:root {
    --primary-hue: 220;
    --primary: hsl(var(--primary-hue), 90%, 60%);
    --primary-dark: hsl(var(--primary-hue), 80%, 50%);
    --accent: hsl(30, 90%, 60%);
    --bg-dark: hsl(220, 20%, 10%);
    --bg-darker: hsl(220, 20%, 8%);
    --text-main: hsl(0, 0%, 95%);
    --text-muted: hsl(220, 10%, 70%);
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --transition-fast: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: system-ui, -apple-system, sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, .logo {
    font-family: system-ui, -apple-system, sans-serif;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-fast);
}

ul {
    list-style: none;
}

/* Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Typography */
.gradient-text {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.highlight {
    color: var(--primary);
}

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

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.05em;
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
}

.nav-links a:not(.btn-primary)::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -4px;
    left: 0;
    background-color: var(--primary);
    transition: var(--transition-fast);
}

.nav-links a:hover::after {
    width: 100%;
}

/* Buttons */
.btn-primary, .btn-secondary {
    padding: 0.6rem 1.5rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    border: none;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-primary {
    background: var(--primary);
    color: white;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.2);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4);
    background: var(--primary-dark);
}

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

.btn-secondary:hover {
    background: var(--glass-bg);
    border-color: var(--primary);
}

.large {
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
}

.full-width {
    width: 100%;
}

/* Hero Section */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding-top: 80px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 120vw;
    height: 120vw;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.15) 0%, rgba(15, 23, 42, 0) 70%);
    z-index: -1;
    pointer-events: none;
}

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

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

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

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    opacity: 0.7;
}

.mouse {
    width: 26px;
    height: 42px;
    border: 2px solid var(--text-muted);
    border-radius: 20px;
    position: relative;
}

.wheel {
    width: 4px;
    height: 8px;
    background: var(--text-muted);
    border-radius: 2px;
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0% { top: 6px; opacity: 1; }
    100% { top: 20px; opacity: 0; }
}

/* Services */
.services-section {
    padding: 8rem 0;
    background: var(--bg-darker);
}

.section-header {
    text-align: center;
    margin-bottom: 5rem;
}

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

.section-header p {
    color: var(--text-muted);
    font-size: 1.2rem;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.glass-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 2.5rem;
    transition: var(--transition-fast);
}

.glass-card:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-5px);
    border-color: rgba(255, 255, 255, 0.2);
}

.icon-box {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

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

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

/* About Section */
.about-section {
    padding: 8rem 0;
    background: var(--bg-dark);
}

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

.about-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.feature-list li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    font-weight: 500;
}

.feature-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary);
}

.visual-card .abstract-shape {
    width: 100%;
    height: 400px;
    background: linear-gradient(45deg, var(--primary), var(--accent));
    border-radius: 20px;
    opacity: 0.2;
    position: relative;
    overflow: hidden;
}

.abstract-shape::after {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.1'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

/* Contact */
.contact-section {
    padding: 8rem 0;
    position: relative;
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 0;
    overflow: hidden;
}

.contact-info {
    padding: 3rem;
    background: rgba(59, 130, 246, 0.1);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.contact-form {
    padding: 3rem;
}

.info-item {
    display: flex;
    gap: 1rem;
    align-items: center;
    margin-top: 1.5rem;
    font-size: 1.1rem;
}

.form-group {
    position: relative;
    margin-bottom: 1.5rem;
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 0.8rem 0;
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--text-muted);
    color: white;
    font-size: 1rem;
    outline: none;
    font-family: inherit;
    transition: border-color 0.3s;
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.form-group label {
    position: absolute;
    left: 0;
    top: 0.8rem;
    color: var(--text-muted);
    pointer-events: none;
    transition: 0.3s ease all;
}

.form-group input:focus, .form-group input:not(:placeholder-shown) {
    border-color: var(--primary);
}

.form-group input:focus ~ label,
.form-group input:not(:placeholder-shown) ~ label,
.form-group textarea:focus ~ label,
.form-group textarea:not(:placeholder-shown) ~ label {
    top: -1.2rem;
    font-size: 0.85rem;
    color: var(--primary);
}

/* Footer */
footer {
    padding: 4rem 0;
    border-top: 1px solid var(--glass-border);
    text-align: center;
    color: var(--text-muted);
}

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

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    justify-content: center;
}

.social-links a:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

/* Animations */
.fade-in-up {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s forwards;
}

.delay-100 { animation-delay: 0.1s; }
.delay-200 { animation-delay: 0.2s; }

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

/* Responsive */
@media (max-width: 768px) {
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .nav-links {
        display: none; /* Add JS toggle later */
    }
    
    .about-grid, .contact-wrapper {
        grid-template-columns: 1fr;
    }
    
    .mobile-toggle {
        display: block;
        width: 30px;
        height: 20px;
        position: relative;
        cursor: pointer;
    }
    
    .mobile-toggle span {
        display: block;
        width: 100%;
        height: 2px;
        background: white;
        position: absolute;
        transition: 0.3s;
    }
    
    .mobile-toggle span:nth-child(1) { top: 0; }
    .mobile-toggle span:nth-child(2) { top: 50%; transform: translateY(-50%); }
    .mobile-toggle span:nth-child(3) { bottom: 0; }
}