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

:root {
    --color-bg: #0F1115;
    --color-surface: #161A22;
    --color-surface-light: #161A22;
    --color-text: #E6E8EE;
    --color-text-dim: #A9AFBD;
    --color-accent: #4C6FFF;
    --color-accent-hover: #3F5CE6;
    --color-border: #161A22;
    --color-white: #FFFFFF;
    
    --font-system: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-mono: "SF Mono", Monaco, "Cascadia Code", "Roboto Mono", Consolas, "Courier New", monospace;
    
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    --spacing-xxl: 6rem;
    
    --max-width: 1200px;
    --max-width-narrow: 800px;
}

body {
    font-family: var(--font-system);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    font-size: 16px;
}

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

/* Navigation */
.nav {
    position: sticky;
    top: 0;
    background-color: rgba(15, 17, 21, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    z-index: 100;
}

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

.nav-logo {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text);
}

.nav-links {
    display: flex;
    gap: var(--spacing-md);
    list-style: none;
}

.nav-links a {
    color: var(--color-text-dim);
    text-decoration: none;
    font-size: 0.95rem;
    transition: color 0.2s;
}

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

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

.hero h1 {
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

.hero-subline {
    font-size: 1.25rem;
    color: var(--color-text-dim);
    max-width: var(--max-width-narrow);
    margin: 0 auto var(--spacing-lg);
    line-height: 1.5;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-lg);
}

.hero-points {
    list-style: none;
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    font-size: 0.95rem;
    color: var(--color-text-dim);
}

.hero-points li::before {
    content: "•";
    color: var(--color-accent);
    font-weight: bold;
    margin-right: var(--spacing-xs);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.875rem 1.75rem;
    border-radius: 0.375rem;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.2s;
    border: 2px solid transparent;
    cursor: pointer;
}

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

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

.btn-primary:hover {
    background-color: var(--color-accent-hover);
}

.btn-secondary {
    background-color: transparent;
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.btn-secondary:hover {
    border-color: var(--color-accent-hover);
    color: var(--color-accent-hover);
}

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

section h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

/* Work section */
.work {
    background-color: var(--color-surface);
}

.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.card {
    background-color: var(--color-bg);
    padding: var(--spacing-md);
    border-radius: 0.5rem;
    border: 1px solid var(--color-border);
}

.card h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.card ul {
    list-style: none;
}

.card ul li {
    padding: var(--spacing-xs) 0;
    color: var(--color-text-dim);
}

.card ul li::before {
    content: "→";
    color: var(--color-accent);
    font-weight: bold;
    margin-right: var(--spacing-xs);
}

/* Fit section */
.fit-columns {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    max-width: var(--max-width-narrow);
    margin: 0 auto;
}

.fit-column h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.fit-column ul {
    list-style: none;
}

.fit-column ul li {
    padding: var(--spacing-xs) 0;
    color: var(--color-text-dim);
}

.fit-column ul li::before {
    content: "✓";
    color: var(--color-accent);
    font-weight: bold;
    margin-right: var(--spacing-xs);
}

.fit-column:last-child ul li::before {
    content: "✗";
}

/* Process section */
.process {
    background-color: var(--color-surface);
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.process-step {
    padding: var(--spacing-md);
    background-color: var(--color-bg);
    border-radius: 0.5rem;
    border: 1px solid var(--color-border);
}

.process-number {
    width: 3rem;
    height: 3rem;
    background-color: var(--color-accent);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.process-step h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-xs);
}

.process-step p {
    color: var(--color-text-dim);
    margin-bottom: var(--spacing-sm);
}

.process-output {
    font-size: 0.875rem;
    color: var(--color-accent);
    font-family: var(--font-mono);
}

/* Proof section */
.proof-intro {
    text-align: center;
    font-size: 1.25rem;
    margin-bottom: var(--spacing-md);
}

.proof-points {
    list-style: none;
    max-width: var(--max-width-narrow);
    margin: 0 auto var(--spacing-lg);
}

.proof-points li {
    padding: var(--spacing-sm) 0;
    color: var(--color-text-dim);
}

.proof-points li::before {
    content: "✓";
    color: var(--color-accent);
    font-weight: bold;
    margin-right: var(--spacing-sm);
}

.proof-products {
    text-align: center;
    margin-top: var(--spacing-lg);
}

.proof-products h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.proof-products ul {
    list-style: none;
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.proof-link {
    color: var(--color-accent);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color 0.2s;
}

.proof-link:hover,
.proof-link:focus {
    border-bottom-color: var(--color-accent);
}

/* FAQ section */
.faq {
    background-color: var(--color-surface);
}

.faq-list {
    max-width: var(--max-width-narrow);
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid var(--color-border);
}

.faq-question {
    width: 100%;
    background: none;
    border: none;
    color: var(--color-text);
    font-family: inherit;
    font-size: 1.125rem;
    font-weight: 600;
    padding: var(--spacing-md) 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    text-align: left;
    transition: color 0.2s;
}

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

.faq-icon {
    font-size: 1.5rem;
    transition: transform 0.3s;
}

.faq-question[aria-expanded="true"] .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
}

.faq-answer p {
    padding-bottom: var(--spacing-md);
    color: var(--color-text-dim);
    line-height: 1.7;
}

/* Contact section */
.contact-intro {
    text-align: center;
    font-size: 1.125rem;
    margin-bottom: var(--spacing-sm);
}

.contact-questions {
    list-style: none;
    max-width: var(--max-width-narrow);
    margin: 0 auto var(--spacing-lg);
}

.contact-questions li {
    padding: var(--spacing-xs) 0;
    color: var(--color-text-dim);
    text-align: center;
}

.contact-questions li::before {
    content: "→";
    color: var(--color-accent);
    font-weight: bold;
    margin-right: var(--spacing-xs);
}

.contact-options {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-md);
}

.contact-secondary {
    text-align: center;
    font-size: 0.95rem;
    color: var(--color-text-dim);
    max-width: var(--max-width-narrow);
    margin: 0 auto;
}

.contact-secondary a {
    color: var(--color-text);
    text-decoration: none;
    border-bottom: 1px solid var(--color-border);
    transition: border-color 0.2s;
}

.contact-secondary a:hover,
.contact-secondary a:focus {
    border-color: var(--color-accent);
}

/* Footer */
.footer {
    background-color: var(--color-surface);
    padding: var(--spacing-lg) 0;
    text-align: center;
    border-top: 1px solid var(--color-border);
}

.footer p {
    color: var(--color-text-dim);
    font-size: 0.875rem;
}

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

.footer-legal a {
    color: var(--color-text-dim);
    text-decoration: none;
    transition: color 0.2s;
}

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

/* Responsive adjustments */
@media (max-width: 768px) {
    .nav-links {
        gap: var(--spacing-sm);
        font-size: 0.875rem;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero-subline {
        font-size: 1.125rem;
    }
    
    .hero-points {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-xs);
    }
    
    section h2 {
        font-size: 1.75rem;
    }
    
    .cards {
        grid-template-columns: 1fr;
    }
    
    .fit-columns {
        grid-template-columns: 1fr;
    }
    
    .process-steps {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .nav-content {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .nav-links {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .hero {
        padding: var(--spacing-lg) 0;
    }
    
    .hero h1 {
        font-size: 1.75rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: stretch;
    }
    
    .btn {
        text-align: center;
    }
}

/* Focus styles for accessibility */
a:focus,
button:focus {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

/* Language switcher */
.lang-switcher {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.lang-btn {
    background: none;
    border: 1px solid var(--color-border);
    color: var(--color-text-dim);
    padding: 0.375rem 0.75rem;
    border-radius: 0.25rem;
    cursor: pointer;
    font-size: 0.875rem;
    font-family: var(--font-system);
    transition: all 0.2s;
}

.lang-btn:hover,
.lang-btn:focus {
    border-color: var(--color-accent);
    color: var(--color-accent);
    outline: none;
}

.lang-btn.active {
    background-color: var(--color-accent);
    border-color: var(--color-accent);
    color: var(--color-white);
}

/* Legal pages */
.legal-page {
    max-width: var(--max-width-narrow);
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-sm);
}

.legal-page h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

.legal-page h2 {
    font-size: 1.75rem;
    font-weight: 600;
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.legal-page h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-xs);
    color: var(--color-text);
}

.legal-page p {
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-dim);
    line-height: 1.7;
}

.legal-page ul,
.legal-page ol {
    margin-bottom: var(--spacing-sm);
    padding-left: var(--spacing-md);
    color: var(--color-text-dim);
}

.legal-page li {
    margin-bottom: var(--spacing-xs);
}

.legal-page a {
    color: var(--color-accent);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color 0.2s;
}

.legal-page a:hover,
.legal-page a:focus {
    border-bottom-color: var(--color-accent);
}

.legal-page .placeholder {
    background-color: var(--color-surface-light);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-left: 3px solid var(--color-accent);
    font-style: italic;
    color: var(--color-text-dim);
}

.legal-page .back-link {
    display: inline-block;
    margin-bottom: var(--spacing-md);
    color: var(--color-accent);
    text-decoration: none;
}

.legal-page .back-link:hover {
    text-decoration: underline;
}

/* Smooth scroll */
html {
    scroll-behavior: smooth;
}