/* 基本樣式 */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f8f9fa;
}

.app-content {
    width: 100%;
    margin: 0 auto;
}

.app-content.app-content-narrow {
    max-width: 70vw;
}

.no-chrome-main {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: 2rem 1rem;
}

.navbar-brand {
    font-weight: bold;
}

.card {
    transition: transform 0.2s ease-in-out, box-shadow 0.2s ease-in-out;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1) !important;
}

.btn {
    transition: all 0.2s ease-in-out;
}

.btn:hover {
    transform: translateY(-1px);
}

/* 月曆樣式 */
.calendar-day {
    min-height: 120px;
    border: 1px solid #dee2e6;
    padding: 8px;
    position: relative;
    background-color: white;
    transition: background-color 0.2s;
}

.calendar-day:hover {
    background-color: #f8f9fa;
}

.calendar-day.has-work {
    background-color: #e3f2fd;
    border-color: #2196f3;
}

.work-hours {
    position: absolute;
    top: 5px;
    right: 5px;
    font-size: 0.8em;
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 2px;
}

.day-header {
    background-color: #f8f9fa;
    padding: 10px;
    text-align: center;
    font-weight: bold;
    border: 1px solid #dee2e6;
}

.day-number {
    font-weight: bold;
    color: #495057;
    margin-bottom: 5px;
}

.work-item {
    background-color: #007bff;
    color: white;
    padding: 2px 4px;
    margin: 1px 0;
    border-radius: 3px;
    font-size: 0.7em;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    cursor: pointer;
}

.work-item:hover {
    background-color: #0056b3;
}

/* 表格樣式 */
.table {
    border-radius: 0.5rem;
    overflow: hidden;
}

.table th {
    background-color: #f8f9fa;
    border-top: none;
    font-weight: 600;
}

/* 管理儀表板按鈕樣式 */
.admin-actions .btn-group .btn {
    padding: 0.375rem 0.75rem; /* 恢復 Bootstrap 預設 padding */
    font-size: 0.9rem; /* 調整字體大小 */
}

.admin-actions .dropdown-menu .dropdown-item {
    font-size: 0.9rem; /* 調整下拉選單項目字體大小 */
}

/* 統計卡片樣式 */
.stats-card {
    background: linear-gradient(135deg, #667eea 0%, #4b62a2 100%);
    color: white;
    border: none;
}

.stats-card .card-body {
    padding: 2rem;
}

.bg-warning {
  background-color: #28b176 !important;
}

/* 響應式設計 */
@media (max-width: 768px) {
    .calendar-day {
        min-height: 80px;
        padding: 4px;
    }
    
    .work-item {
        font-size: 0.6em;
        padding: 1px 2px;
    }
    
    .day-number {
        font-size: 0.9em;
    }
}

/* 載入動畫 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255,255,255,.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
}

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

/* 警告和成功訊息樣式 */
.alert {
    border: none;
    border-radius: 0.5rem;
}

.alert-success {
    background-color: #d1e7dd;
    color: #0f5132;
}

.alert-danger {
    background-color: #f8d7da;
    color: #842029;
}

/* 彈窗樣式 */
.modal-content {
    border-radius: 0.5rem;
}

.modal-header {
    border-bottom: none;
}

.modal-footer {
    border-top: none;
}

/* 管理功能區域樣式 */
.management-functions .card {
    border: 2px solid #e9ecef;
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
}

.management-functions .card-header {
    background-color: #f8f9fa;
    border-bottom: 2px solid #e9ecef;
    font-weight: 600;
}

.management-functions .btn {
    border-radius: 0.375rem;
    font-weight: 500;
    padding: 0.5rem 1rem;
    transition: all 0.2s ease-in-out;
}

.management-functions .btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.management-functions .btn-outline-primary:hover {
    background-color: #0d6efd;
    border-color: #0d6efd;
}

.management-functions .btn-outline-info:hover {
    background-color: #0dcaf0;
    border-color: #0dcaf0;
}

.management-functions .btn-outline-warning:hover {
    background-color: #ffc107;
    border-color: #ffc107;
    color: #000;
}

.management-functions .btn-outline-danger:hover {
    background-color: #dc3545;
    border-color: #dc3545;
}

.management-functions hr {
    margin: 1rem 0;
    border-color: #dee2e6;
}

/* 助教詳情頁面調整 */
.assistant-detail-container .row {
    margin-bottom: 2rem;
}