/* =====================================
   Responsive Stylesheet
   Mobile-first responsive design
   ===================================== */

/* ===================
   Mobile Breakpoints
   =================== */

/* Large screens (desktops) */
@media (max-width: 1200px) {
    .hero-content {
        gap: var(--spacing-2xl);
    }
    
    .hero-title {
        font-size: var(--text-4xl);
    }
    
    .section-title {
        font-size: var(--text-3xl);
    }
    
    /* Recommendations Section Tablet */
    .videos-row {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: var(--spacing-lg);
    }
}

/* Medium screens (tablets) */
@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    /* Header Responsive */
    .main-navigation {
        padding: var(--spacing-md) 0;
        position: relative;
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        justify-content: space-between;
    }
    
    .site-logo img {
        width: 100px;
        height: 50px;
    }
    
    .site-title {
        font-size: var(--text-lg);
    }
    
    /* Mobile Menu */
    .mobile-menu-toggle {
        display: flex;
        order: -1; /* Put hamburger first (rightmost in RTL) */
    }
    
    .site-logo {
        order: 1;
    }
    
    .header-actions {
        order: 2;
    }
    
    .menu-list {
        display: none; /* Hide by default on mobile */
    }
    
    #primary-menu {
        position: absolute;
        top: 100%;
        right: 0;
        left: 0;
        background-color: var(--background-primary);
        box-shadow: var(--shadow-lg);
        border-top: 1px solid var(--border-light);
        opacity: 0;
        visibility: hidden;
        transform: translateY(-10px);
        transition: all var(--transition-normal);
        z-index: var(--z-dropdown);
        order: 3;
        width: 100%;
        /* Ensure the menu container itself is properly displayed */
        display: block;
    }
    
    #primary-menu.is-active {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
        /* Make sure it's definitely visible when active */
        display: block !important;
    }
    
    #primary-menu.is-active .menu-list {
        display: flex; /* Show when menu is active */
        flex-direction: column;
        gap: 0;
        padding: var(--spacing-md) 0;
    }
    
    .menu-item {
        width: 100%;
        border-bottom: 1px solid var(--border-light);
    }
    
    .menu-item:last-child {
        border-bottom: none;
    }
    
    .menu-link {
        padding: var(--spacing-md) var(--spacing-lg);
        min-height: 48px;
        border-radius: 0;
        justify-content: flex-start;
    }
    
    .header-actions {
        gap: var(--spacing-sm);
    }
    
    .header-actions .btn-primary {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--text-sm);
    }
    
    /* Dropdown Menu Mobile */
    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: none;
        background-color: var(--background-secondary);
        margin: 0;
        border-radius: 0;
        max-height: 0;
        overflow: hidden;
        transition: max-height var(--transition-normal);
    }
    
    .has-dropdown.is-active .dropdown-menu {
        max-height: 200px;
    }
    
    .dropdown-link {
        padding: var(--spacing-sm) var(--spacing-xl);
    }
    
    /* Hero Section Mobile */
    .hero-section {
        padding: var(--spacing-3xl) 0;
        min-height: 500px;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
        text-align: center;
    }
    
    .hero-title {
        font-size: var(--text-3xl);
    }
    
    .hero-subtitle {
        font-size: var(--text-lg);
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    /* Features Section Mobile */
    .features-section {
        padding: var(--spacing-3xl) 0;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .feature-card {
        padding: var(--spacing-lg);
    }
    
    /* About Section Mobile */
    .about-section {
        padding: var(--spacing-3xl) 0;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }
    
    .about-text {
        text-align: center;
    }
    
    .about-description p {
        font-size: var(--text-base);
    }
    
    .about-images .image-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .about-images img {
        height: 200px;
    }
    
    /* Services Section Mobile */
    .services-section {
        padding: var(--spacing-3xl) 0;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .service-content {
        padding: var(--spacing-lg);
    }
    
    /* Gallery Section Mobile */
    .gallery-section {
        padding: var(--spacing-3xl) 0;
    }
    
    .gallery-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .gallery-item img {
        height: 200px;
    }
    
    /* Testimonials Section Mobile */
    .testimonials-section {
        padding: var(--spacing-3xl) 0;
    }
    
    .testimonials-slider {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .testimonial-card {
        padding: var(--spacing-lg);
    }
    
    .testimonial-text {
        font-size: var(--text-base);
        padding: 0 var(--spacing-md);
    }
    
    /* Recommendations Section Mobile */
    .recommendations-section {
        padding: var(--spacing-3xl) 0;
    }
    
    .videos-row {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .video-card {
        margin-bottom: var(--spacing-lg);
    }
    
    .category-title {
        font-size: var(--text-xl);
        margin-bottom: var(--spacing-lg);
    }
    
    /* Contact Section Mobile */
    .contact-section {
        padding: var(--spacing-3xl) 0;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }
    
    .contact-form-container {
        padding: var(--spacing-xl);
    }
    
    /* Footer Mobile */
    .site-footer {
        padding: var(--spacing-2xl) 0 var(--spacing-lg);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
        text-align: center;
    }
    
    .footer-logo {
        justify-content: center;
    }
    
    .social-links {
        justify-content: center;
    }
}

/* Small screens (phones) */
@media (max-width: 480px) {
    /* Container adjustments */
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    /* Typography adjustments */
    .hero-title {
        font-size: var(--text-2xl);
        line-height: 1.2;
    }
    
    .section-title {
        font-size: var(--text-xl);
    }
    
    .hero-subtitle {
        font-size: var(--text-base);
    }
    
    /* Button adjustments */
    .btn-primary,
    .btn-secondary {
        padding: var(--spacing-md) var(--spacing-lg);
        font-size: var(--text-sm);
        min-width: auto;
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-md);
    }
    
    .hero-actions .btn-primary,
    .hero-actions .btn-secondary {
        width: 100%;
        max-width: 280px;
    }
    
    /* Hero section adjustments */
    .hero-section {
        padding: var(--spacing-2xl) 0;
        min-height: 400px;
    }
    
    /* Section padding adjustments */
    .features-section,
    .about-section,
    .services-section,
    .gallery-section,
    .testimonials-section,
    .recommendations-section,
    .contact-section {
        padding: var(--spacing-2xl) 0;
    }
    
    /* Recommendations Section Small Mobile */
    .video-category {
        margin-bottom: var(--spacing-2xl);
    }
    
    .category-title {
        font-size: var(--text-lg);
        margin-bottom: var(--spacing-md);
    }
    
    .videos-row {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .video-info {
        padding: var(--spacing-md);
    }
    
    .video-info h4 {
        font-size: var(--text-base);
    }
    
    .video-info p {
        font-size: var(--text-xs);
    }
    
    /* Card padding adjustments */
    .feature-card,
    .service-content,
    .testimonial-card {
        padding: var(--spacing-md);
    }
    
    /* Contact form adjustments */
    .contact-form-container {
        padding: var(--spacing-lg);
    }
    
    .form-grid {
        grid-template-columns: 1fr;
    }
    
    /* Logo adjustments */
    .site-logo img {
        width: 80px;
        height: 40px;
    }
    
    .site-title {
        font-size: var(--text-base);
    }
    
    /* Menu spacing */
    .menu-link {
        padding: var(--spacing-md);
        min-height: 44px;
    }
    
    /* Testimonial quotes */
    .testimonial-text::before,
    .testimonial-text::after {
        font-size: 2rem;
    }
    
    .testimonial-text::before {
        top: -5px;
    }
    
    .testimonial-text::after {
        bottom: -15px;
    }
    
    /* Gallery overlay */
    .gallery-overlay {
        padding: var(--spacing-lg) var(--spacing-md) var(--spacing-md);
    }
    
    /* Footer logo */
    .footer-logo img {
        width: 100px;
        height: 50px;
    }
    
    /* Info cards */
    .info-card {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-md);
    }
    
    .info-icon {
        align-self: center;
    }
}

/* Extra small screens (very small phones) */
@media (max-width: 360px) {
    /* Container further reduced */
    .container {
        padding: 0 var(--spacing-xs);
    }
    
    /* Further reduce text sizes */
    .hero-title {
        font-size: var(--text-xl);
    }
    
    .section-title {
        font-size: var(--text-lg);
    }
    
    /* Minimum spacing adjustments */
    .hero-section {
        padding: var(--spacing-xl) 0;
    }
    
    .features-section,
    .about-section,
    .services-section,
    .gallery-section,
    .testimonials-section,
    .contact-section {
        padding: var(--spacing-xl) 0;
    }
    
    /* Card further reduced */
    .feature-card,
    .service-content,
    .testimonial-card,
    .contact-form-container {
        padding: var(--spacing-sm);
    }
    
    /* Button full width */
    .btn-primary,
    .btn-secondary {
        width: 100%;
    }
    
    /* Logo smallest */
    .site-logo img {
        width: 70px;
        height: 35px;
    }
    
    /* Footer minimal */
    .footer-content {
        gap: var(--spacing-lg);
    }
}

/* ===================
   Print Styles
   =================== */

@media print {
    * {
        background: white !important;
        color: black !important;
        box-shadow: none !important;
    }
    
    .mobile-menu-toggle,
    .header-actions,
    .hero-actions,
    .social-links,
    .contact-form-container {
        display: none !important;
    }
    
    .site-header {
        position: static;
        box-shadow: none;
        border-bottom: 1px solid #ccc;
    }
    
    .hero-section::before {
        display: none;
    }
    
    .hero-content {
        color: black !important;
    }
    
    .hero-title,
    .hero-subtitle {
        color: black !important;
    }
    
    .container {
        max-width: none;
        padding: 0;
    }
    
    .section-title {
        page-break-after: avoid;
    }
    
    .feature-card,
    .service-card,
    .testimonial-card {
        page-break-inside: avoid;
        margin-bottom: 20px;
    }
    
    a::after {
        content: " (" attr(href) ")";
        font-size: 12px;
        color: #666;
    }
    
    .tel::after,
    .mailto::after {
        content: "";
    }
}

/* ===================
   High Contrast Mode
   =================== */

@media (prefers-contrast: high) {
    :root {
        --primary-color: #0000ff;
        --secondary-color: #000000;
        --accent-color: #ff0000;
        --background-primary: #ffffff;
        --background-secondary: #f0f0f0;
        --text-primary: #000000;
        --text-secondary: #000000;
        --text-light: #333333;
        --border-light: #000000;
        --border-medium: #000000;
        --border-dark: #000000;
    }
    
    .btn-primary {
        background-color: #0000ff;
        color: #ffffff;
        border: 2px solid #0000ff;
    }
    
    .btn-primary:hover {
        background-color: #ffffff;
        color: #0000ff;
    }
    
    .btn-secondary {
        background-color: #ffffff;
        color: #0000ff;
        border: 2px solid #0000ff;
    }
    
    .feature-card,
    .service-card,
    .testimonial-card {
        border: 2px solid #000000;
    }
}

/* ===================
   Reduced Motion
   =================== */

@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    
    .hero-section::before {
        background: rgba(37, 99, 235, 0.8);
    }
    
    .gallery-item:hover img {
        transform: none;
    }
    
    .service-card:hover .service-image img {
        transform: none;
    }
    
    .feature-card:hover,
    .service-card:hover,
    .testimonial-card:hover {
        transform: none;
    }
}

/* ===================
   Dark Mode Support
   =================== */

@media (prefers-color-scheme: dark) {
    :root {
        --background-primary: #1a1a1a;
        --background-secondary: #2d2d2d;
        --text-primary: #ffffff;
        --text-secondary: #e5e5e5;
        --text-light: #cccccc;
        --border-light: #404040;
        --border-medium: #606060;
        --border-dark: #808080;
    }
    
    .site-header {
        background-color: var(--background-primary);
    }
    
    .feature-card,
    .service-card,
    .testimonial-card,
    .contact-form-container {
        background-color: var(--background-primary);
        border: 1px solid var(--border-light);
    }
    
    .hero-section::before {
        background: linear-gradient(135deg, rgba(37, 99, 235, 0.9) 0%, rgba(15, 118, 110, 0.8) 100%);
    }
}

/* ===================
   Focus Improvements
   =================== */

@media (max-width: 768px) {
    /* Improve focus indicators for mobile */
    .menu-link:focus,
    .btn-primary:focus,
    .btn-secondary:focus,
    .form-input:focus,
    .form-textarea:focus {
        outline: 3px solid var(--primary-color);
        outline-offset: 2px;
    }
    
    /* Ensure touch targets are at least 44px */
    .menu-link,
    .btn-primary,
    .btn-secondary,
    .mobile-menu-toggle,
    .social-links a {
        min-height: 44px;
        min-width: 44px;
    }
}

/* ===================
   Invisalign Page Mobile Responsive
   =================== */

/* Large screens (desktops) */
@media (max-width: 1200px) {
    .invisalign-hero {
        padding: var(--spacing-3xl) 0 var(--spacing-xl);
    }
    
    .hero-title {
        font-size: var(--text-4xl);
    }
    
    .overview-content {
        gap: var(--spacing-2xl);
    }
    
    .consultation-content {
        gap: var(--spacing-2xl);
    }
}

/* Medium screens (tablets) */
@media (max-width: 768px) {
    /* Hero Section Mobile */
    .invisalign-hero {
        padding: var(--spacing-2xl) 0;
        text-align: center;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }
    
    .hero-title {
        font-size: var(--text-3xl);
    }
    
    .hero-description {
        max-width: 100%;
    }
    
    .hero-features {
        justify-content: center;
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .hero-badge {
        right: var(--spacing-md);
        top: var(--spacing-md);
        min-width: 60px;
        padding: var(--spacing-sm);
    }
    
    .badge-number {
        font-size: var(--text-lg);
    }
    
    /* Stats Section Mobile */
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
    }
    
    .stat-number {
        font-size: var(--text-3xl);
    }
    
    /* Section Titles Mobile */
    .section-title {
        font-size: var(--text-3xl);
    }
    
    /* Overview Section Mobile */
    .overview-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .benefits-grid {
        gap: var(--spacing-md);
    }
    
    .benefit-item {
        padding: var(--spacing-sm);
    }
    
    .benefit-icon {
        width: 32px;
        height: 32px;
    }
    
    .comparison-container {
        flex-direction: row;
        gap: var(--spacing-sm);
    }
    
    .comparison-item.featured {
        transform: none;
    }
    
    .vs-divider {
        writing-mode: vertical-lr;
        font-size: var(--text-base);
        padding: var(--spacing-xs);
    }
    
    /* Treatment Process Mobile */
    .step-card {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
        text-align: center;
        margin-bottom: var(--spacing-2xl);
    }
    
    .timeline-line {
        display: none;
    }
    
    .step-content {
        order: 2;
    }
    
    .step-image {
        order: 3;
    }
    
    .step-image img {
        height: 120px;
    }
    
    .step-features {
        justify-content: center;
    }
    
    /* Info Cards Mobile */
    .info-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .info-card {
        padding: var(--spacing-lg);
    }
    
    .info-icon {
        width: 48px;
        height: 48px;
    }
    
    .info-value {
        font-size: var(--text-2xl);
    }
    
    /* Gallery Mobile */
    .gallery-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .before-after-container {
        grid-template-columns: 1fr;
    }
    
    .before-image,
    .after-image {
        aspect-ratio: 16/9;
    }
    
    /* Consultation Form Mobile */
    .consultation-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .consultation-intro {
        text-align: center;
    }
    
    .consultation-form-container {
        padding: var(--spacing-lg);
    }
    
    .form-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .checkbox-group,
    .radio-group {
        gap: var(--spacing-xs);
    }
    
    /* FAQ Mobile */
    .faq-question {
        padding: var(--spacing-md);
        font-size: var(--text-base);
    }
    
    .faq-answer p {
        padding: 0 var(--spacing-md) var(--spacing-md);
    }
    
    /* Final CTA Mobile */
    .final-cta h2 {
        font-size: var(--text-3xl);
    }
    
    .final-cta p {
        font-size: var(--text-base);
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-md);
    }
    
    .contact-options {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
    
    .trust-indicators {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
}

/* Small screens (mobile) */
@media (max-width: 480px) {
    .hero-title {
        font-size: var(--text-2xl);
    }
    
    .hero-subtitle {
        font-size: var(--text-lg);
    }
    
    .section-title {
        font-size: var(--text-2xl);
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .benefits-grid {
        gap: var(--spacing-sm);
    }
    
    .step-card {
        margin-bottom: var(--spacing-xl);
    }
    
    .consultation-features {
        gap: var(--spacing-sm);
    }
    
    .btn-lg {
        padding: var(--spacing-sm) var(--spacing-lg);
        font-size: var(--text-base);
        min-height: 48px;
    }
    
    .final-cta h2 {
        font-size: var(--text-2xl);
    }
}

/* Animation delays for stagger effect */
.step-card:nth-child(1) {
    transition-delay: 0ms;
}

.step-card:nth-child(2) {
    transition-delay: 100ms;
}

.step-card:nth-child(3) {
    transition-delay: 200ms;
}

.step-card:nth-child(4) {
    transition-delay: 300ms;
}

.step-card:nth-child(5) {
    transition-delay: 400ms;
}

.step-card:nth-child(6) {
    transition-delay: 500ms;
}

.info-card:nth-child(1) {
    transition-delay: 0ms;
}

.info-card:nth-child(2) {
    transition-delay: 100ms;
}

.info-card:nth-child(3) {
    transition-delay: 200ms;
}

.info-card:nth-child(4) {
    transition-delay: 300ms;
}

.gallery-item:nth-child(1) {
    transition-delay: 0ms;
}

.gallery-item:nth-child(2) {
    transition-delay: 100ms;
}

.gallery-item:nth-child(3) {
    transition-delay: 200ms;
}

.faq-item:nth-child(1) {
    transition-delay: 0ms;
}

.faq-item:nth-child(2) {
    transition-delay: 50ms;
}

.faq-item:nth-child(3) {
    transition-delay: 100ms;
}

.faq-item:nth-child(4) {
    transition-delay: 150ms;
}

.faq-item:nth-child(5) {
    transition-delay: 200ms;
}