

.testimonial-content p {
    font-size: 1.1rem;
    color: var(--text-gray);
    line-height: 1.8;
    margin-bottom: 2rem;
    font-style: italic;
}

.testimonial-content p::before,
.testimonial-content p::after {
    content: '"';
    font-size: 2rem;
    color: var(--neon-purple);
    font-family: 'Orbitron', monospace;
}

.author-name {
    display: block;
    font-weight: 600;
    color: var(--neon-cyan);
    margin-bottom: 0.5rem;
}

.author-location {
    color: var(--text-gray);
    font-size: 0.9rem;
}

/* CTA Section */
.cta-section {
    background: var(--gradient-galaxy);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-content {
    position: relative;
    z-index: 2;
}

.cta-title {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    background: var(--gradient-nebula);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.cta-subtitle {
    font-size: 1.3rem;
    color: var(--text-gray);
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Footer */
.footer {
    background: var(--primary-bg);
    border-top: 1px solid rgba(0, 240, 255, 0.2);
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-logo-img {
    height: 60px;
    width: auto;
    max-width: 250px;
    object-fit: contain;
    filter: drop-shadow(0 0 15px rgba(0, 240, 255, 0.6)) brightness(1.1) contrast(1.1) saturate(1.1);
    image-rendering: -webkit-optimize-contrast;
    image-rendering: -moz-crisp-edges;
    image-rendering: crisp-edges;
    image-rendering: pixelated;
    -ms-interpolation-mode: nearest-neighbor;
    transition: all 0.3s ease;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
}

.footer-logo-img:hover {
    filter: drop-shadow(0 0 20px rgba(0, 240, 255, 0.8)) brightness(1.2) contrast(1.15) saturate(1.15);
    transform: scale(1.05);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.footer-column h4 {
    color: var(--neon-cyan);
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

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

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

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

.footer-column ul li a:hover {
    color: var(--neon-cyan);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(0, 240, 255, 0.1);
    color: var(--text-gray);
}

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

@keyframes glow {
    0% { text-shadow: 0 0 40px rgba(102, 126, 234, 0.8); }
    100% { text-shadow: 0 0 60px rgba(102, 126, 234, 1), 0 0 80px rgba(118, 75, 162, 0.8); }
}

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

.animate-in {
    animation: fadeInUp 0.8s ease forwards;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: rgba(10, 10, 10, 0.98);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: var(--shadow-neon);
        padding: 2rem 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-menu li {
        margin: 1rem 0;
    }

    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active span:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .hamburger.active span:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .cta-title {
        font-size: 2.5rem;
    }

    .main-logo {
        height: 80px;
    }

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

    .ai-features {
        grid-template-columns: 1fr;
    }

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

    .testimonial-slider {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-links {
        grid-template-columns: 1fr;
    }

    .container {
        padding: 0 1rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .btn {
        padding: 0.8rem 2rem;
        font-size: 1rem;
    }

    .btn-large {
        padding: 1.2rem 2.5rem;
        font-size: 1.1rem;
    }
}