/**
 * PharmaCare Production Accessibility & Responsive Enhancements Layer
 * WCAG 2.2 Level AA Complementary Styles
 * Preserves dynamic tenant branding, Bootstrap, AdminLTE, Dark Mode, and RTL/LTR.
 */

/* ==========================================================================
   1. Skip Navigation Link
   ========================================================================== */
.skip-nav-link {
    position: absolute;
    top: -100px;
    inset-inline-start: 1rem;
    z-index: 100000;
    padding: 0.75rem 1.25rem;
    background: var(--primary-color, #0f766e);
    color: #ffffff !important;
    font-weight: 700;
    font-size: 0.95rem;
    text-decoration: none !important;
    border-radius: 0 0 0.5rem 0.5rem;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
    transition: top 0.2s ease-in-out;
}

.skip-nav-link:focus,
.skip-nav-link:focus-visible {
    top: 0;
    outline: 3px solid #ffffff;
    outline-offset: 2px;
}

/* ==========================================================================
   2. Keyboard Focus Indicators (:focus-visible)
   ========================================================================== */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
[tabindex]:focus-visible,
.btn:focus-visible {
    outline: 2px solid var(--primary-color, #0f766e) !important;
    outline-offset: 2px !important;
}

/* Ensure focus outline is distinct in dark theme */
.dark-theme a:focus-visible,
.dark-theme button:focus-visible,
.dark-theme input:focus-visible,
.dark-theme select:focus-visible,
.dark-theme textarea:focus-visible,
.dark-theme [tabindex]:focus-visible {
    outline-color: #2dd4bf !important;
}

/* ==========================================================================
   3. Screen Reader Utilities
   ========================================================================== */
.sr-only,
.visually-hidden {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

.sr-only-focusable:active,
.sr-only-focusable:focus {
    position: static !important;
    width: auto !important;
    height: auto !important;
    overflow: visible !important;
    clip: auto !important;
    white-space: normal !important;
}

/* ==========================================================================
   4. Reduced Motion Support (WCAG 2.2 Reflow & Motion)
   ========================================================================== */
@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;
    }
}

/* ==========================================================================
   5. Touch Target Enhancements (Component-Aware, Non-destructive)
   ========================================================================== */
@media (max-width: 767.98px) {
    /* Primary mobile CTAs, cart actions, and standalone controls */
    .btn-mobile-touch,
    .product-medical-card .medical-btn,
    .cart-item-row .change-qty,
    .cart-item-row .remove-item-btn,
    .theme-toggle-btn,
    .search-bar-icon {
        min-height: 44px;
        min-width: 44px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }

    /* Keep pagination touchable without visual bloating */
    .pagination-wrap ul li a,
    .pagination-wrap ul li span {
        min-width: 40px;
        min-height: 40px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }
}

/* ==========================================================================
   6. Overflow & Table Accessibility
   ========================================================================== */
.table-responsive {
    position: relative;
    max-width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.table-responsive:focus-visible {
    outline: 2px solid var(--primary-color, #0f766e);
    border-radius: 4px;
}

/* Prevent accidental horizontal overflow globally */
html, body {
    overflow-x: clip;
}

@supports not (overflow-x: clip) {
    html, body {
        overflow-x: hidden;
    }
}

/* ==========================================================================
   7. Form Accessibility Helpers
   ========================================================================== */
.is-invalid + .invalid-feedback,
.is-invalid ~ .alert-medical-error {
    display: block;
    margin-top: 0.35rem;
    font-size: 0.85rem;
}

/* High contrast placeholder styling */
::placeholder {
    color: #64748b !important;
    opacity: 1 !important;
}

.dark-theme ::placeholder {
    color: #94a3b8 !important;
}