/* ===== RESPONSIVE DESIGN ===== */

/* Large Desktop (1280px and up) */
@media (min-width: 1280px) {
    .container {
        max-width: 1280px;
    }
    
    .hero-title {
        font-size: 4rem;
    }
    
    .section-title {
        font-size: 3rem;
    }
}

/* Desktop (1024px to 1279px) */
@media (max-width: 1279px) {
    .container {
        max-width: 1024px;
    }
}

/* Tablet (768px to 1023px) */
@media (max-width: 1023px) {
    .container {
        padding: 0 16px;
    }
    
    /* Navigation */
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 2rem 0;
        gap: 1rem;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-toggle.active .bar:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }
    
    .nav-toggle.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }
    
    /* Hero Section */
    .hero-container {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .hero-image {
        height: 400px;
        order: -1;
    }
    
    /* Features Grid */
    .features-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 1.5rem;
    }
    
    /* Statistics */
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
    
    /* Testimonials */
    .testimonials-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    /* About Section */
    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
    
    .about-graphic {
        width: 250px;
        height: 250px;
    }
    
    /* Contact Section */
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    /* Footer */
    .footer-content {
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
    }
    
    /* Sections */
    section {
        padding: 60px 0;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .section-subtitle {
        font-size: 1.1rem;
    }
}

/* Mobile Large (480px to 767px) */
@media (max-width: 767px) {
    /* Typography */
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    h3 { font-size: 1.5rem; }
    h4 { font-size: 1.25rem; }
    
    .hero-title {
        font-size: 2rem;
        line-height: 1.2;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .section-subtitle {
        font-size: 1rem;
    }
    
    /* Navigation */
    .nav-container {
        padding: 0 16px;
    }
    
    .nav-logo {
        font-size: 1.25rem;
    }
    
    .nav-logo i {
        font-size: 1.5rem;
    }
    
    /* Hero Section */
    .hero {
        padding: 100px 0 60px;
    }
    
    .hero-container {
        padding: 0 16px;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-image {
        height: 300px;
    }
    
    .floating-card {
        padding: 0.75rem 1rem;
        font-size: 0.875rem;
    }
    
    /* Buttons */
    .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }
    
    /* Feature Cards */
    .feature-card {
        padding: 1.5rem;
    }
    
    .feature-icon {
        width: 50px;
        height: 50px;
    }
    
    .feature-icon i {
        font-size: 1.25rem;
    }
    
    .feature-title {
        font-size: 1.25rem;
    }
    
    /* Statistics */
    .stats-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .stat-number {
        font-size: 2.5rem;
    }
    
    /* Testimonials */
    .testimonial-card {
        padding: 1.5rem;
    }
    
    .testimonial-content p {
        font-size: 1rem;
    }
    
    /* About Section */
    .about-graphic {
        width: 200px;
        height: 200px;
    }
    
    .about-graphic i {
        font-size: 3rem;
    }
    
    /* Contact */
    .contact-item {
        flex-direction: column;
        text-align: center;
        gap: 0.5rem;
    }
    
    .contact-form {
        padding: 1.5rem;
    }
    
    /* Footer */
    .footer-content {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        text-align: center;
    }
    
    .footer-section:first-child {
        text-align: center;
    }
    
    .social-links {
        justify-content: center;
    }
    
    /* Sections */
    section {
        padding: 40px 0;
    }
    
    .section-header {
        margin-bottom: 2rem;
    }
    
    /* Modal */
    .modal-content {
        margin: 10% auto;
        padding: 1.5rem;
        width: 95%;
    }
    
    /* Forms */
    .form-group input,
    .form-group textarea {
        padding: 10px 14px;
        font-size: 0.9rem;
    }
    
    /* Tabs */
    .tab-list {
        flex-wrap: wrap;
    }
    
    .tab-item {
        padding: 0.75rem 1rem;
        font-size: 0.9rem;
    }
    
    /* Dropdown */
    .dropdown-toggle {
        padding: 0.5rem 0.75rem;
        min-width: 150px;
        font-size: 0.9rem;
    }
    
    /* Floating Action Button */
    .fab {
        width: 50px;
        height: 50px;
        bottom: 1.5rem;
        right: 1.5rem;
        font-size: 1.25rem;
    }
    
    /* Timeline */
    .timeline {
        padding-left: 1.5rem;
    }
    
    .timeline-marker {
        left: -1.75rem;
        width: 0.75rem;
        height: 0.75rem;
    }
    
    .timeline-content {
        padding: 1rem;
    }
    
    /* Image Gallery */
    .image-gallery {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 0.75rem;
    }
    
    .gallery-item img {
        height: 150px;
    }
}

/* Mobile Small (320px to 479px) */
@media (max-width: 479px) {
    /* Container */
    .container {
        padding: 0 12px;
    }
    
    /* Typography */
    .hero-title {
        font-size: 1.75rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    /* Navigation */
    .nav-container {
        padding: 0 12px;
    }
    
    .nav-logo {
        font-size: 1.1rem;
    }
    
    /* Hero Section */
    .hero-container {
        padding: 0 12px;
    }
    
    .hero-image {
        height: 250px;
    }
    
    .floating-card {
        padding: 0.5rem 0.75rem;
        font-size: 0.8rem;
    }
    
    /* Buttons */
    .btn {
        padding: 8px 16px;
        font-size: 0.85rem;
    }
    
    /* Feature Cards */
    .features-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .feature-card {
        padding: 1rem;
    }
    
    /* Statistics */
    .stat-number {
        font-size: 2rem;
    }
    
    .stat-label {
        font-size: 1rem;
    }
    
    /* About Section */
    .about-graphic {
        width: 150px;
        height: 150px;
    }
    
    .about-graphic i {
        font-size: 2.5rem;
    }
    
    /* Contact */
    .contact-form {
        padding: 1rem;
    }
    
    /* Sections */
    section {
        padding: 30px 0;
    }
    
    /* Modal */
    .modal-content {
        margin: 15% auto;
        padding: 1rem;
        width: 98%;
    }
    
    /* Image Gallery */
    .image-gallery {
        grid-template-columns: 1fr;
        gap: 0.5rem;
    }
    
    .gallery-item img {
        height: 200px;
    }
}

/* Touch Device Optimizations */
@media (hover: none) and (pointer: coarse) {
    /* Increase touch targets */
    .btn {
        min-height: 44px;
        padding: 12px 24px;
    }
    
    .nav-link {
        padding: 12px 0;
    }
    
    .tab-item {
        min-height: 44px;
        padding: 12px 1rem;
    }
    
    .dropdown-item {
        min-height: 44px;
        padding: 12px 1rem;
    }
    
    /* Remove hover effects */
    .feature-card:hover,
    .testimonial-card:hover,
    .card-hover:hover {
        transform: none;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    }
    
    .btn-primary:hover {
        transform: none;
        box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
    }
    
    .fab:hover {
        transform: none;
        box-shadow: 0 4px 20px rgba(37, 99, 235, 0.3);
    }
}

/* High DPI Displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    /* Optimize for retina displays */
    .hero-graphic,
    .about-graphic {
        background-image: linear-gradient(135deg, #2563EB, #10B981);
    }
}

/* Landscape Orientation on Mobile */
@media (max-width: 767px) and (orientation: landscape) {
    .hero {
        padding: 80px 0 40px;
    }
    
    .hero-container {
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
    }
    
    .hero-image {
        height: 250px;
    }
    
    section {
        padding: 30px 0;
    }
}

/* Print Styles */
@media print {
    * {
        background: transparent !important;
        color: black !important;
        box-shadow: none !important;
        text-shadow: none !important;
    }
    
    .header,
    .footer,
    .nav-toggle,
    .fab,
    .modal {
        display: none !important;
    }
    
    .hero {
        padding: 20px 0;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
    }
    
    .hero-image {
        display: none;
    }
    
    section {
        padding: 20px 0;
        page-break-inside: avoid;
    }
    
    .feature-card,
    .testimonial-card {
        page-break-inside: avoid;
        border: 1px solid #ccc;
        margin-bottom: 20px;
    }
    
    a {
        text-decoration: underline;
    }
    
    a[href^="http"]:after {
        content: " (" attr(href) ")";
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .floating-card {
        animation: none;
    }
    
    .spinner {
        animation: none;
        border: 4px solid #E5E7EB;
        border-top: 4px solid #2563EB;
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-primary: #111827;
        --bg-secondary: #1F2937;
        --text-primary: #F9FAFB;
        --text-secondary: #D1D5DB;
        --border-color: #374151;
    }
    
    /* Apply dark mode styles if user prefers dark theme */
    /* This can be expanded based on requirements */
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    .btn-primary {
        background: #000;
        border: 2px solid #000;
    }
    
    .btn-secondary {
        background: #fff;
        color: #000;
        border: 2px solid #000;
    }
    
    .feature-card,
    .testimonial-card {
        border: 2px solid #000;
    }
}