/**
 * Chelsea Flower School Booking System - Calendar Styles
 * 
 * Elegant calendar component with luxury branding
 * Supports both frontend booking calendar and admin management calendar
 */

/* Calendar container */
.chelsea-booking-calendar {
    max-width: 900px;
    margin: var(--chelsea-spacing-xl) auto;
    background: var(--chelsea-white);
    border-radius: var(--chelsea-border-radius-large);
    box-shadow: var(--chelsea-shadow-medium);
    overflow: hidden;
    font-family: var(--chelsea-font-family);
    position: relative;
}

.chelsea-booking-calendar::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--chelsea-primary), var(--chelsea-accent));
    z-index: 1;
}

/* Calendar header */
.calendar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--chelsea-primary);
    color: var(--chelsea-white);
    padding: var(--chelsea-spacing-xl);
    position: relative;
}

.calendar-nav {
    background: none;
    border: none;
    color: var(--chelsea-white);
    font-size: var(--chelsea-font-size-xlarge);
    cursor: pointer;
    padding: var(--chelsea-spacing-sm);
    border-radius: var(--chelsea-border-radius);
    transition: var(--chelsea-transition);
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.calendar-nav:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: scale(1.1);
}

.calendar-nav:active {
    transform: scale(0.95);
}

.calendar-nav:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.calendar-title {
    margin: 0;
    font-size: var(--chelsea-font-size-xlarge);
    font-weight: 400;
    text-align: center;
    flex-grow: 1;
    letter-spacing: 0.5px;
}

.calendar-view-toggle {
    display: flex;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--chelsea-border-radius-pill);
    overflow: hidden;
}

.calendar-view-toggle button {
    background: none;
    border: none;
    color: var(--chelsea-white);
    padding: var(--chelsea-spacing-xs) var(--chelsea-spacing-md);
    cursor: pointer;
    transition: var(--chelsea-transition);
    font-size: var(--chelsea-font-size-small);
}

.calendar-view-toggle button.active {
    background: var(--chelsea-white);
    color: var(--chelsea-primary);
}

/* Calendar grid container */
.calendar-grid {
    background: var(--chelsea-white);
}

/* Days of week header */
.calendar-days-header {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    background: var(--chelsea-background);
    border-bottom: 2px solid var(--chelsea-medium-gray);
}

.calendar-day-header {
    padding: var(--chelsea-spacing-md);
    text-align: center;
    font-weight: 600;
    color: var(--chelsea-primary);
    font-size: var(--chelsea-font-size-small);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-right: 1px solid var(--chelsea-medium-gray);
}

.calendar-day-header:last-child {
    border-right: none;
}

.calendar-day-header.weekend {
    color: var(--chelsea-accent);
}

/* Days grid */
.calendar-days-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    min-height: 400px;
}

/* Individual calendar days */
.calendar-day {
    border-right: 1px solid var(--chelsea-medium-gray);
    border-bottom: 1px solid var(--chelsea-medium-gray);
    padding: var(--chelsea-spacing-sm);
    min-height: 80px;
    cursor: pointer;
    transition: var(--chelsea-transition);
    position: relative;
    display: flex;
    flex-direction: column;
    background: var(--chelsea-white);
}

.calendar-day:nth-child(7n) {
    border-right: none;
}

.calendar-day:hover {
    background: var(--chelsea-background);
    transform: scale(1.02);
    box-shadow: var(--chelsea-shadow-light);
    z-index: 2;
}

/* Day number */
.calendar-day-number {
    font-weight: 600;
    font-size: var(--chelsea-font-size-base);
    color: var(--chelsea-primary);
    margin-bottom: var(--chelsea-spacing-xs);
    align-self: flex-start;
}

/* Day states */
.calendar-day.other-month {
    background: #f9f9f9;
    color: var(--chelsea-medium-gray);
    cursor: default;
}

.calendar-day.other-month:hover {
    background: #f9f9f9;
    transform: none;
    box-shadow: none;
}

.calendar-day.other-month .calendar-day-number {
    color: var(--chelsea-medium-gray);
}

.calendar-day.past {
    background: #f5f5f5;
    cursor: not-allowed;
    opacity: 0.6;
}

.calendar-day.past:hover {
    background: #f5f5f5;
    transform: none;
    box-shadow: none;
}

.calendar-day.today {
    background: linear-gradient(135deg, var(--chelsea-background), var(--chelsea-white));
    border: 2px solid var(--chelsea-accent);
}

.calendar-day.today .calendar-day-number {
    color: var(--chelsea-accent);
    font-weight: 700;
}

.calendar-day.weekend {
    background: #fafafa;
}

.calendar-day.weekend .calendar-day-number {
    color: var(--chelsea-accent);
}

/* Availability states */
.calendar-day.available {
    background: #e8f5e8;
    border-left: 4px solid var(--chelsea-success);
}

.calendar-day.available:hover {
    background: #d4f4d4;
}

.calendar-day.available .calendar-day-number {
    color: var(--chelsea-success);
}

.calendar-day.limited {
    background: #fff3cd;
    border-left: 4px solid var(--chelsea-warning);
}

.calendar-day.limited:hover {
    background: #fff0b3;
}

.calendar-day.limited .calendar-day-number {
    color: var(--chelsea-warning);
}

.calendar-day.unavailable {
    background: #f8d7da;
    border-left: 4px solid var(--chelsea-error);
    cursor: not-allowed;
}

.calendar-day.unavailable:hover {
    background: #f8d7da;
    transform: none;
    box-shadow: none;
}

.calendar-day.unavailable .calendar-day-number {
    color: var(--chelsea-error);
}

.calendar-day.selected {
    background: linear-gradient(135deg, var(--chelsea-accent), var(--chelsea-light-gold));
    color: var(--chelsea-white);
    border: 2px solid var(--chelsea-accent);
    box-shadow: var(--chelsea-shadow-medium);
}

.calendar-day.selected .calendar-day-number {
    color: var(--chelsea-white);
}

.calendar-day.selected:hover {
    background: linear-gradient(135deg, var(--chelsea-light-gold), var(--chelsea-accent));
}

/* Day content - bookings, events, etc. */
.calendar-day-content {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    gap: 2px;
    margin-top: var(--chelsea-spacing-xs);
}

.calendar-booking {
    background: var(--chelsea-accent);
    color: var(--chelsea-white);
    padding: 1px 4px;
    border-radius: 2px;
    font-size: 10px;
    font-weight: 500;
    text-overflow: ellipsis;
    overflow: hidden;
    white-space: nowrap;
    cursor: pointer;
    transition: var(--chelsea-transition-fast);
}

.calendar-booking:hover {
    background: var(--chelsea-light-gold);
    transform: scale(1.05);
}

.calendar-booking.course {
    background: var(--chelsea-primary);
}

.calendar-booking.workshop {
    background: var(--chelsea-accent);
}

.calendar-booking.private-hire {
    background: #8e24aa;
}

.calendar-booking.consultation {
    background: var(--chelsea-success);
}

/* Available spots indicator */
.calendar-spots {
    position: absolute;
    bottom: 4px;
    right: 4px;
    background: var(--chelsea-primary);
    color: var(--chelsea-white);
    font-size: 10px;
    padding: 1px 4px;
    border-radius: var(--chelsea-border-radius);
    font-weight: 600;
}

.calendar-day.limited .calendar-spots {
    background: var(--chelsea-warning);
}

.calendar-day.unavailable .calendar-spots {
    background: var(--chelsea-error);
}

/* Calendar legend */
.calendar-legend {
    display: flex;
    justify-content: center;
    gap: var(--chelsea-spacing-lg);
    padding: var(--chelsea-spacing-lg);
    background: var(--chelsea-background);
    border-top: 1px solid var(--chelsea-medium-gray);
    flex-wrap: wrap;
}

.legend-item {
    display: flex;
    align-items: center;
    font-size: var(--chelsea-font-size-small);
    color: var(--chelsea-primary);
}

.legend-color {
    width: 16px;
    height: 16px;
    border-radius: 3px;
    margin-right: var(--chelsea-spacing-xs);
    border: 1px solid var(--chelsea-medium-gray);
}

.legend-color.available {
    background: #e8f5e8;
    border-color: var(--chelsea-success);
}

.legend-color.limited {
    background: #fff3cd;
    border-color: var(--chelsea-warning);
}

.legend-color.unavailable {
    background: #f8d7da;
    border-color: var(--chelsea-error);
}

.legend-color.selected {
    background: var(--chelsea-accent);
    border-color: var(--chelsea-accent);
}

.legend-color.today {
    background: var(--chelsea-background);
    border-color: var(--chelsea-accent);
    border-width: 2px;
}

/* Calendar loading state */
.calendar-loading {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
}

.calendar-loading .loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--chelsea-medium-gray);
    border-top-color: var(--chelsea-accent);
    border-radius: 50%;
    animation: chelsea-spin 1s infinite linear;
}

/* Week view styles */
.calendar-week-view .calendar-days-grid {
    grid-template-columns: repeat(7, 1fr);
    min-height: 300px;
}

.calendar-week-view .calendar-day {
    min-height: 300px;
    padding: var(--chelsea-spacing-md);
}

/* List view styles */
.calendar-list-view {
    display: none;
}

.calendar-list-view.active {
    display: block;
}

.calendar-list-item {
    display: flex;
    align-items: center;
    padding: var(--chelsea-spacing-md);
    border-bottom: 1px solid var(--chelsea-medium-gray);
    transition: var(--chelsea-transition);
}

.calendar-list-item:hover {
    background: var(--chelsea-background);
}

.calendar-list-date {
    min-width: 80px;
    font-weight: 600;
    color: var(--chelsea-primary);
    margin-right: var(--chelsea-spacing-lg);
}

.calendar-list-content {
    flex-grow: 1;
}

.calendar-list-title {
    font-weight: 600;
    color: var(--chelsea-primary);
    margin-bottom: var(--chelsea-spacing-xs);
}

.calendar-list-details {
    font-size: var(--chelsea-font-size-small);
    color: var(--chelsea-dark-gray);
}

/* Admin calendar enhancements */
.admin-calendar .calendar-day {
    min-height: 100px;
}

.admin-calendar .calendar-booking {
    cursor: pointer;
    position: relative;
}

.admin-calendar .calendar-booking:hover {
    z-index: 5;
}

.admin-calendar .booking-tooltip {
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--chelsea-primary);
    color: var(--chelsea-white);
    padding: var(--chelsea-spacing-xs) var(--chelsea-spacing-sm);
    border-radius: var(--chelsea-border-radius);
    font-size: var(--chelsea-font-size-small);
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: var(--chelsea-transition-fast);
    z-index: 100;
}

.admin-calendar .calendar-booking:hover .booking-tooltip {
    opacity: 1;
}

/* Quick add button for admin */
.calendar-quick-add {
    position: absolute;
    top: var(--chelsea-spacing-sm);
    right: var(--chelsea-spacing-sm);
    background: var(--chelsea-accent);
    color: var(--chelsea-white);
    border: none;
    border-radius: 50%;
    width: 24px;
    height: 24px;
    cursor: pointer;
    font-size: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--chelsea-transition-fast);
}

.calendar-day:hover .calendar-quick-add {
    opacity: 1;
}

.calendar-quick-add:hover {
    background: var(--chelsea-light-gold);
    transform: scale(1.1);
}

/* Mobile responsive */
@media (max-width: 768px) {
    .chelsea-booking-calendar {
        margin: var(--chelsea-spacing-lg) var(--chelsea-spacing-sm);
        border-radius: var(--chelsea-border-radius);
    }
    
    .calendar-header {
        padding: var(--chelsea-spacing-lg);
    }
    
    .calendar-title {
        font-size: var(--chelsea-font-size-large);
    }
    
    .calendar-nav {
        font-size: var(--chelsea-font-size-large);
        width: 40px;
        height: 40px;
    }
    
    .calendar-days-grid {
        min-height: 300px;
    }
    
    .calendar-day {
        min-height: 60px;
        padding: var(--chelsea-spacing-xs);
    }
    
    .calendar-day-number {
        font-size: var(--chelsea-font-size-small);
    }
    
    .calendar-booking {
        font-size: 8px;
        padding: 1px 2px;
    }
    
    .calendar-spots {
        font-size: 8px;
        padding: 1px 2px;
    }
    
    .calendar-legend {
        gap: var(--chelsea-spacing-sm);
        padding: var(--chelsea-spacing-md);
    }
    
    .legend-item {
        font-size: 12px;
    }
    
    .legend-color {
        width: 12px;
        height: 12px;
    }
}

@media (max-width: 480px) {
    .calendar-header {
        flex-direction: column;
        gap: var(--chelsea-spacing-md);
    }
    
    .calendar-nav {
        position: absolute;
        top: var(--chelsea-spacing-md);
    }
    
    .calendar-nav.prev-month {
        left: var(--chelsea-spacing-md);
    }
    
    .calendar-nav.next-month {
        right: var(--chelsea-spacing-md);
    }
    
    .calendar-title {
        font-size: var(--chelsea-font-size-base);
        margin-top: var(--chelsea-spacing-xl);
    }
    
    .calendar-view-toggle {
        align-self: center;
    }
    
    .calendar-day {
        min-height: 50px;
        padding: 2px;
    }
    
    .calendar-day-number {
        font-size: 12px;
    }
    
    .calendar-day-content {
        margin-top: 2px;
    }
    
    .calendar-booking {
        font-size: 7px;
        padding: 1px;
    }
    
    .calendar-spots {
        font-size: 7px;
        padding: 1px 2px;
        bottom: 2px;
        right: 2px;
    }
    
    .calendar-legend {
        flex-direction: column;
        align-items: center;
        gap: var(--chelsea-spacing-xs);
    }
}

/* Print styles for calendar */
@media print {
    .chelsea-booking-calendar {
        box-shadow: none;
        border: 1px solid #ccc;
    }
    
    .calendar-header {
        background: #f5f5f5 !important;
        color: #333 !important;
    }
    
    .calendar-nav {
        display: none;
    }
    
    .calendar-view-toggle {
        display: none;
    }
    
    .calendar-day {
        border: 1px solid #ccc;
        min-height: 80px;
    }
    
    .calendar-booking {
        background: #ddd !important;
        color: #333 !important;
    }
    
    .calendar-legend {
        border-top: 1px solid #ccc;
        background: #f5f5f5;
    }
}

/* High contrast mode */
@media (prefers-contrast: high) {
    .calendar-day.available {
        background: #90EE90 !important;
        border-left-color: #008000 !important;
    }
    
    .calendar-day.limited {
        background: #FFD700 !important;
        border-left-color: #FF8C00 !important;
    }
    
    .calendar-day.unavailable {
        background: #FFB6C1 !important;
        border-left-color: #DC143C !important;
    }
    
    .calendar-booking {
        background: #000000 !important;
        color: #FFFFFF !important;
        border: 1px solid #FFFFFF !important;
    }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    .calendar-day,
    .calendar-nav,
    .calendar-booking,
    .calendar-quick-add {
        transition: none !important;
    }
    
    .calendar-day:hover {
        transform: none !important;
    }
    
    .calendar-nav:hover {
        transform: none !important;
    }
    
    .calendar-booking:hover {
        transform: none !important;
    }
    
    .calendar-loading .loading-spinner {
        animation: none !important;
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    .chelsea-booking-calendar {
        background: #1a1a1a;
        color: #e0e0e0;
    }
    
    .calendar-header {
        background: #2a2a2a;
        color: #e0e0e0;
    }
    
    .calendar-days-header {
        background: #2a2a2a;
        border-color: #444;
    }
    
    .calendar-day-header {
        color: #e0e0e0;
        border-color: #444;
    }
    
    .calendar-day {
        background: #1a1a1a;
        border-color: #444;
        color: #e0e0e0;
    }
    
    .calendar-day:hover {
        background: #2a2a2a;
    }
    
    .calendar-day-number {
        color: #e0e0e0;
    }
    
    .calendar-day.today {
        background: linear-gradient(135deg, #2a2a2a, #1a1a1a);
        border-color: var(--chelsea-accent);
    }
    
    .calendar-day.weekend {
        background: #222;
    }
    
    .calendar-day.other-month {
        background: #0f0f0f;
        color: #666;
    }
    
    .calendar-day.past {
        background: #151515;
        opacity: 0.4;
    }
    
    .calendar-legend {
        background: #2a2a2a;
        border-color: #444;
    }
    
    .legend-item {
        color: #e0e0e0;
    }
    
    .legend-color {
        border-color: #666;
    }
}

/* Custom animations for calendar transitions */
@keyframes calendar-slide-in-left {
    from {
        transform: translateX(-100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes calendar-slide-in-right {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes calendar-fade-in {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.calendar-month-transition.prev {
    animation: calendar-slide-in-left 0.3s ease-out;
}

.calendar-month-transition.next {
    animation: calendar-slide-in-right 0.3s ease-out;
}

.calendar-day.newly-available {
    animation: calendar-fade-in 0.5s ease-out;
}

/* Calendar popup/modal styles */
.calendar-popup-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.calendar-popup-overlay.active {
    opacity: 1;
}

.calendar-popup {
    background: var(--chelsea-white);
    border-radius: var(--chelsea-border-radius-large);
    box-shadow: var(--chelsea-shadow-heavy);
    max-width: 90vw;
    max-height: 90vh;
    overflow: auto;
    transform: scale(0.8);
    transition: transform 0.3s ease;
}

.calendar-popup-overlay.active .calendar-popup {
    transform: scale(1);
}

.calendar-popup-header {
    background: var(--chelsea-primary);
    color: var(--chelsea-white);
    padding: var(--chelsea-spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.calendar-popup-title {
    margin: 0;
    font-size: var(--chelsea-font-size-large);
}

.calendar-popup-close {
    background: none;
    border: none;
    color: var(--chelsea-white);
    font-size: var(--chelsea-font-size-large);
    cursor: pointer;
    padding: var(--chelsea-spacing-xs);
    border-radius: var(--chelsea-border-radius);
    transition: var(--chelsea-transition);
}

.calendar-popup-close:hover {
    background: rgba(255, 255, 255, 0.1);
}

.calendar-popup-content {
    padding: var(--chelsea-spacing-xl);
}

/* Booking details in calendar popup */
.calendar-booking-details {
    display: grid;
    gap: var(--chelsea-spacing-md);
}

.booking-detail-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--chelsea-spacing-sm) 0;
    border-bottom: 1px solid var(--chelsea-medium-gray);
}

.booking-detail-row:last-child {
    border-bottom: none;
}

.booking-detail-label {
    font-weight: 600;
    color: var(--chelsea-primary);
}

.booking-detail-value {
    color: var(--chelsea-dark-gray);
}

.booking-actions {
    margin-top: var(--chelsea-spacing-lg);
    display: flex;
    gap: var(--chelsea-spacing-sm);
    justify-content: flex-end;
}

/* Mini calendar widget */
.chelsea-calendar-widget {
    max-width: 300px;
    border-radius: var(--chelsea-border-radius);
    box-shadow: var(--chelsea-shadow-light);
    overflow: hidden;
}

.chelsea-calendar-widget .calendar-header {
    padding: var(--chelsea-spacing-md);
}

.chelsea-calendar-widget .calendar-title {
    font-size: var(--chelsea-font-size-base);
}

.chelsea-calendar-widget .calendar-nav {
    width: 30px;
    height: 30px;
    font-size: var(--chelsea-font-size-base);
}

.chelsea-calendar-widget .calendar-day {
    min-height: 35px;
    padding: 2px;
}

.chelsea-calendar-widget .calendar-day-number {
    font-size: var(--chelsea-font-size-small);
}

.chelsea-calendar-widget .calendar-booking {
    font-size: 8px;
    padding: 1px 2px;
}

.chelsea-calendar-widget .calendar-legend {
    display: none;
}

/* Accessibility enhancements */
.calendar-day:focus {
    outline: 2px solid var(--chelsea-accent);
    outline-offset: -2px;
    z-index: 3;
}

.calendar-nav:focus {
    outline: 2px solid var(--chelsea-white);
    outline-offset: 2px;
}

.calendar-booking:focus {
    outline: 2px solid var(--chelsea-white);
    outline-offset: 1px;
}

/* Screen reader only content for calendar */
.calendar-sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Calendar keyboard navigation indicators */
.calendar-day.keyboard-focus {
    box-shadow: inset 0 0 0 2px var(--chelsea-accent);
    z-index: 3;
}

/* Calendar loading skeleton */
.calendar-skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: calendar-skeleton-loading 2s infinite;
}

@keyframes calendar-skeleton-loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}