* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Microsoft YaHei", sans-serif;
}

body {
    background-color: #f5f5f5;
    color: #333;
    line-height: 1.6;
    padding: 20px;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

header {
    text-align: center;
    margin-bottom: 40px;
}

h1 {
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 20px;
}

.main-nav {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 30px;
}

.main-nav a {
    text-decoration: none;
    color: #666;
    padding: 8px 16px;
    border-radius: 20px;
    transition: all 0.3s;
}

.main-nav a:hover {
    background-color: #e3f2fd;
    color: #1976d2;
}

.main-nav a.active {
    background-color: #1976d2;
    color: white;
}

.intro {
    background-color: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    margin-bottom: 30px;
}

.trash-heap {
    background-color: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.trash-list {
    max-height: 600px;
    overflow-y: auto;
    padding: 10px;
}

.trash-item {
    background-color: #f8f9fa;
    border-radius: 8px;
    padding: 15px;
    margin-bottom: 15px;
    border-left: 4px solid #1976d2;
}

.trash-date {
    color: #666;
    font-size: 0.9rem;
    margin-bottom: 8px;
}

.trash-content {
    color: #333;
    white-space: pre-wrap;
}

.empty-message {
    text-align: center;
    color: #666;
    padding: 40px;
    font-size: 1.1rem;
}

footer {
    margin-top: 50px;
    text-align: center;
    color: #7f8c8d;
    font-size: 0.9rem;
}

/* 暗黑模式样式 */
body.dark-mode {
    background-color: #1a1a1a;
    color: #ffffff;
}

body.dark-mode .intro,
body.dark-mode .trash-heap {
    background-color: #2d2d2d;
    color: #ffffff;
}

body.dark-mode .trash-item {
    background-color: #3d3d3d;
    border-left-color: #64b5f6;
}

body.dark-mode .trash-date {
    color: #aaa;
}

body.dark-mode .trash-content {
    color: #fff;
}

/* 响应式设计 */
@media (max-width: 768px) {
    body {
        padding: 10px;
    }

    .container {
        padding: 10px;
    }

    h1 {
        font-size: 2rem;
    }
}

.solution-library {
    background-color: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.solution-list {
    max-height: 600px;
    overflow-y: auto;
    padding: 10px;
}

.solution-item {
    background-color: #f8f9fa;
    border-radius: 8px;
    padding: 15px;
    margin-bottom: 15px;
    border-left: 4px solid #1976d2;
}

.solution-date {
    color: #666;
    font-size: 0.9rem;
    margin-bottom: 8px;
}

.solution-content {
    color: #333;
    white-space: pre-wrap;
}

/* 暗黑模式下的解决方案样式 */
body.dark-mode .solution-library {
    background-color: #2d2d2d;
    color: #ffffff;
}

body.dark-mode .solution-item {
    background-color: #3d3d3d;
    border-left-color: #64b5f6;
}

body.dark-mode .solution-date {
    color: #aaa;
}

body.dark-mode .solution-content {
    color: #fff;
}