/* ============================================
   БЛОК 05: BOOKING - Форма бронирования
   Версия: 7.1 - Aurora Premium Design
   
   CHANGELOG v7.1:
   - Removed ALL var(--tg-theme-*) hardcoded backgrounds
   - Summary: glass card with border-radius
   - Form inputs: bg-elevated + accent focus
   - Guest block: glass card
   - Buttons: accent-gradient + glow
   - Refresh price: glass card
   - Uses shared tokens from variables.css
   
   DEPENDS ON:
   - shared/variables.css  (tokens)
   - shared/base.css       (.screen, .glass-card)
   ============================================ */

/* --- Экран бронирования --- */
#bookingScreen {
    display: none;
}

#bookingScreen.active {
    display: flex;
    flex-direction: column;
}

/* ============================================
   СВОДКА ПО БРОНИРОВАНИЮ — Glass card
   ============================================ */

.booking-summary {
    padding: var(--spacing-lg);
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    flex-shrink: 0;
    margin-bottom: var(--spacing-md);
}

.summary-hotel h3 {
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.summary-room,
.summary-dates,
.summary-guests {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.summary-price {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
}

.summary-price span:last-child {
    color: var(--color-success);
}

/* ============================================
   ФОРМА БРОНИРОВАНИЯ
   ============================================ */

.booking-form {
    padding: 0;
    flex: 1;
}

.form-section {
    margin-bottom: var(--spacing-xxl);
}

.form-section h4 {
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.form-section .form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.form-section .form-group {
    margin-bottom: var(--spacing-md);
}

.form-section .form-group.half {
    width: 100%;
    margin-bottom: 0;
}

.form-section .form-group label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    margin-bottom: 6px;
    color: var(--text-primary);
}

.form-section .form-group input {
    width: 100%;
    padding: 12px 14px;
    background: var(--bg-elevated) !important;
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: var(--font-size-md);
    font-family: inherit;
    transition: all var(--transition-fast) var(--ease-smooth);
}

.form-section .form-group input::placeholder {
    color: var(--text-disabled);
}

.form-section .form-group input:focus {
    outline: none;
    border-color: var(--accent-primary);
    background: var(--glass-bg-active) !important;
    box-shadow: 0 0 0 3px var(--accent-subtle);
}

.form-section .form-group input:invalid:not(:placeholder-shown) {
    border-color: var(--color-danger);
}

.field-hint {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
    margin-top: 4px;
}

/* --- Блок гостя — Glass card --- */
.guest-block {
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
}

.guest-block h5 {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

/* --- Чекбоксы --- */
.checkbox-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: 20px;
    height: 20px;
    accent-color: var(--accent-primary);
    cursor: pointer;
}

/* ============================================
   УВЕДОМЛЕНИЯ — Glass + warning border
   ============================================ */

.booking-notice {
    padding: var(--spacing-lg);
    background: rgba(251, 191, 36, 0.06);
    border: 1px solid rgba(251, 191, 36, 0.25);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-xl);
}

.booking-notice p {
    font-size: var(--font-size-sm);
    color: var(--color-warning);
    margin: 0;
}

/* ============================================
   КНОПКИ ДЕЙСТВИЙ
   ============================================ */

.booking-actions {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-xl) 0;
    padding-bottom: calc(var(--content-bottom) + var(--spacing-xl));
    background: transparent;
}

/* Обновить цену — Glass card */
.btn-refresh-price {
    padding: 12px 20px;
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    font-size: var(--font-size-sm);
    font-family: inherit;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all var(--transition-fast) var(--ease-out);
    white-space: nowrap;
}

.btn-refresh-price:active {
    transform: scale(0.97);
    background: var(--glass-bg-hover);
}

.btn-refresh-price.loading {
    opacity: 0.7;
    pointer-events: none;
}

.btn-refresh-price.loading .btn-icon {
    animation: spin 1s linear infinite;
}

.btn-refresh-price.confirmed {
    border-color: rgba(52, 211, 153, 0.3);
    color: var(--color-success);
}

.btn-refresh-price.changed {
    border-color: rgba(251, 191, 36, 0.3);
    color: var(--color-warning);
}

/* Подтвердить — Accent gradient + glow */
.booking-actions .btn-book {
    width: 100%;
    max-width: 300px;
    padding: 16px 32px;
    background: var(--accent-gradient);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-lg);
    color: white;
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-semibold);
    font-family: inherit;
    cursor: pointer;
    transition: all var(--transition-fast) var(--ease-out);
    position: relative;
    overflow: hidden;
    box-shadow:
        0 4px 20px rgba(102, 126, 234, 0.35),
        0 8px 40px rgba(118, 75, 162, 0.2);
}

/* Shine overlay */
.booking-actions .btn-book::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.15) 0%, transparent 50%);
    border-radius: inherit;
    pointer-events: none;
}

.booking-actions .btn-book:active {
    transform: scale(0.97);
    box-shadow:
        0 2px 12px rgba(102, 126, 234, 0.4),
        0 4px 20px rgba(118, 75, 162, 0.25);
}

.booking-actions .btn-book:disabled {
    opacity: 0.5;
    pointer-events: none;
}

/* ============================================
   OVERLAY ЗАГРУЗКИ
   ============================================ */

.booking-loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.booking-loading-overlay .spinner {
    width: 48px;
    height: 48px;
    border: 4px solid rgba(255, 255, 255, 0.15);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: var(--spacing-lg);
}

.booking-loading-overlay p {
    color: var(--text-primary);
    font-size: var(--font-size-md);
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ============================================
   АДАПТИВНОСТЬ
   ============================================ */

@media (max-width: 380px) {
    .form-section .form-row {
        grid-template-columns: 1fr;
    }
    
    .booking-actions .btn-book {
        padding: 14px 24px;
        font-size: var(--font-size-md);
    }
    
    .btn-refresh-price {
        font-size: var(--font-size-sm);
    }
}