:root {
    --primary-gradient: linear-gradient(135deg, #25242c 0%, #3d3b47 100%);
    --secondary-gradient: linear-gradient(135deg, #c0c0c0 0%, #8a8a8a 100%);
    --accent-gradient: linear-gradient(135deg, #4ade80 0%, #16a34a 100%);
    --text-primary: #25242c;
    --text-secondary: #6b7280;
    --text-light: #9ca3af;
    --background: #ffffff;
    --background-alt: #f9fafb;
    --background-dark: #25242c;
    --border: #e5e7eb;
    --success: #16a34a;
    --warning: #f59e0b;
    --danger: #ef4444;
    --logo-light: #c0c0c0;
    --shadow: 0 10px 30px rgba(37, 36, 44, 0.1);
    --shadow-lg: 0 20px 60px rgba(37, 36, 44, 0.15);
    --border-radius: 16px;
    --border-radius-lg: 24px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

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

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
    transition: var(--transition);
}

.header.scrolled {
    box-shadow: var(--shadow);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 0;
}

.logo {
    font-weight: 800;
    font-size: 24px;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    text-decoration: none;
}

.nav-links {
    display: none;
    gap: 32px;
    list-style: none;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    transition: var(--transition);
}

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

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: var(--primary-gradient);
    color: white;
    text-decoration: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: 16px;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    box-shadow: var(--shadow);
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.cta-button.secondary {
    background: white;
    color: var(--text-primary);
    border: 2px solid var(--border);
    box-shadow: none;
}

.cta-button.secondary:hover {
    border-color: var(--text-primary);
}

/* Mobile Navigation */
.mobile-menu-toggle {
    display: block;
    background: none;
    border: none;
    font-size: 24px;
    color: var(--text-primary);
    cursor: pointer;
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    z-index: 9999;
    padding: 100px 24px 24px;
}

.mobile-menu.active {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    gap: 32px;
}

.mobile-menu a {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
    text-decoration: none;
}

.mobile-close {
    position: absolute;
    top: 24px;
    right: 24px;
    background: none;
    border: none;
    font-size: 32px;
    color: var(--text-primary);
    cursor: pointer;
}

/* Footer */
.footer {
    padding: 60px 0 32px;
    background: var(--background-dark);
    color: white;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 48px;
    margin-bottom: 48px;
}

.footer-section h3 {
    font-weight: 700;
    margin-bottom: 16px;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 8px;
}

.footer-section ul li a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: var(--transition);
}

.footer-section ul li a:hover {
    color: white;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.7);
}

/* Responsive Design */
@media (min-width: 768px) {
    .nav-links {
        display: flex;
    }

    .mobile-menu-toggle {
        display: none;
    }
}

@media (max-width: 767px) {
    .container {
        padding: 0 16px;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

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

.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease-out;
}

.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}

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

/* Focus styles */
.cta-button:focus,
.nav-links a:focus {
    outline: 2px solid #25242c;
    outline-offset: 2px;
}

/* High contrast mode */
@media (prefers-contrast: high) {
    :root {
        --text-primary: #000000;
        --text-secondary: #333333;
        --border: #666666;
    }
}