/*!
 * V5 Medical LTD Core Style Sheet
 * @version 2.0.0
 * @author V5 Medical Development Team
 * @description Optimized custom styles complementing Tailwind CSS
 */

/* ============================================
   1. DESIGN TOKENS (CSS Variables)
   ============================================ */
:root {
    /* Brand Colors */
    --color-primary: #1e40af;
    --color-primary-dark: #1e3a8a;
    --color-primary-light: #3b82f6;
    --color-secondary: #10b981;
    --color-secondary-dark: #059669;
    
    /* Status Colors */
    --color-danger: #ef4444;
    --color-warning: #f59e0b;
    --color-info: #3b82f6;
    
    /* Neutrals */
    --color-white: #ffffff;
    --color-gray-50: #f8fafc;
    --color-gray-100: #f1f5f9;
    --color-gray-800: #1e293b;
    --color-gray-900: #0f172a;
    
    /* Dimensions */
    --navbar-height: 80px;
    --radius-md: 0.5rem;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-base: 300ms ease;
    
    /* Z-Index Layers */
    --z-dropdown: 50;
    --z-sticky: 100;
    --z-fixed: 1000;
    --z-modal: 5000;
    --z-loader: 9999;
}

/* Dark Mode Support via Variables */
@media (prefers-color-scheme: dark) {
    :root {
        --color-white: #0f172a;
        --color-gray-50: #1e293b;
        --color-gray-800: #f1f5f9;
        --color-gray-900: #f8fafc;
    }
}

/* ============================================
   2. GLOBAL RESETS & BASE
   ============================================ */
html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--navbar-height);
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

/* Hardware Acceleration Class */
.gpu-accelerate {
    transform: translateZ(0);
    will-change: transform, opacity;
}

/* ============================================
   3. CUSTOM COMPONENTS
   ============================================ */

/* --- Page Loader --- */
.page-loader {
    position: fixed;
    inset: 0;
    background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: var(--z-loader);
    transition: opacity var(--transition-base), visibility var(--transition-base);
}

.page-loader.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.loader-spinner {
    width: 48px;
    height: 48px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top-color: #ffffff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* --- Navigation --- */
.nav-scrolled {
    background-color: rgba(255, 255, 255, 0.95) !important;
    backdrop-filter: blur(8px);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

/* --- Floating Actions (WhatsApp & BackToTop) --- */
.whatsapp-float, .back-to-top {
    position: fixed;
    right: 1.5rem;
    z-index: var(--z-fixed);
    border-radius: var(--radius-full);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

.whatsapp-float {
    bottom: 1.5rem;
    width: 3.5rem;
    height: 3.5rem;
    background-color: var(--color-secondary);
    color: white;
}

.whatsapp-float:hover {
    background-color: var(--color-secondary-dark);
    transform: scale(1.1) rotate(-5deg);
}

.back-to-top {
    bottom: 6rem;
    width: 3rem;
    height: 3rem;
    background-color: var(--color-primary);
    color: white;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background-color: var(--color-primary-dark);
    transform: translateY(-3px);
}

/* --- Google Translate Customization --- */
.goog-te-gadget-simple {
    background-color: rgba(30, 64, 175, 0.9) !important;
    border: none !important;
    padding: 6px 12px !important;
    border-radius: 20px !important;
    font-size: 13px !important;
    font-weight: 600 !important;
    color: white !important;
    transition: background-color 0.2s;
}

.goog-te-gadget-simple:hover {
    background-color: var(--color-primary-dark) !important;
}

.goog-te-gadget-simple img { display: none !important; }
.goog-te-gadget-simple span { color: white !important; }

/* --- Toast Notification --- */
.notification {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: var(--z-modal);
    padding: 1rem 1.5rem;
    border-radius: var(--radius-md);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    color: white;
    transform: translateX(120%);
    transition: transform 0.3s cubic-bezier(0.68, -0.55, 0.27, 1.55);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    max-width: 90vw;
}

.notification.active { transform: translateX(0); }
.notification.success { background-color: var(--color-secondary); }
.notification.error { background-color: var(--color-danger); }
.notification.info { background-color: var(--color-info); }

/* --- Card Hover Effects --- */
.card-hover {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card-hover:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

/* ============================================
   4. PRINT STYLES
   ============================================ */
@media print {
    .no-print, 
    nav, 
    footer, 
    .whatsapp-float, 
    .back-to-top, 
    .page-loader,
    #google_translate_element {
        display: none !important;
    }

    body {
        font-size: 12pt;
        background: white;
        color: black;
    }

    a[href]:after {
        content: " (" attr(href) ")";
        font-size: 0.8em;
        color: #666;
    }
    
    a[href^="#"]:after,
    a[href^="javascript"]:after {
        content: "";
    }
}

/* ============================================
   5. ACCESSIBILITY
   ============================================ */
@media (prefers-reduced-motion: reduce) {
    *, ::before, ::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* ==========================================================================
   V5 Medical Mobile Experience & Accessibility Enhancements (Validated)
   ========================================================================== */

/* --- 1. Mobile Specific Optimizations (Max Width: 768px) --- */
@media (max-width: 768px) {
    
    /* 1.1 Enhanced Text Readability for Hero Section */
    .hero-text-shadow {
        text-shadow: 
            0 2px 4px rgba(0, 0, 0, 0.7),
            0 1px 2px rgba(0, 0, 0, 0.5);
    }
    
    /* Stronger gradient overlay for better text contrast */
    .hero-gradient-overlay {
        background: linear-gradient(
            to bottom,
            rgba(0, 0, 0, 0.3) 0%,
            rgba(0, 0, 0, 0.1) 40%,
            rgba(0, 0, 0, 0.2) 70%,
            rgba(0, 0, 0, 0.5) 100%
        );
    }
    
    /* 1.2 Touch Target Size (Minimum 48x48px rule) */
    button, 
    .btn, 
    .nav-link, 
    a.inline-block,
    input[type="submit"] {
        min-height: 48px;
        min-width: 48px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }

    /* 1.3 Form Input Optimization (Prevent iOS Zoom) */
    input[type="text"],
    input[type="email"],
    input[type="tel"],
    input[type="number"],
    textarea,
    select {
        font-size: 16px !important; /* Critical for iOS */
        padding: 12px 16px !important;
        border-radius: 8px;
        min-height: 48px;
    }

    /* 1.4 Active State Feedback (Press Effect) */
    .blog-card:active,
    .product-card:active,
    a.bg-blue-600:active,
    a.bg-green-500:active,
    button:active {
        transform: scale(0.96);
        transition: transform 0.1s ease;
        opacity: 0.9;
    }

    /* 1.5 Navigation Menu Touch Area */
    #mobile-menu a {
        padding: 16px 24px !important;
        font-size: 16px;
        display: block;
    }

    /* 1.6 Safe Area for Floating Buttons (Avoid overlapping iPhone Home Bar) */
    .fixed.bottom-6 {
        bottom: max(24px, env(safe-area-inset-bottom) + 24px) !important;
    }
    
    /* 1.7 Prevent Horizontal Overflow */
    body {
        overflow-x: hidden;
        width: 100%;
    }
}

/* --- 2. Universal Touch Improvements --- */
@media (hover: none) and (pointer: coarse) {
    /* Remove hover effects on touch devices to prevent "sticky hover" */
    .group:hover .group-hover\:scale-110 {
        transform: none;
    }
    
    /* Add tap highlight color */
    a, button, input, select, textarea {
        -webkit-tap-highlight-color: rgba(30, 64, 175, 0.1); /* Primary blue tint */
    }
}

/* --- 3. Accessibility (A11y) --- */
*:focus-visible {
    outline: 3px solid #3b82f6; /* Visible focus ring */
    outline-offset: 2px;
}

/* Screen Reader Only Class */
.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;
}