:root {
    --primary-color: #3498db;
    --secondary-color: #2c3e50;
    --background-color: #f8f9fa;
    --card-bg: #ffffff;
    --text-color: #333333;
    --border-color: #dee2e6;
    --folder-color: #3498db;
    --file-color: #555555;
    --hover-color: #f1f8fe;
    --shadow-color: rgba(0, 0, 0, 0.05);
}

[data-theme="dark"] {
    --primary-color: #4dabf7;
    --secondary-color: #adb5bd;
    --background-color: #212529;
    --card-bg: #343a40;
    --text-color: #e9ecef;
    --border-color: #495057;
    --folder-color: #4dabf7;
    --file-color: #ced4da;
    --hover-color: #2b3035;
    --shadow-color: rgba(0, 0, 0, 0.2);
}
@font-face {
    font-family: CustomFont;
    src: url("./fonts.woff2") format("woff2");
    font-display: swap;
}


/* 全局样式 */
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    transition: background-color 0.3s ease, color 0.3s ease;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    font-family: CustomFont, sans-serif;
}

.navbar {
    background-color: var(--card-bg) !important;
    transition: background-color 0.3s ease;
}

.navbar-light .navbar-brand,
.navbar-light .navbar-nav .nav-link {
    color: var(--text-color);
    transition: color 0.3s ease;
}

.main-container {
    flex: 1;
    padding: 2rem 1rem;
    max-width: 1000px;
}

.card {
    background-color: var(--card-bg);
    border-color: var(--border-color);
    transition: background-color 0.3s ease, border-color 0.3s ease;
    overflow: hidden;
}

.card-header {
    border-bottom-color: var(--border-color);
    transition: border-color 0.3s ease;
}

.form-control {
    background-color: var(--card-bg);
    border-color: var(--border-color);
    color: var(--text-color);
    transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}

.form-control:focus {
    background-color: var(--card-bg);
    color: var(--text-color);
}

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

.btn-outline-secondary:hover {
    background-color: var(--secondary-color);
    color: var(--card-bg);
}

/* 头部装饰 */
.header {
    margin-bottom: 2.5rem;
    position: relative;
}

.header-decoration {
    display: flex;
    justify-content: center;
    margin-top: 1.5rem;
}

.decoration-item {
    width: 30px;
    height: 4px;
    background-color: var(--primary-color);
    margin: 0 5px;
    border-radius: 2px;
}

.decoration-item:nth-child(1) {
    width: 15px;
}

.decoration-item:nth-child(3) {
    width: 15px;
}

/* 文件树样式 */
.file-tree {
    max-height: 600px;
    overflow-y: auto;
}

.file-item {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    transition: background-color 0.2s ease;
}

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

.file-item:hover {
    background-color: var(--hover-color);
}

.file-icon {
    margin-right: 0.75rem;
    font-size: 1.2rem;
    width: 24px;
    text-align: center;
}

.folder-icon {
    color: var(--folder-color);
}

.file-icon.file-icon {
    color: var(--file-color);
}

.file-name {
    flex-grow: 1;
    margin-right: 1rem;
    word-break: break-word;
}

.file-size {
    color: var(--secondary-color);
    font-size: 0.875rem;
    white-space: nowrap;
}

.file-download {
    margin-left: 1rem;
}

.folder-content {
    padding-left: 2.5rem;
    border-left: 1px dashed var(--border-color);
    margin-left: 0.75rem;
}

.folder-toggle {
    cursor: pointer;
    -webkit-user-select: none;
    user-select: none;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .main-container {
        padding: 1.5rem 0.75rem;
    }
    
    .file-item {
        padding: 0.75rem;
    }
    
    .file-size {
        font-size: 0.75rem;
    }
    
    .folder-content {
        padding-left: 1.5rem;
    }
}

/* 页脚样式 */
.footer {
    background-color: var(--card-bg);
    border-top: 1px solid var(--border-color);
    color: var(--text-color);
    transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease;
    padding: 1.5rem 0;
    margin-top: 2rem;
}

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

/* 动画延迟 */
.animate__fadeInUp {
    animation-delay: 0.2s;
}

/* 代码样式 */
code {
    background-color: var(--hover-color);
    color: var(--primary-color);
    padding: 0.2rem 0.4rem;
    border-radius: 0.25rem;
}