:root {
    --bg-color: #050510;
    --card-bg: rgba(20, 20, 40, 0.8);
    --text-primary: #ffffff;
    --text-secondary: #a0a0c0;
    --accent-blue: #00f3ff;
    --accent-purple: #bc13fe;
    --accent-green: #0aff00;
    --glass-border: 1px solid rgba(255, 255, 255, 0.15);
    --font-heading: 'Inter', sans-serif;
    --font-body: 'Roboto', sans-serif;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
}

h1,
h2,
h3,
h4 {
    font-family: var(--font-heading);
    font-weight: 700;
    letter-spacing: -0.5px;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s ease;
}

/* Utilities */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 4px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all 0.3s ease;
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-purple));
    color: #000;
    border: none;
    box-shadow: 0 0 20px rgba(0, 243, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 30px rgba(188, 19, 254, 0.5);
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    background: linear-gradient(90deg, #fff, var(--text-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-align: center;
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 4rem;
    font-size: 1.1rem;
}

/* Header */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 20px 0;
    transition: background 0.3s ease;
}

header.scrolled {
    background: rgba(5, 5, 16, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: var(--glass-border);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--accent-blue);
    text-shadow: 0 0 10px rgba(0, 243, 255, 0.5);
}

.nav-links {
    display: flex;
    gap: 30px;
    list-style: none;
}

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

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    background: url('assets/images/hero.png') no-repeat center center/cover;
}

.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, rgba(5, 5, 16, 0.3), var(--bg-color));
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.hero h1 {
    font-size: 4.5rem;
    line-height: 1.1;
    margin-bottom: 20px;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 30px;
    max-width: 600px;
}

/* Services / Features */
.features {
    padding: 100px 0;
    position: relative;
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.card {
    background: var(--card-bg);
    border: var(--glass-border);
    padding: 40px;
    border-radius: 12px;
    transition: transform 0.3s ease, border-color 0.3s ease;
    backdrop-filter: blur(5px);
}

.card:hover {
    transform: translateY(-10px);
    border-color: var(--accent-blue);
}

.card-icon {
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: var(--accent-blue);
}

.card h3 {
    margin-bottom: 15px;
    font-size: 1.5rem;
}

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

/* Tech Deep Dive */
.tech-section {
    padding: 100px 0;
    display: flex;
    align-items: center;
    gap: 50px;
}

.tech-image {
    flex: 1;
    position: relative;
}

.tech-image img {
    width: 100%;
    border-radius: 12px;
    box-shadow: 0 0 30px rgba(0, 243, 255, 0.1);
    border: var(--glass-border);
}

.tech-content {
    flex: 1;
}

.tech-content h2 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.stat-row {
    display: flex;
    gap: 40px;
    margin-top: 30px;
}

.stat h4 {
    font-size: 2.5rem;
    color: var(--accent-purple);
}

.stat p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Contact / Footer */
footer {
    padding: 80px 0 30px;
    border-top: var(--glass-border);
    background: linear-gradient(to top, rgba(20, 20, 40, 0.5), transparent);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 50px;
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: #fff;
}

.contact-info p {
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.copyright {
    text-align: center;
    color: var(--text-secondary);
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 3rem;
    }

    .tech-section {
        flex-direction: column;
    }

    .footer-content {
        flex-direction: column;
        gap: 40px;
    }
}