/**
 * Availability Calendar Styles
 * Beautiful modal calendar component for checking availability
 * Version: 1.0
 */

/* ==========================================================================
   Modal Base Styles
   ========================================================================== */

.availability-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: var(--z-modal);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.availability-modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
}

.modal-content {
    position: relative;
    background: white;
    border-radius: 24px;
    box-shadow: 0 30px 100px rgba(0, 0, 0, 0.3);
    max-width: 90vw;
    max-height: 90vh;
    width: 600px;
    overflow: hidden;
    transform: scale(0.9) translateY(20px);
    transition: all 0.3s ease;
}

.availability-modal.active .modal-content {
    transform: scale(1) translateY(0);
}

/* ==========================================================================
   Modal Header
   ========================================================================== */

.modal-header {
    padding: 2rem 2rem 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid #f0f0f0;
    background: linear-gradient(135deg, #f8f9fa, #ffffff);
}

.modal-header h3 {
    margin: 0;
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--color-primary);
}

.close-modal {
    background: none;
    border: none;
    font-size: 2rem;
    color: #999;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.close-modal:hover {
    background: #f5f5f5;
    color: #333;
    transform: scale(1.1);
}

/* ==========================================================================
   Modal Body
   ========================================================================== */

.modal-body {
    padding: 2rem;
    position: relative;
}

/* ==========================================================================
   Loading State
   ========================================================================== */

.loading-spinner {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 3rem;
    color: var(--color-text-secondary);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 1rem;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading-spinner p {
    margin: 0;
    font-weight: 500;
}

/* ==========================================================================
   Error State
   ========================================================================== */

.error-message {
    text-align: center;
    padding: 3rem;
    color: var(--color-text-secondary);
}

.error-message p {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
}

.retry-btn {
    background: var(--color-primary);
    color: white;
    border: none;
    padding: 0.8rem 2rem;
    border-radius: 25px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.retry-btn:hover {
    background: var(--color-primary-light);
    transform: translateY(-2px);
}

/* ==========================================================================
   Calendar Container
   ========================================================================== */

.calendar-container {
    max-width: 100%;
}

.calendar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
    padding: 0 1rem;
}

.calendar-header h4 {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-primary);
    min-width: 200px;
    text-align: center;
}

.nav-btn {
    background: var(--color-primary);
    color: white;
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1.2rem;
    font-weight: bold;
    transition: all 0.3s ease;
}

.nav-btn:hover {
    background: var(--color-primary-light);
    transform: scale(1.1);
}

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

/* ==========================================================================
   Calendar Grid
   ========================================================================== */

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    grid-template-rows: auto repeat(6, 1fr);
    gap: 2px;
    background: #f0f0f0;
    border-radius: 12px;
    padding: 2px;
    margin-bottom: 2rem;
    height: 420px;
}

.calendar-day-header {
    background: var(--color-primary);
    color: white;
    padding: 1rem 0.5rem;
    text-align: center;
    font-weight: 600;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.calendar-day-header:first-child {
    border-top-left-radius: 10px;
}

.calendar-day-header:nth-child(7) {
    border-top-right-radius: 10px;
}

.calendar-day {
    background: white;
    min-height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    cursor: default;
    transition: all 0.3s ease;
}

.calendar-day.empty {
    background: transparent;
}

.day-number {
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--color-text-primary);
}

/* Availability States */
.calendar-day.past {
    background: #f8f8f8;
    color: #ccc;
}

.calendar-day.past .day-number {
    color: #ccc;
}

.calendar-day.available {
    background: linear-gradient(135deg, #e8f5e8, #f0f8f0);
    border: 2px solid #4caf50;
    cursor: pointer;
}

.calendar-day.available:hover {
    background: linear-gradient(135deg, #d4edda, #e8f5e8);
    transform: scale(1.05);
    z-index: 1;
    box-shadow: 0 5px 15px rgba(76, 175, 80, 0.3);
}

.calendar-day.available .day-number {
    color: #2e7d32;
    font-weight: 700;
}

.calendar-day.unavailable {
    background: linear-gradient(135deg, #ffebee, #fce4ec);
    border: 2px solid #f44336;
}

.calendar-day.unavailable .day-number {
    color: #c62828;
    font-weight: 700;
}

.calendar-day.unknown {
    background: #f9f9f9;
    border: 2px solid #ddd;
}

.calendar-day.unknown .day-number {
    color: var(--color-text-secondary);
}

/* Corner rounding for grid */
.calendar-day:nth-child(43) { /* Bottom left corner */
    border-bottom-left-radius: 10px;
}

.calendar-day:nth-child(49) { /* Bottom right corner */
    border-bottom-right-radius: 10px;
}

/* ==========================================================================
   Calendar Legend
   ========================================================================== */

.calendar-legend {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    justify-content: center;
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: #f8f9fa;
    border-radius: 12px;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: var(--color-text-secondary);
}

.legend-color {
    width: 16px;
    height: 16px;
    border-radius: 4px;
    border: 2px solid transparent;
}

.legend-color.available {
    background: linear-gradient(135deg, #e8f5e8, #f0f8f0);
    border-color: #4caf50;
}

.legend-color.unavailable {
    background: linear-gradient(135deg, #ffebee, #fce4ec);
    border-color: #f44336;
}

.legend-color.past {
    background: #f8f8f8;
    border-color: #ddd;
}

/* ==========================================================================
   Modal Footer
   ========================================================================== */

.modal-footer {
    text-align: center;
    padding-top: 1rem;
    border-top: 1px solid #f0f0f0;
}

.contact-note {
    margin: 0;
    color: var(--color-text-secondary);
    font-size: 1rem;
}

.contact-link {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
}

.contact-link:hover {
    color: var(--color-primary-light);
    text-decoration: underline;
}

/* ==========================================================================
   Mobile Responsiveness
   ========================================================================== */

@media (max-width: 768px) {
    .modal-content {
        width: 95vw;
        max-height: 95vh;
        margin: 1rem;
        border-radius: 16px;
    }
    
    .modal-header,
    .modal-body {
        padding: 1.5rem;
    }
    
    .modal-header h3 {
        font-size: 1.5rem;
    }
    
    .calendar-header h4 {
        font-size: 1.3rem;
        min-width: 150px;
    }
    
    .nav-btn {
        width: 35px;
        height: 35px;
        font-size: 1rem;
    }
    
    .calendar-grid {
        height: 360px;
    }
    
    .calendar-day {
        min-height: 50px;
    }
    
    .day-number {
        font-size: 1rem;
    }
    
    .calendar-legend {
        gap: 1rem;
        flex-direction: column;
        align-items: center;
    }
    
    .legend-item {
        font-size: 0.8rem;
    }
}

@media (max-width: 480px) {
    .modal-header,
    .modal-body {
        padding: 1rem;
    }
    
    .calendar-header {
        padding: 0;
        margin-bottom: 1rem;
    }
    
    .calendar-header h4 {
        font-size: 1.2rem;
        min-width: 120px;
    }
    
    .nav-btn {
        width: 32px;
        height: 32px;
        font-size: 0.9rem;
    }
    
    .calendar-grid {
        height: 320px;
    }
    
    .calendar-day {
        min-height: 45px;
    }
    
    .day-number {
        font-size: 0.9rem;
    }
    
    .calendar-day-header {
        padding: 0.8rem 0.3rem;
        font-size: 0.8rem;
    }
}

/* ==========================================================================
   Animation Enhancements
   ========================================================================== */

@media (prefers-reduced-motion: no-preference) {
    .calendar-day {
        transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    }
    
    .calendar-day.available {
        transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    
    .nav-btn,
    .close-modal,
    .retry-btn {
        transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    }
}

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

.calendar-day:focus-visible {
    outline: 3px solid var(--color-primary);
    outline-offset: 2px;
}

.nav-btn:focus-visible,
.close-modal:focus-visible,
.retry-btn:focus-visible {
    outline: 3px solid var(--color-primary);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .calendar-day.available {
        border-color: #000;
        background: #e8f5e8;
    }
    
    .calendar-day.unavailable {
        border-color: #000;
        background: #ffebee;
    }
    
    .modal-content {
        border: 2px solid #000;
    }
}