/* ══════════════════════════════════════════════════════════════
   RESPONSIVE GLOBAL SYSTEM - Néré Mining
   Adaptation automatique pour tous les écrans (320px → 4K)
   ══════════════════════════════════════════════════════════════ */

/* ── Variables Responsive ──────────────────────────────────── */
:root {
    /* Spacing Scale */
    --space-xs: clamp(0.5rem, 1vw, 0.75rem);
    --space-sm: clamp(0.75rem, 1.5vw, 1rem);
    --space-md: clamp(1rem, 2vw, 1.5rem);
    --space-lg: clamp(1.5rem, 3vw, 2.5rem);
    --space-xl: clamp(2rem, 4vw, 4rem);
    --space-2xl: clamp(3rem, 6vw, 6rem);
    
    /* Container Widths */
    --container-sm: 640px;
    --container-md: 768px;
    --container-lg: 1024px;
    --container-xl: 1280px;
    --container-2xl: 1536px;
    
    /* Fluid Typography */
    --text-xs: clamp(0.75rem, 0.8vw, 0.875rem);
    --text-sm: clamp(0.875rem, 0.9vw, 1rem);
    --text-base: clamp(1rem, 1.1vw, 1.125rem);
    --text-lg: clamp(1.125rem, 1.3vw, 1.25rem);
    --text-xl: clamp(1.25rem, 1.5vw, 1.5rem);
    --text-2xl: clamp(1.5rem, 2vw, 2rem);
    --text-3xl: clamp(2rem, 2.5vw, 3rem);
    --text-4xl: clamp(2.5rem, 3vw, 4rem);
    --text-5xl: clamp(3rem, 4vw, 5rem);
}

/* ── Global Container System ───────────────────────────────── */
.container-responsive {
    width: 100%;
    max-width: var(--container-2xl);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--space-md);
    padding-right: var(--space-md);
}

@media (min-width: 640px) {
    .container-responsive { max-width: var(--container-sm); }
}

@media (min-width: 768px) {
    .container-responsive { max-width: var(--container-md); }
}

@media (min-width: 1024px) {
    .container-responsive { 
        max-width: var(--container-lg);
        padding-left: var(--space-lg);
        padding-right: var(--space-lg);
    }
}

@media (min-width: 1280px) {
    .container-responsive { max-width: var(--container-xl); }
}

@media (min-width: 1536px) {
    .container-responsive { 
        max-width: var(--container-2xl);
        padding-left: var(--space-xl);
        padding-right: var(--space-xl);
    }
}

/* Ultra-wide (2K+) */
@media (min-width: 1920px) {
    .container-responsive {
        max-width: 1800px;
    }
}

/* 4K Screens */
@media (min-width: 2560px) {
    .container-responsive {
        max-width: 2200px;
        padding-left: var(--space-2xl);
        padding-right: var(--space-2xl);
    }
}

/* ── Fluid Grid System ─────────────────────────────────────── */
.grid-responsive {
    display: grid;
    gap: var(--space-md);
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr));
}

/* 2 columns min on tablet+ */
@media (min-width: 768px) {
    .grid-responsive-2 {
        grid-template-columns: repeat(auto-fit, minmax(min(100%, 350px), 1fr));
    }
}

/* 3 columns min on desktop+ */
@media (min-width: 1024px) {
    .grid-responsive-3 {
        grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr));
    }
}

/* 4 columns on large screens */
@media (min-width: 1280px) {
    .grid-responsive-4 {
        grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr));
    }
}

/* ── Responsive Images ──────────────────────────────────────── */
img, picture, video, canvas, svg {
    display: block;
    max-width: 100%;
    height: auto;
}

.img-responsive {
    width: 100%;
    height: auto;
    object-fit: cover;
}

/* ── Responsive Typography ──────────────────────────────────── */
.text-responsive-xs { font-size: var(--text-xs); }
.text-responsive-sm { font-size: var(--text-sm); }
.text-responsive-base { font-size: var(--text-base); }
.text-responsive-lg { font-size: var(--text-lg); }
.text-responsive-xl { font-size: var(--text-xl); }
.text-responsive-2xl { font-size: var(--text-2xl); }
.text-responsive-3xl { font-size: var(--text-3xl); }
.text-responsive-4xl { font-size: var(--text-4xl); }
.text-responsive-5xl { font-size: var(--text-5xl); }

/* ── Responsive Spacing ─────────────────────────────────────── */
.space-y-responsive > * + * {
    margin-top: var(--space-md);
}

.space-x-responsive > * + * {
    margin-left: var(--space-md);
}

/* ── Breakpoint Utilities ───────────────────────────────────── */
/* Hide/Show based on screen size */
.hide-mobile { display: none; }
@media (min-width: 768px) {
    .hide-mobile { display: block; }
    .show-mobile-only { display: none; }
}

.hide-tablet { display: block; }
@media (min-width: 768px) and (max-width: 1023px) {
    .hide-tablet { display: none; }
}

.hide-desktop { display: block; }
@media (min-width: 1024px) {
    .hide-desktop { display: none; }
}

/* ── Responsive Navigation Fix ──────────────────────────────── */
@media (max-width: 991px) {
    /* Ensure mobile menu is accessible */
    .navbar-collapse {
        max-height: calc(100vh - 80px);
        overflow-y: auto;
    }
}

/* ── Responsive Cards ───────────────────────────────────────── */
.card-responsive {
    padding: var(--space-md);
    border-radius: clamp(8px, 1vw, 16px);
}

@media (min-width: 768px) {
    .card-responsive {
        padding: var(--space-lg);
    }
}

@media (min-width: 1280px) {
    .card-responsive {
        padding: var(--space-xl);
    }
}

/* ── Responsive Buttons ─────────────────────────────────────── */
.btn-responsive {
    padding: var(--space-sm) var(--space-md);
    font-size: var(--text-base);
    min-height: 44px; /* Touch-friendly */
}

@media (min-width: 768px) {
    .btn-responsive {
        padding: var(--space-md) var(--space-lg);
        font-size: var(--text-lg);
    }
}

/* ── Responsive Hero Sections ───────────────────────────────── */
.hero-responsive {
    padding-top: var(--space-xl);
    padding-bottom: var(--space-xl);
    min-height: clamp(400px, 60vh, 700px);
}

@media (min-width: 1024px) {
    .hero-responsive {
        padding-top: var(--space-2xl);
        padding-bottom: var(--space-2xl);
        min-height: clamp(500px, 70vh, 900px);
    }
}

@media (min-width: 1920px) {
    .hero-responsive {
        min-height: clamp(600px, 60vh, 1000px);
    }
}

/* ── Aspect Ratio Utilities ─────────────────────────────────── */
.aspect-16-9 { aspect-ratio: 16 / 9; }
.aspect-4-3 { aspect-ratio: 4 / 3; }
.aspect-1-1 { aspect-ratio: 1 / 1; }
.aspect-21-9 { aspect-ratio: 21 / 9; }

/* ── Safe Areas (notch support) ─────────────────────────────── */
.safe-top {
    padding-top: max(var(--space-md), env(safe-area-inset-top));
}

.safe-bottom {
    padding-bottom: max(var(--space-md), env(safe-area-inset-bottom));
}

.safe-left {
    padding-left: max(var(--space-md), env(safe-area-inset-left));
}

.safe-right {
    padding-right: max(var(--space-md), env(safe-area-inset-right));
}

/* ── Print Styles ───────────────────────────────────────────── */
@media print {
    .no-print { display: none !important; }
    
    body {
        font-size: 12pt;
        line-height: 1.5;
        color: #000;
        background: #fff;
    }
    
    a {
        text-decoration: underline;
        color: #000;
    }
    
    a[href^="http"]::after {
        content: " (" attr(href) ")";
        font-size: 0.8em;
    }
}

/* ── Accessibility Enhancements ─────────────────────────────── */
/* Larger touch targets on mobile */
@media (max-width: 768px) {
    a, button, input, select, textarea {
        min-height: 44px;
        min-width: 44px;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) and (min-width: 99999px) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    * {
        border-color: currentColor !important;
    }
}

/* ── Performance Optimizations ──────────────────────────────── */
/* Will-change for animated elements */
.animate-optimized {
    will-change: transform, opacity;
}

/* GPU acceleration */
.gpu-accelerated {
    transform: translateZ(0);
    backface-visibility: hidden;
}

/* ── Layout Shifts Prevention ───────────────────────────────── */
/* Reserve space for images */
.img-placeholder {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: shimmerLoading 1.5s infinite;
}

@keyframes shimmerLoading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ── Orientation Support ────────────────────────────────────── */
@media (orientation: landscape) and (max-height: 500px) {
    /* Optimize for landscape mobile */
    .hero-responsive {
        min-height: 90vh;
    }
    
    .navbar {
        padding-top: 0.5rem;
        padding-bottom: 0.5rem;
    }
}

/* ── Dark Mode Support (if needed) ──────────────────────────── */
@media (prefers-color-scheme: dark) {
    .auto-dark-mode {
        background-color: #1a1a1a;
        color: #ffffff;
    }
}

/* ── Edge Cases ─────────────────────────────────────────────── */
/* Very small screens (< 320px) */
@media (max-width: 319px) {
    :root {
        font-size: 14px;
    }
    
    .container-responsive {
        padding-left: 0.75rem;
        padding-right: 0.75rem;
    }
}

/* Ultra-wide monitors (> 2560px) */
@media (min-width: 3440px) {
    .container-responsive {
        max-width: 2800px;
    }
    
    body {
        font-size: 18px;
    }
}

/* ── Smooth Scrolling ───────────────────────────────────────── */
html {
    scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) and (min-width: 99999px) {
    html {
        scroll-behavior: auto;
    }
}

/* ── Focus Visible (keyboard navigation) ────────────────────── */
:focus-visible {
    outline: 3px solid var(--gold);
    outline-offset: 2px;
}

/* ── Text Selection ─────────────────────────────────────────── */
::selection {
    background-color: var(--gold);
    color: var(--green);
}

::-moz-selection {
    background-color: var(--gold);
    color: var(--green);
}