/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: #333;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* 头部样式 */
.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    padding: 20px 30px;
    margin-bottom: 30px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.header h1 {
    color: #4a5568;
    font-size: 2rem;
    font-weight: 700;
}

.header h1 i {
    color: #667eea;
    margin-right: 10px;
}

.header-actions {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

/* 按钮样式 */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
    background: #f7fafc;
    color: #4a5568;
    border: 2px solid #e2e8f0;
}

.btn-secondary:hover {
    background: #edf2f7;
    border-color: #cbd5e0;
}

.btn-outline {
    background: transparent;
    color: #667eea;
    border: 2px solid #667eea;
}

.btn-outline:hover {
    background: #667eea;
    color: white;
}

.btn-success {
    background: #48bb78;
    color: white;
}

.btn-success:hover {
    background: #38a169;
}

.btn-danger {
    background: #f56565;
    color: white;
}

.btn-danger:hover {
    background: #e53e3e;
}

.btn-sm {
    padding: 8px 16px;
    font-size: 12px;
}

/* 主要内容区域 */
.main-content {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 30px;
    align-items: start;
}

/* 任务区域 */
.task-section {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

.task-section h2 {
    color: #4a5568;
    margin-bottom: 25px;
    font-size: 1.5rem;
}

.task-filters {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.task-exclusions {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 25px;
    flex-wrap: wrap;
    padding: 12px 16px;
    background: rgba(103, 126, 234, 0.08);
    border-radius: 10px;
}

.exclusion-label {
    color: #4a5568;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.filter-btn {
    min-width: 90px;
}

.filter-btn.active {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #ffffff;
    border-color: transparent;
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.35);
}

.exclusion-btn {
    min-width: 80px;
    border-color: #cbd5e0;
    color: #4a5568;
}

.exclusion-btn.active {
    background: #f56565;
    border-color: #f56565;
    color: #ffffff;
    box-shadow: 0 6px 20px rgba(245, 101, 101, 0.3);
}

.task-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

/* 任务项样式 */
.task-item {
    background: #f8fafc;
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    padding: 20px;
    transition: all 0.3s ease;
    position: relative;
}

.task-item:hover {
    border-color: #667eea;
    box-shadow: 0 4px 20px rgba(102, 126, 234, 0.1);
}

.task-item.in-progress {
    border-color: #48bb78;
    background: linear-gradient(135deg, #f0fff4 0%, #e6fffa 100%);
}

.task-item.completed {
    border-color: #a0aec0;
    background: #f7fafc;
    opacity: 0.8;
}

.task-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 15px;
}

.task-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: #2d3748;
    margin-bottom: 5px;
}

.task-status {
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
}

.task-status.pending {
    background: #fed7d7;
    color: #c53030;
}

.task-status.in-progress {
    background: #c6f6d5;
    color: #2f855a;
}

.task-status.completed {
    background: #e2e8f0;
    color: #4a5568;
}

.task-description {
    color: #718096;
    line-height: 1.6;
    margin-bottom: 15px;
    white-space: pre-wrap; /* 保留换行和空格 */
    word-wrap: break-word; /* 长单词自动换行 */
}

.task-description.polished {
    background: #f0f9ff;
    padding: 10px;
    border-radius: 8px;
    border-left: 4px solid #667eea;
}

.task-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.task-timer {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px solid #e2e8f0;
}

.timer-display {
    font-family: 'Courier New', monospace;
    font-size: 1.5rem;
    font-weight: bold;
    color: #2d3748;
    background: #f7fafc;
    padding: 8px 16px;
    border-radius: 8px;
    border: 2px solid #e2e8f0;
}

.timer-controls {
    display: flex;
    gap: 8px;
}

.task-stats {
    display: flex;
    gap: 20px;
    margin-top: 10px;
    font-size: 14px;
    color: #718096;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 5px;
}

/* 统计面板 */
.stats-panel {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    padding: 25px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 20px;
}

.stats-panel h3 {
    color: #4a5568;
    margin-bottom: 20px;
    font-size: 1.3rem;
}

.stats-card {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.stat-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid #e2e8f0;
}

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

.stat-label {
    color: #718096;
    font-size: 14px;
}

.stat-value {
    font-size: 1.2rem;
    font-weight: 700;
    color: #2d3748;
}

/* 模态框样式 */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
}

.modal-content {
    background: white;
    margin: 5% auto;
    padding: 0;
    border-radius: 15px;
    width: 90%;
    max-width: 600px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: modalSlideIn 0.3s ease;
}

.modal-content.large {
    max-width: 800px;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-header {
    padding: 25px 30px;
    border-bottom: 1px solid #e2e8f0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    color: #2d3748;
    font-size: 1.5rem;
}

.close {
    color: #a0aec0;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    transition: color 0.3s ease;
}

.close:hover {
    color: #4a5568;
}

.modal-body {
    padding: 30px;
    max-height: calc(100vh - 300px); /* 留出顶部和底部空间 */
    overflow-y: auto; /* 内容过多时显示滚动条 */
}

.modal-footer {
    padding: 20px 30px;
    border-top: 1px solid #e2e8f0;
    display: flex;
    justify-content: flex-end;
    gap: 15px;
}

/* 表单样式 */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #4a5568;
    font-weight: 600;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    font-size: 14px;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
    max-height: 300px; /* 限制最大高度，避免占用过多空间 */
}

.form-actions {
    margin-top: 10px;
}

.polished-content {
    margin-top: 15px;
    padding: 15px;
    background: #f0f9ff;
    border-radius: 8px;
    border: 1px solid #bee3f8;
}

.polished-content h4 {
    color: #2b6cb0;
    margin-bottom: 10px;
    font-size: 14px;
}

.polished-text {
    color: #2d3748;
    line-height: 1.6;
    margin-bottom: 15px;
    padding: 10px;
    background: white;
    border-radius: 6px;
    border: 1px solid #e2e8f0;
    max-height: 200px; /* 限制润色文本的最大高度 */
    overflow-y: auto; /* 内容过多时显示滚动条 */
    white-space: pre-wrap; /* 保留换行和空格 */
    word-wrap: break-word; /* 长单词自动换行 */
}

.polished-actions {
    display: flex;
    gap: 10px;
}

/* 报表样式 */
.report-controls {
    display: flex;
    gap: 15px;
    align-items: end;
    margin-bottom: 25px;
    padding: 20px;
    background: #f8fafc;
    border-radius: 8px;
}

/* 历史记录样式 */
.history-controls {
    display: flex;
    gap: 15px;
    align-items: end;
    margin-bottom: 25px;
    padding: 20px;
    background: #f8fafc;
    border-radius: 8px;
    flex-wrap: wrap;
}

.history-content {
    max-height: 600px;
    overflow-y: auto;
}

.history-day {
    margin-bottom: 25px;
    padding: 20px;
    background: #f8fafc;
    border-radius: 8px;
    border-left: 4px solid #667eea;
}

.history-day h4 {
    color: #2d3748;
    margin-bottom: 15px;
    font-size: 1.1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.day-total-time {
    color: #667eea;
    font-weight: 600;
    font-family: 'Courier New', monospace;
}

.history-task {
    margin-bottom: 20px;
    padding: 15px;
    background: white;
    border-radius: 8px;
    border: 1px solid #e2e8f0;
}

.history-task-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 1px solid #e2e8f0;
}

.history-task-title {
    color: #2d3748;
    font-weight: 600;
    font-size: 1.1rem;
}

.history-task-total {
    color: #667eea;
    font-weight: 600;
    font-family: 'Courier New', monospace;
}

.time-segments {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.time-segment {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 15px;
    background: #f7fafc;
    border-radius: 6px;
    border: 1px solid #e2e8f0;
    transition: all 0.2s ease;
}

.time-segment:hover {
    background: #edf2f7;
    border-color: #cbd5e0;
}

.segment-time {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 4px;
}

.segment-duration {
    color: #667eea;
    font-weight: 600;
    font-family: 'Courier New', monospace;
    font-size: 1.1rem;
}

.segment-period {
    color: #718096;
    font-size: 0.9rem;
}

.segment-timespan {
    color: #4a5568;
    font-size: 0.9rem;
}

/* 空状态样式 */
.history-empty {
    text-align: center;
    padding: 60px 20px;
    color: #a0aec0;
}

.history-empty i {
    font-size: 3rem;
    margin-bottom: 15px;
    display: block;
}

.history-empty h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
}

.history-empty p {
    font-size: 1rem;
}

.report-content {
    max-height: 500px;
    overflow-y: auto;
}

.report-day {
    margin-bottom: 25px;
    padding: 20px;
    background: #f8fafc;
    border-radius: 8px;
    border-left: 4px solid #667eea;
}

.report-day h4 {
    color: #2d3748;
    margin-bottom: 15px;
    font-size: 1.1rem;
}

.report-task {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    border-bottom: 1px solid #e2e8f0;
}

.report-task:last-child {
    border-bottom: none;
}

.report-task-title {
    color: #4a5568;
    font-weight: 500;
}

.report-task-time {
    color: #667eea;
    font-weight: 600;
    font-family: 'Courier New', monospace;
}

/* 加载提示 */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(5px);
    z-index: 2000;
    display: flex;
    justify-content: center;
    align-items: center;
}

.loading-spinner {
    text-align: center;
    color: #667eea;
}

.loading-spinner i {
    font-size: 2rem;
    margin-bottom: 15px;
    display: block;
}

.loading-spinner span {
    font-size: 1.1rem;
    font-weight: 600;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .main-content {
        grid-template-columns: 1fr;
    }
    
    .header {
        flex-direction: column;
        text-align: center;
    }
    
    .header-actions {
        justify-content: center;
    }
    
    .task-header {
        flex-direction: column;
        gap: 10px;
    }
    
    .task-actions {
        justify-content: center;
    }
    
    .timer-controls {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .modal-content {
        margin: 10% auto;
        width: 95%;
    }
    
    .report-controls {
        flex-direction: column;
        align-items: stretch;
    }
}

/* 空状态样式 */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: #a0aec0;
}

.empty-state i {
    font-size: 4rem;
    margin-bottom: 20px;
    display: block;
}

.empty-state h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
}

.empty-state p {
    font-size: 1rem;
}

/* 动画效果 */
.fade-in {
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.slide-in {
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from { transform: translateX(-100%); }
    to { transform: translateX(0); }
}

/* 登录页面样式 */
.login-page {
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.login-container {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 40px;
    width: 100%;
    max-width: 450px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: modalSlideIn 0.5s ease;
}

.login-header {
    text-align: center;
    margin-bottom: 30px;
}

.login-header i {
    font-size: 3rem;
    color: #667eea;
    margin-bottom: 15px;
    display: block;
}

.login-header h1 {
    color: #2d3748;
    font-size: 1.8rem;
    font-weight: 700;
    margin: 0;
}

.login-form {
    display: flex;
    flex-direction: column;
}

.login-form .form-group {
    margin-bottom: 20px;
}

.login-form label {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
    color: #4a5568;
    font-weight: 600;
}

.login-form label i {
    color: #667eea;
}

.btn-block {
    width: 100%;
    justify-content: center;
    margin-top: 10px;
}

.error-message {
    background: #fed7d7;
    color: #c53030;
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 15px;
    font-size: 14px;
    border: 1px solid #fc8181;
}

/* 用户信息显示 */
.user-info {
    display: flex;
    align-items: center;
    gap: 8px;
    color: #4a5568;
    font-weight: 600;
    padding: 8px 16px;
    background: #f7fafc;
    border-radius: 8px;
    border: 2px solid #e2e8f0;
}

.user-info i {
    color: #667eea;
    font-size: 1.2rem;
}