/* 基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-primary: #1a1a2e;
    --bg-secondary: #16213e;
    --bg-card: #0f3460;
    --accent: #e94560;
    --text-primary: #eaeaea;
    --text-secondary: #a0a0a0;
    --border: #2a2a4a;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

a {
    color: var(--accent);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* 导航栏 */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
}

.nav-brand a {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--text-primary);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.nav-links a, .btn-link {
    color: var(--text-secondary);
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.nav-links a:hover, .btn-link:hover {
    color: var(--text-primary);
}

.user-info {
    color: var(--accent);
}

/* 容器 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

/* 页面标题 */
.page-header {
    margin-bottom: 2rem;
}

.page-header h1 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.back-link {
    display: inline-block;
    margin-bottom: 1rem;
}

/* 搜索栏 */
.search-bar {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 2rem;
}

.search-bar input {
    flex: 1;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 1rem;
}

.search-bar input:focus {
    outline: none;
    border-color: var(--accent);
}

.search-bar button {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    background-color: var(--accent);
    color: white;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.2s;
}

.search-bar button:hover {
    background-color: #d63a54;
}

/* 按钮 */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1rem;
    transition: all 0.2s;
}

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

.btn-primary:hover {
    background-color: #d63a54;
}

.btn-danger {
    background-color: #dc3545;
    color: white;
}

.btn-danger:hover {
    background-color: #c82333;
}

.btn-block {
    width: 100%;
}

/* Skill 卡片网格 */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.skill-card {
    background-color: var(--bg-secondary);
    border-radius: 8px;
    padding: 1.5rem;
    border: 1px solid var(--border);
    transition: transform 0.2s, box-shadow 0.2s;
}

.skill-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
    border-color: var(--accent);
}

.skill-card a {
    color: inherit;
    text-decoration: none;
}

.skill-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.skill-desc {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.skill-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.8rem;
}

.badge {
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
}

.badge-github {
    background-color: #6f42c1;
    color: white;
}

.badge-upload {
    background-color: #28a745;
    color: white;
}

.date {
    color: var(--text-secondary);
}

/* 空状态 */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-secondary);
}

.empty-state p {
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

/* Skill 详情页 */
.skill-detail {
    background-color: var(--bg-secondary);
    border-radius: 8px;
    padding: 2rem;
}

.skill-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.skill-header h1 {
    font-size: 2rem;
}

.skill-actions {
    display: flex;
    gap: 0.5rem;
}

.skill-info {
    background-color: var(--bg-card);
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 2rem;
}

.skill-info p {
    margin-bottom: 0.5rem;
}

.skill-content h2 {
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border);
}

.markdown-body {
    line-height: 1.8;
    color: var(--text-secondary);
}

.markdown-body pre {
    background-color: var(--bg-primary);
    padding: 1rem;
    border-radius: 8px;
    overflow-x: auto;
    margin: 1rem 0;
}

.markdown-body code {
    background-color: var(--bg-primary);
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    font-family: 'Consolas', 'Monaco', monospace;
}

/* 登录页 */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 80vh;
}

.login-box {
    background-color: var(--bg-secondary);
    padding: 3rem;
    border-radius: 12px;
    width: 100%;
    max-width: 400px;
    text-align: center;
}

.login-box h1 {
    margin-bottom: 2rem;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-size: 1rem;
}

.form-group input:focus {
    outline: none;
    border-color: var(--accent);
}

.error-msg {
    color: var(--accent);
    font-size: 0.9rem;
    margin-top: 0.5rem;
}

/* 导入页 */
.import-methods {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.import-card {
    background-color: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid var(--border);
}

.import-card h3 {
    margin-bottom: 1rem;
}

.import-card .form-group {
    display: flex;
    gap: 0.5rem;
}

.import-card input[type="text"] {
    flex: 1;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    background-color: var(--bg-primary);
    color: var(--text-primary);
}

.import-card input[type="file"] {
    flex: 1;
    padding: 0.5rem;
    color: var(--text-secondary);
}

.import-result {
    background-color: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid var(--border);
}

.import-result h3 {
    margin-bottom: 1rem;
}

/* 错误页 */
.error-page {
    text-align: center;
    padding: 4rem 2rem;
}

.error-page h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--accent);
}

/* 响应式 */
@media (max-width: 768px) {
    .navbar {
        padding: 1rem;
    }
    
    .container {
        padding: 1rem;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
    
    .import-methods {
        grid-template-columns: 1fr;
    }
    
    .skill-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .login-box {
        padding: 2rem;
        margin: 1rem;
    }
}