:root {
    --color-bg: #0E111A;
    --color-text: #F0F2F5;
    --color-text-muted: #A0AEC0;
    --color-primary: #3A8DFF;
    --color-secondary: #5B37B2;
    --color-accent: #D74AFF;
    --gradient-main: linear-gradient(135deg, var(--color-secondary), var(--color-primary), var(--color-accent));
    --font-heading: 'Poppins', sans-serif;
    --font-body: 'Inter', sans-serif;
    --container-width: 1200px;
    --header-height: 80px;
    --border-radius: 12px;
    --transition: all 0.3s ease;
}

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

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

/* Canvas Background */
#network-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    opacity: 0.4;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* Typography */
h1,
h2,
h3 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
}

h1 {
    font-size: 3.5rem;
}

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

h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

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

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

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 32px;
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background: var(--gradient-main);
    color: white;
    box-shadow: 0 4px 15px rgba(58, 141, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(58, 141, 255, 0.5);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--color-primary);
    color: var(--color-primary);
}

.btn-outline:hover {
    background: rgba(58, 141, 255, 0.1);
    color: white;
    border-color: var(--color-accent);
}

.btn-block {
    display: block;
    width: 100%;
}

/* Header */
.header {
    height: var(--header-height);
    display: flex;
    align-items: center;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    background: rgba(14, 17, 26, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

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

.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon {
    width: 12px;
    height: 12px;
    background: var(--gradient-main);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--color-primary);
}

.logo-image {
    height: 50px;
    width: auto;
    object-fit: contain;
}

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

.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
}

.nav-link:hover {
    color: var(--color-primary);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
}

/* Hero Section */
.hero {
    padding-top: calc(var(--header-height) + 80px);
    padding-bottom: 100px;
    min-height: 100vh;
    display: flex;
    align-items: center;
    text-align: center;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    margin-bottom: 20px;
    background: linear-gradient(to right, #fff, #a0aec0);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 40px;
}

.hero-cta {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

/* Sections */
.section {
    padding: 100px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 60px;
}

.grid {
    display: grid;
    gap: 30px;
}

/* Services */
.services-grid {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.05);
    padding: 30px;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-5px);
    border-color: var(--color-primary);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.card-icon {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

/* Advantages */
.advantages-grid {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    text-align: center;
}

.advantage-icon {
    font-size: 3rem;
    margin-bottom: 20px;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Portfolio */
.portfolio-grid {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.portfolio-card {
    height: 300px;
    display: flex;
    align-items: flex-end;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent), url('data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iMTAwJSIgaGVpZ2h0PSIxMDAlIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjxyZWN0IHdpZHRoPSIxMDAlIiBoZWlnaHQ9IjEwMCUiIGZpbGw9IiMxYTIwMmMiLz48L3N2Zz4=');
    /* Placeholder bg */
    background-size: cover;
    position: relative;
    overflow: hidden;
}

.portfolio-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-main);
    opacity: 0;
    transition: var(--transition);
    z-index: 1;
}

.portfolio-card:hover::before {
    opacity: 0.8;
}

.portfolio-content {
    position: relative;
    z-index: 2;
    width: 100%;
}

.portfolio-content h3 {
    color: white;
}

.btn-text {
    color: var(--color-primary);
    font-weight: 600;
    margin-top: 10px;
    display: inline-block;
}

.portfolio-card:hover .btn-text {
    color: white;
}

/* CTA Section */
.cta-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
    background: rgba(255, 255, 255, 0.02);
    padding: 60px;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    color: white;
    font-family: var(--font-body);
}

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

/* Footer */
.footer {
    padding: 50px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    text-align: center;
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.footer-logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: white;
}

/* Responsive */
@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }

    .nav {
        display: none;
        /* Simple hide for now, would need JS for toggle */
    }

    .mobile-menu-btn {
        display: block;
    }

    .cta-container {
        grid-template-columns: 1fr;
        padding: 30px;
    }

    .hero-cta {
        flex-direction: column;
    }
}