:root {
    --primary: #00d084;
    --primary-dark: #1e40af;
    --secondary: #182096;
    --accent: #06b6d4;
    --bg-dark: #0f172a;
    --bg-darker: #020617;
    --text-light: #f1f5f9;
    --text-muted: #94a3b8;
    --glass-bg: rgba(15, 23, 42, 0.6);
    --glass-border: rgba(148, 163, 184, 0.1);
}

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

body {
    font-family: 'Hind Siliguri', 'Noto Serif Bengali', sans-serif;
    background: var(--bg-darker);
    color: var(--text-light);
    overflow-x: hidden;
    line-height: 1.6;
}

/* 3D Canvas Background */
#bg-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

/* Gradient Overlay */
.gradient-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: linear-gradient(135deg, 
        rgba(37, 99, 235, 0.05) 0%,
        rgba(124, 58, 237, 0.05) 50%,
        rgba(6, 182, 212, 0.05) 100%);
    pointer-events: none;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 1.5rem 0;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    transition: all 0.3s ease;
}

.navbar.scrolled {
    padding: 1rem 0;
    background: rgba(15, 23, 42, 0.9);
}

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

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

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-family: 'Noto Serif Bengali', serif;
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
    list-style: none;
}

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

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    transition: width 0.3s ease;
}

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

/* Mobile Menu */
.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.mobile-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-light);
    border-radius: 2px;
    transition: all 0.3s ease;
}

/* Buttons */
.btn {
    padding: 0.75rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    display: inline-block;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    border: none;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--secondary), var(--accent));
    transition: left 0.3s ease;
    z-index: -1;
}

.btn-primary:hover::before {
    left: 0;
}

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

.btn-outline:hover {
    background: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(37, 99, 235, 0.3);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 8rem 0 4rem;
    position: relative;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-text h1 {
    font-size: 4rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--text-light), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-family: 'Noto Serif Bengali', serif;
}

.hero-text p {
    font-size: 1.3rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
    line-height: 1.8;
}

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

.hero-image {
    position: relative;
    perspective: 1000px;
}

.phone-mockup {
    width: 100%;
    max-width: 400px;
    margin: 0 auto;
    transform-style: preserve-3d;
    transition: transform 0.3s ease;
}

.phone-mockup:hover {
    transform: rotateY(5deg) rotateX(-5deg);
}

.phone-mockup img {
    width: 100%;
    border-radius: 40px;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.5);
}

/* Glass Card */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    padding: 2.5rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.glass-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, 
        transparent, 
        rgba(255, 255, 255, 0.2), 
        transparent);
}

.glass-card:hover {
    transform: translateY(-10px);
    border-color: rgba(37, 99, 235, 0.3);
    box-shadow: 0 20px 40px rgba(37, 99, 235, 0.2);
}

/* Features Section */
.features {
    padding: 6rem 0;
}

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

.section-title h2 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    font-family: 'Noto Serif Bengali', serif;
}

.section-title p {
    font-size: 1.2rem;
    color: var(--text-muted);
}

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

.feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 10px 30px rgba(37, 99, 235, 0.3);
}

.glass-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.glass-card p {
    color: var(--text-muted);
    line-height: 1.8;
}

/* Packages Section */
.packages {
    padding: 6rem 0;
}

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

.package-card {
    position: relative;
}

.package-card.featured {
    transform: scale(1.05);
    border: 2px solid var(--accent);
}

.badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, #fbbf24, #f59e0b);
    color: #000;
    padding: 0.5rem 1.5rem;
    border-radius: 50px;
    font-weight: 700;
    font-size: 0.9rem;
}

.price {
    font-size: 3rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--accent), var(--primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 1rem 0;
}

.features-list {
    list-style: none;
    margin: 2rem 0;
}

.features-list li {
    padding: 0.75rem 0;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.features-list i {
    font-size: 1.2rem;
}

.check {
    color: #10b981;
}

.cross {
    color: #ef4444;
}

/* App Showcase */
.app-showcase {
    padding: 6rem 0;
}

.app-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

/* Footer */
.footer {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border-top: 1px solid var(--glass-border);
    padding: 4rem 0 2rem;
    margin-top: 6rem;
}

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

.footer h4 {
    font-size: 1.3rem;
    margin-bottom: 1.5rem;
    font-family: 'Noto Serif Bengali', serif;
}

.footer ul {
    list-style: none;
}

.footer ul li {
    margin-bottom: 0.75rem;
}

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

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

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

/* Scroll Animation */
.scroll-reveal {
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.8s ease;
}

.scroll-reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 80px;
        left: -100%;
        flex-direction: column;
        background: var(--glass-bg);
        backdrop-filter: blur(20px);
        width: 100%;
        padding: 2rem;
        transition: left 0.3s ease;
    }

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

    .mobile-toggle {
        display: flex;
    }

    .hero-content,
    .app-content {
        grid-template-columns: 1fr;
    }

    .hero-text h1 {
        font-size: 2.5rem;
    }

    .hero-text p {
        font-size: 1.1rem;
    }

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

    .package-card.featured {
        transform: none;
    }
}