:root {
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --secondary-color: #f59e0b;
    --accent-color: #10b981;
    --background-color: #0f172a;
    --surface-color: #1e293b;
    --surface-light: #334155;
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --border-color: #475569;
    --gradient: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    --glass-bg: rgba(30, 41, 59, 0.7);
    --glass-border: rgba(148, 163, 184, 0.1);
}

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

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

/* Modern glassmorphism header */
#header {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    backdrop-filter: blur(20px);
    background: var(--glass-bg);
    border-bottom: 1px solid var(--glass-border);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s ease;
}

#header-img {
    height: 40px;
    width: auto;
    filter: brightness(0) invert(1);
}

#nav-bar ul {
    display: flex;
    gap: 2rem;
    list-style: none;
}

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

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

.nav-link:hover {
    color: var(--text-primary);
    transform: translateY(-2px);
}

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

/* Hero section with modern design */
#hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    background:
        radial-gradient(circle at 20% 80%, var(--primary-color)20 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, var(--secondary-color)20 0%, transparent 50%),
        var(--background-color);
}

#hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%236366f1' fill-opacity='0.05'%3E%3Ccircle cx='30' cy='30' r='2'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    animation: float 20s infinite linear;
}

@keyframes float {
    0% {
        transform: translateY(0px);
    }

    100% {
        transform: translateY(-60px);
    }
}

#hero h2 {
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 700;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1.5rem;
    animation: slideInUp 1s ease-out;
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

#form {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
    flex-wrap: wrap;
    justify-content: center;
    animation: slideInUp 1s ease-out 0.2s both;
}

#email {
    padding: 1rem 1.5rem;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    color: var(--text-primary);
    font-size: 1rem;
    min-width: 300px;
    transition: all 0.3s ease;
}

#email:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

#email::placeholder {
    color: var(--text-muted);
}

.btn {
    padding: 1rem 2rem;
    background: var(--gradient);
    border: none;
    border-radius: 12px;
    color: white;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.4);
}

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

/* Features section */
#features {
    padding: 6rem 0;
    background: var(--surface-color);
}

.grid {
    display: flex;
    align-items: center;
    gap: 2rem;
    padding: 2rem 0;
    border-radius: 16px;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    margin-bottom: 2rem;
    transition: all 0.3s ease;
}

.grid:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

.icon {
    font-size: 3rem;
    color: var(--accent-color);
    min-width: 100px;
    text-align: center;
}

.desc {
    flex: 1;
    padding: 0 2rem;
}

.desc h2 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.desc p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* Video section */
#how-it-works {
    padding: 6rem 0;
    text-align: center;
}

#video {
    width: 100%;
    max-width: 800px;
    height: 450px;
    border-radius: 16px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

/* Pricing section */
#pricing {
    padding: 6rem 0;
    background: var(--surface-color);
}

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

.product {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.product::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient);
}

.product:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(99, 102, 241, 0.2);
}

.level {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.product h2 {
    font-size: 3rem;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 2rem;
}

.product ol {
    list-style: none;
    margin-bottom: 2rem;
}

.product li {
    padding: 0.5rem 0;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--glass-border);
}

.product li:last-child {
    border-bottom: none;
}

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

footer ul {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 1rem;
    list-style: none;
}

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

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

footer span {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9rem;
    display: block;
}

/* Responsive design */
@media (max-width: 768px) {
    #header {
        flex-direction: column;
        gap: 1rem;
        padding: 1rem;
    }

    #nav-bar ul {
        gap: 1rem;
    }

    #hero h2 {
        font-size: clamp(2rem, 8vw, 4rem);
    }

    #form {
        flex-direction: column;
        align-items: center;
    }

    #email {
        min-width: 280px;
    }

    .grid {
        flex-direction: column;
        text-align: center;
    }

    .icon {
        min-width: auto;
    }

    .desc {
        padding: 1rem 0;
    }

    #video {
        height: 250px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }

    .product {
        padding: 1.5rem;
    }

    footer ul {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }
}