/* ==========================================================================
   Accessibility Enhancements
   ========================================================================== */

/* Focus Indicators - Make keyboard navigation visible */
*:focus {
    outline: 3px solid var(--color-primary, #007bff);
    outline-offset: 2px;
}

/* Remove outline for mouse users only */
*:focus:not(:focus-visible) {
    outline: none;
}

/* Restore outline for keyboard users */
*:focus-visible {
    outline: 3px solid var(--color-primary, #007bff);
    outline-offset: 2px;
}

/* High contrast focus for important interactive elements */
button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 3px solid var(--color-primary, #007bff);
    outline-offset: 2px;
    box-shadow: 0 0 0 4px rgba(0, 123, 255, 0.1);
}

/* Touch target size minimum 48x48px for mobile accessibility */
@media (max-width: 768px) {
    button,
    .btn,
    a.nav-link,
    input[type="button"],
    input[type="submit"],
    input[type="reset"] {
        min-height: 48px;
        min-width: 48px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }
}

/* 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-width: 0;
}

/* Screen reader only on focus (for skip links) */
.sr-only-focusable:active,
.sr-only-focusable:focus {
    position: static;
    width: auto;
    height: auto;
    overflow: visible;
    clip: auto;
    white-space: normal;
}

/* Reduced 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;
        scroll-behavior: auto !important;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    button,
    .btn,
    a {
        border: 2px solid currentColor;
    }
}

/* ==========================================================================
   Mobile-First Responsive Patterns
   ========================================================================== */

/* Base styles are mobile-first (no media query needed) */
/* Progressive enhancement for larger screens */

/* Small devices and up (landscape phones, 576px and up) */
@media (min-width: 576px) {
    .container {
        max-width: 540px;
    }
}

/* Medium devices and up (tablets, 768px and up) */
@media (min-width: 768px) {
    .container {
        max-width: 720px;
    }
}

/* Large devices and up (desktops, 992px and up) */
@media (min-width: 992px) {
    .container {
        max-width: 960px;
    }
}

/* Extra large devices and up (large desktops, 1200px and up) */
@media (min-width: 1200px) {
    .container {
        max-width: 1140px;
    }
}

/* Extra extra large devices and up (larger desktops, 1400px and up) */
@media (min-width: 1400px) {
    .container {
        max-width: 1320px;
    }
}