:root {
    --primary-color: #212529;
    --secondary-color: #6c757d;
    --background-color: #f8f9fa;
    --card-background: #fff;
    --text-color: #333;
    --border-color: #dee2e6;
    --hover-color: #e9ecef;
    --shadow-color: rgba(0,0,0,0.1);
}

/* 暗色模式变量 */
@media (prefers-color-scheme: dark) {
    :root {
        --primary-color: #f8f9fa;
        --secondary-color: #adb5bd;
        --background-color: #212529;
        --card-background: #343a40;
        --text-color: #f8f9fa;
        --border-color: #495057;
        --hover-color: #495057;
        --shadow-color: rgba(0,0,0,0.3);
    }
}

/* 基础样式 */
body {
    background-color: var(--background-color);
    color: var(--text-color);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    margin: 0;
}

/* 组件样式 */
.card {
    background-color: var(--card-background);
    border: none;
    box-shadow: 0 2px 4px var(--shadow-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 15px var(--shadow-color);
}

/* 进度模态框样式 */
#progressModal {
    --modal-max-height: 80vh;
    --modal-width: 600px;
}

#progressModal .modal-dialog {
    max-width: var(--modal-width);
    margin: 1.75rem auto;
}

#progressModal .modal-content {
    max-height: var(--modal-max-height);
    display: flex;
    flex-direction: column;
    border-radius: 8px;
}

#progressModal .modal-header {
    flex-shrink: 0;
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
}

#progressModal .modal-body {
    display: flex;
    flex-direction: column;
    padding: 1.5rem;
    overflow: hidden;
    gap: 1rem;
}

/* 日志容器样式 */
.log-container {
    flex: 1;
    min-height: 200px;
    overflow-y: auto;
    background-color: var(--background-color);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 10px;
    margin-top: 10px;
}

#logOutput {
    font-family: monospace;
    font-size: 0.9em;
    margin: 0;
    white-space: pre-wrap;
    word-wrap: break-word;
    line-height: 1.5;
}

/* 进度条容器样式 */
.progress-container {
    flex-shrink: 0;
    min-height: 50px;
    margin-bottom: 10px;
}

.progress {
    height: 24px !important;
    margin: 0 !important;
    background-color: var(--background-color);
}

.progress-bar {
    font-size: 14px;
    line-height: 24px;
    min-height: 24px !important;
}

/* 当前章节信息样式 */
#currentChapter {
    flex-shrink: 0;
    min-height: 30px;
    padding: 0.5rem;
    background-color: var(--background-color);
    border-radius: 4px;
    margin: 0;
}

/* 队列状态样式 */
.queue-status {
    flex-shrink: 0;
    min-height: 30px;
    font-size: 0.9em;
    color: var(--text-color);
    text-align: center;
    padding: 5px;
    background-color: var(--background-color);
    border-radius: 4px;
    margin: 5px 0;
}

/* 响应式调整 */
@media (max-width: 768px) {
    #progressModal {
        --modal-width: 95vw;
    }
    
    .card {
        margin-bottom: 1rem;
    }
    
    .container {
        padding: 0.5rem;
    }
}

/* 动画效果 */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.fade-in {
    animation: fadeIn 0.3s ease;
}

/* 添加平滑滚动 */
html {
    scroll-behavior: smooth;
}

/* 导航栏阴影 */
.navbar {
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

/* 卡片悬停效果 */
.card {
    transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

/* 按钮悬停效果 */
.btn {
    transition: transform 0.2s;
}

.btn:hover {
    transform: scale(1.05);
}

/* 下载队列列表样式 */
#queueList {
    max-height: 200px;
    overflow-y: auto;
}

.queue-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 1rem;
    border-bottom: 1px solid #eee;
}

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

/* Toast 通知样式 */
.toast {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
}

/* 进度条样式 */
.progress {
    height: 25px;
    border-radius: 15px;
    background-color: #f0f0f0;
}

.progress-bar {
    border-radius: 15px;
    transition: width 0.3s ease;
}

/* 日志容器样式 */
.log-container {
    max-height: 300px;
    overflow-y: auto;
    background-color: #f8f9fa;
    border-radius: 5px;
    border: 1px solid #dee2e6;
}

#logOutput {
    font-family: 'Consolas', monospace;
    font-size: 0.9rem;
    line-height: 1.5;
    margin: 0;
    padding: 1rem;
    white-space: pre-wrap;
    word-wrap: break-word;
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: #888;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #555;
}

/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(0,0,0,.1);
    border-radius: 50%;
    border-top-color: #000;
    animation: spin 1s ease-in-out infinite;
}

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

/* 页脚样式 */
.footer {
    background-color: var(--dark);
    width: 100%;
    padding: 1rem 0;
}

/* 快捷键提示 */
.shortcut-hint {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 10px;
    border-radius: 5px;
    font-size: 0.9rem;
    z-index: 1000;
    display: none;
}

/* 下载进度浮动按钮 */
#showProgress {
    bottom: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
    transition: transform 0.2s, box-shadow 0.2s;
}

#showProgress:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.3);
}

/* 下载统计 */
.download-stats {
    background: rgba(0, 0, 0, 0.05);
    border-radius: 5px;
    padding: 10px;
    margin-bottom: 20px;
}

.download-stats .stat-item {
    display: flex;
    justify-content: space-between;
    margin-bottom: 5px;
}

/* 改进的卡片样式 */
.card {
    border: none;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

/* 改进的按钮样式 */
.btn {
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

.btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255,255,255,0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.3s, height 0.3s;
}

.btn:active::after {
    width: 200px;
    height: 200px;
    opacity: 0;
}

/* 确保主内容区域有最小高度 */
main {
    min-height: calc(100vh - 56px - 100px); /* 减去导航栏和页脚的高度 */
    padding-bottom: 2rem; /* 添加一些底部内边距 */
}

/* 修改容器样式以适应新的布局 */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}