/* Accessibility and custom styles for the date picker */

/* 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;
}

/* Calendar view modes */
.calendar-view {
    opacity: 1;
    transition: opacity 0.2s ease-in-out;
    display: block;
}

.calendar-view.hidden {
    display: none;
    opacity: 0;
}

/* Calendar grid styling */
.calendar-grid {
    grid-template-rows: repeat(6, minmax(40px, auto));
}

/* Calendar day styling */
.calendar-cell {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 36px;
    width: 36px;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.2s ease;
    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    margin: 2px auto;
    font-size: 14px;
}

.calendar-cell:hover:not([aria-disabled="true"]) {
    background-color: #f3f4f6;
}

.calendar-cell[aria-selected="true"] {
    background-color: #3b82f6;
    color: white;
}

/* Focus styles */
.calendar-cell:focus {
    outline: 1px solid #3b82f6;
    outline-offset: 1px;
    z-index: 1;
}

/* Day in range styling */
.calendar-cell.in-range {
    background-color: #eff6ff;
}

.calendar-cell.range-start,
.calendar-cell.range-end {
    background-color: #3b82f6;
    color: white;
    z-index: 1;
}

/* Today indicator */
.calendar-cell[aria-current="date"] {
    border: 1px solid #3b82f6;
}

/* Month/Year selector */
#monthYearSelector:focus {
    outline: none;
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.5);
}

/* Weekday headers */
.weekdays-row > div {
    text-align: center;
    font-weight: 500;
    font-size: 12px;
    color: #6b7280;
    text-transform: uppercase;
    padding: 8px 0;
}

/* High contrast mode support */
@media (forced-colors: active) {
    .calendar-cell[aria-selected="true"] {
        border: 2px solid CanvasText;
    }
    
    .calendar-cell[aria-current="date"] {
        border: 1px dashed CanvasText;
    }
}

/* Touch support for mobile */
@media (pointer: coarse) {
    .calendar-cell {
        height: 44px;
        width: 44px;
    }
    
    button {
        min-height: 44px;
        min-width: 44px;
    }
    
    /* Improve touch targets in sidebar */
    #datepickerSidebar button {
        padding: 0.75rem 1rem;
    }
}

/* Responsive design for small screens */
@media screen and (max-width: 640px) {
    .calendar-popup {
        position: fixed !important;
        top: auto !important;
        left: 0 !important;
        right: 0 !important;
        bottom: 0 !important;
        width: 100% !important;
        max-width: 100% !important;
        border-radius: 1.5rem 1.5rem 0 0;
        z-index: 999;
        box-shadow: 0 -4px 10px -2px rgba(0, 0, 0, 0.15);
        transform: translateY(0) !important;
        max-height: 90vh;
        overflow-y: auto;
        /* Safer approach for safe area insets for cross-browser compatibility */
        padding-bottom: calc(constant(safe-area-inset-bottom, 1rem) + 1rem) !important; /* iOS 11.0 */
        padding-bottom: calc(env(safe-area-inset-bottom, 1rem) + 1rem) !important; /* iOS 11.2+ */
        /* Improve scrolling behavior */
        -webkit-overflow-scrolling: touch;
    }
    
    /* Make the flex layout column on mobile */
    .calendar-popup > div {
        flex-direction: column !important;
        width: 100%;
    }
    
    /* Adjust sidebar for mobile */
    #datepickerSidebar {
        width: 100%;
        overflow-x: auto;
        display: flex;
        flex-wrap: nowrap;
        padding: 0.75rem;
        border-right: 0;
        border-bottom: 1px solid #e5e7eb;
        margin-bottom: 1rem;
        /* Improve scroll appearance using cross-browser approaches */
        -ms-overflow-style: none;  /* IE and Edge */
        scrollbar-width: none;  /* Firefox */
        -webkit-overflow-scrolling: touch; /* iOS Safari */
    }
    
    #datepickerSidebar::-webkit-scrollbar {
        display: none;  /* Hide scrollbar for Chrome/Safari/Opera */
        width: 0 !important;
        height: 0 !important;
    }
    
    #datepickerSidebar > div {
        flex: 0 0 auto;
        margin-right: 1rem;
    }
    
    #datepickerSidebar .space-y-2 {
        display: flex;
        gap: 0.75rem;
        overflow-x: auto;
        margin: 0;
        padding-bottom: 0.5rem;
        -ms-overflow-style: none; /* IE and Edge */
        scrollbar-width: none; /* Firefox */
        -webkit-overflow-scrolling: touch; /* iOS Safari */
    }
    
    #datepickerSidebar .space-y-2::-webkit-scrollbar {
        display: none;
        width: 0 !important;
        height: 0 !important;
    }
    
    #datepickerSidebar .space-y-2 > button {
        flex: 0 0 auto;
        white-space: nowrap;
        font-size: 0.875rem;
        padding: 0.625rem 1rem;
        border-radius: 1.5rem;
        border: 1px solid #e5e7eb;
        /* Improve touch target size */
        min-height: 44px;
        min-width: 44px;
    }
    
    /* Add a small indicator for horizontal scrolling */
    #datepickerSidebar:after {
        content: '';
        position: absolute;
        right: 0;
        top: 50%;
        transform: translateY(-50%);
        width: 24px;
        height: 24px;
        background: linear-gradient(to right, transparent, rgba(255,255,255,0.9));
        pointer-events: none;
    }
    
    /* Month/year selector and calendar controls */
    .calendar-header-controls {
        padding: 0.5rem 0.25rem;
    }
    
    /* Calendar cells should be responsive */
    .calendar-grid {
        grid-template-columns: repeat(7, 1fr);
        width: 100%;
    }
    
    .calendar-cell {
        width: 100% !important;
        height: auto !important;
        aspect-ratio: 1 / 1;
        max-width: none !important;
    }
    
    /* Single column layout for double month view on mobile */
    #doubleMonthView .flex {
        flex-direction: column;
    }
    
    #doubleMonthView .flex > div:first-child {
        margin-bottom: 1.5rem;
    }
    
    /* Add swipe gesture support */
    #calendarViewContainer {
        touch-action: pan-y;
        width: 100%;
    }
    
    .calendar-grid {
        touch-action: manipulation;
    }
    
    /* Calendar footer should be fixed to bottom on mobile */
    .calendar-footer {
        padding: 1rem;
        position: sticky;
        bottom: 0;
        background-color: white;
        border-top: 1px solid #f3f4f6;
        margin: 0 -1rem -1rem -1rem;
        padding-bottom: env(safe-area-inset-bottom, 1rem);
        z-index: 1;
    }
    
    /* Adding swipe animation for calendar transitions */
    #calendarViewContainer.swiping {
        transition: transform 0.3s ease, opacity 0.3s ease;
    }
}

/* Additional styling classes for responsive behavior */
.calendar-popup.small-mobile {
    padding: 1rem !important;
}

.calendar-popup.tablet {
    box-shadow: 0 15px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    border-radius: 1rem !important;
}

/* Animations */
@keyframes slideUpIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.calendar-popup:not(.hidden) {
    animation: slideUpIn 0.2s ease-out;
}

/* Calendar view transitions */
.calendar-view {
    animation: fadeIn 0.2s ease-out;
}

/* Month/Year grid transitions */
#monthsGrid, #yearsGrid {
    transition: all 0.3s ease-out;
}

/* Better input field interaction */
.date-input {
    transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

.date-input:focus {
    border-color: #3b82f6;
    outline: none;
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.3);
}

/* Mobile-specific animations */
@media screen and (max-width: 640px) {
    /* Slide up animation for mobile popup */
    @keyframes slideUpFromBottom {
        from {
            transform: translateY(100%);
            opacity: 0;
        }
        to {
            transform: translateY(0);
            opacity: 1;
        }
    }
    
    .calendar-popup.mobile-popup:not(.hidden) {
        animation: slideUpFromBottom 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    }
    
    /* Add horizontal swipe animation class */
    .horizontal-swipe-animation {
        transition: transform 0.3s ease-out;
    }
}

/* Very small screens optimization */
@media screen and (max-width: 380px) {
    .calendar-cell {
        font-size: 12px;
    }
    
    #monthYearSelector {
        font-size: 0.9rem;
    }
    
    #datepickerSidebar .space-y-2 > button {
        font-size: 0.75rem;
        padding: 0.5rem 0.75rem;
    }
    
    /* Optimize month and year grid for very small screens */
    #monthsGrid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    #yearsGrid {
        grid-template-columns: repeat(3, 1fr);
        gap: 0.5rem;
    }
    
    /* Reduce padding to maximize space */
    .calendar-popup {
        padding: 1rem;
    }
}

/* Tablet optimization */
@media screen and (min-width: 641px) and (max-width: 1024px) {
    .calendar-popup {
        max-width: 90vw;
    }
    
    /* Use two columns for months in tablet view */
    #doubleMonthView .flex {
        gap: 1rem;
    }
    
    /* Ensure calendar maintains reasonable proportions */
    .calendar-cell {
        height: 38px;
        width: 38px;
    }
}

/* Landscape mode optimization for mobile */
@media screen and (max-width: 640px) and (orientation: landscape) {
    .calendar-popup {
        max-height: 85vh; /* Slightly less height to accommodate landscape */
    }
    
    /* Adjust sidebar to be more compact in landscape */
    #datepickerSidebar {
        padding: 0.5rem;
        margin-bottom: 0.5rem;
    }
    
    #datepickerSidebar .space-y-2 > button {
        padding: 0.4rem 0.75rem;
    }
    
    /* Make calendar cells more compact for landscape */
    .calendar-cell {
        width: auto !important;
        aspect-ratio: 1.2 / 1;
        font-size: 0.8rem;
    }
    
    /* Optimize footer for landscape */
    .calendar-footer {
        padding: 0.5rem 1rem;
    }
    
    /* Use a horizontal layout for side-by-side viewing in landscape */
    body.landscape-mode .calendar-popup > div {
        flex-direction: row !important;
    }
    
    body.landscape-mode #datepickerSidebar {
        width: 30%;
        flex-direction: column;
        border-right: 1px solid #e5e7eb;
        border-bottom: none;
    }
    
    body.landscape-mode #calendarViewContainer {
        width: 70%;
    }
}

/* Add improved touch feedback for all devices */
@media (pointer: coarse) {
    .calendar-cell:active {
        transform: scale(0.95);
        opacity: 0.9;
    }
    
    button:active {
        transform: scale(0.97);
    }
    
    /* Add visual indication of which day is being touched */
    .calendar-cell.touching {
        background-color: rgba(59, 130, 246, 0.1);
    }
}

/* Optimize input field for mobile */
@media screen and