:root {
    --bg-color: #0A0A0A;
    --text-primary: #FFFFFF;
    --text-secondary: #A1A1AA;
    --accent-color: #10B981;
    --accent-hover: #059669;
    --card-bg: rgba(255, 255, 255, 0.03);
    --card-border: rgba(255, 255, 255, 0.1);
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-family);
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

/* Typography */
h1 {
    font-size: 4.5rem;
    font-weight: 800;
    letter-spacing: -0.05em;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, #FFF 0%, #71717A 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 2rem;
}

/* Layout */
#app {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Header */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2rem 4rem;
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--card-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.03em;
}

.logo .highlight {
    color: var(--accent-color);
}

nav a {
    color: var(--text-secondary);
    text-decoration: none;
    margin: 0 1.5rem;
    font-weight: 600;
    transition: color 0.2s ease;
}

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

/* Hero Section */
.hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    padding: 8rem 4rem;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
}

/* Buttons */
.cta-button {
    background-color: var(--accent-color);
    color: #000;
    border: none;
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: transform 0.2s ease, background-color 0.2s ease, box-shadow 0.2s ease;
}

.cta-button:hover {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(16, 185, 129, 0.2);
}

.cta-button:active {
    transform: translateY(0);
}

/* Neural Network Animation */
.neural-net {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 24px;
    padding: 3rem;
    position: relative;
    overflow: hidden;
}

.layer {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    z-index: 2;
}

.node {
    width: 20px;
    height: 20px;
    background: var(--text-secondary);
    border-radius: 50%;
    box-shadow: 0 0 0 rgba(255, 255, 255, 0);
}

.highlight-node {
    background: var(--accent-color);
    box-shadow: 0 0 15px var(--accent-color);
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    padding: 4rem;
    max-width: 1400px;
    margin: 0 auto;
}

.feature-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 2.5rem;
    transition: transform 0.3s ease, border-color 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: rgba(255, 255, 255, 0.2);
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

/* Footer */
footer {
    padding: 2rem;
    text-align: center;
    border-top: 1px solid var(--card-border);
    margin-top: auto;
}

/* Animations */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s ease forwards;
}

.scale-in {
    opacity: 0;
    transform: scale(0.95);
    animation: scaleIn 0.6s ease forwards;
}

.delay-1 { animation-delay: 0.2s; }
.delay-2 { animation-delay: 0.4s; }

.delay-node-1 { animation-delay: 0.3s; }
.delay-node-2 { animation-delay: 0.6s; }

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

@keyframes scaleIn {
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.pulse {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.2); opacity: 0.8; }
    100% { transform: scale(1); opacity: 1; }
}