/* ============================================
   Responsive Design
   ============================================ */

/* Tablet (768px and below) */
@media (max-width: 768px) {
    :root {
        --header-height: 70px;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.125rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .hero-buttons .btn {
        width: 100%;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .gallery-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .about-features {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .nav {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: var(--color-bg-section);
        box-shadow: var(--shadow-lg);
        border-top: 1px solid var(--color-gray);
        max-height: 0;
        overflow: hidden;
        transition: max-height var(--transition-base);
    }
    
    .nav.active {
        max-height: 400px;
    }
    
    .nav-list {
        flex-direction: column;
        padding: var(--spacing-lg);
        gap: var(--spacing-md);
        align-items: flex-start;
    }
    
    .nav-link {
        width: 100%;
        padding: var(--spacing-sm) 0;
        color: var(--color-text);
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .header-actions .btn-primary {
        display: none;
    }
    
    /* Add Call Us button to mobile menu */
    .nav-call-button {
        display: block;
        width: 100%;
        margin-top: var(--spacing-md);
        padding-top: var(--spacing-md);
        border-top: 1px solid var(--color-gray);
    }
    
    .nav-call-button .btn {
        width: 100%;
    }
    
    /* Floating Call Button (Mobile Only) */
    .floating-call-btn {
        display: flex;
        align-items: center;
        gap: var(--spacing-xs);
        position: fixed;
        bottom: var(--spacing-lg);
        right: var(--spacing-md);
        background: var(--color-primary);
        color: var(--color-white);
        padding: var(--spacing-sm) var(--spacing-md);
        border-radius: 50px;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
        z-index: 999;
        text-decoration: none;
        font-weight: 600;
        font-size: 0.9rem;
        transition: all var(--transition-base);
        animation: pulse 2s infinite;
    }
    
    .floating-call-btn:hover,
    .floating-call-btn:active {
        background: var(--color-primary-dark);
        transform: scale(1.05);
        box-shadow: 0 6px 16px rgba(0, 0, 0, 0.4);
    }
    
    .floating-call-btn svg {
        flex-shrink: 0;
    }
    
    .floating-call-btn span {
        white-space: nowrap;
    }
    
    @keyframes pulse {
        0%, 100% {
            box-shadow: 0 4px 12px rgba(30, 58, 138, 0.4);
        }
        50% {
            box-shadow: 0 4px 20px rgba(30, 58, 138, 0.6);
        }
    }
}

/* Mobile (480px and below) */
@media (max-width: 480px) {
    :root {
        --spacing-xl: 2rem;
        --spacing-2xl: 3rem;
    }
    
    /* Adjust floating button for smaller screens */
    .floating-call-btn {
        bottom: var(--spacing-md);
        right: var(--spacing-sm);
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: 0.85rem;
    }
    
    .floating-call-btn span {
        display: none; /* Hide text on very small screens, show only icon */
    }
    
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    section {
        padding: var(--spacing-xl) 0;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .hero {
        min-height: 80vh;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .btn-large {
        padding: var(--spacing-sm) var(--spacing-lg);
        font-size: 1rem;
    }
    
    .service-card {
        padding: var(--spacing-lg);
    }
    
    .service-title {
        font-size: 1.5rem;
    }
    
    .gallery-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-form {
        padding: var(--spacing-lg);
    }
    
    .logo-image {
        height: 45px;
    }
    
    .contact-logo {
        width: 200px;
    }
    
    .lightbox-close,
    .lightbox-prev,
    .lightbox-next {
        width: 40px;
        height: 40px;
        font-size: 1.5rem;
    }
    
    .lightbox-close {
        top: 10px;
        right: 10px;
    }
    
    .lightbox-prev {
        left: 10px;
    }
    
    .lightbox-next {
        right: 10px;
    }
}

/* Large screens (1200px and above) */
@media (min-width: 1200px) {
    .hero-title {
        font-size: 5rem;
    }
    
    .section-title {
        font-size: 3rem;
    }
    
    .services-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Print styles */
@media print {
    .header,
    .menu-toggle,
    .contact-form,
    .footer,
    .lightbox {
        display: none;
    }
    
    .hero {
        min-height: auto;
        padding: var(--spacing-xl) 0;
    }
    
    section {
        page-break-inside: avoid;
    }
}