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

:root {
    --primary-color: #1d1d1f;
    --secondary-color: #f5f5f7;
    --accent-color: #0071e3;
    --text-primary: #1d1d1f;
    --text-secondary: #6e6e73;
    --border-color: #d2d2d7;
    --background: #ffffff;
    --card-background: #f5f5f7;
    --hero-gradient-start: #f5f5f7;
    --hero-gradient-end: #e8e8ed;
    --navbar-background: rgba(255, 255, 255, 0.8);
    --navbar-border: rgba(0, 0, 0, 0.1);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@media (prefers-color-scheme: dark) {
    :root {
        --primary-color: #f5f5f7;
        --secondary-color: #1d1d1f;
        --accent-color: #0a84ff;
        --text-primary: #f5f5f7;
        --text-secondary: #a1a1a6;
        --border-color: #424245;
        --background: #000000;
        --card-background: #1c1c1e;
        --hero-gradient-start: #1c1c1e;
        --hero-gradient-end: #2c2c2e;
        --navbar-background: rgba(28, 28, 30, 0.8);
        --navbar-border: rgba(255, 255, 255, 0.1);
    }
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    color: var(--text-primary);
    line-height: 1.6;
    background: var(--background);
    overflow-x: hidden;
    transition: background-color 0.3s ease, color 0.3s ease;
}

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

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: var(--navbar-background);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 1000;
    border-bottom: 1px solid var(--navbar-border);
    transition: var(--transition);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 16px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo .logo {
    height: 40px;
    width: auto;
    transition: var(--transition);
}

.nav-logo .logo:hover {
    opacity: 0.8;
}

.nav-links {
    display: flex;
    gap: 32px;
    align-items: center;
}

.nav-links a {
    color: var(--text-primary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -4px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--accent-color);
    transition: var(--transition);
}

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

.nav-contact {
    background: var(--accent-color);
    color: white !important;
    padding: 8px 16px;
    border-radius: 20px;
}

.nav-contact::after {
    display: none;
}

.nav-contact:hover {
    background: #0077ed;
    transform: translateY(-2px);
}

.lang-switch {
    padding: 6px 12px !important;
    border: 1.5px solid var(--border-color);
    border-radius: 16px;
    font-size: 12px !important;
    font-weight: 600 !important;
}

.lang-switch::after {
    display: none !important;
}

.lang-switch:hover {
    border-color: var(--accent-color);
    color: var(--accent-color) !important;
    transform: translateY(-2px);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 120px 24px 80px;
    background: linear-gradient(135deg, var(--hero-gradient-start) 0%, var(--hero-gradient-end) 100%);
    transition: var(--transition);
}

.hero-content {
    text-align: center;
    max-width: 800px;
    animation: fadeInUp 1s ease-out;
}

.hero-logo {
    height: 120px;
    width: auto;
    margin-bottom: 40px;
    animation: float 3s ease-in-out infinite;
}

.hero-title {
    font-size: clamp(32px, 5vw, 56px);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: clamp(18px, 2.5vw, 24px);
    color: var(--text-secondary);
    margin-bottom: 40px;
    font-weight: 400;
}

.cta-button {
    display: inline-block;
    background: var(--accent-color);
    color: white;
    padding: 16px 32px;
    border-radius: 24px;
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    transition: var(--transition);
    box-shadow: 0 4px 16px rgba(0, 113, 227, 0.2);
}

.cta-button:hover {
    background: #0077ed;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 113, 227, 0.3);
}

/* Services Section */
.services {
    padding: 120px 24px;
    background: var(--background);
}

.section-title {
    font-size: clamp(36px, 4vw, 48px);
    font-weight: 700;
    text-align: center;
    margin-bottom: 80px;
    letter-spacing: -0.02em;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto;
}

.service-card {
    padding: 40px;
    background: var(--card-background);
    border-radius: 24px;
    transition: var(--transition);
    text-align: center;
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

@media (prefers-color-scheme: dark) {
    .service-card:hover {
        box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
    }
}

.service-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    background: var(--background);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-color);
    transition: var(--transition);
}

.service-card h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 16px;
}

.service-card p {
    color: var(--text-secondary);
    font-size: 16px;
    line-height: 1.6;
}

/* Contact Section */
.contact {
    padding: 120px 24px;
    background: var(--hero-gradient-start);
    transition: var(--transition);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 60px;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.contact-item {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.contact-icon {
    width: 48px;
    height: 48px;
    background: var(--background);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-color);
    flex-shrink: 0;
    transition: var(--transition);
}

.contact-item h4 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.contact-item a {
    color: var(--text-primary);
    text-decoration: none;
    font-size: 18px;
    font-weight: 500;
    transition: var(--transition);
}

.contact-item a:hover {
    color: var(--accent-color);
}

/* Contact Form */
.contact-form {
    background: var(--card-background);
    padding: 40px;
    border-radius: 24px;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
    transition: var(--transition);
}

@media (prefers-color-scheme: dark) {
    .contact-form {
        box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
    }
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    font-size: 16px;
    font-family: inherit;
    transition: var(--transition);
    background: var(--background);
    color: var(--text-primary);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 4px rgba(10, 132, 255, 0.15);
}

@media (prefers-color-scheme: dark) {
    .form-group input:focus,
    .form-group textarea:focus {
        box-shadow: 0 0 0 4px rgba(10, 132, 255, 0.25);
    }
}

.form-group textarea {
    resize: vertical;
}

.submit-button {
    width: 100%;
    padding: 16px;
    background: var(--accent-color);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.submit-button:hover {
    background: #0077ed;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 113, 227, 0.3);
}

.submit-button:active {
    transform: translateY(0);
}

/* Footer */
.footer {
    padding: 40px 24px;
    background: var(--card-background);
    color: var(--text-primary);
    text-align: center;
    transition: var(--transition);
    border-top: 1px solid var(--border-color);
}

.footer p {
    font-size: 14px;
    color: var(--text-secondary);
}

.footer a {
    transition: var(--transition);
}

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

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

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        gap: 16px;
    }

    .nav-links a {
        font-size: 12px;
    }

    .hero {
        padding: 100px 24px 60px;
    }

    .hero-logo {
        height: 80px;
        margin-bottom: 32px;
    }

    .services {
        padding: 80px 24px;
    }

    .section-title {
        margin-bottom: 48px;
    }

    .services-grid {
        gap: 24px;
    }

    .service-card {
        padding: 32px;
    }

    .contact {
        padding: 80px 24px;
    }

    .contact-wrapper {
        gap: 40px;
    }

    .contact-form {
        padding: 32px 24px;
    }
}

@media (max-width: 480px) {
    .nav-logo .logo {
        height: 32px;
    }

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