/* Responsive Utilities for QUANNEX */

/* Responsive Container System */
:root {
    /* Container System */
    --container-padding: clamp(1rem, 5vw, 2rem);
    --section-spacing: clamp(2rem, 8vw, 4rem);
    --content-width-sm: min(100% - 2rem, 640px);
    --content-width-md: min(100% - 4rem, 768px);
    --content-width-lg: min(100% - 6rem, 1024px);
    --content-width-xl: min(100% - 8rem, 1280px);
    
    /* Grid System */
    --grid-gap: clamp(1rem, 3vw, 2rem);
    --card-padding: clamp(1rem, 3vw, 2rem);
    
    /* Border Radius */
    --border-radius-sm: clamp(4px, 1vw, 8px);
    --border-radius-md: clamp(8px, 2vw, 16px);
    --border-radius-lg: clamp(16px, 3vw, 24px);
    
    /* Typography */
    --fluid-min-width: 320;
    --fluid-max-width: 1200;
    --fluid-min-scale: 1.2;
    --fluid-max-scale: 1.333;
    --fluid-min-size: 16;
    --fluid-max-size: 20;
}

/* Container Classes */
.container {
    width: 100%;
    margin-inline: auto;
    padding-inline: var(--container-padding);
}

.container-sm { max-width: var(--content-width-sm); }
.container-md { max-width: var(--content-width-md); }
.container-lg { max-width: var(--content-width-lg); }
.container-xl { max-width: var(--content-width-xl); }

/* Grid System */
.grid {
    display: grid;
    gap: var(--grid-gap);
    width: 100%;
}

.grid-auto-fit {
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr));
}

.grid-auto-fill {
    grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr));
}

/* Responsive Spacing */
.section {
    padding-block: var(--section-spacing);
}

.stack {
    display: flex;
    flex-direction: column;
    gap: var(--grid-gap);
}

.cluster {
    display: flex;
    flex-wrap: wrap;
    gap: var(--grid-gap);
}

/* Responsive Typography */
@media (max-width: 767px) {
    :root {
        --h1-size: clamp(2rem, calc(1.5rem + 2.5vw), 3rem);
        --h2-size: clamp(1.5rem, calc(1.25rem + 2vw), 2.5rem);
        --h3-size: clamp(1.25rem, calc(1.125rem + 1.5vw), 2rem);
        --body-size: clamp(1rem, calc(0.875rem + 0.5vw), 1.125rem);
    }

    h1 { font-size: var(--h1-size); }
    h2 { font-size: var(--h2-size); }
    h3 { font-size: var(--h3-size); }
    p, li { font-size: var(--body-size); }
}

/* Responsive Images */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

.aspect-ratio {
    position: relative;
    width: 100%;
}

.aspect-ratio > * {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.aspect-ratio-16-9 { padding-bottom: 56.25%; }
.aspect-ratio-4-3 { padding-bottom: 75%; }
.aspect-ratio-1-1 { padding-bottom: 100%; }

/* Responsive Cards */
.card {
    background: var(--card-bg);
    border-radius: var(--border-radius-md);
    padding: var(--card-padding);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

@media (hover: hover) {
    .card:hover {
        transform: translateY(-2px);
        box-shadow: var(--shadow-lg);
    }
}

/* Responsive Tables */
.table-container {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: clamp(0.875rem, calc(0.75rem + 0.5vw), 1rem);
}

/* Responsive Forms */
.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

input, select, textarea {
    width: 100%;
    padding: 0.75rem;
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--border-color);
    font-size: clamp(0.875rem, calc(0.75rem + 0.5vw), 1rem);
}

/* Responsive Buttons */
.button-group {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

@media (max-width: 767px) {
    .button-group {
        flex-direction: column;
    }
    
    .button-group > * {
        width: 100%;
    }
}

/* Responsive Lists */
.list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.list-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--card-bg);
    border-radius: var(--border-radius-sm);
}

/* Responsive Footer */
.footer {
    padding: var(--section-spacing) var(--container-padding);
    background: var(--footer-bg);
}

.footer-grid {
    display: grid;
    gap: var(--grid-gap);
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* Print Styles */
@media print {
    .no-print {
        display: none !important;
    }

    body {
        font-size: 12pt;
        line-height: 1.5;
    }

    a {
        text-decoration: none;
        color: black;
    }

    img {
        max-width: 100% !important;
        page-break-inside: avoid;
    }
}

/* Utility Classes */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.hidden-mobile {
    display: none;
}

@media (min-width: 768px) {
    .hidden-mobile {
        display: block;
    }
    
    .hidden-desktop {
        display: none;
    }
}

/* 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;
    }
}

/* Dark Mode */
@media (prefers-color-scheme: dark) {
    :root {
        --card-bg: rgba(255, 255, 255, 0.05);
        --border-color: rgba(255, 255, 255, 0.1);
    }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    :root {
        --primary-color: #0000ff;
        --secondary-color: #ff0000;
        --accent-color: #ffff00;
    }
    
    * {
        text-shadow: none !important;
        box-shadow: none !important;
    }
}

/* Touch Device Optimizations */
@media (hover: none) {
    .hover-only {
        display: none !important;
    }
    
    .touch-target {
        min-height: 44px;
        min-width: 44px;
        padding: 0.75rem;
    }
}

/* Landscape Mode */
@media (orientation: landscape) and (max-height: 500px) {
    .mobile-nav {
        height: auto;
        padding: 0.5rem var(--mobile-nav-padding);
    }
    
    .mobile-nav-item {
        flex-direction: row;
        gap: 0.5rem;
    }
}

/* Performance Optimizations */
.will-change-transform {
    will-change: transform;
}

.will-change-opacity {
    will-change: opacity;
}

.hardware-accelerated {
    transform: translateZ(0);
    backface-visibility: hidden;
    perspective: 1000px;
}