:root {
    --bg-color: #000000;
    --text-color: #ffffff;
    --text-muted: #a0a0a0;
    --border-color: #1f1f1f;
    --card-bg: #0a0a0a;
    --primary: #ffffff;
    --primary-hover: #e0e0e0;
    --glow-color: rgba(255, 255, 255, 0.15);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.5;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3 {
    font-weight: 600;
    letter-spacing: -0.03em;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    padding: 1.5rem 2rem;
    z-index: 100;
    background: linear-gradient(to bottom, rgba(0,0,0,1) 0%, rgba(0,0,0,0) 100%);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid transparent;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    background: rgba(0,0,0,0.8);
    border-bottom: 1px solid var(--border-color);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 700;
    font-size: 1.25rem;
    letter-spacing: -0.05em;
}

.nav-links {
    display: flex;
    gap: 2.5rem;
    list-style: none;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.2s ease;
}

.nav-links a:hover, .nav-links a.active {
    color: var(--text-color);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
}

.btn-outline {
    background: transparent;
    color: var(--text-color);
    border: 1px solid var(--border-color);
}

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

.btn-primary {
    background: var(--primary);
    color: var(--bg-color);
    border: none;
    padding: 0.75rem 1.5rem;
    font-weight: 600;
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px var(--glow-color);
}

/* Hero Section */
.hero {
    padding: 12rem 2rem 6rem;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    top: -20%;
    left: 50%;
    transform: translateX(-50%);
    width: 60vw;
    height: 60vh;
    background: radial-gradient(circle, var(--glow-color) 0%, rgba(0,0,0,0) 70%);
    z-index: -1;
    pointer-events: none;
}

.hero-content {
    max-width: 800px;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    line-height: 1.1;
}

.glow-text {
    text-shadow: 0 0 40px rgba(255,255,255,0.3);
}

.hero p {
    color: var(--text-muted);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto 2.5rem;
}

/* Features Section */
.features {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 1.5rem;
}

.feature-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2.5rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
    transition: border-color 0.3s ease;
    overflow: hidden;
    position: relative;
}

.feature-card:hover {
    border-color: #333;
}

.card-header h2 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.card-header p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* Mockup Window */
.mockup-window {
    background: #000;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.mockup-header {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    gap: 6px;
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #333;
}

.dot:nth-child(1) { background: #ff5f56; }
.dot:nth-child(2) { background: #ffbd2e; }
.dot:nth-child(3) { background: #27c93f; }

.mockup-body {
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    font-family: monospace;
    font-size: 0.85rem;
    color: #0f0;
}

.mockup-body code {
    opacity: 0;
    animation: typeIn 0.5s forwards;
}

.mockup-body code:nth-child(1) { animation-delay: 0.5s; }
.mockup-body code:nth-child(2) { animation-delay: 1s; }
.mockup-body code:nth-child(3) { animation-delay: 1.5s; }

@keyframes typeIn {
    from { opacity: 0; transform: translateY(5px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Icon Display */
.icon-display {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
    height: 100%;
}

.speed-icon-container {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    box-shadow: 0 0 20px rgba(255,255,255,0.05);
}

.speed-icon-container::after {
    content: '';
    position: absolute;
    inset: -1px;
    border-radius: 50%;
    padding: 1px;
    background: linear-gradient(to bottom right, rgba(255,255,255,0.5), transparent);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
}

.stats {
    background: #000;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1rem 2rem;
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.stat-item {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.stat-value {
    font-weight: 600;
    font-size: 1.1rem;
}

.stat-label {
    color: var(--text-muted);
    font-size: 0.8rem;
}

/* Responsive */
@media (max-width: 768px) {
    .features {
        grid-template-columns: 1fr;
    }
    
    .nav-links {
        display: none;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
}