/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-light);
    z-index: 1000;
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-md);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.5rem;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
}

.nav-brand i {
    color: var(--primary-color);
    font-size: 1.75rem;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-menu a {
    color: var(--text-secondary);
    font-weight: 500;
    transition: var(--transition-fast);
    position: relative;
}

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

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition-fast);
}

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

.nav-menu .btn::after {
    display: none;
}

.nav-menu .btn:hover::after {
    display: none;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 0.25rem;
    cursor: pointer;
}

.nav-toggle span {
    width: 1.5rem;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition-fast);
}

/* Section Layout */
section {
    padding: 5rem 0;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.section-header h2 {
    margin-bottom: 1rem;
}

.section-header p {
    font-size: 1.125rem;
    color: var(--text-secondary);
}

/* Grid Layouts */
.grid {
    display: grid;
    gap: 2rem;
}

.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

/* Footer */
.footer {
    background: var(--bg-dark);
    color: var(--text-white);
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 4rem;
    margin-bottom: 3rem;
}

.footer-brand {
    max-width: 400px;
}

.footer-brand .nav-brand {
    color: var(--text-white);
    margin-bottom: 1rem;
}

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

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.footer-column h4 {
    color: var(--text-white);
    margin-bottom: 1rem;
    font-size: 1.125rem;
}

.footer-column a {
    display: block;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 0.5rem;
    transition: var(--transition-fast);
}

.footer-column a:hover {
    color: var(--text-white);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.7);
    margin: 0;
}

.footer-legal {
    display: flex;
    gap: 2rem;
}

.footer-legal a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.875rem;
}

.footer-legal a:hover {
    color: var(--text-white);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .features-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-menu.active {
        display: flex;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-primary);
        flex-direction: column;
        padding: 2rem;
        box-shadow: var(--shadow-lg);
        gap: 1rem;
    }
    
    section {
        padding: 3rem 0;
    }
    
    .section-header {
        margin-bottom: 2rem;
    }
    
    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .pricing-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .footer-legal {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 0.75rem;
    }
    
    .navbar .container {
        padding: 0.75rem;
    }
    
    section {
        padding: 2rem 0;
    }
    
    .features-grid {
        gap: 1rem;
    }
    
    .pricing-grid {
        gap: 1rem;
    }
}

/* Scroll Behavior */
html {
    scroll-padding-top: 80px;
}

/* Focus States */
*:focus {
    outline: none;
}

button:focus,
.btn:focus {
    outline: none;
}

/* Print Styles */
@media print {
    .navbar,
    .footer {
        display: none;
    }
    
    section {
        padding: 1rem 0;
        break-inside: avoid;
    }
    
    .hero {
        page-break-after: always;
    }
}