/* ==================== 全局样式 ==================== */

:root {
    --primary-color: #0d6efd;
    --secondary-color: #6c757d;
    --success-color: #198754;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #0dcaf0;
    --light-color: #f8f9fa;
    --dark-color: #212529;
    --white-color: #ffffff;
    --border-radius: 0.375rem;
    --box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    --transition: all 0.15s ease-in-out;
}

* {
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: var(--dark-color);
    background-color: var(--light-color);
}

/* ==================== 导航栏样式 ==================== */

.navbar {
    box-shadow: var(--box-shadow);
    padding: 0.5rem 0;
}

.navbar-brand {
    font-weight: 600;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.navbar-nav .nav-link {
    font-weight: 500;
    transition: var(--transition);
    padding: 0.5rem 0.75rem;
}

.navbar-nav .nav-link:hover {
    color: var(--primary-color) !important;
    opacity: 0.8;
}

.navbar-nav .nav-link.active {
    color: var(--primary-color) !important;
    font-weight: 600;
}

/* 导航栏响应式优化 */
.navbar-expand-lg .navbar-nav {
    align-items: center;
}

.navbar-expand-lg .navbar-nav .nav-item {
    margin-right: 0.25rem;
}

/* 下拉菜单优化 */
.navbar-nav .dropdown-menu {
    margin-top: 0.25rem;
    border: none;
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
    border-radius: var(--border-radius);
}

.navbar-nav .dropdown-item {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
}

.navbar-nav .dropdown-item:hover {
    background-color: var(--light-color);
}

/* 导航栏容器优化 */
.navbar .container {
    max-width: 1400px;
}

/* 移动端导航栏优化 */
@media (max-width: 992px) {
    .navbar-nav .nav-link {
        padding: 0.75rem 1rem;
        border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    }

    .navbar-nav .dropdown-menu {
        border: none;
        box-shadow: none;
        background-color: rgba(0, 0, 0, 0.02);
        margin-top: 0;
    }

    .navbar-nav .dropdown-item {
        padding: 0.5rem 2rem;
    }
}

/* ==================== 卡片样式 ==================== */

.card {
    border: none;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.card:hover {
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
    transform: translateY(-2px);
}

.card-header {
    background-color: var(--white-color);
    border-bottom: 1px solid rgba(0, 0, 0, 0.125);
    font-weight: 600;
}

.card-body {
    padding: 1.5rem;
}

/* ==================== 表单样式 ==================== */

.form-control {
    border-radius: var(--border-radius);
    border: 1px solid #ced4da;
    transition: var(--transition);
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.25);
}

.form-label {
    font-weight: 500;
    color: var(--dark-color);
    margin-bottom: 0.5rem;
}

.form-text {
    color: var(--secondary-color);
    font-size: 0.875rem;
}

/* ==================== 按钮样式 ==================== */

.btn {
    border-radius: var(--border-radius);
    font-weight: 500;
    transition: var(--transition);
    border: none;
    padding: 0.5rem 1rem;
}

.btn-primary {
    background-color: var(--primary-color);
    color: var(--white-color);
}

.btn-primary:hover {
    background-color: #0b5ed7;
    transform: translateY(-1px);
}

.btn-outline-primary {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.btn-outline-primary:hover {
    background-color: var(--primary-color);
    color: var(--white-color);
}

.btn-success {
    background-color: var(--success-color);
    color: var(--white-color);
}

.btn-success:hover {
    background-color: #157347;
}

/* ==================== 进度条样式 ==================== */

.progress {
    height: 0.5rem;
    border-radius: var(--border-radius);
    background-color: #e9ecef;
}

.progress-bar {
    background-color: var(--primary-color);
    border-radius: var(--border-radius);
    transition: width 0.6s ease;
}

/* ==================== 工具头部样式 ==================== */

.tool-header {
    display: flex;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid #e9ecef;
}

.tool-header-icon {
    font-size: 2rem;
    color: var(--primary-color);
    margin-right: 1rem;
}

.tool-header-text h2 {
    margin: 0;
    color: var(--dark-color);
    font-weight: 600;
}

.tool-header-text p {
    margin: 0.25rem 0 0 0;
    color: var(--secondary-color);
}

/* ==================== 文件上传区域样式 ==================== */

.file-upload-area {
    border: 2px dashed #ced4da;
    border-radius: var(--border-radius);
    padding: 2rem;
    text-align: center;
    transition: var(--transition);
    background-color: var(--white-color);
}

.file-upload-area:hover {
    border-color: var(--primary-color);
    background-color: rgba(13, 110, 253, 0.05);
}

.file-upload-area.dragover {
    border-color: var(--primary-color);
    background-color: rgba(13, 110, 253, 0.1);
}

.file-upload-icon {
    font-size: 3rem;
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

/* ==================== 结果区域样式 ==================== */

.result-area {
    margin-top: 1.5rem;
    padding: 1rem;
    background-color: var(--white-color);
    border-radius: var(--border-radius);
    border: 1px solid #e9ecef;
}

.result-text {
    font-family: 'Courier New', monospace;
    background-color: var(--light-color);
    padding: 1rem;
    border-radius: var(--border-radius);
    border: 1px solid #dee2e6;
    max-height: 300px;
    overflow-y: auto;
}

/* ==================== 使用说明样式 ==================== */

.usage-info {
    background-color: var(--light-color);
    border-left: 4px solid var(--primary-color);
    padding: 1rem;
    margin-top: 1rem;
}

.usage-info h5 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.usage-info ul {
    margin-bottom: 0;
}

.usage-info li {
    margin-bottom: 0.25rem;
}

/* ==================== 响应式设计 ==================== */

@media (max-width: 768px) {
    .card-body {
        padding: 1rem;
    }

    .tool-header {
        flex-direction: column;
        text-align: center;
    }

    .tool-header-icon {
        margin-right: 0;
        margin-bottom: 0.5rem;
    }

    .file-upload-area {
        padding: 1rem;
    }

    .file-upload-icon {
        font-size: 2rem;
    }
}

/* ==================== 动画效果 ==================== */

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

.fade-in {
    animation: fadeIn 0.5s ease-out;
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

.spinner {
    animation: spin 1s linear infinite;
}

/* ==================== 工具提示样式 ==================== */

.tooltip {
    position: relative;
    display: inline-block;
}

.tooltip .tooltiptext {
    visibility: hidden;
    width: 200px;
    background-color: var(--dark-color);
    color: var(--white-color);
    text-align: center;
    border-radius: var(--border-radius);
    padding: 0.5rem;
    position: absolute;
    z-index: 1;
    bottom: 125%;
    left: 50%;
    margin-left: -100px;
    opacity: 0;
    transition: opacity 0.3s;
}

.tooltip:hover .tooltiptext {
    visibility: visible;
    opacity: 1;
}

/* ==================== 状态指示器样式 ==================== */

.status-indicator {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-right: 0.5rem;
}

.status-success {
    background-color: var(--success-color);
}

.status-error {
    background-color: var(--danger-color);
}

.status-warning {
    background-color: var(--warning-color);
}

.status-info {
    background-color: var(--info-color);
}

/* ==================== 加载状态样式 ==================== */

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 5px solid var(--light-color);
    border-top: 5px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* ==================== 打印样式 ==================== */

@media print {
    .navbar,
    .btn,
    .file-upload-area,
    .usage-info {
        display: none !important;
    }

    .card {
        box-shadow: none;
        border: 1px solid #000;
    }

    body {
        background-color: white;
    }
}

/* ==================== 页脚样式 ==================== */

/* Footer紧凑布局 */
.footer-content {
    display: flex;
    align-items: center; /* 垂直居中对齐 */
    justify-content: space-between;
    padding: 1.5rem 0;
}

.footer-left {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 2rem; /* 应用名称和链接之间的间距 */
}

.footer-right {
    flex: 0 0 auto;
    text-align: right;
}

.footer-left h5 {
    margin: 0;
    color: #2d3748;
    font-weight: 600;
    font-size: 1.1rem;
    white-space: nowrap;
}

.footer-links-inline {
    display: flex;
    gap: 1.5rem; /* 链接之间的间距 */
}

.footer-links-inline a {
    color: #667eea;
    text-decoration: underline;
    font-size: 0.9rem;
    transition: color 0.3s ease;
    white-space: nowrap;
}

.footer-links-inline a:hover {
    color: #4c51bf;
}

.footer-copyright {
    text-align: right;
}

.footer-copyright .copyright {
    color: #2d3748;
    font-size: 0.9rem;
    margin: 0 0 0.25rem 0;
}

.footer-copyright .icp-info {
    margin: 0;
}

.footer-copyright .icp-link {
    color: #667eea;
    text-decoration: underline;
    font-size: 0.8rem;
    transition: color 0.3s ease;
}

.footer-copyright .icp-link:hover {
    color: #4c51bf;
}

/* 响应式页脚优化 */
@media (max-width: 768px) {
    .footer-content {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
        padding: 1rem 0;
    }
    
    .footer-left {
        flex-direction: column;
        gap: 1rem;
        align-items: center;
    }
    
    .footer-right {
        text-align: center;
    }
    
    .footer-copyright {
        text-align: center;
    }
    
    .footer-links-inline {
        gap: 1rem;
        flex-wrap: wrap;
        justify-content: center;
    }
}