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

:root {
    --primary: #00d4ff;
    --secondary: #0a0e27;
    --accent: #ff0080;
    --dark: #050714;
    --light: #ffffff;
    --gray: #8892b0;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.6;
    color: var(--gray);
    background: var(--secondary);
}

header {
    background: rgba(10, 14, 39, 0.95);
    backdrop-filter: blur(10px);
    padding: 1.5rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(0, 212, 255, 0.1);
}

nav {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 3rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo-upload {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.logo-upload:hover {
    border-color: var(--accent);
    transform: scale(1.05);
}

.logo-upload input {
    display: none;
}

.logo-upload img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.logo-placeholder {
    color: var(--primary);
    font-size: 1.5rem;
}

.logo-text {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--light);
    letter-spacing: -0.5px;
}

.nav-links {
    display: flex;
    gap: 3rem;
    list-style: none;
    align-items: center;
}

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

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

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

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

.lang-switch {
    background: transparent;
    border: 2px solid var(--primary);
    color: var(--primary);
    padding: 0.6rem 1.2rem;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s;
    font-weight: 600;
}

.lang-switch:hover {
    background: var(--primary);
    color: var(--dark);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.5);
}

.hero {
    background: var(--dark);
    position: relative;
    padding: 12rem 3rem 6rem;
    margin-top: 80px;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(0, 212, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 0, 128, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    max-width: 1400px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-size: 4.5rem;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--light) 0%, var(--primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
    font-weight: 800;
}

.hero p {
    font-size: 1.5rem;
    margin-bottom: 3rem;
    color: var(--gray);
    max-width: 700px;
}

.cta-button {
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    color: var(--dark);
    padding: 1.2rem 3rem;
    border: none;
    border-radius: 50px;
    font-size: 1.1rem;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
    display: inline-block;
    font-weight: 700;
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.3);
}

.cta-button:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 212, 255, 0.5);
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 6rem 3rem;
}

.section-title {
    text-align: center;
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--light);
    font-weight: 800;
}

.section-subtitle {
    text-align: center;
    color: var(--gray);
    font-size: 1.2rem;
    margin-bottom: 4rem;
}

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

.service-card {
    background: rgba(255, 255, 255, 0.03);
    padding: 2.5rem;
    border-radius: 20px;
    border: 1px solid rgba(0, 212, 255, 0.1);
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    transform: scaleX(0);
    transition: transform 0.3s;
}

.service-card:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--primary);
    transform: translateY(-10px);
}

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

.service-icon {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    filter: grayscale(1);
    transition: filter 0.3s;
}

.service-card:hover .service-icon {
    filter: grayscale(0);
}

.service-card h3 {
    color: var(--light);
    margin-bottom: 1rem;
    font-size: 1.5rem;
    font-weight: 700;
}

.service-card p {
    color: var(--gray);
    line-height: 1.8;
}

.about {
    background: var(--secondary);
}

.about-logo {
    max-width: 400px;
    margin: 0 auto 4rem;
    display: flex;
    justify-content: center;
    align-items: center;
}

.about-logo img {
    max-width: 100%;
    height: auto;
    max-height: 300px;
    object-fit: contain;
    filter: drop-shadow(0 0 30px rgba(0, 212, 255, 0.3));
}

.about-logo-placeholder {
    text-align: center;
    padding: 3rem;
    border: 2px dashed rgba(0, 212, 255, 0.3);
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.02);
}

.about-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
    font-size: 1.2rem;
    line-height: 2;
    color: var(--gray);
}

.contact {
    background: var(--dark);
    position: relative;
}

.contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 50% 50%, rgba(0, 212, 255, 0.05) 0%, transparent 70%);
    pointer-events: none;
}

.contact-form {
    max-width: 700px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.form-group {
    margin-bottom: 2rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.8rem;
    font-weight: 600;
    color: var(--light);
    font-size: 1.1rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1.2rem;
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid rgba(0, 212, 255, 0.2);
    border-radius: 12px;
    font-size: 1rem;
    transition: all 0.3s;
    color: var(--light);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    background: rgba(255, 255, 255, 0.08);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.2);
}

.form-group textarea {
    min-height: 180px;
    resize: vertical;
}

.submit-button {
    width: 100%;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    color: var(--dark);
    padding: 1.3rem;
    border: none;
    border-radius: 12px;
    font-size: 1.2rem;
    cursor: pointer;
    transition: all 0.3s;
    font-weight: 700;
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.3);
}

.submit-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(0, 212, 255, 0.5);
}

footer {
    background: var(--dark);
    border-top: 1px solid rgba(0, 212, 255, 0.1);
    color: var(--gray);
    text-align: center;
    padding: 3rem;
}

@media (max-width: 768px) {
    nav {
        padding: 0 1.5rem;
    }

    .nav-links {
        gap: 1.5rem;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .hero p {
        font-size: 1.2rem;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }

    .container {
        padding: 4rem 1.5rem;
    }
}