/* Mobile First Responsive Design */

/* Cross-browser fluid defaults */
html,
body {
    max-width: 100%;
    overflow-x: hidden;
}

img,
video,
canvas,
svg,
iframe {
    max-width: 100%;
    height: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th,
td {
    overflow-wrap: anywhere;
    word-break: break-word;
}

input,
select,
textarea,
button {
    max-width: 100%;
    font: inherit;
}

/* Avoid iOS zoom on focused form fields */
@media (max-width: 768px) {
    input,
    select,
    textarea,
    button {
        font-size: 16px;
    }
}

/* Honor safe-area insets on modern mobile browsers */
@supports (padding: max(0px)) {
    .main-content,
    .container {
        padding-left: max(12px, env(safe-area-inset-left));
        padding-right: max(12px, env(safe-area-inset-right));
    }
}

/* Base Styles - Mobile (320px and up) */
body {
    font-size: var(--font-md);
    line-height: 1.6;
}

.container {
    width: 100%;
    padding: 0 var(--spacing-md);
    margin: 0 auto;
}

/* Responsive Grid System */
.grid {
    display: grid;
    gap: var(--spacing-md);
}

.grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }

/* Flexible Components */
.flex {
    display: flex;
}

.flex-col {
    flex-direction: column;
}

.flex-wrap {
    flex-wrap: wrap;
}

.items-center {
    align-items: center;
}

.justify-between {
    justify-content: space-between;
}

.justify-center {
    justify-content: center;
}

.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }

/* Responsive Utilities */
.hidden-mobile {
    display: none;
}

.show-mobile {
    display: block;
}

/* Small Tablets (640px and up) */
@media (min-width: 640px) {
    .container {
        max-width: 640px;
        padding: 0 var(--spacing-lg);
    }
    
    .sm\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .sm\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    
    .sm\:flex-row {
        flex-direction: row;
    }
    
    .sm\:hidden {
        display: none;
    }
    
    .sm\:block {
        display: block;
    }
}

/* Tablets (768px and up) */
@media (min-width: 768px) {
    .container {
        max-width: 768px;
    }
    
    body {
        font-size: var(--font-lg);
    }
    
    .md\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .md\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .md\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
    
    .md\:flex-row {
        flex-direction: row;
    }
    
    .md\:hidden {
        display: none;
    }
    
    .md\:block {
        display: block;
    }
    
    .hidden-mobile {
        display: block;
    }
    
    .show-mobile {
        display: none;
    }
}

/* Laptops (1024px and up) */
@media (min-width: 1024px) {
    .container {
        max-width: 1024px;
        padding: 0 var(--spacing-xl);
    }
    
    .lg\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .lg\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
    .lg\:grid-cols-5 { grid-template-columns: repeat(5, minmax(0, 1fr)); }
    
    .lg\:hidden {
        display: none;
    }
    
    .lg\:block {
        display: block;
    }
}

/* Desktops (1280px and up) */
@media (min-width: 1280px) {
    .container {
        max-width: 1280px;
    }
    
    .xl\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
    .xl\:grid-cols-5 { grid-template-columns: repeat(5, minmax(0, 1fr)); }
    .xl\:grid-cols-6 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
}

/* Large Desktops (1536px and up) */
@media (min-width: 1536px) {
    .container {
        max-width: 1536px;
    }
}

/* Touch-Friendly Sizing */
@media (hover: none) and (pointer: coarse) {
    button, a, .clickable {
        min-height: 44px;
        min-width: 44px;
        padding: var(--spacing-md);
    }

    .nav-link,
    .dropdown-item,
    .btn {
        min-height: 44px;
    }
}

/* Print Styles */
@media print {
    .no-print {
        display: none !important;
    }
    
    body {
        background: white;
        color: black;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::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) {
    :root {
        --border-color: var(--black);
    }
    
    button, .card {
        border: 2px solid var(--black);
    }
}