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

html, body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    font-size: 14px;
    line-height: 1.6;
    color: #333;
    background: #f5f5f5;
    height: 100%;
}

/* 链接样式 */
a {
    color: #1890ff;
    text-decoration: none;
}

a:hover {
    color: #40a9ff;
}

/* 按钮基础样式 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px 16px;
    font-size: 14px;
    border-radius: 6px;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-primary {
    background: #1890ff;
    color: #fff;
}

.btn-primary:hover {
    background: #40a9ff;
}

.btn-secondary {
    background: #f5f5f5;
    color: #666;
    border: 1px solid #d9d9d9;
}

.btn-secondary:hover {
    background: #e6e6e6;
}

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

/* 表单基础样式 */
.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 10px 12px;
    font-size: 14px;
    border: 1px solid #d9d9d9;
    border-radius: 6px;
    transition: border-color 0.3s;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: #1890ff;
    box-shadow: 0 0 0 2px rgba(24, 144, 255, 0.1);
}

/* 卡片样式 */
.card {
    background: #fff;
    border-radius: 8px;
    padding: 24px;
    margin-bottom: 20px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.card-title {
    font-size: 16px;
    font-weight: 600;
    color: #333;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid #f0f0f0;
}

/* 加载状态 */
.loading {
    text-align: center;
    padding: 20px;
    color: #999;
}

.loading::before {
    content: '';
    display: inline-block;
    width: 16px;
    height: 16px;
    margin-right: 8px;
    border: 2px solid #f3f3f3;
    border-top-color: #1890ff;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* 提示信息 */
.hint {
    font-size: 12px;
    color: #999;
    margin-top: 4px;
}

/* 徽章 */
.badge {
    display: inline-block;
    padding: 2px 8px;
    font-size: 12px;
    border-radius: 4px;
}

.badge-success {
    background: #f6ffed;
    color: #52c41a;
}

.badge-error {
    background: #fff2f0;
    color: #ff4d4f;
}

.badge-warning {
    background: #fffbe6;
    color: #faad14;
}

/* 表单验证 */
.form-error {
    border-color: #ff4d4f !important;
}

.error-message {
    color: #ff4d4f;
    font-size: 12px;
    margin-top: 4px;
}

/* 响应式 */
@media (max-width: 768px) {
    .form-row {
        flex-direction: column;
    }
    
    .form-row .form-group {
        width: 100%;
    }
}

/* 工具类 */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: #999; }
.text-success { color: #52c41a; }
.text-error { color: #ff4d4f; }
.mt-10 { margin-top: 10px; }
.mt-20 { margin-top: 20px; }
.mb-10 { margin-bottom: 10px; }
.mb-20 { margin-bottom: 20px; }