/* BaboonTalkies Dashboard - 公共样式 */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 20px;
    min-height: 100vh;
    background: linear-gradient(135deg, #f5f7fa 0%, #e4e8ec 100%);
    color: #333333;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    background: #ffffff;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    overflow: hidden;
}

/* Header 样式 */
.header {
    color: #333;
    padding: 10px 30px;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

.header-main {
    text-align: center;
    flex: 1;
}

.header-main h1 {
    font-size: 1.7rem;
    margin-bottom: 0;
    color: #059669;
    background: white;
    padding: 6px 16px;
    border-radius: 8px;
    display: inline-block;
}

.header-main p {
    opacity: 0.9;
    font-size: 1.1em;
}

.header-controls {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 12px;
}

.refresh-info {
    font-size: 0.85em;
    color: #666;
}

.last-refresh-label {
    margin-right: 5px;
}

.last-refresh-time {
    font-weight: 500;
}

/* 刷新按钮样式 */
.refresh-btn {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1em;
    transition: all 0.3s ease;
    min-width: 100px;
    text-align: center;
}

.refresh-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
}

.refresh-btn:active:not(:disabled) {
    transform: translateY(0px);
}

.refresh-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

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

.refresh-btn.loading .refresh-text::after {
    content: '';
    animation: dots 1.5s steps(4, end) infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes dots {
    0%, 20% { content: ''; }
    40% { content: '.'; }
    60% { content: '..'; }
    80%, 100% { content: '...'; }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 20px;
    }

    .header-main {
        text-align: center;
    }

    .header-controls {
        align-items: center;
        flex-direction: column;
    }

    .refresh-info {
        text-align: center;
    }
}

/* 侧边栏导航样式 */
.sidebar {
    width: 220px;
    background: #f8f9fc;
    border-right: 1px solid #e8eaed;
    min-height: calc(100vh - 80px);
    padding: 20px 0;
}

.sidebar-nav {
    list-style: none;
    padding: 0;
    margin: 0;
}

.sidebar-nav li {
    margin: 4px 10px;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    padding: 12px 16px;
    color: #666;
    text-decoration: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s ease;
}

.sidebar-nav a:hover {
    background: #f0f2f5;
    color: #333;
}

.sidebar-nav a.active {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: #ffffff;
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

.sidebar-nav .nav-icon {
    margin-right: 10px;
    font-size: 1.1em;
}

.sidebar-section-title {
    padding: 15px 16px 8px;
    font-size: 12px;
    font-weight: 600;
    color: #999;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* 主内容区域 */
.main-content {
    flex: 1;
    padding: 20px;
    background: #ffffff;
}

.page-layout {
    display: flex;
}

/* 统计卡片样式 */
.stats {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: stretch;
    gap: 20px;
    padding: 30px;
    background: #f8f9fc;
}

.stat-card {
    background: #ffffff;
    padding: 25px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    border: 1px solid #e8eaed;
    transition: all 0.3s ease;
}

.stat-card:hover {
    box-shadow: 0 4px 16px rgba(16, 185, 129, 0.15);
    transform: translateY(-2px);
}

.stat-value {
    font-size: 2.5em;
    font-weight: 700;
    color: #10b981;
    margin-bottom: 5px;
}

.stat-label {
    color: #666666;
    font-size: 0.9em;
}

.stat-breakdown {
    margin-top: 8px;
    font-size: 0.75em;
    color: #888888;
    line-height: 1.4;
}

/* 合并统计卡片样式 */
.combined-stat {
    padding: 15px 20px;
}

.stat-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    min-height: 80px;
}

.stat-item {
    flex: 1;
    text-align: center;
}

.stat-divider {
    width: 1px;
    height: 60px;
    background: linear-gradient(to bottom, transparent, #ddd, transparent);
    margin: 0 20px;
}

/* 按钮样式 */
.btn-primary {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
    border: none;
    padding: 12px 25px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
}

.btn-secondary {
    background: #f5f5f5;
    color: #666;
    border: 1px solid #ddd;
    padding: 12px 25px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background: #e8e8e8;
    color: #333;
}

/* 操作按钮样式 */
.action-buttons {
    padding: 20px;
}

.action-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    width: 100%;
}

.action-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 15px 10px;
    border: 1px solid #d1fae5;
    border-radius: 12px;
    background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%);
    color: #059669;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.9em;
    min-height: 70px;
}

.action-btn:hover {
    border-color: #10b981;
    background: linear-gradient(135deg, #dcfce7 0%, #a7f3d0 100%);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.15);
}

.btn-icon {
    font-size: 1.5em;
    margin-bottom: 4px;
    display: block;
}

.action-btn span {
    font-weight: 500;
    font-size: 0.85em;
}

/* 弹窗样式 */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-content {
    background: #ffffff;
    border-radius: 12px;
    width: 90%;
    max-width: 500px;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

.modal-header {
    padding: 20px 25px 15px;
    border-bottom: 1px solid #eee;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    margin: 0;
    color: #333;
    font-size: 1.2em;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5em;
    cursor: pointer;
    color: #666;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.2s;
}

.modal-close:hover {
    background-color: #f0f0f0;
    color: #333;
}

.modal-body {
    padding: 20px 25px;
}

.modal-footer {
    padding: 15px 25px 20px;
    border-top: 1px solid #eee;
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}

/* 搜索和筛选控件 */
.controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 30px;
    gap: 15px;
    flex-wrap: wrap;
    background: #f8f9fc;
    border-bottom: 1px solid #e8eaed;
}

.search-box {
    flex: 1;
    min-width: 200px;
}

.search-box input {
    width: 100%;
    padding: 12px 20px;
    border: 1px solid #ddd;
    border-radius: 25px;
    font-size: 14px;
    background: #ffffff;
    color: #333;
    transition: all 0.3s ease;
}

.search-box input::placeholder {
    color: #999;
}

.search-box input:focus {
    outline: none;
    border-color: #10b981;
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

.filter-select {
    padding: 12px 20px;
    border: 1px solid #ddd;
    border-radius: 10px;
    font-size: 14px;
    background: #ffffff;
    color: #333;
    cursor: pointer;
    transition: all 0.3s ease;
}

.filter-select:focus {
    outline: none;
    border-color: #10b981;
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

.filter-select option {
    background: #ffffff;
    color: #333;
}

/* 表格样式 */
.table-container {
    margin: 20px;
    background: #ffffff;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid #e8eaed;
}

table {
    width: 100%;
    border-collapse: collapse;
    background: #ffffff;
    table-layout: fixed;
}

th {
    background: #f8f9fc;
    color: #333;
    border-bottom: 2px solid #e8eaed;
    padding: 15px 10px;
    text-align: left;
    font-weight: 600;
    font-size: 0.9em;
    white-space: nowrap;
    cursor: pointer;
    user-select: none;
    position: relative;
    transition: all 0.3s ease;
}

th:hover {
    background: #f0f2f5;
    color: #10b981;
}

th.sortable {
    position: relative;
}

th.narrow-column, td.narrow-column {
    text-align: center;
}

th.type-column, td.type-column {
    text-align: center;
}

th.sortable::after {
    content: "⇅";
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.8em;
    opacity: 0.4;
    color: #10b981;
}

th.sortable:hover::after {
    opacity: 0.8;
}

th.sort-asc::after {
    content: "↑";
    opacity: 1;
    color: #4caf50;
    font-weight: bold;
    font-size: 1em;
}

th.sort-desc::after {
    content: "↓";
    opacity: 1;
    color: #f44336;
    font-weight: bold;
    font-size: 1em;
}

td {
    padding: 12px 10px;
    border-bottom: 1px solid #f0f0f0;
    font-size: 0.9em;
    color: #333;
}

tr:hover {
    background-color: #f8f9fc;
}

/* 同名学员高亮样式 */
tbody tr.student-highlight {
    background-color: #e3f2fd !important;
}

/* 风险学员样式 */
tbody tr.risk-student {
    background-color: #ffebee !important;
}
tbody tr.risk-student td:first-child {
    color: #d32f2f;
    font-weight: bold;
}

/* 同一学员的连续行样式 */
tbody tr.student-group-first {
    border-bottom: none;
}

tbody tr.student-group-middle {
    border-top: none;
    border-bottom: none;
}

tbody tr.student-group-last {
    border-top: none;
}

tbody tr.student-group-first td,
tbody tr.student-group-middle td,
tbody tr.student-group-last td {
    border-bottom: none;
    border-top: none;
    padding-top: 6px;
    padding-bottom: 6px;
}

tbody tr.student-group-first td {
    padding-bottom: 3px;
}

tbody tr.student-group-middle td {
    padding-top: 3px;
    padding-bottom: 3px;
}

tbody tr.student-group-last td {
    padding-top: 3px;
    padding-bottom: 8px;
}

tbody tr:not(.student-group-first):not(.student-group-middle):not(.student-group-last) td,
tbody tr.student-group-last td {
    border-bottom: 1px solid #eee;
}

/* 加载和错误状态 */
.loading {
    text-align: center;
    padding: 50px;
    color: #666;
    font-size: 1.1em;
}

.error {
    text-align: center;
    padding: 50px;
    color: #e74c3c;
    font-size: 1.1em;
}

/* Tab 加载动画 */
.tab-loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.9);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 100;
    min-height: 300px;
}

.tab-loading-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid #e5e7eb;
    border-top: 4px solid #10b981;
    border-radius: 50%;
    animation: tab-spin 1s linear infinite;
}

@keyframes tab-spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.tab-loading-text {
    margin-top: 15px;
    color: #666;
    font-size: 14px;
}

/* 课程类型标签 */
.course-type {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8em;
    font-weight: 500;
}

.course-type.菲教 {
    background: #e3f2fd;
    color: #1976d2;
    border: 1px solid #bbdefb;
}

.course-type.欧教 {
    background: #f3e5f5;
    color: #7b1fa2;
    border: 1px solid #e1bee7;
}

.course-type.一对多 {
    background: #e8f5e9;
    color: #388e3c;
    border: 1px solid #c8e6c9;
}

.breakdown-type {
    font-weight: 600;
}

.breakdown-type.菲教 {
    color: #1976d2;
}

.breakdown-type.欧教 {
    color: #7b1fa2;
}

.breakdown-type.一对多 {
    color: #388e3c;
}

/* 下一节课显示 */
.next-class {
    font-size: 0.85em;
    color: #555;
}

.next-class .teacher {
    font-weight: 600;
    color: #10b981;
}

.next-class .datetime {
    color: #888;
    margin-top: 2px;
}

/* 数字样式 */
.number {
    font-weight: 600;
    text-align: center;
}

.number.positive {
    color: #4caf50;
}

.number.warning {
    color: #ff9800;
}

.number.danger {
    color: #f44336;
}

/* Toast 通知样式 */
.toast {
    position: fixed;
    top: 20px;
    right: 20px;
    background: #28a745;
    color: white;
    padding: 14px 24px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    z-index: 9999;
    font-size: 14px;
    font-weight: 500;
    transform: translateX(400px);
    opacity: 0;
    transition: all 0.3s ease-in-out;
}

.toast.show {
    transform: translateX(0);
    opacity: 1;
}

.toast.hide {
    transform: translateX(400px);
    opacity: 0;
}

.toast-success {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
}

.toast-error {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.toast-info {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.toast-warning {
    background: #ffc107;
    color: #212529;
}

/* 工资计算页面样式 */
.salary-page {
    max-width: 1200px;
    margin: 0 auto;
}

.salary-form {
    background: #f0fdf4;
    padding: 25px;
    border-radius: 12px;
    margin-bottom: 25px;
    border: 1px solid #d1fae5;
}

.salary-form h3 {
    color: #10b981;
    margin-bottom: 20px;
    font-size: 1.3em;
}

.date-inputs {
    display: flex;
    gap: 20px;
    align-items: center;
    flex-wrap: wrap;
}

.date-group {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.date-group label {
    font-weight: 500;
    color: #333;
}

.date-group input {
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 14px;
    background: #ffffff;
    color: #333;
}

.date-group input:focus {
    outline: none;
    border-color: #10b981;
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

.date-group button {
    margin-top: 20px;
}

.salary-info {
    background: #fff3cd;
    border: 1px solid #ffeaa7;
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 20px;
    color: #856404;
}

.salary-results {
    background: #ffffff;
    border-radius: 12px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
    overflow: hidden;
    border: 1px solid #e8eaed;
}

.salary-summary {
    background: #f0fdf4;
    padding: 20px;
    border-bottom: 1px solid #e8eaed;
}

.salary-teachers {
    padding: 0;
}

.teacher-item {
    padding: 20px;
    border-bottom: 1px solid #f0f0f0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.2s ease;
}

.teacher-item:hover {
    background: #f8f9fc;
}

.teacher-item:last-child {
    border-bottom: none;
}

.teacher-info {
    flex: 1;
}

.teacher-name {
    font-weight: bold;
    color: #333;
    font-size: 1.1em;
    margin-bottom: 5px;
}

.teacher-details {
    color: #666;
    font-size: 0.9em;
    line-height: 1.4;
}

.teacher-salary {
    text-align: right;
    color: #10b981;
    font-weight: bold;
    font-size: 1.2em;
    transition: all 0.3s ease;
}

.salary-highlight {
    animation: salaryPulse 0.8s ease-in-out;
    transform: scale(1.05);
    color: #28a745 !important;
}

@keyframes salaryPulse {
    0% {
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(40, 167, 69, 0.4);
    }
    50% {
        transform: scale(1.08);
        box-shadow: 0 0 0 8px rgba(40, 167, 69, 0.2);
    }
    100% {
        transform: scale(1.05);
        box-shadow: 0 0 0 0 rgba(40, 167, 69, 0);
    }
}

/* 学生排课日历弹窗样式 */
.schedule-tooltip {
    position: absolute;
    z-index: 1000;
    background: #ffffff;
    border: none;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15), 0 0 0 1px rgba(0, 0, 0, 0.05);
    padding: 0;
    width: 420px;
    max-height: 80vh;
    overflow: hidden;
    color: #333;
    display: none;
    font-size: 13px;
}

.schedule-tooltip .schedule-header {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    padding: 14px 16px;
    margin: 0;
    position: relative;
}

.schedule-tooltip .student-name {
    color: #ffffff !important;
    font-size: 16px;
    font-weight: 600;
    margin: 0;
}

.schedule-tooltip .schedule-content {
    padding: 0;
    max-height: calc(80vh - 50px);
    overflow-y: auto;
}

.tooltip-header {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
    padding: 24px 28px;
    font-weight: 700;
    font-size: 18px;
    position: relative;
}

.tooltip-header .student-name {
    color: white;
    font-size: 20px;
    margin: 0;
}

.tooltip-body {
    padding: 20px 24px 24px;
    max-height: calc(85vh - 80px);
    overflow-y: auto;
}

/* 日历样式 */
.schedule-calendar {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 4px;
    margin: 8px 0;
}

.calendar-day-header {
    text-align: center;
    padding: 12px 4px;
    font-size: 13px;
    font-weight: 600;
    color: #10b981;
    background: #f0fdf4;
    border-radius: 8px;
}

.calendar-day {
    aspect-ratio: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    border: 1px solid #e8eaed;
    border-radius: 8px;
    font-size: 11px;
    position: relative;
    min-height: 45px;
    padding: 4px;
    background: #fafafa;
    cursor: default;
    transition: all 0.2s ease;
}

.calendar-day:hover {
    background: #f0f2f5;
    border-color: #d1d5db;
}

.calendar-day.today {
    background: linear-gradient(135deg, #dbeafe 0%, #bfdbfe 100%);
    border-color: #3b82f6;
    font-weight: 600;
}

.calendar-day.has-class {
    background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%);
    border-color: #10b981;
    border-width: 2px;
}

.calendar-day-number {
    font-size: 12px;
    font-weight: 700;
    margin-bottom: 2px;
    line-height: 1;
    color: #374151;
}

.calendar-day.has-class .calendar-day-number {
    color: #059669;
}

.class-dots {
    display: flex;
    flex-wrap: wrap;
    gap: 2px;
    justify-content: center;
    align-items: center;
    max-width: 100%;
}

.class-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #10b981;
    flex-shrink: 0;
}

.class-time-text {
    font-size: 10px;
    color: #059669;
    text-align: center;
    line-height: 1.2;
    margin-top: 2px;
    max-width: 100%;
    font-weight: 500;
}

.class-time {
    font-size: 12px;
    color: #059669;
    text-align: center;
    line-height: 1.2;
    margin-top: 2px;
    font-weight: 600;
}

.class-teacher {
    font-size: 11px;
    color: #6b7280;
    text-align: center;
    line-height: 1.2;
    margin-top: 1px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    background: rgba(16, 185, 129, 0.1);
    padding: 2px 6px;
    border-radius: 4px;
}

.calendar-navigation {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    padding: 0;
}

.calendar-nav-btn {
    background: #f0fdf4;
    border: 1px solid #d1fae5;
    border-radius: 8px;
    padding: 8px 16px;
    cursor: pointer;
    font-size: 13px;
    color: #059669;
    font-weight: 500;
    transition: all 0.2s;
}

.calendar-nav-btn:hover {
    background: #dcfce7;
    border-color: #10b981;
    color: #047857;
}

.calendar-nav-btn:active {
    transform: scale(0.98);
}

.current-month {
    font-weight: 700;
    font-size: 16px;
    color: #1f2937;
}

.schedule-summary {
    margin-top: 16px;
    padding: 12px 16px;
    border-radius: 10px;
    background: #f9fafb;
    font-size: 13px;
    color: #6b7280;
    text-align: center;
    border: 1px solid #e5e7eb;
}

.schedule-header {
    margin-bottom: 12px;
}

.student-name {
    font-weight: bold;
    font-size: 16px;
    color: #10b981;
}

/* 课程日历表格样式 */
.schedule-list-container {
    padding: 16px;
}

.schedule-table {
    width: 100%;
    border-collapse: collapse;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    overflow: hidden;
    font-size: 12px;
}

.schedule-table thead tr {
    background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%);
}

.schedule-table th {
    padding: 10px 4px;
    text-align: center;
    font-weight: 600;
    font-size: 13px;
    color: #059669;
    border-bottom: 2px solid #10b981;
    border-right: 1px solid rgba(16, 185, 129, 0.2);
}

.schedule-table th:last-child {
    border-right: none;
}

.schedule-table td {
    border: 1px solid #e5e7eb;
    padding: 6px 4px;
    vertical-align: top;
    min-width: 50px;
    height: 70px;
    background: #fff;
}

.schedule-table td.empty {
    background: #f9fafb;
}

.schedule-table td.has-class {
    background: linear-gradient(180deg, #f0fdf4 0%, #ffffff 100%);
}

.schedule-table td.today {
    background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
    border: 2px solid #3b82f6;
}

.cell-date {
    font-size: 12px;
    font-weight: 700;
    color: #374151;
    text-align: center;
    margin-bottom: 4px;
}

.schedule-table td.has-class .cell-date {
    color: #059669;
}

.schedule-table td.today .cell-date {
    color: #2563eb;
}

.cell-classes {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.cell-class {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1px;
}

.cell-time {
    font-size: 11px;
    color: #059669;
    font-weight: 600;
}

.schedule-table td.today .cell-time {
    color: #2563eb;
}

.cell-teacher {
    font-size: 10px;
    color: #6b7280;
    background: rgba(16, 185, 129, 0.08);
    padding: 1px 4px;
    border-radius: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 100%;
}

.schedule-table td.today .cell-teacher {
    background: rgba(37, 99, 235, 0.08);
    color: #2563eb;
}

.cell-more {
    font-size: 9px;
    color: #9ca3af;
    text-align: center;
    font-style: italic;
}

.schedule-table td.today .cell-more {
    color: #60a5fa;
}

/* Loading 遮罩层 */
#loadingOverlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10000;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

.loading-content {
    background: white;
    border-radius: 16px;
    padding: 40px;
    text-align: center;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    max-width: 400px;
    width: 90%;
}

.loading-spinner {
    width: 60px;
    height: 60px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid #4CAF50;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

.loading-content h2 {
    margin: 0 0 10px 0;
    color: #333;
    font-size: 24px;
}

.loading-content p {
    margin: 0 0 20px 0;
    color: #666;
    font-size: 16px;
}

.loading-timer {
    background: #f8f9fa;
    padding: 15px;
    border-radius: 8px;
    color: #555;
    font-size: 14px;
}

#loadingCountdown {
    font-weight: bold;
    color: #4CAF50;
    font-size: 18px;
}