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

:root {
    --primary-color: #4f46e5;
    --secondary-color: #06b6d4;
    --accent-color: #8b5cf6;
    --dark-bg: #0f172a;
    --darker-bg: #020617;
    --light-bg: #f8fafc;
    --lighter-bg: #ffffff;
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-dark: #1e293b;
    --text-dark-secondary: #64748b;
}

body.light-theme {
    --dark-bg: #f8fafc;
    --darker-bg: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--darker-bg);
    color: var(--text-primary);
    min-height: 100vh;
    transition: background 0.3s ease, color 0.3s ease;
    position: relative;
    overflow-x: hidden;
}

/* Animated Background Particles */
.particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: none;
}

.particle {
    position: fixed;
    width: 4px;
    height: 4px;
    background: var(--secondary-color);
    border-radius: 50%;
    opacity: 0;
    animation: float 15s infinite;
    box-shadow: 0 0 10px var(--secondary-color);
}

@keyframes float {
    0% {
        opacity: 0;
        transform: translateY(-20vh) translateX(0) rotate(0deg);
    }
    10%, 90% {
        opacity: 0.8;
    }
    100% {
        opacity: 0;
        transform: translateY(100vh) translateX(50px) rotate(360deg);
    }
}

.particle:nth-child(1) { left: 10%; animation-delay: 0s; width: 3px; height: 3px; }
.particle:nth-child(2) { left: 20%; animation-delay: 2s; width: 5px; height: 5px; }
.particle:nth-child(3) { left: 30%; animation-delay: 4s; width: 4px; height: 4px; }
.particle:nth-child(4) { left: 40%; animation-delay: 1s; width: 6px; height: 6px; }
.particle:nth-child(5) { left: 50%; animation-delay: 3s; width: 3px; height: 3px; }
.particle:nth-child(6) { left: 60%; animation-delay: 5s; width: 5px; height: 5px; }
.particle:nth-child(7) { left: 70%; animation-delay: 2.5s; width: 4px; height: 4px; }
.particle:nth-child(8) { left: 80%; animation-delay: 4.5s; width: 6px; height: 6px; }
.particle:nth-child(9) { left: 90%; animation-delay: 1.5s; width: 3px; height: 3px; }
.particle:nth-child(10) { left: 15%; animation-delay: 3.5s; width: 5px; height: 5px; }
.particle:nth-child(11) { left: 25%; animation-delay: 1.2s; width: 4px; height: 4px; }
.particle:nth-child(12) { left: 35%; animation-delay: 4.8s; width: 3px; height: 3px; }
.particle:nth-child(13) { left: 45%; animation-delay: 2.2s; width: 6px; height: 6px; }
.particle:nth-child(14) { left: 55%; animation-delay: 3.8s; width: 5px; height: 5px; }
.particle:nth-child(15) { left: 65%; animation-delay: 0.5s; width: 4px; height: 4px; }

/* Background Grid */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(79, 70, 229, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(79, 70, 229, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: gridMove 20s linear infinite;
    z-index: 0;
    pointer-events: none;
}

body.light-theme::before {
    background-image: 
        linear-gradient(rgba(79, 70, 229, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(79, 70, 229, 0.05) 1px, transparent 1px);
}

@keyframes gridMove {
    0% {
        transform: translate(0, 0);
    }
    100% {
        transform: translate(50px, 50px);
    }
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding: 1rem 2rem;
    transition: all 0.3s ease;
    animation: slideDown 0.5s ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

body.light-theme .navbar {
    background: rgba(255, 255, 255, 0.8);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.navbar-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-decoration: none;
}

.navbar-menu {
    display: flex;
    gap: 2rem;
    align-items: center;
    list-style: none;
    flex: 1;
    justify-content: center;
    margin: 0;
}

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

.navbar-menu a:hover,
.navbar-menu a.active {
    color: var(--primary-color);
}

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

.navbar-menu a:hover::after,
.navbar-menu a.active::after {
    width: 100%;
}

.navbar-right {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    margin-left: auto;
}

.language-switcher {
    display: flex;
    gap: 0.5rem;
}

.mobile-lang-dropdown {
    display: none;
}

.theme-toggle,
.lang-btn {
    padding: 0.5rem 1rem;
    background: rgba(79, 70, 229, 0.1);
    border: 1px solid rgba(79, 70, 229, 0.2);
    border-radius: 50px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.9rem;
    font-weight: 500;
}

.theme-toggle:hover,
.lang-btn:hover {
    background: rgba(79, 70, 229, 0.2);
    transform: translateY(-2px);
}

.lang-btn.active {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border-color: transparent;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
}

/* Main Content */
main {
    padding-top: 80px;
    min-height: 100vh;
    position: relative;
    z-index: 10;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
}

/* Hero Section */
.hero {
    text-align: center;
    padding: 6rem 2rem 4rem;
    animation: fadeInUp 0.8s ease-out;
}

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

.hero-logo {
    max-width: 250px;
    height: auto;
    margin: 0 auto 2rem;
    filter: drop-shadow(0 0 30px rgba(79, 70, 229, 0.3));
}

.hero-title {
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 3px;
    margin-bottom: 2rem;
}

.hero-description {
    font-size: 1.3rem;
    color: var(--text-secondary);
    max-width: 800px;
    margin: 0 auto 3rem;
    line-height: 1.8;
}

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

.btn {
    padding: 1rem 2.5rem;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    box-shadow: 0 4px 15px rgba(79, 70, 229, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(79, 70, 229, 0.5);
}

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

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

/* Stats Section */
.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    padding: 4rem 2rem;
}

.stat-card {
    text-align: center;
    padding: 2rem;
    background: rgba(79, 70, 229, 0.05);
    border: 1px solid rgba(79, 70, 229, 0.1);
    border-radius: 20px;
    transition: all 0.3s ease;
    animation: fadeInUp 0.8s ease-out backwards;
}

.stat-card:nth-child(1) { animation-delay: 0.2s; }
.stat-card:nth-child(2) { animation-delay: 0.3s; }
.stat-card:nth-child(3) { animation-delay: 0.4s; }
.stat-card:nth-child(4) { animation-delay: 0.5s; }

body.light-theme .stat-card {
    background: rgba(79, 70, 229, 0.03);
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(79, 70, 229, 0.2);
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

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

/* Section Styles */
.section {
    padding: 5rem 2rem;
}

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

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

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

/* Grid Layouts */
.grid {
    display: grid;
    gap: 2rem;
}

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-4 {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* Card Styles */
.card {
    background: rgba(79, 70, 229, 0.05);
    border: 1px solid rgba(79, 70, 229, 0.1);
    border-radius: 20px;
    padding: 2.5rem;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
    animation: fadeInScale 0.6s ease-out backwards;
}

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.card:nth-child(1) { animation-delay: 0.1s; }
.card:nth-child(2) { animation-delay: 0.2s; }
.card:nth-child(3) { animation-delay: 0.3s; }
.card:nth-child(4) { animation-delay: 0.4s; }
.card:nth-child(5) { animation-delay: 0.5s; }
.card:nth-child(6) { animation-delay: 0.6s; }

body.light-theme .card {
    background: white;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(79, 70, 229, 0.1), transparent);
    transition: left 0.6s ease;
}

.card:hover::before {
    left: 100%;
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 50px rgba(79, 70, 229, 0.3);
}

.card-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    display: block;
}

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

.card-description {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-secondary);
}

.card-features {
    list-style: none;
    margin-top: 1.5rem;
}

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

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

/* Footer */
footer {
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    padding: 3rem 2rem 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

body.light-theme footer {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-top: 1px solid rgba(0, 0, 0, 0.1);
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 2rem;
}

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

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

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

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

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

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

body.light-theme .footer-bottom {
    border-top: 1px solid rgba(0, 0, 0, 0.1);
}

/* Mobile Language Dropdown */
.mobile-lang-dropdown {
    display: none;
}

/* Responsive */
@media (max-width: 768px) {
    .navbar {
        padding: 0.75rem 1rem;
    }
    
    .navbar-container {
        gap: 0.5rem;
    }
    
    .navbar-right {
        gap: 0.3rem;
    }
    
    .theme-toggle {
        padding: 0.4rem 0.7rem;
        font-size: 0.85rem;
    }
    
    .language-switcher {
        display: none;
    }
    
    .mobile-lang-dropdown {
        display: block;
        position: relative;
    }
    
    .mobile-lang-btn {
        background: rgba(255, 255, 255, 0.05);
        border: 1px solid rgba(255, 255, 255, 0.1);
        padding: 0.4rem 0.8rem;
        border-radius: 0.5rem;
        color: var(--text-color);
        font-size: 0.85rem;
        cursor: pointer;
        display: flex;
        align-items: center;
        gap: 0.3rem;
    }
    
    .mobile-lang-menu {
        position: absolute;
        top: 100%;
        right: 0;
        margin-top: 0.5rem;
        background: var(--darker-bg);
        border: 1px solid rgba(255, 255, 255, 0.1);
        border-radius: 0.5rem;
        padding: 0.5rem;
        min-width: 150px;
        display: none;
        z-index: 1000;
    }
    
    body.light-theme .mobile-lang-menu {
        background: var(--lighter-bg);
        border-color: rgba(0, 0, 0, 0.1);
    }
    
    .mobile-lang-menu.active {
        display: block;
    }
    
    .mobile-lang-menu button {
        width: 100%;
        text-align: left;
        padding: 0.6rem 0.8rem;
        background: transparent;
        border: none;
        color: var(--text-color);
        cursor: pointer;
        border-radius: 0.3rem;
        display: flex;
        align-items: center;
        gap: 0.5rem;
        font-size: 0.9rem;
    }
    
    .mobile-lang-menu button:hover {
        background: rgba(99, 102, 241, 0.2);
    }
    
    .mobile-lang-menu button.active {
        background: rgba(99, 102, 241, 0.3);
        color: var(--primary-color);
    }
    
    .navbar-menu {
        position: fixed;
        top: 58px;
        left: 0;
        right: 0;
        background: var(--darker-bg);
        border-top: 1px solid rgba(255, 255, 255, 0.1);
        flex-direction: column;
        flex: none;
        justify-content: flex-start;
        gap: 0;
        padding: 0;
        margin: 0;
        max-height: 0;
        overflow: hidden;
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    }
    
    body.light-theme .navbar-menu {
        background: var(--lighter-bg);
        border-top: 1px solid rgba(0, 0, 0, 0.1);
    }
    
    .navbar-menu.active {
        max-height: 400px;
        opacity: 1;
        visibility: visible;
        padding: 1rem;
    }
    
    .navbar-menu li {
        width: 100%;
        text-align: center;
        padding: 0.75rem 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .hero {
        padding: 3rem 1rem 2rem;
    }
    
    .hero-title {
        font-size: 2rem;
        margin-bottom: 1rem;
    }
    
    .hero-subtitle {
        font-size: 0.9rem;
        letter-spacing: 2px;
    }
    
    .hero-description {
        font-size: 1rem;
        margin: 0 auto 2rem;
    }
    
    .section {
        padding: 3rem 1rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .section-subtitle {
        font-size: 1rem;
    }
    
    .stats {
        gap: 1rem;
        padding: 2rem 1rem;
    }
    
    .stat-card {
        padding: 1.5rem;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .card {
        padding: 1.5rem;
    }
    
    .container {
        padding: 1rem;
    }
    
    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    footer {
        padding: 2rem 1rem 1.5rem;
    }
    
    .footer-content {
        gap: 2rem;
    }
}