/* ===== ADVANCED MOBILE OPTIMIZATIONS ===== */

/* Enhanced CSS Variables for Mobile */
:root {
    /* Mobile-first spacing system */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    
    /* Responsive typography scale */
    --font-size-xs: 12px;
    --font-size-sm: 14px;
    --font-size-base: 16px;
    --font-size-lg: 18px;
    --font-size-xl: 20px;
    --font-size-2xl: 24px;
    --font-size-3xl: 28px;
    
    /* Enhanced color system */
    --primary-color: #25d366;
    --primary-dark: #1da851;
    --primary-light: #dcfce7;
    --text-color: #1f2937;
    --text-muted: #6b7280;
    --border-color: #e5e7eb;
    --background-light: #f9fafb;
    
    /* Border radius system */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    /* Enhanced shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.1);
}

/* ===== VIEWPORT AND BASE MOBILE STYLES ===== */
@viewport {
    width: device-width;
    initial-scale: 1.0;
    maximum-scale: 1.0;
    user-scalable: no;
}

/* Prevent horizontal scrolling on mobile */
html, body {
    overflow-x: hidden;
    width: 100%;
}

/* ===== TOUCH AND GESTURE OPTIMIZATIONS ===== */
@media (max-width: 768px) {
    /* Better touch targets */
    * {
        -webkit-tap-highlight-color: rgba(0, 0, 0, 0.1);
        -webkit-touch-callout: none;
    }
    
    /* Smooth scrolling for mobile */
    html {
        scroll-behavior: smooth;
        -webkit-overflow-scrolling: touch;
    }
    
    /* Prevent text selection on UI elements */
    .nav-link,
    .city-btn,
    .method-btn,
    .header-btn,
    .mobile-nav-toggle {
        -webkit-user-select: none;
        -moz-user-select: none;
        -ms-user-select: none;
        user-select: none;
    }
    
    /* Better button press feedback */
    .nav-link:active,
    .city-btn:active,
    .method-btn:active,
    .header-btn:active {
        background-color: rgba(0, 0, 0, 0.05);
        transform: scale(0.98);
        transition: all 0.1s ease;
    }
    
    /* Improved focus states for mobile */
    .nav-link:focus,
    .city-btn:focus,
    .method-btn:focus {
        outline: 2px solid var(--primary-color);
        outline-offset: 2px;
        border-radius: var(--radius-sm);
    }
}

/* ===== MOBILE NAVIGATION ADVANCED STYLES ===== */
@media (max-width: 768px) {
    /* Mobile navigation toggle button */
    .mobile-nav-toggle {
        display: block !important;
        background: var(--primary-color);
        color: white;
        border: none;
        padding: var(--spacing-sm);
        border-radius: var(--radius-sm);
        font-size: var(--font-size-lg);
        cursor: pointer;
        min-width: 44px;
        min-height: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
        transition: all 0.2s ease;
        z-index: 1001;
    }
    
    .mobile-nav-toggle:active {
        transform: scale(0.95);
        background: var(--primary-dark, #2563eb);
    }
    
    /* Mobile navigation menu */
    .main-nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        max-width: 85vw;
        height: 100vh;
        background: white;
        z-index: 1000;
        transition: right 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        overflow-y: auto;
        box-shadow: -5px 0 15px rgba(0, 0, 0, 0.2);
        padding-top: 60px;
    }
    
    .main-nav.active {
        right: 0;
    }
    
    .nav-list {
        flex-direction: column;
        padding: var(--spacing-md);
        margin: 0;
        width: 100%;
        background: transparent;
        box-shadow: none;
        border-radius: 0;
        transform: none;
        opacity: 1;
        display: flex !important;
        list-style: none;
    }
    
    .nav-list.active {
        display: flex !important;
    }
    
    .nav-list li {
        width: 100%;
        margin-bottom: var(--spacing-sm);
    }
    
    .nav-link {
        padding: var(--spacing-md);
        border-radius: var(--radius-md);
        border: 1px solid var(--border-color);
        background: var(--surface-color);
        transition: all 0.2s ease;
        text-align: right;
        display: block;
        width: 100%;
        text-decoration: none;
        color: var(--text-color);
        font-size: var(--font-size-base);
    }
    
    .nav-link:hover,
    .nav-link.active {
        background: var(--primary-color);
        color: white;
        border-color: var(--primary-color);
    }
    
    /* Mobile dropdown improvements */
    .nav-dropdown {
        position: relative;
    }
    
    .nav-dropdown .dropdown-menu {
        position: static !important;
        display: none;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        background: rgba(0, 0, 0, 0.05);
        border-radius: var(--radius-sm);
        margin: var(--spacing-xs) 0 0 0;
        padding: var(--spacing-xs);
        width: 100%;
        border: none;
    }
    
    .nav-dropdown.active .dropdown-menu {
        display: block !important;
        animation: slideDown 0.3s ease;
    }
    
    @keyframes slideDown {
        from {
            opacity: 0;
            transform: translateY(-10px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }
    
    .dropdown-menu li {
        margin-bottom: var(--spacing-xs);
        width: 100%;
    }
    
    .dropdown-menu a {
        padding: var(--spacing-sm);
        font-size: var(--font-size-sm);
        border-radius: var(--radius-sm);
        background: white;
        border: 1px solid var(--border-color);
        display: block;
        width: 100%;
        text-align: right;
        color: var(--text-color);
        text-decoration: none;
        transition: all 0.2s ease;
    }
    
    .dropdown-menu a:hover,
    .dropdown-menu a:active {
        background: var(--primary-color);
        color: white;
        border-color: var(--primary-color);
    }
    
    /* Hide desktop navigation on mobile */
    .main-nav:not(.active) {
        display: none;
    }
}

/* ===== MOBILE HEADER OPTIMIZATIONS ===== */
@media (max-width: 768px) {
    .site-header {
        position: sticky;
        top: 0;
        z-index: 1000;
        background: white;
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        padding: var(--spacing-sm) 0;
    }
    
    .header-content {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: var(--spacing-sm);
        position: relative;
    }
    
    .logo {
        flex: 1;
        display: flex;
        align-items: center;
        gap: var(--spacing-xs);
    }
    
    .logo-img {
        width: 40px;
        height: 40px;
        flex-shrink: 0;
    }
    
    .logo-text {
        flex: 1;
        min-width: 0;
    }
    
    .site-title {
        font-size: var(--font-size-lg);
        margin: 0;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    
    .site-tagline {
        font-size: var(--font-size-sm);
        margin: 0;
        display: none; /* Hide on mobile to save space */
    }
    
    .header-contact {
        display: flex;
        align-items: center;
        gap: var(--spacing-xs);
        flex-shrink: 0;
    }
    
    .header-btn {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: var(--font-size-sm);
        white-space: nowrap;
    }
    
    .contact-info {
        display: none; /* Hide on mobile */
    }
    
    .mobile-nav-toggle {
        background: var(--primary-color);
        color: white;
        border: none;
        padding: var(--spacing-sm);
        border-radius: var(--radius-sm);
        cursor: pointer;
        min-width: 44px;
        min-height: 44px;
        display: flex !important;
        align-items: center;
        justify-content: center;
        transition: all 0.2s ease;
        flex-shrink: 0;
    }
    
    .mobile-nav-toggle:active {
        transform: scale(0.95);
        background: var(--primary-dark, #2563eb);
    }
}

/* ===== MOBILE CONTENT OPTIMIZATIONS ===== */
@media (max-width: 768px) {
    /* Hero section mobile optimization */
    .hero-section {
        padding: var(--spacing-lg) 0;
        text-align: center;
        background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    }
    
    .hero-content {
        max-width: 100%;
        padding: 0 var(--spacing-md);
    }
    
    .hero-title {
        font-size: clamp(24px, 6vw, 32px);
        line-height: 1.2;
        margin-bottom: var(--spacing-md);
        text-align: center;
    }
    
    .highlight {
        display: block;
        font-size: clamp(18px, 5vw, 24px);
        color: var(--primary-color);
        margin-top: var(--spacing-xs);
    }
    
    .hero-description {
        font-size: var(--font-size-base);
        line-height: 1.6;
        margin-bottom: var(--spacing-lg);
        text-align: center;
        max-width: 90%;
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-features {
        display: flex;
        flex-direction: column;
        gap: var(--spacing-sm);
        margin-bottom: var(--spacing-lg);
        align-items: center;
    }
    
    .feature {
        display: flex;
        align-items: center;
        gap: var(--spacing-sm);
        font-size: var(--font-size-sm);
        padding: var(--spacing-xs) var(--spacing-sm);
        background: white;
        border-radius: var(--radius-md);
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
        min-width: 120px;
        justify-content: center;
    }
    
    .feature i {
        font-size: 16px;
        color: var(--primary-color);
    }
    
    .cta-btn {
        padding: var(--spacing-md) var(--spacing-lg);
        font-size: var(--font-size-base);
        width: 100%;
        max-width: 320px;
        margin: 0 auto;
        display: block;
        border-radius: var(--radius-lg);
        box-shadow: 0 4px 15px rgba(37, 211, 102, 0.3);
        transition: all 0.3s ease;
    }
    
    .cta-btn:active {
        transform: scale(0.98);
    }
    
    /* Cities section mobile */
    .cities-section {
        padding: var(--spacing-lg) 0;
    }
    
    .section-title {
        font-size: clamp(20px, 5vw, 28px);
        line-height: 1.3;
        text-align: center;
        margin-bottom: var(--spacing-sm);
    }
    
    .section-subtitle {
        font-size: var(--font-size-base);
        line-height: 1.5;
        text-align: center;
        margin-bottom: var(--spacing-lg);
        color: var(--text-muted);
    }
    
    .cities-grid {
        display: grid;
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
        padding: 0 var(--spacing-md);
    }
    
    .city-card {
        padding: var(--spacing-lg);
        text-align: center;
        border-radius: var(--radius-lg);
        background: white;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
        transition: all 0.3s ease;
        border: 1px solid var(--border-color);
    }
    
    .city-card:active {
        transform: scale(0.98);
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    }
    
    .city-icon {
        font-size: 36px;
        margin-bottom: var(--spacing-sm);
        display: block;
    }
    
    .city-name {
        font-size: var(--font-size-xl);
        margin-bottom: var(--spacing-xs);
        color: var(--primary-color);
    }
    
    .city-service {
        font-size: var(--font-size-sm);
        margin-bottom: var(--spacing-md);
        color: var(--text-muted);
    }
    
    .city-features {
        list-style: none;
        padding: 0;
        margin: 0 0 var(--spacing-md) 0;
    }
    
    .city-features li {
        font-size: var(--font-size-sm);
        padding: var(--spacing-xs) 0;
        color: var(--text-color);
    }
    
    .city-btn {
        padding: var(--spacing-sm) var(--spacing-lg);
        font-size: var(--font-size-base);
        width: 100%;
        border-radius: var(--radius-md);
        background: var(--primary-color);
        color: white;
        border: none;
        text-decoration: none;
        display: inline-block;
        text-align: center;
        transition: all 0.3s ease;
    }
    
    .city-btn:hover,
    .city-btn:active {
        background: var(--primary-dark, #2563eb);
        transform: translateY(-1px);
    }
    
    /* Better spacing for mobile */
    .section {
        padding: var(--spacing-lg) 0;
    }
    
    .container {
        padding: 0 var(--spacing-md);
        max-width: 100%;
    }
    
    /* Medical information section mobile */
    .medical-info {
        background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
        padding: var(--spacing-xl) 0;
        margin: var(--spacing-lg) 0;
    }
    
    .info-grid {
        display: grid;
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
        padding: 0 var(--spacing-md);
    }
    
    .info-card {
        background: white;
        padding: var(--spacing-lg);
        border-radius: var(--radius-lg);
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
        border: 1px solid var(--border-color);
        text-align: center;
        transition: all 0.3s ease;
    }
    
    .info-card:active {
        transform: scale(0.98);
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    }
    
    .info-icon {
        font-size: 48px;
        margin-bottom: var(--spacing-md);
        color: var(--primary-color);
        display: block;
    }
    
    .info-title {
        font-size: var(--font-size-lg);
        margin-bottom: var(--spacing-sm);
        color: var(--text-color);
        font-weight: 600;
    }
    
    .info-description {
        font-size: var(--font-size-base);
        line-height: 1.6;
        color: var(--text-muted);
        margin-bottom: var(--spacing-md);
    }
    
    .info-list {
        list-style: none;
        padding: 0;
        margin: 0;
        text-align: right;
    }
    
    .info-list li {
        padding: var(--spacing-xs) 0;
        font-size: var(--font-size-sm);
        color: var(--text-color);
        border-bottom: 1px solid var(--border-color);
    }
    
    .info-list li:last-child {
        border-bottom: none;
    }
    
    .info-list li::before {
        content: "✓";
        color: var(--primary-color);
        font-weight: bold;
        margin-left: var(--spacing-xs);
    }
    
    /* Contact section mobile */
    .contact-section {
        background: var(--primary-color);
        color: white;
        padding: var(--spacing-xl) 0;
        text-align: center;
    }
    
    .contact-content {
        padding: 0 var(--spacing-md);
    }
    
    .contact-title {
        font-size: clamp(20px, 5vw, 28px);
        margin-bottom: var(--spacing-sm);
    }
    
    .contact-subtitle {
        font-size: var(--font-size-base);
        opacity: 0.9;
        margin-bottom: var(--spacing-lg);
        line-height: 1.6;
    }
    
    .contact-methods {
        display: flex;
        flex-direction: column;
        gap: var(--spacing-md);
        margin-bottom: var(--spacing-lg);
    }
    
    .contact-method {
        background: rgba(255, 255, 255, 0.1);
        padding: var(--spacing-md);
        border-radius: var(--radius-md);
        border: 1px solid rgba(255, 255, 255, 0.2);
        transition: all 0.3s ease;
    }
    
    .contact-method:active {
        background: rgba(255, 255, 255, 0.2);
        transform: scale(0.98);
    }
    
    .contact-icon {
        font-size: 24px;
        margin-bottom: var(--spacing-xs);
        display: block;
    }
    
    .contact-label {
        font-size: var(--font-size-sm);
        opacity: 0.8;
        margin-bottom: var(--spacing-xs);
    }
    
    .contact-value {
        font-size: var(--font-size-lg);
        font-weight: 600;
        color: white;
        text-decoration: none;
    }
    
    /* Form improvements */
    input[type="text"],
    input[type="email"],
    input[type="tel"],
    textarea {
        font-size: 16px; /* Prevent zoom on iOS */
        padding: var(--spacing-md);
        border: 2px solid var(--border-color);
        border-radius: var(--radius-md);
        transition: border-color 0.2s ease;
        width: 100%;
        box-sizing: border-box;
        background: white;
    }
    
    input:focus,
    textarea:focus {
        border-color: var(--primary-color);
        outline: none;
        box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
    }
    
    .btn-submit {
        width: 100%;
        padding: var(--spacing-md) var(--spacing-lg);
        font-size: var(--font-size-base);
        background: var(--primary-color);
        color: white;
        border: none;
        border-radius: var(--radius-md);
        cursor: pointer;
        transition: all 0.3s ease;
    }
    
    .btn-submit:active {
        background: var(--primary-dark, #2563eb);
        transform: scale(0.98);
    }
}

/* ===== MOBILE FOOTER OPTIMIZATIONS ===== */
@media (max-width: 768px) {
    .site-footer {
        background: var(--dark-bg, #1f2937);
        color: white;
    }
    
    .quick-nav-footer {
        margin-bottom: var(--spacing-lg);
        text-align: center;
    }
    
    .quick-nav-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
        gap: var(--spacing-xs);
        margin-top: var(--spacing-md);
    }
    
    .quick-nav-item {
        padding: var(--spacing-sm);
        background: rgba(255, 255, 255, 0.1);
        border: 1px solid rgba(255, 255, 255, 0.2);
        border-radius: var(--radius-sm);
        color: white;
        text-decoration: none;
        font-size: var(--font-size-sm);
        transition: all 0.2s ease;
    }
    
    .quick-nav-item:hover,
    .quick-nav-item:active {
        background: rgba(255, 255, 255, 0.2);
        transform: translateY(-1px);
    }
}

/* ===== MOBILE ACCESSIBILITY IMPROVEMENTS ===== */
@media (max-width: 768px) {
    /* Better contrast for mobile */
    .nav-link,
    .city-btn,
    .method-btn {
        color: var(--text-color);
        background: white;
        border: 2px solid var(--border-color);
    }
    
    .nav-link:hover,
    .nav-link:focus,
    .nav-link.active {
        background: var(--primary-color);
        color: white;
        border-color: var(--primary-color);
    }
    
    /* Skip navigation for accessibility */
    .skip-nav {
        position: absolute;
        top: -100px;
        left: var(--spacing-md);
        background: var(--primary-color);
        color: white;
        padding: var(--spacing-sm) var(--spacing-md);
        text-decoration: none;
        border-radius: var(--radius-sm);
        z-index: 1001;
        transition: top 0.3s ease;
    }
    
    .skip-nav:focus {
        top: var(--spacing-md);
    }
    
    /* Better focus indicators */
    *:focus {
        outline: 2px solid var(--primary-color);
        outline-offset: 2px;
    }
    
    button:focus,
    a:focus {
        outline-style: solid;
    }
}

/* ===== MOBILE PERFORMANCE OPTIMIZATIONS ===== */
@media (max-width: 768px) {
    /* Optimize animations for mobile */
    * {
        will-change: auto;
    }
    
    .nav-list,
    .mobile-nav-toggle,
    .whatsapp-float a {
        will-change: transform;
    }
    
    /* Reduce motion for users who prefer it */
    @media (prefers-reduced-motion: reduce) {
        *,
        *::before,
        *::after {
            animation-duration: 0.01ms !important;
            animation-iteration-count: 1 !important;
            transition-duration: 0.01ms !important;
        }
    }
    
    /* Optimize images for mobile */
    img {
        max-width: 100%;
        height: auto;
        display: block;
    }
    
    /* Lazy loading optimization */
    img[loading="lazy"] {
        opacity: 0;
        transition: opacity 0.3s ease;
    }
    
    img[loading="lazy"].loaded {
        opacity: 1;
    }
    
    /* Enhanced interactive elements */
    .interactive-element {
        touch-action: manipulation;
        -webkit-tap-highlight-color: transparent;
    }
    
    /* Better focus states for accessibility */
    button:focus,
    a:focus,
    input:focus,
    textarea:focus {
        outline: 2px solid var(--primary-color);
        outline-offset: 2px;
    }
    
    /* Enhanced animations for mobile */
    @media (prefers-reduced-motion: reduce) {
        * {
            animation-duration: 0.01ms !important;
            animation-iteration-count: 1 !important;
            transition-duration: 0.01ms !important;
        }
    }
    
    /* Improved scrollbar for mobile webkit */
    ::-webkit-scrollbar {
        width: 4px;
    }
    
    ::-webkit-scrollbar-track {
        background: var(--background-light);
    }
    
    ::-webkit-scrollbar-thumb {
        background: var(--border-color);
        border-radius: var(--radius-sm);
    }
    
    ::-webkit-scrollbar-thumb:hover {
        background: var(--text-muted);
    }
}

/* ===== ADDITIONAL MOBILE OPTIMIZATIONS ===== */

/* Better touch targets */
@media (max-width: 768px) {
    .touch-target {
        min-height: 44px;
        min-width: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    /* Enhanced mobile navigation */
    .mobile-nav-enhanced {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 9999;
        background: white;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-md);
        transition: transform 0.3s ease;
    }
    
    .mobile-nav-enhanced.hidden {
        transform: translateY(-100%);
    }
    
    /* Improved dropdown positioning */
    .nav-dropdown .dropdown-menu {
        max-height: 70vh;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    /* Better form validation */
    .form-field.error input,
    .form-field.error textarea {
        border-color: #ef4444;
        box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
    }
    
    .form-field.success input,
    .form-field.success textarea {
        border-color: var(--primary-color);
        box-shadow: 0 0 0 3px rgba(37, 211, 102, 0.1);
    }
    
    .error-message {
        color: #ef4444;
        font-size: var(--font-size-sm);
        margin-top: var(--spacing-xs);
        display: block;
    }
    
    .success-message {
        color: var(--primary-color);
        font-size: var(--font-size-sm);
        margin-top: var(--spacing-xs);
        display: block;
    }
}