/* 基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
}

:root {
    --primary-color: #3498db;
    --primary-dark: #2980b9;
    --secondary-color: #7f8c8d;
    --secondary-dark: #6c7b7d;
    --background-color: #f9fafb;
    --card-background: #ffffff;
    --text-primary: #2c3e50;
    --text-secondary: #7f8c8d;
    --text-light: #bdc3c7;
    --border-color: #eaeaea;
    --success-color: #27ae60;
    --shadow-light: 0 2px 12px rgba(0, 0, 0, 0.04);
    --shadow-medium: 0 4px 16px rgba(0, 0, 0, 0.08);
    --shadow-dark: 0 8px 30px rgba(0, 0, 0, 0.12);
    --code-bg: #fcfcfc;
    --header-bg: #ffffff;
    --footer-bg: #2c3e50;
    --transition-speed: 0.3s;
}

body.dark-mode {
    --background-color: #121212;
    --card-background: #1e1e1e;
    --text-primary: #e0e0e0;
    --text-secondary: #aaaaaa;
    --text-light: #777777;
    --border-color: #333333;
    --shadow-light: 0 2px 12px rgba(0, 0, 0, 0.2);
    --shadow-medium: 0 4px 16px rgba(0, 0, 0, 0.3);
    --shadow-dark: 0 8px 30px rgba(0, 0, 0, 0.4);
    --code-bg: #252525;
    --header-bg: #1a1a1a;
    --footer-bg: #121212;
}

body {
    background-color: var(--background-color);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: background-color var(--transition-speed), color var(--transition-speed);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    flex: 1;
}

/* 头部样式 */
header {
    background-color: var(--header-bg);
    box-shadow: var(--shadow-light);
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    transition: background-color var(--transition-speed);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--text-primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: color var(--transition-speed);
}

.logo span {
    color: var(--primary-color);
}

.site-url {
    font-size: 0.9rem;
    color: var(--text-secondary);
    background-color: rgba(0, 0, 0, 0.05);
    padding: 4px 10px;
    border-radius: 4px;
    margin-left: 10px;
}

body.dark-mode .site-url {
    background-color: rgba(255, 255, 255, 0.1);
}

.nav-links {
    display: flex;
    gap: 25px;
    align-items: center;
}

.nav-link {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    padding: 8px 0;
    position: relative;
    transition: color var(--transition-speed);
}

.nav-link:hover {
    color: var(--primary-color);
}

.nav-link.active {
    color: var(--primary-color);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--primary-color);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: width var(--transition-speed);
}

.nav-link:hover::after {
    width: 100%;
}

/* 主题切换按钮 */
.theme-toggle {
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    font-size: 1.2rem;
    padding: 8px;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color var(--transition-speed), color var(--transition-speed);
}

.theme-toggle:hover {
    background-color: rgba(0, 0, 0, 0.05);
    color: var(--primary-color);
}

body.dark-mode .theme-toggle:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.theme-toggle .fa-sun {
    display: none;
}

body.dark-mode .theme-toggle .fa-moon {
    display: none;
}

body.dark-mode .theme-toggle .fa-sun {
    display: block;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    transition: background-color var(--transition-speed), transform 0.2s;
    text-decoration: none;
    text-align: center;
}

.btn:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    color: white;
}

.btn i {
    margin-right: 8px;
}

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

.btn-secondary:hover {
    background-color: var(--secondary-dark);
}

.btn-outline {
    background-color: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

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

.btn-small {
    padding: 8px 16px;
    font-size: 0.9rem;
}

.btn-icon {
    padding: 8px 12px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn-icon i {
    margin-right: 0;
}

/* 卡片样式 */
.card {
    background-color: var(--card-background);
    border-radius: 8px;
    box-shadow: var(--shadow-light);
    padding: 25px;
    transition: box-shadow var(--transition-speed), transform 0.2s ease, background-color var(--transition-speed);
}

.card:hover {
    box-shadow: var(--shadow-medium);
    transform: translateY(-2px);
}

.card-title {
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-color);
    transition: color var(--transition-speed), border-color var(--transition-speed);
}

.card-subtitle {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 15px;
    transition: color var(--transition-speed);
}

/* 页脚样式 */
footer {
    background-color: var(--footer-bg);
    color: #ecf0f1;
    padding: 30px 0;
    margin-top: 60px;
    transition: background-color var(--transition-speed);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: 600;
    color: #ecf0f1;
    text-decoration: none;
}

.copyright {
    font-size: 0.9rem;
    color: #bdc3c7;
}

.beian {
    font-size: 0.85rem;
    color: #bdc3c7;
}

.beian a {
    color: #bdc3c7;
    text-decoration: none;
}

.beian a:hover {
    color: #ecf0f1;
    text-decoration: underline;
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-link {
    color: #bdc3c7;
    font-size: 1.2rem;
    transition: color 0.2s;
}

.social-link:hover {
    color: #ecf0f1;
}

/* 表单样式 */
.form-group {
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-primary);
    transition: color var(--transition-speed);
}

input,
select,
textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color var(--transition-speed), background-color var(--transition-speed), color var(--transition-speed);
    background-color: var(--card-background);
    color: var(--text-primary);
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.code-input {
    font-family: 'Monaco', 'Consolas', 'Courier New', monospace;
    min-height: 300px;
    resize: vertical;
}

/* 代码显示样式 */
.code-display {
    position: relative;
    overflow: hidden;
    margin-bottom: 20px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.code-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--code-bg);
    padding: 12px 15px;
    border-bottom: 1px solid var(--border-color);
    border-radius: 8px 8px 0 0;
    transition: background-color var(--transition-speed), border-color var(--transition-speed);
}

.code-language {
    font-weight: 500;
    color: var(--text-secondary);
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: color var(--transition-speed);
}

.code-actions {
    display: flex;
    gap: 10px;
}

.copy-btn {
    background: none;
    border: none;
    color: var(--primary-color);
    cursor: pointer;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 5px;
    transition: color var(--transition-speed);
}

.copy-btn:hover {
    text-decoration: underline;
}

pre {
    margin: 0;
    padding: 20px;
    overflow-x: auto;
    background-color: var(--code-bg);
    border-radius: 0 0 8px 8px;
    max-height: 500px;
    transition: background-color var(--transition-speed);
}

code {
    font-family: 'Monaco', 'Consolas', 'Courier New', monospace;
    font-size: 0.95rem;
    color: var(--text-primary);
    transition: color var(--transition-speed);
}

/* 标签样式 */
.tag {
    display: inline-block;
    background-color: rgba(52, 152, 219, 0.1);
    color: var(--primary-color);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    margin-right: 8px;
    margin-bottom: 8px;
    cursor: pointer;
    transition: background-color var(--transition-speed), color var(--transition-speed);
}

.tag:hover {
    background-color: rgba(52, 152, 219, 0.2);
}

/* 徽章样式 */
.badge {
    display: inline-block;
    background-color: var(--primary-color);
    color: white;
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-left: 8px;
}

/* 空状态样式 */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 15px;
    opacity: 0.6;
}

.empty-state h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
    font-weight: 400;
}

/* 分页样式 */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    margin-top: 40px;
}

.pagination-item {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 6px;
    background-color: var(--card-background);
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    transition: all var(--transition-speed);
    border: 1px solid var(--border-color);
}

.pagination-item:hover {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.pagination-item.active {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }

    .nav-links {
        width: 100%;
        justify-content: space-between;
        flex-wrap: wrap;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
    }

    .card {
        padding: 20px;
    }
}