/* ============================================================
   Accessibility Improvements - Task 14
   Hotel Reservation Management System
   ============================================================ */

/* ── Skip Navigation Link ───────────────────────────────────── */
/* Already in site.css but enhance here for robustness */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: #0d6efd;
    color: #fff;
    padding: 8px 16px;
    text-decoration: none;
    border-radius: 0 0 4px 4px;
    z-index: 10000;
    font-weight: 600;
    font-size: 0.875rem;
    transition: top 0.2s ease;
    white-space: nowrap;
}

.skip-link:focus {
    top: 0;
    color: #fff;
    outline: 3px solid #fff;
    outline-offset: 2px;
}

/* ── Enhanced Focus Indicators ──────────────────────────────── */
/* Override Bootstrap's default focus ring with a more visible one */
:focus-visible {
    outline: 3px solid #0d6efd !important;
    outline-offset: 3px !important;
    box-shadow: 0 0 0 4px rgba(13, 110, 253, 0.25) !important;
}

/* Remove focus ring for mouse users (only show for keyboard) */
:focus:not(:focus-visible) {
    outline: none !important;
    box-shadow: none !important;
}

/* Restore Bootstrap's focus ring for form controls (always visible) */
.form-control:focus,
.form-select:focus {
    outline: 2px solid #0d6efd !important;
    outline-offset: 0 !important;
    box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25) !important;
}

/* ── High-contrast focus for dark backgrounds ───────────────── */
.navbar :focus-visible,
.gp-navbar :focus-visible {
    outline: 3px solid #fff !important;
    outline-offset: 3px !important;
    box-shadow: 0 0 0 4px rgba(255, 255, 255, 0.3) !important;
}

/* ── Button focus states ────────────────────────────────────── */
.btn:focus-visible {
    outline: 3px solid #0d6efd !important;
    outline-offset: 3px !important;
    box-shadow: 0 0 0 4px rgba(13, 110, 253, 0.25) !important;
}

.btn-danger:focus-visible {
    outline-color: #dc3545 !important;
    box-shadow: 0 0 0 4px rgba(220, 53, 69, 0.25) !important;
}

.btn-success:focus-visible {
    outline-color: #198754 !important;
    box-shadow: 0 0 0 4px rgba(25, 135, 84, 0.25) !important;
}

/* ── Link focus states ──────────────────────────────────────── */
a:focus-visible {
    outline: 3px solid #0d6efd !important;
    outline-offset: 3px !important;
    border-radius: 2px;
}

/* ── Dropdown item focus ────────────────────────────────────── */
.dropdown-item:focus-visible {
    background-color: #e9ecef;
    outline: 2px solid #0d6efd !important;
    outline-offset: -2px !important;
}

/* ── Modal focus ────────────────────────────────────────────── */
.modal-content:focus-visible {
    outline: none !important;
}

/* ── Calendar event focus ───────────────────────────────────── */
.fc-event:focus-visible,
.fc-timeline-event:focus-visible {
    outline: 3px solid #fff !important;
    outline-offset: 2px !important;
    box-shadow: 0 0 0 5px rgba(13, 110, 253, 0.5) !important;
    z-index: 20 !important;
}

/* ── Dashboard widget focus ─────────────────────────────────── */
.grid-stack-item:focus-visible {
    outline: 3px solid #0d6efd !important;
    outline-offset: 2px !important;
    box-shadow: 0 0 0 4px rgba(13, 110, 253, 0.2) !important;
}

/* ── Notification item focus ────────────────────────────────── */
.notification-item:focus-visible {
    outline: 2px solid #0d6efd !important;
    outline-offset: -2px !important;
    background-color: rgba(13, 110, 253, 0.05) !important;
}

/* ── Mobile bottom nav focus ────────────────────────────────── */
.mobile-bottom-nav .nav-item:focus-visible {
    outline: 3px solid #0d6efd !important;
    outline-offset: 2px !important;
    background-color: rgba(13, 110, 253, 0.1) !important;
}

/* ── Tab panel focus ────────────────────────────────────────── */
[role="tab"]:focus-visible {
    outline: 2px solid #0d6efd !important;
    outline-offset: 2px !important;
    border-radius: 4px;
}

/* ── Keyboard shortcut hint ─────────────────────────────────── */
.kbd-hint {
    display: inline-block;
    padding: 0.1em 0.4em;
    font-size: 0.75em;
    font-family: 'Courier New', monospace;
    background: #f8f9fa;
    border: 1px solid #adb5bd;
    border-radius: 3px;
    box-shadow: 0 1px 0 rgba(0,0,0,.2);
    color: #495057;
    white-space: nowrap;
}

/* ── Dashboard keyboard instructions ───────────────────────── */
.dashboard-keyboard-hint {
    font-size: 0.8125rem;
    color: #6c757d;
    padding: 0.5rem 0;
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    align-items: center;
}

.dashboard-keyboard-hint .kbd-hint {
    font-size: 0.7rem;
}

/* ── Focus trap indicator (for modals) ──────────────────────── */
.modal.show .modal-content {
    /* Subtle indicator that focus is trapped */
    box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.15), 0 0.5rem 1rem rgba(0,0,0,.15);
}

/* ── Visually hidden but focusable ──────────────────────────── */
.visually-hidden-focusable:not(:focus):not(:focus-within) {
    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;
}

/* ── Reduced motion support ─────────────────────────────────── */
@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;
    }

    .skip-link {
        transition: none;
    }
}

/* ── Color contrast overrides (WCAG AA 4.5:1) ───────────────── */
/* Bootstrap's .text-muted (#6c757d) fails 4.5:1 on white — override to #595c5f */
.text-muted {
    color: #595c5f !important;
}

/* Ensure placeholder text meets 3:1 minimum (decorative) */
::placeholder {
    color: #6b7280 !important;
    opacity: 1;
}

/* Small/secondary text used in cards and tables inherits parent color — do not lighten below 4.5:1 */

/* Status badges — ensure text contrast on colored backgrounds */
.badge.bg-warning,
.badge.text-bg-warning {
    color: #1a1a1a !important; /* dark text on yellow */
}

.badge.bg-info,
.badge.text-bg-info {
    color: #0a2533 !important; /* dark text on cyan */
}

/* ── Form validation error styling ──────────────────────────── */
/* Ensure error messages are clearly visible and associated */
.invalid-feedback {
    display: block; /* always reserve space when .is-invalid is set */
    font-size: 0.875rem;
    color: #b91c1c; /* darker red — passes 4.5:1 on white */
    margin-top: 0.25rem;
}

.form-control.is-invalid,
.form-select.is-invalid {
    border-color: #b91c1c;
    background-image: none; /* remove Bootstrap's icon — we use text error */
    padding-right: 0.75rem; /* restore normal padding */
}

.form-control.is-invalid:focus,
.form-select.is-invalid:focus {
    border-color: #b91c1c;
    box-shadow: 0 0 0 0.25rem rgba(185, 28, 28, 0.25) !important;
    outline: 2px solid #b91c1c !important;
}

/* ── Required field indicator ────────────────────────────────── */
/* Ensure the asterisk is not the only indicator — label text must also convey required */
.form-label .text-danger[aria-hidden="true"] {
    margin-left: 0.2em;
    font-weight: 700;
}

/* ── High contrast mode support (expanded) ───────────────────── */
@media (forced-colors: active) {
    /* Skip link */
    .skip-link {
        forced-color-adjust: none;
        background: ButtonFace;
        color: ButtonText;
        border: 2px solid ButtonText;
    }

    /* Focus rings */
    :focus-visible {
        outline: 3px solid Highlight !important;
        outline-offset: 3px !important;
        box-shadow: none !important;
    }

    /* Buttons */
    .btn {
        forced-color-adjust: none;
        border: 2px solid ButtonText;
    }

    .btn-primary {
        background: Highlight;
        color: HighlightText;
        border-color: Highlight;
    }

    .btn-outline-primary,
    .btn-outline-secondary,
    .btn-outline-danger {
        background: ButtonFace;
        color: ButtonText;
        border-color: ButtonText;
    }

    /* Form controls */
    .form-control,
    .form-select {
        forced-color-adjust: none;
        background: Field;
        color: FieldText;
        border: 2px solid ButtonText;
    }

    .form-control.is-invalid,
    .form-select.is-invalid {
        border-color: LinkText;
        outline: 2px solid LinkText;
    }

    .invalid-feedback {
        forced-color-adjust: none;
        color: LinkText;
    }

    /* Badges and status indicators */
    .badge,
    .status-badge {
        forced-color-adjust: none;
        background: Highlight;
        color: HighlightText;
        border: 1px solid HighlightText;
    }

    /* Calendar legend dots */
    .cal-legend-dot {
        forced-color-adjust: none;
        border: 2px solid ButtonText;
    }

    /* Navbar */
    .navbar,
    .gp-navbar {
        forced-color-adjust: none;
        background: Canvas !important;
        border-bottom: 2px solid ButtonText;
    }

    .navbar .nav-link,
    .gp-navbar .navbar-brand {
        color: LinkText !important;
    }

    /* Cards */
    .card,
    .gp-card {
        border: 2px solid ButtonText !important;
        box-shadow: none !important;
    }

    /* Alerts */
    .alert {
        forced-color-adjust: none;
        border: 2px solid ButtonText;
    }

    /* Loading spinner */
    .spinner-border {
        forced-color-adjust: none;
        border-color: ButtonText;
        border-right-color: transparent;
    }

    /* Mobile bottom nav */
    .mobile-bottom-nav,
    .gp-mobile-nav {
        forced-color-adjust: none;
        background: Canvas;
        border-top: 2px solid ButtonText;
    }

    /* Notification badge */
    #notification-badge {
        forced-color-adjust: none;
        background: Highlight !important;
        color: HighlightText !important;
    }
}