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

/* Large Screens (1200px and up) */
@media (min-width: 1200px) {
    .container {
        max-width: 1400px;
    }
    
    .hero-title {
        font-size: 4.5rem;
    }
    
    .section-title {
        font-size: 3.5rem;
    }
}

/* Medium Screens (768px to 1199px) */
@media (max-width: 1199px) {
    .container {
        max-width: 960px;
        padding: 0 var(--spacing-4);
    }
    
    .hero-title {
        font-size: var(--font-size-5xl);
    }
    
    .services-grid,
    .courses-grid,
    .pricing-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }
    
    .features-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-12);
    }
    
    .emergency-content {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-6);
    }
}

/* Small Tablets (768px to 991px) */
@media (max-width: 991px) {
    .nav-menu {
        position: fixed;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: var(--white);
        box-shadow: var(--shadow-lg);
        padding: var(--spacing-6);
        flex-direction: column;
        align-items: stretch;
        gap: var(--spacing-4);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-list {
        flex-direction: column;
        gap: var(--spacing-4);
        width: 100%;
    }
    
    .nav-cta {
        margin-top: var(--spacing-4);
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
    
    .hero-title {
        font-size: var(--font-size-4xl);
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .trust-indicators {
        flex-direction: column;
        gap: var(--spacing-4);
        align-items: center;
    }
    
    .process-steps {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .testimonials-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-6);
    }
}

/* Mobile Landscape (576px to 767px) */
@media (max-width: 767px) {
    :root {
        --font-size-6xl: 2.5rem;
        --font-size-5xl: 2rem;
        --font-size-4xl: 1.75rem;
        --font-size-3xl: 1.5rem;
        --font-size-2xl: 1.25rem;
    }
    
    .container {
        padding: 0 var(--spacing-4);
    }
    
    .section-header {
        margin-bottom: var(--spacing-12);
    }
    
    .hero {
        padding: var(--spacing-16) 0;
        min-height: 80vh;
    }
    
    .hero-title {
        font-size: var(--font-size-4xl);
        line-height: 1.2;
    }
    
    .hero-subtitle {
        font-size: var(--font-size-lg);
    }
    
    .hero-cta .btn {
        width: 100%;
        justify-content: center;
    }
    
    .services-grid,
    .courses-grid,
    .pricing-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-6);
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-6);
    }
    
    .process-steps {
        grid-template-columns: 1fr;
    }
    
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .certifications-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .pricing-card.featured {
        transform: none;
    }
    
    .pricing-card.featured:hover {
        transform: translateY(-8px);
    }
    
    .course-card.featured {
        transform: none;
    }
    
    .course-card.featured:hover {
        transform: translateY(-8px);
    }
    
    .emergency-content {
        text-align: center;
    }
    
    .emergency-icon i {
        font-size: var(--font-size-4xl);
    }
    
    .emergency-title {
        font-size: var(--font-size-2xl);
    }
    
    .emergency-description {
        font-size: var(--font-size-base);
    }
    
    .contact-item {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-3);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .social-links {
        justify-content: center;
    }
    
    .chat-window {
        width: calc(100vw - 2rem);
        left: 50%;
        transform: translateX(-50%);
    }
}

/* Mobile Portrait (up to 575px) */
@media (max-width: 575px) {
    :root {
        --spacing-24: 4rem;
        --spacing-20: 3rem;
        --spacing-16: 2.5rem;
        --spacing-12: 2rem;
    }
    
    .container {
        padding: 0 var(--spacing-3);
    }
    
    .btn-large {
        padding: var(--spacing-3) var(--spacing-6);
        font-size: var(--font-size-base);
    }
    
    .hero {
        padding: var(--spacing-12) 0;
    }
    
    .hero-title {
        font-size: var(--font-size-3xl);
        margin-bottom: var(--spacing-4);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-base);
        margin-bottom: var(--spacing-8);
    }
    
    .trust-indicators {
        gap: var(--spacing-3);
    }
    
    .trust-item {
        font-size: var(--font-size-xs);
        gap: var(--spacing-1);
    }
    
    .section-title {
        font-size: var(--font-size-3xl);
    }
    
    .section-subtitle {
        font-size: var(--font-size-base);
    }
    
    .service-card,
    .course-card,
    .pricing-card {
        padding: var(--spacing-6);
    }
    
    .service-icon,
    .step-icon {
        width: 60px;
        height: 60px;
    }
    
    .service-icon i,
    .step-icon i {
        font-size: var(--font-size-2xl);
    }
    
    .feature-icon {
        width: 50px;
        height: 50px;
    }
    
    .feature-icon i {
        font-size: var(--font-size-xl);
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-8);
    }
    
    .feature-item {
        padding: var(--spacing-4);
    }
    
    .process-step {
        padding: var(--spacing-4);
    }
    
    .step-number {
        width: 30px;
        height: 30px;
        font-size: var(--font-size-base);
    }
    
    .testimonial-card {
        padding: var(--spacing-6);
    }
    
    .testimonial-author {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-3);
    }
    
    .pricing-price {
        flex-direction: column;
        gap: 0;
    }
    
    .price-amount {
        font-size: var(--font-size-4xl);
    }
    
    .emergency {
        padding: var(--spacing-12) 0;
    }
    
    .emergency-content {
        gap: var(--spacing-4);
    }
    
    .emergency-icon i {
        font-size: var(--font-size-3xl);
    }
    
    .emergency-title {
        font-size: var(--font-size-xl);
    }
    
    .certifications-grid {
        grid-template-columns: 1fr;
    }
    
    .certification-item {
        padding: var(--spacing-6);
    }
    
    .cert-logo {
        width: 60px;
        height: 60px;
    }
    
    .cert-logo i {
        font-size: var(--font-size-2xl);
    }
    
    .contact-form {
        padding: var(--spacing-6);
    }
    
    .form-group {
        margin-bottom: var(--spacing-4);
    }
    
    .footer {
        padding: var(--spacing-12) 0 var(--spacing-6);
    }
    
    .footer-content {
        margin-bottom: var(--spacing-8);
    }
    
    .back-to-top {
        width: 45px;
        height: 45px;
        bottom: var(--spacing-4);
        right: var(--spacing-4);
        font-size: var(--font-size-base);
    }
    
    .chat-toggle {
        width: 50px;
        height: 50px;
        font-size: var(--font-size-lg);
    }
    
    .chat-window {
        width: calc(100vw - 1rem);
        height: 350px;
    }
}

/* Extra Small Devices (up to 374px) */
@media (max-width: 374px) {
    .container {
        padding: 0 var(--spacing-2);
    }
    
    .hero-title {
        font-size: var(--font-size-2xl);
    }
    
    .section-title {
        font-size: var(--font-size-2xl);
    }
    
    .btn {
        padding: var(--spacing-2) var(--spacing-4);
        font-size: var(--font-size-sm);
    }
    
    .btn-large {
        padding: var(--spacing-3) var(--spacing-4);
        font-size: var(--font-size-sm);
    }
    
    .service-card,
    .course-card,
    .pricing-card,
    .testimonial-card {
        padding: var(--spacing-4);
    }
    
    .trust-item {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-1);
    }
    
    .pricing-grid {
        gap: var(--spacing-4);
    }
    
    .contact-form {
        padding: var(--spacing-4);
    }
}

/* Print Styles */
@media print {
    .header,
    .nav-toggle,
    .back-to-top,
    .chat-widget,
    .hero-cta,
    .btn {
        display: none !important;
    }
    
    .hero {
        min-height: auto;
        padding: var(--spacing-8) 0;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.4;
        color: #000;
        background: #fff;
    }
    
    .container {
        max-width: none;
        padding: 0;
    }
    
    section {
        padding: var(--spacing-6) 0;
        page-break-inside: avoid;
    }
    
    h1, h2, h3 {
        page-break-after: avoid;
    }
    
    .service-card,
    .course-card,
    .pricing-card {
        box-shadow: none;
        border: 1px solid #ddd;
        page-break-inside: avoid;
    }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    :root {
        --primary-color: #000080;
        --primary-light: #0000ff;
        --gray-600: #000000;
        --gray-700: #000000;
        --gray-800: #000000;
        --gray-900: #000000;
    }
    
    .btn-primary {
        background: #000080;
        border: 2px solid #000080;
    }
    
    .btn-outline,
    .btn-secondary {
        border-width: 3px;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    html {
        scroll-behavior: auto;
    }
    
    [data-aos] {
        animation: none !important;
    }
}

/* Dark Mode Support (Future Enhancement) */
@media (prefers-color-scheme: dark) {
    :root {
        --white: #1a1a1a;
        --gray-50: #2d2d2d;
        --gray-100: #3a3a3a;
        --gray-200: #4a4a4a;
        --gray-300: #5a5a5a;
        --gray-400: #6a6a6a;
        --gray-500: #8a8a8a;
        --gray-600: #a0a0a0;
        --gray-700: #c0c0c0;
        --gray-800: #e0e0e0;
        --gray-900: #ffffff;
    }
    
    .header {
        background-color: rgba(26, 26, 26, 0.95);
        border-bottom-color: var(--gray-200);
    }
    
    .service-card,
    .course-card,
    .pricing-card,
    .testimonial-card,
    .certification-item {
        background-color: var(--gray-100);
    }
    
    .contact-form {
        background-color: var(--gray-100);
    }
    
    .form-group input,
    .form-group select,
    .form-group textarea {
        background-color: var(--gray-50);
        border-color: var(--gray-300);
        color: var(--gray-800);
    }
}

/* Focus Styles for Accessibility */
.btn:focus,
.nav-link:focus,
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: 3px solid var(--primary-light);
    outline-offset: 2px;
}

/* Skip Links for Accessibility */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--primary-color);
    color: var(--white);
    padding: 8px;
    text-decoration: none;
    z-index: 9999;
    border-radius: var(--radius);
}

.skip-link:focus {
    top: 6px;
}

/* Screen Reader Only */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}