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

body {
    font-family: 'Microsoft YaHei', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

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

/* 导航栏样式 */
.navbar {
    background-color: #1890ff;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 60px;
}

.nav-logo h2 {
    color: white;
    font-size: 20px;
    font-weight: 600;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-link {
    color: white;
    text-decoration: none;
    font-size: 16px;
    padding: 8px 16px;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
    background-color: rgba(255,255,255,0.2);
    transform: translateY(-1px);
}

/* 汉堡菜单 */
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background-color: white;
    margin: 3px 0;
    transition: 0.3s;
}

/* 主要内容区域 */
.main-content {
    margin-top: 60px;
}

/* 页面布局 */
.page-container {
    display: flex;
    min-height: calc(100vh - 60px);
    gap: 20px;
    padding: 20px;
}

.left-panel,
.right-panel {
    flex: 1;
    width: 50%;
    min-width: 0;
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    padding: 30px;
}

.panel-title {
    font-size: 24px;
    color: #1890ff;
    margin-bottom: 20px;
    text-align: center;
    border-bottom: 2px solid #f0f0f0;
    padding-bottom: 15px;
}

/* 文件上传区域 */
.upload-area {
    border: 2px dashed #d9d9d9;
    border-radius: 8px;
    padding: 40px 20px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    background-color: #fafafa;
}

.upload-area:hover {
    border-color: #1890ff;
    background-color: #f0f8ff;
}

.upload-area.dragover {
    border-color: #1890ff;
    background-color: #e6f7ff;
}

.upload-icon {
    font-size: 48px;
    color: #d9d9d9;
    margin-bottom: 16px;
}

.upload-text {
    font-size: 16px;
    color: #666;
    margin-bottom: 8px;
}

.upload-hint {
    font-size: 14px;
    color: #999;
}

.file-input {
    display: none;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 10px 20px;
    background-color: #1890ff;
    color: white;
    text-decoration: none;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.3s ease;
}

.btn:hover {
    background-color: #40a9ff;
    transform: translateY(-1px);
}

.btn:active {
    transform: translateY(0);
}

.btn-secondary {
    background-color: #f5f5f5;
    color: #333;
}

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

/* 结果展示区域 */
.result-area {
    background-color: #f9f9f9;
    border-radius: 8px;
    padding: 20px;
    min-height: 200px;
    border: 1px solid #e8e8e8;
    overflow: hidden;
}

.result-empty {
    text-align: center;
    color: #999;
    padding: 40px 20px;
}

.result-empty svg {
    margin-bottom: 15px;
}

.result-loading {
    text-align: center;
    padding: 40px 20px;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid #1890ff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 15px;
}

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

.result-success {
    background-color: #f6ffed;
    border: 1px solid #b7eb8f;
    border-radius: 6px;
    padding: 15px;
    color: #52c41a;
}

.result-success p {
    margin: 0;
    line-height: 1.6;
}

.result-data {
    background-color: white;
    border-radius: 4px;
    padding: 10px;
    margin-top: 10px;
}

.result-item {
    padding: 8px 0;
    border-bottom: 1px solid #f0f0f0;
    color: #333;
}

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

.result-item strong {
    color: #1890ff;
    margin-right: 8px;
}

.result-error {
    text-align: center;
    padding: 30px 20px;
    background-color: #fff2f0;
    border: 1px solid #ffccc7;
    border-radius: 6px;
    color: #ff4d4f;
}

.result-error svg {
    margin-bottom: 15px;
}

.result-error p {
    margin: 0;
    font-size: 16px;
}

.result-title {
    font-size: 18px;
    color: #1890ff;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.result-content {
    font-size: 16px;
    line-height: 1.8;
    color: #333;
    word-wrap: break-word;
    word-break: break-word;
    overflow-wrap: break-word;
}

.result-empty {
    text-align: center;
    color: #999;
    font-style: italic;
    padding: 40px 0;
}

/* 加载状态 */
.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 20px;
    color: #1890ff;
}

.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid #f3f3f3;
    border-top: 2px solid #1890ff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* 页脚 */
.footer {
    background-color: #333;
    color: white;
    text-align: center;
    padding: 20px 0;
    margin-top: auto;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 60px;
        flex-direction: column;
        background-color: #1890ff;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0,0,0,0.05);
        padding: 20px 0;
        gap: 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-item {
        margin: 10px 0;
    }

    .hamburger {
        display: flex;
    }

    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .page-container {
        flex-direction: column;
        padding: 10px;
    }

    .container {
        padding: 0 15px;
    }

    .left-panel,
    .right-panel {
        padding: 20px;
    }
}

@media (max-width: 480px) {
    .nav-logo h2 {
        font-size: 18px;
    }

    .panel-title {
        font-size: 20px;
    }

    .upload-area {
        padding: 30px 15px;
    }

    .upload-icon {
        font-size: 36px;
    }

    .left-panel,
    .right-panel {
        padding: 15px;
    }
}

/* 工具类 */
.text-center {
    text-align: center;
}

.mt-20 {
    margin-top: 20px;
}

.mb-20 {
    margin-bottom: 20px;
}

.hidden {
    display: none;
}

.success {
    color: #52c41a;
}

.error {
    color: #ff4d4f;
}

.warning {
    color: #faad14;
}