:root {
    --bg: #0f172a;
    --bg-dark: #020617;
    --text: #f8fafc;
    --text-muted: #94a3b8;
    --primary: #3b82f6;
    --primary-hover: #2563eb;
    --accent: #818cf8;
    --glass: rgba(30, 41, 59, 0.7);
    --glass-border: rgba(255, 255, 255, 0.1);
    --container: 1200px;
}

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

html {
    scroll-behavior: smooth;
}

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

h1, h2, h3 {
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
}

.container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 2rem;
}

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

/* Typography Helpers */
span {
    color: var(--primary);
}

.badge {
    display: inline-block;
    background: rgba(59, 130, 246, 0.1);
    color: var(--primary);
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    padding: 1.5rem 0;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--glass-border);
}

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

.logo {
    font-family: 'Outfit', sans-serif;
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.5px;
}

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

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

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

/* Hero Section */
.hero {
    padding: 12rem 0 8rem;
    background: radial-gradient(circle at 10% 20%, rgba(59, 130, 246, 0.05) 0%, transparent 50%),
                radial-gradient(circle at 90% 80%, rgba(129, 140, 248, 0.05) 0%, transparent 50%);
}

.hero h1 {
    font-size: 4rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: 2.5rem;
}

.hero-actions {
    display: flex;
    gap: 1.5rem;
    align-items: center;
}

.hero-visual {
    position: relative;
}

.dashboard-preview {
    background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    padding: 1rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    overflow: hidden;
    transform: perspective(1000px) rotateY(-5deg);
    transition: transform 0.5s ease;
}

.dashboard-preview:hover {
    transform: perspective(1000px) rotateY(0deg);
}

.dashboard-preview img {
    width: 100%;
    border-radius: 12px;
    display: block;
}

/* Buttons */
.btn-primary, .btn-lg {
    background: var(--primary);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

.btn-primary:hover, .btn-lg:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(59, 130, 246, 0.3);
}

.btn-text {
    color: var(--text);
    text-decoration: none;
    font-weight: 600;
}

/* Features */
.features {
    padding: 8rem 0;
    background-color: var(--bg-dark);
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 4rem;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.section-header p {
    color: var(--text-muted);
    font-size: 1.125rem;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.feature-card {
    background: var(--glass);
    border: 1px solid var(--glass-border);
    padding: 3rem 2rem;
    border-radius: 20px;
    transition: transform 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-10px);
}

.feature-card .icon {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

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

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

/* Traceability */
.traceability {
    padding: 8rem 0;
}

.glass-card {
    background: var(--glass);
    border: 1px solid var(--glass-border);
    padding: 2rem;
    border-radius: 24px;
    text-align: center;
}

.trace-header {
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 2rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.875rem;
}

.trace-nodes {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    align-items: center;
}

.node {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    padding: 0.75rem 2rem;
    border-radius: 12px;
    font-size: 0.875rem;
}

.node.active {
    background: var(--primary);
    border-color: var(--primary);
}

.arrow {
    color: var(--text-muted);
}

.check-list {
    list-style: none;
    margin-top: 2rem;
}

.check-list li {
    position: relative;
    padding-left: 2rem;
    margin-bottom: 1rem;
    color: var(--text-muted);
}

.check-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: 900;
}

/* Architecture Section */
.architecture {
    padding: 4rem 0 8rem;
}

.glass-box {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1) 0%, rgba(129, 140, 248, 0.1) 100%);
    border: 1px solid var(--glass-border);
    border-radius: 32px;
    padding: 4rem;
}

.stats {
    display: flex;
    gap: 4rem;
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat .val {
    font-size: 3rem;
    font-weight: 800;
    font-family: 'Outfit', sans-serif;
}

.stat .label {
    color: var(--text-muted);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Footer */
footer {
    background-color: var(--bg-dark);
    padding: 6rem 0 2rem;
    border-top: 1px solid var(--glass-border);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8rem;
    margin-bottom: 4rem;
}

.footer-info .logo {
    font-size: 2rem;
    margin-bottom: 1.5rem;
}

.footer-info p {
    color: var(--text-muted);
    max-width: 300px;
}

.contact-form {
    background: var(--glass);
    padding: 2.5rem;
    border-radius: 24px;
    border: 1px solid var(--glass-border);
}

.contact-form h3 {
    margin-bottom: 2rem;
}

.contact-form form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.contact-form input, .contact-form select {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    padding: 0.875rem 1rem;
    border-radius: 8px;
    color: white;
    font-family: inherit;
    font-size: 1rem;
}

.contact-form input:focus {
    outline: none;
    border-color: var(--primary);
}

.copyright {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.875rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

/* Mobile Responsive */
@media (max-width: 968px) {
    .grid, .footer-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .hero {
        padding-top: 10rem;
    }
    
    .hero h1 {
        font-size: 3rem;
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
    }
    
    .nav-links {
        display: none;
    }
}