:root {
    --color-primary: #6366f1;
    --color-primary-hover: #4f46e5;
    --color-text: #ffffff;
    --color-text-secondary: #94a3b8;
    --color-background: #0f172a;
    --color-card: rgba(255, 255, 255, 0.05);
    --color-card-hover: rgba(255, 255, 255, 0.1);
    --color-border: rgba(255, 255, 255, 0.1);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
    background: linear-gradient(135deg, var(--color-background), #1e1b4b);
    color: var(--color-text);
    line-height: 1.5;
    min-height: 100vh;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Navbar */
nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 4rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    font-size: 1.25rem;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.nav-links a {
    color: var(--color-text);
    text-decoration: none;
    transition: color 0.2s;
}

.nav-links a:hover {
    color: var(--color-primary);
}

.github-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Hero Section */
.hero {
    position: relative;
    padding: 8rem 0 5rem;
    text-align: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: -10rem;
    left: 0;
    right: 0;
    height: 24rem;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.3), rgba(168, 85, 247, 0.3));
    transform: skewY(-12deg);
    filter: blur(100px);
    z-index: -1;
}

.hero h1 {
    font-size: clamp(2rem, 5vw, 3.75rem);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.gradient-text {
    background: linear-gradient(to right, #818cf8, #c084fc);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.hero-text {
    max-width: 42rem;
    margin: 0 auto 2.5rem;
    font-size: 1.25rem;
    color: var(--color-text-secondary);
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
    font-size: 1rem;
    color: var(--color-text);
}

.btn-primary {
    background: var(--color-primary);
    box-shadow: 0 8px 16px rgba(99, 102, 241, 0.2);
}

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

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(8px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* Features Section */
.features {
    padding: 6rem 0;
    background: rgba(0, 0, 0, 0.2);
}

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

.feature-card {
    padding: 1.5rem;
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: 1rem;
    backdrop-filter: blur(8px);
    transition: transform 0.2s, background-color 0.2s;
}

.feature-card:hover {
    transform: translateY(-4px);
    background: var(--color-card-hover);
}

.feature-card h3 {
    margin: 1rem 0;
    font-size: 1.25rem;
}

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

.icon-primary {
    color: var(--color-primary);
}

/* Footer */
footer {
    padding: 2rem 0;
    text-align: center;
    border-top: 1px solid var(--color-border);
    color: var(--color-text-secondary);
}

/* Responsive Design */
@media (max-width: 640px) {
    .nav-links a:not(.github-link) {
        display: none;
    }
    
    .hero {
        padding-top: 6rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
}