:root {
    --bg-color: #050a14;
    --bg-secondary: #0f172a;
    --card-bg: rgba(30, 41, 59, 0.7);
    --text-color: #e2e8f0;
    --text-muted: #94a3b8;
    --heading-color: #f1f5f9;
    --accent-color: #0ea5e9;
    --accent-glow: rgba(14, 165, 233, 0.5);
    --border-color: rgba(148, 163, 184, 0.1);
    --nav-height: 80px;
    --gradient-primary: linear-gradient(135deg, #0ea5e9 0%, #2563eb 100%);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Exo 2', 'Roboto', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    color: var(--heading-color);
    font-weight: 700;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

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

ul {
    list-style: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Utilities */
.btn {
    display: inline-block;
    padding: 12px 32px;
    background: var(--gradient-primary);
    color: white;
    border-radius: 4px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    position: relative;
    overflow: hidden;
    z-index: 1;
    border: none;
    cursor: pointer;
    box-shadow: 0 0 20px var(--accent-glow);
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 0;
    height: 100%;
    background: rgba(255, 255, 255, 0.1);
    transition: width 0.3s ease;
    z-index: -1;
}

.btn:hover::before {
    width: 100%;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 30px var(--accent-glow);
}

.section-title {
    text-align: center;
    margin-bottom: 4rem;
    position: relative;
}

.section-title h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    display: inline-block;
    background: linear-gradient(to right, #fff, #94a3b8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.section-title p {
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto;
}

/* Header */
header {
    background: rgba(5, 10, 20, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    height: var(--nav-height);
    display: flex;
    align-items: center;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo {
    font-size: 1.8rem;
    font-weight: 800;
    color: white;
    letter-spacing: 2px;
    text-shadow: 0 0 10px var(--accent-glow);
}

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

nav ul {
    display: flex;
    gap: 2.5rem;
}

nav a {
    font-size: 0.9rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    position: relative;
}

nav a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-color);
    transition: width 0.3s ease;
}

nav a:hover, nav a.active {
    color: white;
}

nav a:hover::after, nav a.active::after {
    width: 100%;
}

/* Hero Section */
.hero {
    margin-top: var(--nav-height);
    height: 90vh;
    position: relative;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('../images/hero_bg.jpg') no-repeat center center/cover;
    z-index: -1;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, rgba(5, 10, 20, 0.95) 0%, rgba(5, 10, 20, 0.6) 100%);
    z-index: -1;
}

.hero-content {
    max-width: 800px;
    padding-top: 2rem;
    animation: fadeInUp 1s ease-out;
}

.hero h1 {
    font-size: 4rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    background: linear-gradient(to right, #fff, #38bdf8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: 2.5rem;
    max-width: 600px;
}

/* Services Grid */
.section {
    padding: 6rem 0;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 2.5rem;
    border-radius: 8px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(5px);
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.card:hover::before {
    transform: scaleX(1);
}

.card-icon {
    font-size: 2.5rem;
    color: var(--accent-color);
    margin-bottom: 1.5rem;
}

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

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

/* Feature Section */
.feature-section {
    display: flex;
    align-items: center;
    gap: 4rem;
    padding: 6rem 0;
    background: var(--bg-secondary);
    position: relative;
}

.feature-img {
    flex: 1;
    position: relative;
}

.feature-img img {
    width: 100%;
    border-radius: 8px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
    border: 1px solid var(--border-color);
}

.feature-content {
    flex: 1;
}

.feature-list {
    margin-top: 2rem;
}

.feature-list li {
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    color: var(--text-muted);
}

.feature-list i {
    color: var(--accent-color);
}

/* Footer */
footer {
    background: #020617;
    padding: 4rem 0 2rem;
    border-top: 1px solid var(--border-color);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-col h4 {
    color: white;
    margin-bottom: 1.5rem;
}

.footer-col ul li {
    margin-bottom: 0.8rem;
}

.footer-col a {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.footer-col a:hover {
    color: var(--accent-color);
}

.copyright {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .feature-section {
        flex-direction: column;
    }
    
    .nav-container {
        flex-direction: column;
        gap: 1rem;
    }
    
    nav ul {
        gap: 1.5rem;
        flex-wrap: wrap;
        justify-content: center;
    }
}

/* Pricing */
.pricing-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 3rem;
    border-radius: 12px;
    text-align: center;
    position: relative;
    transition: transform 0.3s;
}

.pricing-card.featured {
    border-color: var(--accent-color);
    box-shadow: 0 0 30px rgba(14, 165, 233, 0.1);
}

.price {
    font-size: 3rem;
    font-weight: 700;
    color: white;
    margin: 1.5rem 0;
}

.price span {
    font-size: 1rem;
    color: var(--text-muted);
}

.pricing-features {
    margin: 2rem 0;
    text-align: left;
}

.pricing-features li {
    margin-bottom: 1rem;
    color: var(--text-muted);
}

.pricing-features i {
    color: var(--accent-color);
    margin-right: 10px;
}