:root, [data-bs-theme="light"] {
    --bs-body-bg: #f8f9fa;
    --bs-body-color: #212529;
    --card-bg: #ffffff;
    --card-shadow: 0 4px 6px rgba(0,0,0,0.05);
    --fc-bg-color: #ffffff;
    --fc-border-color: var(--bs-gray-200);
}

[data-bs-theme="dark"] {
    --bs-body-bg: #212529;
    --bs-body-color: #dee2e6;
    --card-bg: #343a40;
    --card-shadow: 0 4px 8px rgba(0,0,0,0.2);
    --fc-bg-color: #2c3034;
    --fc-border-color: var(--bs-gray-700);
}

body {
    background-color: var(--bs-body-bg);
    color: var(--bs-body-color);
    padding-top: 1rem;
    transition: background-color 0.3s, color 0.3s;
}

.container-fluid {
    max-width: 1400px;
}

#calendar-container {
    position: relative;
    background-color: var(--fc-bg-color);
    padding: 20px;
    border-radius: 8px;
    box-shadow: var(--card-shadow);
    transition: background-color 0.3s, box-shadow 0.3s;
}

.fc {
    --fc-border-color: var(--fc-border-color);
}

.fc-scrollgrid-sync-table {
    scrollbar-gutter: stable;
}

.fc .fc-toolbar-title {
    font-size: 1.5rem;
}

.fc-daygrid {
    scrollbar-gutter: stable;
}

.fc .fc-daygrid-day-frame {
    cursor: pointer;
}

.fc-event {
    cursor: pointer;
    padding: 3px 5px;
    margin-bottom: 2px;
    border-radius: 3px;
    font-size: 0.8em;
    text-align: center;
}

.fc-event-main {
    overflow-wrap: break-word;
}

.fc-event-details {
    white-space: nowrap;
}

/* 로딩 인디케이터 */
#calendar.loading::after {
    content: '로딩 중...';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: rgba(var(--bs-body-bg-rgb), 0.8);
    color: var(--bs-body-color);
    padding: 20px;
    border-radius: 5px;
    z-index: 1000;
}

.controls-container {
    background-color: var(--card-bg);
    box-shadow: var(--card-shadow);
    transition: background-color 0.3s, box-shadow 0.3s;
}

.form-label {
    font-size: .875em;
    margin-bottom: 0.2rem;
    color: var(--bs-secondary-color);
}

.dropdown-toggle::after {
    margin-left: auto;
}

/* 다크 모드 스위치 */
.theme-switch-wrapper {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Responsive Styles */
@media (max-width: 767.98px) {
    h3 {
        font-size: 1.5rem;
    }
    .controls-container .col-sm-4 {
        flex: 0 0 auto;
        width: 33.33333333%;
    }
    .fc .fc-toolbar-title {
        font-size: 1.2rem;
    }
    .fc-event {
        font-size: 0.75em;
    }
    .fc .fc-day-header, .fc .fc-col-header-cell-cushion {
        font-size: 0.8rem;
    }
}