/* 全局样式 */
:root {
    --primary-color: #0d6efd;
    --secondary-color: #6c757d;
    --success-color: #198754;
    --info-color: #0dcaf0;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --light-color: #f8f9fa;
    --dark-color: #212529;
    --border-radius: 12px;
    --box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    --transition: all 0.3s ease;
}

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

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    color: var(--dark-color);
}

a {
    text-decoration: none;
    color: var(--primary-color);
    transition: color 0.2s;
}

a:hover {
    color: #0a58ca;
}

/* 导航栏样式 */
.navbar {
    padding: 1rem 0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    background: linear-gradient(135deg, var(--primary-color), #0b5ed7) !important;
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.navbar-nav .nav-link {
    font-weight: 500;
    padding: 0.5rem 1rem;
}

.navbar-nav .nav-link:hover {
    color: rgba(255, 255, 255, 0.8) !important;
}

/* 工具卡片样式 */
.tool-card {
    transition: var(--transition);
    border: none;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    margin-bottom: 1rem;
}

.tool-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.card-body {
    padding: 1.5rem;
}

.card-title {
    color: var(--dark-color);
    font-weight: 600;
}

.card-footer {
    background: transparent;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
    padding: 1rem 1.5rem;
}

/* 主页面标题 */
.display-4 {
    color: #1c2331;
    font-weight: 700;
}

.lead {
    color: #6c757d;
    font-size: 1.2rem;
}

/* 搜索框样式 */
.input-group .form-control,
.input-group .btn {
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
}

.input-group .form-control:first-child,
.input-group .btn:first-child {
    border-radius: var(--border-radius) 0 0 var(--border-radius);
}

/* 工具页面通用样式 */
.tool-container {
    max-width: 900px;
    margin: 2rem auto;
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.tool-header {
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid #eee;
}

.tool-title {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
    color: var(--dark-color);
}

.tool-description {
    color: #6c757d;
    font-size: 1.1rem;
}

/* 输入区域样式 */
.form-control,
.form-select,
textarea {
    border-radius: 8px;
    padding: 0.75rem 1rem;
    border: 1px solid #ced4da;
    transition: border-color 0.2s, box-shadow 0.2s;
    font-size: 1rem;
}

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

textarea {
    min-height: 200px;
    resize: vertical;
}

/* 按钮样式 */
.btn {
    border-radius: 8px;
    padding: 0.75rem 1.5rem;
    font-weight: 500;
    transition: var(--transition);
}

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

.btn-primary:hover {
    background-color: #0a58ca;
    border-color: #0a58ca;
}

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

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

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

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

.btn-outline-warning:hover {
    background-color: var(--warning-color);
    border-color: var(--warning-color);
    color: #212529;
}

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

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

/* 结果展示区域 */
.result-area {
    margin-top: 2rem;
    padding: 1.5rem;
    background-color: var(--light-color);
    border-radius: 8px;
    border: 1px dashed #ced4da;
}

.result-pre {
    background-color: white;
    padding: 1rem;
    border-radius: 8px;
    overflow-x: auto;
    white-space: pre-wrap;
    word-wrap: break-word;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    line-height: 1.5;
    color: var(--dark-color);
    max-height: 400px;
    overflow-y: auto;
}

/* 复制按钮 */
.copy-btn {
    cursor: pointer;
    color: var(--primary-color);
    transition: color 0.2s;
    font-size: 0.9rem;
}

.copy-btn:hover {
    color: #0a58ca;
}

.copy-btn.copied {
    color: var(--success-color);
}

/* 统计卡片 */
.card.border-0.bg-light {
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.card.border-0.bg-light:hover {
    transform: translateY(-3px);
    box-shadow: var(--box-shadow);
}

/* AdSense广告样式 */
.adsbygoogle {
    display: block !important;
    margin: 1rem auto;
    text-align: center;
}

/* 页脚样式 */
footer {
    border-top: 1px solid #dee2e6;
}

footer a {
    color: #6c757d;
}

footer a:hover {
    color: var(--primary-color);
}

/* 响应式调整 */
@media (max-width: 768px) {
    .tool-container {
        padding: 1.5rem;
        margin: 1rem auto;
    }

    .display-4 {
        font-size: 2.5rem;
    }

    .lead {
        font-size: 1.1rem;
    }

    .tool-card {
        margin-bottom: 1.5rem;
    }

    .navbar-nav {
        text-align: center;
    }
}

/* 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 pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.02);
    }
}

/* 工具图标动画 */
.tool-card i.fa-2x {
    transition: transform 0.3s ease;
}

.tool-card:hover i.fa-2x {
    transform: rotate(10deg) scale(1.1);
}

/* 输入框组 */
.input-group-text {
    background-color: transparent;
    border-right: none;
}

.input-group-text:first-child {
    border-radius: 8px 0 0 8px;
}

/* 结果标题 */
.result-title {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: var(--dark-color);
    display: flex;
    align-items: center;
    gap: 10px;
}

/* 操作按钮组 */
.btn-group {
    gap: 0.5rem;
}

/* Tree View 样式 */
.tree-view {
    background: white;
    padding: 1rem;
    border-radius: 8px;
    overflow-x: auto;
    font-family: 'Courier New', monospace;
    white-space: pre;
    line-height: 1.6;
    max-height: 400px;
    overflow-y: auto;
}

.tree-view .tree-node {
    margin-left: 1.5rem;
}

/* 表格样式 */
.table {
    margin-bottom: 1.5rem;
}

.table th,
.table td {
    vertical-align: middle;
}

/* 错误提示 */
.text-danger {
    animation: shake 0.5s ease;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

/* 加载状态 */
.loading {
    position: relative;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

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

/* 工具分组 */
.tool-section {
    margin-bottom: 3rem;
}

.tool-section h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--dark-color);
    position: relative;
    padding-bottom: 0.5rem;
}

.tool-section h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 3px;
}

/* 标签样式 */
.badge {
    font-size: 0.85rem;
    padding: 0.4rem 0.6rem;
    border-radius: 20px;
}

/* 代码块 */
pre {
    background: #282c34;
    color: #abb2bf;
    padding: 1rem;
    border-radius: 8px;
    overflow-x: auto;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    line-height: 1.6;
}

code {
    background: #f6f8fa;
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
}

/* 示例代码 */
.example-code {
    background: #282c34;
    color: #abb2bf;
    padding: 1rem;
    border-radius: 8px;
    margin: 1rem 0;
    overflow-x: auto;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    line-height: 1.6;
}

/* 成功/错误提示 */
.alert {
    border-radius: 8px;
    border: none;
    padding: 1rem;
    margin-bottom: 1rem;
}

.alert-success {
    background: #d1e7dd;
    color: #0f5132;
}

.alert-danger {
    background: #f8d7da;
    color: #842029;
}

/* 链接样式 */
.text-decoration-none:hover {
    text-decoration: underline;
}