#availabilityCalendar {
    min-height: 220px;
}

#checkAvailabilityBtn {
    width: 100%;
    margin-top: 0.6rem;
    border: 0;
    border-radius: 8px;
    padding: 0.75rem 1rem;
    background: #2563eb;
    color: #fff;
    font-weight: 600;
    cursor: pointer;
}

#checkAvailabilityBtn:hover {
    background: #1d4ed8;
}

.modal {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 1040;
    background: rgba(15, 23, 42, 0.55);
    overflow-y: auto;
    padding: 24px 12px;
}

.modal.show {
    display: block;
}

#availabilityModal .modal-dialog {
    max-width: 960px;
    margin: 0 auto;
}

#availabilityModal .modal-content {
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 12px 35px rgba(15, 23, 42, 0.24);
    overflow: hidden;
}

#availabilityModal .modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid #e2e8f0;
    padding: 0.85rem 1rem;
}

#availabilityModal .modal-title {
    margin: 0;
    font-size: 1.05rem;
}

#availabilityModal .close {
    border: 0;
    background: transparent;
    font-size: 1.35rem;
    cursor: pointer;
    line-height: 1;
}

#availabilityModal .modal-body {
    padding: 1rem;
}

.availability-loading {
    text-align: center;
    padding: 2rem 1rem;
    color: #334155;
}

.availability-spinner {
    width: 36px;
    height: 36px;
    border: 3px solid #cbd5e1;
    border-top-color: #1d4ed8;
    border-radius: 50%;
    margin: 0 auto 0.75rem;
    animation: availability-spin 0.8s linear infinite;
}

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

.availability-error {
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: #b91c1c;
    border-radius: 8px;
    padding: 0.75rem 1rem;
}

.availability-meta {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 0.75rem;
    color: #334155;
    font-size: 0.9rem;
}

.availability-legend {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
    font-size: 0.85rem;
    color: #334155;
}

.calendar-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
}

#calendarMonthLabel {
    font-weight: 600;
    color: #0f172a;
    text-align: center;
    flex: 1;
}

.calendar-nav .btn.btn-sm {
    min-width: 36px;
    padding: 0.2rem 0.5rem;
    border: 1px solid #cbd5e1;
    background: #fff;
    border-radius: 6px;
    cursor: pointer;
}

.calendar-nav .btn.btn-sm[disabled] {
    opacity: 0.5;
    cursor: not-allowed;
}

.legend-box {
    width: 14px;
    height: 14px;
    border-radius: 4px;
    display: inline-block;
    margin-right: 0.35rem;
    vertical-align: middle;
    border: 1px solid transparent;
}

.availability-months {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
}

.availability-month {
    border: 1px solid #e2e8f0;
    border-radius: 10px;
    padding: 0.75rem;
    background: #fff;
}

.availability-month h6 {
    margin: 0 0 0.65rem;
    font-size: 0.95rem;
    color: #0f172a;
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 6px;
}

.calendar-day {
    min-height: 36px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    border: 1px solid #e2e8f0;
    user-select: none;
}

.calendar-day.weekday {
    min-height: 24px;
    border: 0;
    font-weight: 600;
    color: #64748b;
}

.calendar-day.empty {
    border: 0;
    background: transparent;
}

.calendar-day.available,
.legend-box.available {
    background: #dcfce7;
    border-color: #86efac;
    color: #166534;
    cursor: pointer;
}

.calendar-day.occupied,
.legend-box.occupied {
    background: #f1f5f9;
    border-color: #e2e8f0;
    color: #94a3b8;
}

.calendar-day.arrival-only,
.legend-box.arrival-only {
    background: #dbeafe;
    border-color: #93c5fd;
    color: #1e40af;
    cursor: pointer;
}

.calendar-day.departure-only,
.legend-box.departure-only {
    background: #fef3c7;
    border-color: #fcd34d;
    color: #92400e;
    cursor: pointer;
}

.calendar-day.disabled {
    cursor: not-allowed;
    opacity: 0.65;
}

.calendar-day.selected {
    box-shadow: inset 0 0 0 2px #0f172a;
    font-weight: 700;
}

.calendar-day.in-range {
    box-shadow: inset 0 0 0 1px #2563eb;
}

.availability-modal-open {
    overflow: hidden;
}

@media (max-width: 768px) {
    .availability-months {
        grid-template-columns: 1fr;
    }
}