/* 基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f5f5f5;
    color: #333;
    line-height: 1.6;
}

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

/* 头部导航 */
.header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 1rem 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    color: white;
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 5px;
    transition: background-color 0.3s;
}

.nav-menu a:hover {
    background-color: rgba(255,255,255,0.2);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* 主要内容区域 */
.main-content {
    padding: 2rem 0;
    min-height: calc(100vh - 120px);
}

/* 卡片样式 */
.card {
    background: white;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    transition: transform 0.3s, box-shadow 0.3s;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 15px rgba(0,0,0,0.15);
}

.card-header {
    border-bottom: 1px solid #eee;
    padding-bottom: 1rem;
    margin-bottom: 1rem;
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: #333;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 5px;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 0.9rem;
    font-weight: 500;
}

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

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(102, 126, 234, 0.3);
}

.btn-secondary {
    background-color: #6c757d;
    color: white;
}

.btn-secondary:hover {
    background-color: #5a6268;
}

.btn-success {
    background-color: #28a745;
    color: white;
}

.btn-success:hover {
    background-color: #218838;
}

.btn-danger {
    background-color: #dc3545;
    color: white;
}

.btn-danger:hover {
    background-color: #c82333;
}

.btn-sm {
    padding: 0.25rem 0.5rem;
    font-size: 0.8rem;
}

/* 表单样式 */
.form-group {
    margin-bottom: 1rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: #555;
}

.form-control {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 0.9rem;
    transition: border-color 0.3s, box-shadow 0.3s;
}

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

.form-control.is-invalid {
    border-color: #dc3545;
}

.invalid-feedback {
    color: #dc3545;
    font-size: 0.8rem;
    margin-top: 0.25rem;
}

/* 表格样式 */
.table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.table th,
.table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid #eee;
}

.table th {
    background-color: #f8f9fa;
    font-weight: 600;
    color: #495057;
}

.table tbody tr:hover {
    background-color: #f8f9fa;
}

/* 进度条样式 */
.progress {
    background-color: #e9ecef;
    border-radius: 10px;
    height: 20px;
    overflow: hidden;
    margin: 1rem 0;
}

.progress-bar {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    height: 100%;
    border-radius: 10px;
    transition: width 0.6s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 0.8rem;
    font-weight: 500;
}

/* 进度阶段标签 */
.progress-stages {
    display: flex;
    justify-content: space-between;
    margin: 1rem 0;
    position: relative;
}

.progress-stages::before {
    content: '';
    position: absolute;
    top: 15px;
    left: 0;
    right: 0;
    height: 2px;
    background-color: #e9ecef;
    z-index: 1;
}

.progress-stage {
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    z-index: 2;
}

.stage-indicator {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background-color: #e9ecef;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: bold;
    color: #6c757d;
    margin-bottom: 0.5rem;
    transition: all 0.3s;
}

.stage-indicator.completed {
    background-color: #28a745;
    color: white;
}

.stage-indicator.current {
    background-color: #667eea;
    color: white;
    transform: scale(1.2);
}

.stage-label {
    font-size: 0.8rem;
    color: #6c757d;
    text-align: center;
    max-width: 80px;
}

/* 状态标签 */
.status-badge {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 500;
}

.status-active {
    background-color: #d1ecf1;
    color: #0c5460;
}

.status-completed {
    background-color: #d4edda;
    color: #155724;
}

.status-paused {
    background-color: #fff3cd;
    color: #856404;
}

/* 警告框 */
.alert {
    padding: 1rem;
    border-radius: 5px;
    margin-bottom: 1rem;
    border: 1px solid transparent;
}

.alert-success {
    background-color: #d4edda;
    border-color: #c3e6cb;
    color: #155724;
}

.alert-danger {
    background-color: #f8d7da;
    border-color: #f5c6cb;
    color: #721c24;
}

.alert-warning {
    background-color: #fff3cd;
    border-color: #ffeaa7;
    color: #856404;
}

.alert-info {
    background-color: #d1ecf1;
    border-color: #bee5eb;
    color: #0c5460;
}

/* 登录页面 */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.login-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    width: 100%;
    max-width: 400px;
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-header h2 {
    color: #333;
    margin-bottom: 0.5rem;
}

.login-header p {
    color: #6c757d;
    font-size: 0.9rem;
}

/* 仪表板统计 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: white;
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    text-align: center;
    transition: transform 0.3s;
}

.stat-card:hover {
    transform: translateY(-2px);
}

.stat-number {
    font-size: 2rem;
    font-weight: bold;
    color: #667eea;
    margin-bottom: 0.5rem;
}

.stat-label {
    color: #6c757d;
    font-size: 0.9rem;
}

/* 置顶按钮样式 */
.btn-outline-warning {
    background-color: transparent;
    color: #ffc107;
    border: 1px solid #ffc107;
}

.btn-outline-warning:hover {
    background-color: #ffc107;
    color: white;
}

.btn-warning {
    background-color: #ffc107;
    color: white;
    border: 1px solid #ffc107;
}

.btn-warning:hover {
    background-color: #e0a800;
    border-color: #e0a800;
}

/* 星星图标样式 */
.star-icon {
    color: #ffc107;
    font-size: 1.2rem;
    text-shadow: 0 0 2px rgba(0,0,0,0.2);
}

.star-icon:hover {
    color: #ff9800;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .header .container {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav-menu {
        gap: 1rem;
    }
    
    .nav-menu a {
        padding: 0.5rem;
    }
    
    .user-info {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .main-content {
        padding: 1rem 0;
    }
    
    .card {
        padding: 1rem;
    }
    
    .table {
        font-size: 0.8rem;
    }
    
    .table th,
    .table td {
        padding: 0.5rem;
    }
    
    .progress-stages {
        flex-direction: column;
        gap: 1rem;
    }
    
    .progress-stages::before {
        display: none;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .login-card {
        margin: 1rem;
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 10px;
    }
    
    .nav-menu {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .btn {
        padding: 0.4rem 0.8rem;
        font-size: 0.8rem;
    }
    
    .form-control {
        padding: 0.5rem;
    }
}