/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --color-bg: #ffffff;
    --color-text: #1d1d1f;
    --color-text-secondary: #6e6e73;
    --color-accent: #0071e3;
    --color-accent-hover: #0077ed;
    --color-border: #d2d2d7;
    --color-shadow: rgba(0, 0, 0, 0.04);
    --max-width: 800px;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    --border-radius: 8px;
    --transition: 0.2s ease;
}

@media (prefers-color-scheme: dark) {
    :root {
        --color-bg: #000000;
        --color-text: #f5f5f7;
        --color-text-secondary: #a1a1a6;
        --color-border: #424245;
        --color-shadow: rgba(0, 0, 0, 0.3);
    }
}

@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    font-size: 17px;
    line-height: 1.47059;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Skip link */
.skip-link {
    position: absolute;
    top: -100px;
    left: 0;
    background: var(--color-accent);
    color: white;
    padding: var(--spacing-sm);
    text-decoration: none;
    z-index: 1000;
    border-radius: var(--border-radius);
}

.skip-link:focus {
    top: var(--spacing-sm);
    left: var(--spacing-sm);
}

/* Container */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Header */
.header {
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--color-border);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.logo {
    display: flex;
    align-items: baseline;
    gap: var(--spacing-xs);
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--color-text);
}

.logo-legal {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    font-weight: 400;
}

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

.nav a {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.9375rem;
    transition: color var(--transition);
}

.nav a:hover,
.nav a:focus {
    color: var(--color-accent);
    outline: none;
}

.nav a:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 4px;
    border-radius: 4px;
}

/* Hero */
.hero {
    padding: var(--spacing-xl) 0;
    text-align: center;
}

.hero-title {
    font-size: 3rem;
    font-weight: 600;
    letter-spacing: -0.03em;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
    line-height: 1.1;
}

.hero-tagline {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    font-weight: 400;
}

/* Sections */
.section {
    padding: var(--spacing-lg) 0;
}

.section-title {
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

.section-content {
    font-size: 1.0625rem;
    line-height: 1.64706;
    color: var(--color-text-secondary);
    max-width: 65ch;
}

/* Contact */
.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.address {
    font-style: normal;
    color: var(--color-text-secondary);
    line-height: 1.64706;
}

.email a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color var(--transition);
}

.email a:hover,
.email a:focus {
    color: var(--color-accent-hover);
    outline: none;
}

.email a:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 4px;
    border-radius: 4px;
}

/* Legal */
.legal .section-content {
    line-height: 2;
}

.legal strong {
    color: var(--color-text);
    font-weight: 600;
}

/* Footer */
.footer {
    margin-top: var(--spacing-xl);
    padding: var(--spacing-lg) 0;
    border-top: 1px solid var(--color-border);
}

.footer .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.copyright {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

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

.footer-nav a {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color var(--transition);
}

.footer-nav a:hover,
.footer-nav a:focus {
    color: var(--color-accent);
    outline: none;
}

.footer-nav a:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 4px;
    border-radius: 4px;
}

/* Responsive */
@media (max-width: 768px) {
    :root {
        --spacing-lg: 3rem;
        --spacing-xl: 4rem;
    }
    
    .hero-title {
        font-size: 2.25rem;
    }
    
    .hero-tagline {
        font-size: 1.125rem;
    }
    
    .header-content {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .footer .container {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .section-content {
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .hero-title {
        font-size: 1.875rem;
    }
    
    .hero-tagline {
        font-size: 1rem;
    }
    
    .nav {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
}