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

:root {
    --color-black: #000;
    --color-white: #f5f5f7;
    --color-alt: #e5e5f7;
    --color-accent: #2563eb;
    --color-gray: #666;
    --color-gray-light: #d5d5e0;
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-mono: "SF Mono", Monaco, "Cascadia Code", "Roboto Mono", Consolas, monospace;
    --max-width: 800px;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
}

body {
    font-family: var(--font-sans);
    line-height: 1.6;
    color: var(--color-black);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

a {
    color: inherit;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

a:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: rgba(245, 245, 247, 0.9);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--color-gray-light);
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
}

.logo {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.logo-name {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.logo-title {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-gray);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.header-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.lang-toggle {
    background: none;
    border: 1px solid var(--color-gray-light);
    padding: 0.25rem 0.5rem;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    cursor: pointer;
    transition: all 0.15s ease;
    display: flex;
    align-items: center;
    gap: 0.125rem;
}

.lang-toggle:hover {
    border-color: var(--color-accent);
}

.lang-active {
    color: var(--color-black);
    font-weight: 600;
}

.lang-inactive {
    color: var(--color-gray);
}

.lang-divider {
    color: var(--color-gray-light);
}

.nav {
    display: flex;
    gap: var(--spacing-md);
}

.nav a {
    font-size: 0.875rem;
    font-weight: 500;
    transition: color 0.15s ease;
}

.nav a:hover {
    color: var(--color-accent);
    text-decoration: none;
}

.hero {
    padding: var(--spacing-xl) 0;
    min-height: 70vh;
    display: flex;
    align-items: center;
    background-color: var(--color-white);
}

.hero-title {
    font-size: clamp(2.5rem, 8vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: var(--spacing-sm);
}

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

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-gray);
    margin-bottom: var(--spacing-xs);
}

.hero-location {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--color-gray);
    margin-bottom: var(--spacing-md);
}

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    border: 2px solid var(--color-black);
    background-color: var(--color-black);
    color: var(--color-white);
    cursor: pointer;
    transition: all 0.15s ease;
}

.btn:hover {
    background-color: var(--color-accent);
    border-color: var(--color-accent);
    color: var(--color-white);
    text-decoration: none;
}

.btn-primary {
    background-color: var(--color-black);
    border-color: var(--color-black);
    color: var(--color-white);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1rem;
}

.services {
    padding: var(--spacing-xl) 0;
    border-top: 1px solid var(--color-gray-light);
    background-color: var(--color-alt);
}

.section-title {
    font-size: 0.75rem;
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-gray);
    margin-bottom: var(--spacing-md);
}

.services-grid {
    display: grid;
    gap: var(--spacing-md);
}

.service-card {
    padding: var(--spacing-md);
    border: 1px solid var(--color-gray-light);
    background-color: var(--color-white);
    transition: border-color 0.15s ease;
}

.service-card:hover {
    border-color: var(--color-black);
}

.service-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.service-desc {
    font-size: 0.9375rem;
    color: var(--color-gray);
    line-height: 1.5;
}

.about {
    padding: var(--spacing-xl) 0;
    border-top: 1px solid var(--color-gray-light);
    background-color: var(--color-white);
}

.about-content {
    display: grid;
    gap: var(--spacing-md);
}

.about-text {
    font-size: 1.125rem;
    line-height: 1.7;
    max-width: 600px;
}

.languages {
    margin-top: var(--spacing-sm);
}

.languages-title {
    font-size: 0.75rem;
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-gray);
    margin-bottom: var(--spacing-xs);
}

.languages-list {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.languages-list li {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    padding: var(--spacing-xs) var(--spacing-sm);
    background-color: var(--color-alt);
}

.contact {
    padding: var(--spacing-xl) 0;
    border-top: 1px solid var(--color-gray-light);
    background-color: var(--color-alt);
}

.contact-content {
    text-align: center;
}

.contact-text {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.contact-actions {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
}

.contact-email {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--color-gray);
}

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

.footer {
    padding: var(--spacing-md) 0;
    border-top: 1px solid var(--color-gray-light);
    background-color: var(--color-white);
}

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

.footer-copy {
    font-size: 0.75rem;
    color: var(--color-gray);
}

.footer-links {
    display: flex;
    gap: var(--spacing-sm);
}

.footer-links a {
    font-size: 0.75rem;
    font-family: var(--font-mono);
    color: var(--color-gray);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

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

@media (max-width: 600px) {
    .header-inner {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }
    
    .header-right {
        width: 100%;
        justify-content: space-between;
    }
    
    .nav {
        gap: var(--spacing-sm);
    }
    
    .hero {
        padding: var(--spacing-lg) 0;
        min-height: auto;
    }
    
    .services,
    .about,
    .contact {
        padding: var(--spacing-lg) 0;
    }
    
    .footer-inner {
        flex-direction: column;
        gap: var(--spacing-sm);
        text-align: center;
    }
}