/* 统计卡片 */
.stat-card {
    background: white;
    padding: 25px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: 20px;
}

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
}

.stat-icon.blue { background: #e3f2fd; color: #1976d2; }
.stat-icon.green { background: #e8f5e9; color: #388e3c; }
.stat-icon.orange { background: #fff3e0; color: #f57c00; }
.stat-icon.purple { background: #f3e5f5; color: #7b1fa2; }

.stat-info h3 {
    margin: 0;
    font-size: 28px;
    font-weight: 700;
}

.stat-info p {
    margin: 0;
    color: #666;
    font-size: 14px;
}

/* 登录页面 */
.login-page {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #1a5f2a 0%, #2d8a3e 50%, #4CAF50 100%);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
}

.login-box {
    background: white;
    padding: 40px 45px;
    border-radius: 20px;
    width: 100%;
    max-width: 420px;
    box-shadow: 0 25px 80px rgba(0,0,0,0.3);
}

.login-box h2 {
    text-align: center;
    margin-bottom: 35px;
    color: var(--primary-color);
    font-size: 26px;
    font-weight: 600;
}

.login-box .form-label {
    font-weight: 500;
    color: #333;
    margin-bottom: 8px;
    font-size: 14px;
}

.login-box .form-control {
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    padding: 12px 16px;
    font-size: 15px;
    transition: all 0.3s;
}

.login-box .form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(44, 95, 45, 0.15);
}

.login-box .btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, #3d8b40 100%);
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    margin-top: 10px;
    transition: all 0.3s;
}

.login-box .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(44, 95, 45, 0.4);
}

/* 弹窗样式优化 */
.modal-lg {
    max-width: 800px;
}

.modal-header {
    background: #f8f9fa;
    border-bottom: 1px solid #dee2e6;
}

.modal-title {
    color: var(--primary-color);
    font-weight: 600;
}

.form-label {
    font-weight: 500;
    color: #555;
}

.form-text {
    font-size: 12px;
    color: #888;
}

/* 图片预览 */
#activityImagePreview {
    border-radius: 8px;
    border: 1px solid #ddd;
    padding: 5px;
}