/* Layout CSS - Header, Footer */

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: rgb(255 255 255);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

.header-content {
    height: 90px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    transition: transform 0.3s ease;
}

.logo:hover {
    transform: scale(1.02);
}

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

.nav-link {
    font-weight: 500;
    color: var(--color-text);
    position: relative;
    padding: 0.5rem 0;
    font-size: 0.95rem;
    letter-spacing: 0.3px;
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-primary);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-accent);
    transition: width 0.3s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.5rem;
    color: var(--color-primary);
}

/* Footer */
.footer {
    background: var(--gradient-primary);
    color: white;
    padding: var(--spacing-lg) 0 var(--spacing-md);
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iMjAiIGhlaWdodD0iMjAiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyI+PGNpcmNsZSBjeD0iMSIgY3k9IjEiIHI9IjEiIGZpbGw9InJnYmEoMjU1LDI1NSwyNTUsMC4wNSkiLz48L3N2Zz4=');
    opacity: 0.3;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    position: relative;
    z-index: 1;
}

.footer-brand h3 {
    color: white;
    margin-bottom: var(--spacing-sm);
    font-size: 1.5rem;
}

.footer-brand p {
    color: #94A3B8;
    /* Slate 400 */
    max-width: 300px;
    font-size: 0.95rem;
}

.footer-links h4 {
    color: white;
    font-size: 1.1rem;
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
}

.footer-links ul li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: #CBD5E1;
    /* Slate 300 */
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: var(--color-accent);
    padding-left: 4px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-md);
    text-align: center;
    color: #94A3B8;
    font-size: 0.9rem;
    position: relative;
    z-index: 1;
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        /* Mobile menu logic in JS */
        position: absolute;
        top: 90px;
        left: 0;
        width: 100%;
        background-color: white;
        flex-direction: column;
        padding: var(--spacing-md);
        box-shadow: var(--shadow-lg);
        border-bottom: 1px solid var(--color-border);
    }

    .nav-links.open {
        display: flex;
    }

    .mobile-menu-btn {
        display: block;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
}