/**
 * Ultra-Luxury Booking Calendar - CSS
 * ARMAGEDDON v5.x — Phase 1 Booking Enhancement
 * Version: 1.0.0
 * Last Updated: 2026-01-12
 * 
 * Design Philosophy:
 * - Glass morphism aesthetic (Apple + Hermès level)
 * - Gold color palette (#C9A227, #D4AF37)
 * - 60fps animations
 * - Mobile-first responsive
 * - WCAG 2.1 AA compliant
 * 
 * Optimized for:
 * - Core Web Vitals
 * - Reduced motion support
 * - Touch-friendly interactions (44px minimum)
 * - Print media (deferred loading)
 */

/* ================================================
   CSS CUSTOM PROPERTIES
   ================================================ */
:root {
    --ch-calendar-gold: #C9A227;
    --ch-calendar-gold-light: #D4AF37;
    --ch-calendar-gold-dark: #B8911E;
    --ch-calendar-bg-dark: rgba(26, 26, 26, 0.95);
    --ch-calendar-bg-darker: rgba(44, 44, 44, 0.95);
    --ch-calendar-text-light: #FAF8F5;
    --ch-calendar-text-dark: #1a1a1a;
    --ch-calendar-text-muted: rgba(255, 255, 255, 0.6);
    --ch-calendar-border: rgba(201, 162, 39, 0.2);
    --ch-calendar-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ================================================
   BOOKING HUB CONTAINER
   ================================================ */
.ch-booking-hub {
    background: linear-gradient(135deg, var(--ch-calendar-bg-dark), var(--ch-calendar-bg-darker));
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--ch-calendar-border);
    border-radius: 24px;
    padding: 32px;
    box-shadow: 
        0 25px 50px rgba(0, 0, 0, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    max-width: 480px;
    margin: 0 auto;
}

/* ================================================
   HEADER
   ================================================ */
.ch-booking-header {
    text-align: center;
    margin-bottom: 32px;
}

.ch-booking-title {
    font-family: 'Cormorant Garamond', serif;
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--ch-calendar-text-light);
    margin: 0 0 8px 0;
    letter-spacing: 0.5px;
}

.ch-booking-subtitle {
    font-family: 'Montserrat', sans-serif;
    font-size: 0.875rem;
    color: var(--ch-calendar-text-muted);
    margin: 0;
    letter-spacing: 0.3px;
}

/* ================================================
   CALENDAR CONTAINER
   ================================================ */
.ch-calendar-container {
    margin-bottom: 32px;
}

/* ================================================
   CALENDAR NAVIGATION
   ================================================ */
.ch-calendar-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    gap: 16px;
}

.ch-calendar-nav-btn {
    width: 44px;
    height: 44px;
    min-width: 44px;
    min-height: 44px;
    border-radius: 50%;
    background: rgba(201, 162, 39, 0.1);
    border: 1px solid rgba(201, 162, 39, 0.3);
    color: var(--ch-calendar-gold);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--ch-calendar-transition);
    flex-shrink: 0;
}

.ch-calendar-nav-btn:hover:not(:disabled) {
    background: var(--ch-calendar-gold);
    color: var(--ch-calendar-text-dark);
    transform: scale(1.1);
}

.ch-calendar-nav-btn:active:not(:disabled) {
    transform: scale(0.95);
}

.ch-calendar-nav-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.ch-calendar-nav-btn:focus-visible {
    outline: 2px solid var(--ch-calendar-gold);
    outline-offset: 2px;
}

.ch-calendar-month {
    font-family: 'Cormorant Garamond', serif;
    font-size: 1.5rem;
    color: var(--ch-calendar-text-light);
    font-weight: 600;
    text-align: center;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.ch-calendar-month-name {
    display: block;
}

.ch-calendar-month-year {
    display: block;
    font-size: 1rem;
    font-weight: 400;
    color: var(--ch-calendar-text-muted);
}

/* ================================================
   WEEKDAY HEADERS
   ================================================ */
.ch-calendar-weekdays {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 8px;
    margin-bottom: 12px;
}

.ch-calendar-weekdays span {
    font-family: 'Montserrat', sans-serif;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--ch-calendar-text-muted);
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ================================================
   DATE GRID
   ================================================ */
.ch-calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 8px;
    transition: var(--ch-calendar-transition);
    min-height: 280px;
}

.ch-calendar-date {
    position: relative;
    width: 48px;
    height: 48px;
    min-width: 44px;
    min-height: 44px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Montserrat', sans-serif;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--ch-calendar-text-light);
    cursor: pointer;
    transition: var(--ch-calendar-transition);
    background: transparent;
    border: none;
    overflow: hidden;
}

/* Hover State */
.ch-calendar-date:not(.unavailable):not(.disabled):hover {
    background: rgba(201, 162, 39, 0.15);
    transform: scale(1.1);
    box-shadow: 0 0 20px rgba(201, 162, 39, 0.3);
}

/* Selected Date */
.ch-calendar-date.selected {
    background: linear-gradient(135deg, var(--ch-calendar-gold), var(--ch-calendar-gold-light));
    color: var(--ch-calendar-text-dark);
    font-weight: 600;
    box-shadow: 0 4px 15px rgba(201, 162, 39, 0.4);
}

/* Date Range */
.ch-calendar-date.in-range {
    background: rgba(201, 162, 39, 0.1);
    border-radius: 0;
}

.ch-calendar-date.in-range:first-of-type {
    border-top-left-radius: 12px;
    border-bottom-left-radius: 12px;
}

.ch-calendar-date.in-range:last-of-type {
    border-top-right-radius: 12px;
    border-bottom-right-radius: 12px;
}

/* Unavailable */
.ch-calendar-date.unavailable,
.ch-calendar-date.disabled {
    color: rgba(255, 255, 255, 0.25);
    background: repeating-linear-gradient(
        45deg,
        transparent,
        transparent 2px,
        rgba(255, 255, 255, 0.03) 2px,
        rgba(255, 255, 255, 0.03) 4px
    );
    cursor: not-allowed;
    pointer-events: none;
}

/* Today */
.ch-calendar-date.today {
    border: 2px solid var(--ch-calendar-gold);
}

/* Empty cells (padding days) */
.ch-calendar-date.empty {
    visibility: hidden;
    pointer-events: none;
}

/* Focus visible */
.ch-calendar-date:focus-visible {
    outline: 2px solid var(--ch-calendar-gold);
    outline-offset: 2px;
}

/* Ripple Effect */
.ch-ripple {
    position: absolute;
    border-radius: 50%;
    background: rgba(201, 162, 39, 0.5);
    transform: scale(0);
    animation: ripple-animation 0.6s ease-out;
    pointer-events: none;
}

@keyframes ripple-animation {
    to {
        transform: scale(4);
        opacity: 0;
    }
}

/* Price Preview */
.ch-calendar-price-preview {
    position: absolute;
    bottom: -30px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--ch-calendar-gold);
    color: var(--ch-calendar-text-dark);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    z-index: 10;
}

.ch-calendar-date:hover .ch-calendar-price-preview {
    opacity: 1;
}

/* ================================================
   BOOKING SUMMARY
   ================================================ */
.ch-booking-summary {
    background: rgba(0, 0, 0, 0.2);
    border-radius: 16px;
    padding: 24px;
    margin-bottom: 24px;
}

.ch-summary-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.ch-summary-row:last-of-type {
    margin-bottom: 0;
}

.ch-summary-label {
    font-family: 'Montserrat', sans-serif;
    font-size: 0.875rem;
    color: var(--ch-calendar-text-muted);
    font-weight: 500;
}

.ch-summary-value {
    font-family: 'Montserrat', sans-serif;
    font-size: 0.875rem;
    color: var(--ch-calendar-text-light);
    font-weight: 600;
}

.ch-summary-divider {
    height: 1px;
    background: var(--ch-calendar-border);
    margin: 20px 0;
}

.ch-summary-total .ch-summary-label {
    font-size: 1rem;
    color: var(--ch-calendar-text-light);
}

.ch-summary-total .ch-summary-value {
    font-size: 1.25rem;
    color: var(--ch-calendar-gold);
}

.ch-summary-note {
    font-family: 'Montserrat', sans-serif;
    font-size: 0.75rem;
    color: var(--ch-calendar-text-muted);
    text-align: center;
    margin: 12px 0 0 0;
    font-style: italic;
}

/* ================================================
   GUEST SELECTOR
   ================================================ */
.ch-guest-selector {
    display: flex;
    align-items: center;
    gap: 12px;
}

.ch-guest-btn {
    width: 32px;
    height: 32px;
    min-width: 32px;
    min-height: 32px;
    border-radius: 8px;
    background: rgba(201, 162, 39, 0.1);
    border: 1px solid rgba(201, 162, 39, 0.3);
    color: var(--ch-calendar-gold);
    cursor: pointer;
    font-size: 1.25rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--ch-calendar-transition);
    line-height: 1;
}

.ch-guest-btn:hover:not(:disabled) {
    background: var(--ch-calendar-gold);
    color: var(--ch-calendar-text-dark);
    transform: scale(1.1);
}

.ch-guest-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.ch-guest-btn:focus-visible {
    outline: 2px solid var(--ch-calendar-gold);
    outline-offset: 2px;
}

.ch-guest-count {
    font-family: 'Montserrat', sans-serif;
    font-size: 1rem;
    color: var(--ch-calendar-text-light);
    font-weight: 600;
    min-width: 24px;
    text-align: center;
}

/* ================================================
   CTA BUTTON
   ================================================ */
.ch-booking-cta {
    width: 100%;
    padding: 18px 32px;
    background: linear-gradient(135deg, var(--ch-calendar-gold), var(--ch-calendar-gold-light));
    border: none;
    border-radius: 16px;
    color: var(--ch-calendar-text-dark);
    font-family: 'Montserrat', sans-serif;
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    transition: var(--ch-calendar-transition);
    box-shadow: 0 4px 20px rgba(201, 162, 39, 0.3);
}

.ch-booking-cta:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(201, 162, 39, 0.4);
}

.ch-booking-cta:active:not(:disabled) {
    transform: translateY(0);
}

.ch-booking-cta:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.ch-booking-cta:focus-visible {
    outline: 2px solid var(--ch-calendar-text-dark);
    outline-offset: 2px;
}

.ch-booking-cta .ch-arrow {
    transition: transform 0.3s ease;
}

.ch-booking-cta:hover:not(:disabled) .ch-arrow {
    transform: translateX(4px);
}

/* ================================================
   RESPONSIVE DESIGN
   ================================================ */

/* Tablets */
@media (max-width: 768px) {
    .ch-booking-hub {
        padding: 24px;
        border-radius: 20px;
    }
    
    .ch-booking-title {
        font-size: 1.5rem;
    }
    
    .ch-calendar-month {
        font-size: 1.25rem;
    }
    
    .ch-calendar-date {
        width: 44px;
        height: 44px;
    }
}

/* Mobile */
@media (max-width: 480px) {
    .ch-booking-hub {
        padding: 20px;
        border-radius: 16px;
    }
    
    .ch-booking-header {
        margin-bottom: 24px;
    }
    
    .ch-booking-title {
        font-size: 1.375rem;
    }
    
    .ch-booking-subtitle {
        font-size: 0.813rem;
    }
    
    .ch-calendar-nav {
        gap: 12px;
    }
    
    .ch-calendar-month {
        font-size: 1.125rem;
    }
    
    .ch-calendar-month-year {
        font-size: 0.875rem;
    }
    
    .ch-calendar-weekdays {
        gap: 4px;
    }
    
    .ch-calendar-grid {
        gap: 4px;
    }
    
    .ch-calendar-date {
        /* Maintain 44px minimum for accessibility (WCAG 2.1 AA) */
        width: 44px;
        height: 44px;
        font-size: 0.813rem;
    }
    
    .ch-booking-summary {
        padding: 20px;
    }
    
    .ch-booking-cta {
        padding: 16px 24px;
        font-size: 0.938rem;
    }
}

/* ================================================
   ACCESSIBILITY - REDUCED MOTION
   ================================================ */
@media (prefers-reduced-motion: reduce) {
    .ch-calendar-date,
    .ch-calendar-nav-btn,
    .ch-guest-btn,
    .ch-booking-cta,
    .ch-calendar-grid,
    .ch-calendar-price-preview {
        transition: none;
    }
    
    .ch-calendar-date:hover,
    .ch-calendar-nav-btn:hover,
    .ch-guest-btn:hover {
        transform: none;
    }
    
    .ch-booking-cta:hover {
        transform: none;
    }
    
    .ch-ripple {
        display: none;
    }
}

/* ================================================
   PRINT STYLES
   ================================================ */
@media print {
    .ch-booking-hub {
        background: white;
        color: black;
        box-shadow: none;
        border: 1px solid #ccc;
    }
    
    .ch-calendar-nav-btn,
    .ch-booking-cta {
        display: none;
    }
}