/* 科技风主题变量 */
:root {
    --bg-primary: #0a0e27;
    --bg-secondary: #1a1d35;
    --bg-card: #151933;
    --accent-cyan: #00d4ff;
    --accent-purple: #7c3aed;
    --accent-gradient: linear-gradient(135deg, #00d4ff 0%, #7c3aed 100%);
    --text-primary: #ffffff;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --border-color: #2d3748;
    --shadow-glow: 0 0 20px rgba(0, 212, 255, 0.3);
    --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.3);
}

/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'SF Mono', 'Monaco', 'Inconsolata', 'Fira Code', 'Fira Mono', 'Roboto Mono', monospace;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-primary);
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(124, 58, 237, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(0, 212, 255, 0.1) 0%, transparent 50%);
    min-height: 100vh;
}

/* 应用布局 */
.app-layout {
    display: flex;
    min-height: 100vh;
}

/* 左侧边栏 */
.sidebar {
    width: 260px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    position: fixed;
    height: 100vh;
    overflow-y: auto;
    z-index: 1000;
    transition: all 0.3s ease;
}

.sidebar-header {
    padding: 2rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-header h1 {
    font-size: 1.2rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 0;
}

.sidebar-nav {
    padding: 1rem 0;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.5rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.3s ease;
    border-left: 3px solid transparent;
    font-weight: 500;
}

.nav-item:hover {
    background: var(--bg-card);
    color: var(--text-primary);
    border-left-color: var(--accent-cyan);
}

.nav-item.active {
    background: var(--bg-card);
    color: var(--accent-cyan);
    border-left-color: var(--accent-cyan);
}

.nav-icon {
    font-size: 1.2rem;
    width: 24px;
    text-align: center;
}

.nav-text {
    font-size: 0.9rem;
}

/* 右侧主内容 */
.main-content {
    flex: 1;
    margin-left: 260px;
    background: var(--bg-primary);
}

.content-wrapper {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

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

/* 卡片样式 */
.card {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-card);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--accent-gradient);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(0, 212, 255, 0.2);
    border-color: var(--accent-cyan);
}

.card:hover::before {
    opacity: 1;
}

/* 代码块样式 */
.code-block {
    background: #0f172a;
    border-radius: 12px;
    border: 1px solid #334155;
    overflow: hidden;
    margin: 1.5rem 0;
    position: relative;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

.code-header {
    background: #1e293b;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid #334155;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
    color: #cbd5e1;
}

.code-content {
    max-height: 400px;
    overflow: hidden;
    transition: max-height 0.5s ease;
    position: relative;
    background: #0f172a;
}

.code-content.expanded {
    max-height: none;
}

.code-content pre {
    margin: 0;
    padding: 1.5rem;
    background: transparent;
    color: var(--text-primary);
    font-family: 'SF Mono', 'Monaco', 'Inconsolata', 'Fira Code', monospace;
    font-size: 1rem;
    line-height: 1.6;
    font-weight: 400;
}

.code-content pre code {
    background: transparent;
    color: inherit;
    font-family: inherit;
    font-size: inherit;
    line-height: inherit;
}

/* 代码高亮优化 */
.code-content .token.comment,
.code-content .token.prolog,
.code-content .token.doctype,
.code-content .token.cdata {
    color: #64748b;
    font-style: italic;
}

.code-content .token.punctuation {
    color: #94a3b8;
}

.code-content .token.property,
.code-content .token.tag,
.code-content .token.constant,
.code-content .token.symbol,
.code-content .token.deleted {
    color: #f472b6;
}

.code-content .token.boolean,
.code-content .token.number {
    color: #f59e0b;
}

.code-content .token.selector,
.code-content .token.attr-name,
.code-content .token.string,
.code-content .token.char,
.code-content .token.builtin,
.code-content .token.inserted {
    color: #10b981;
}

.code-content .token.operator,
.code-content .token.entity,
.code-content .token.url,
.language-css .token.string,
.style .token.string {
    color: #06b6d4;
}

.code-content .token.atrule,
.code-content .token.attr-value,
.code-content .token.function,
.code-content .token.class-name {
    color: #8b5cf6;
}

.code-content .token.keyword {
    color: #3b82f6;
    font-weight: 500;
}

.code-content .token.regex,
.code-content .token.important,
.code-content .token.variable {
    color: #ef4444;
}

.code-expand-btn {
    background: var(--accent-gradient);
    border: none;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.8rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.code-expand-btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-glow);
}

/* 按钮样式 */
.btn {
    background: var(--accent-gradient);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
}

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

.btn-secondary {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.btn-secondary:hover {
    background: var(--accent-gradient);
    color: var(--text-primary);
    border-color: transparent;
}

.btn-success {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
}

.btn-danger {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
}

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

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.8rem;
}

/* 表单样式 */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.9rem;
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-family: 'SF Mono', 'Monaco', 'Inconsolata', 'Fira Code', monospace;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--accent-cyan);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

/* 筛选器样式 */
.filters {
    background: var(--bg-card);
    padding: 1.5rem;
    border-radius: 12px;
    margin-bottom: 2rem;
    border: 1px solid var(--border-color);
}

.filters-row {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.filters label {
    color: var(--text-secondary);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.9rem;
}

/* 代码元信息样式 */
.code-meta {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.code-language {
    background: var(--accent-gradient);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.code-date, .code-size {
    color: var(--text-muted);
    font-size: 0.8rem;
}

/* 分页样式 */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    margin-top: 2rem;
}

.pagination button {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: 'SF Mono', 'Monaco', 'Inconsolata', 'Fira Code', monospace;
}

.pagination button:hover:not(:disabled) {
    background: var(--accent-gradient);
    color: var(--text-primary);
    border-color: transparent;
}

.pagination button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.pagination button.active {
    background: var(--accent-gradient);
    color: var(--text-primary);
    border-color: transparent;
}

/* 加载动画 */
.loading {
    border: 2px solid var(--border-color);
    border-top: 2px solid var(--accent-cyan);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 2rem auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .app-layout {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
        height: auto;
        position: relative;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }
    
    .sidebar-header {
        padding: 1rem;
    }
    
    .sidebar-header h1 {
        font-size: 1rem;
        text-align: center;
    }
    
    .sidebar-nav {
        padding: 0.5rem 0;
        display: flex;
        justify-content: center;
        gap: 1rem;
    }
    
    .nav-item {
        flex-direction: column;
        gap: 0.5rem;
        padding: 0.75rem 1rem;
        text-align: center;
        border-left: none;
        border-bottom: 3px solid transparent;
    }
    
    .nav-item:hover,
    .nav-item.active {
        border-left: none;
        border-bottom-color: var(--accent-cyan);
    }
    
    .nav-text {
        font-size: 0.8rem;
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .content-wrapper {
        padding: 1rem;
    }
    
    .card {
        padding: 1.5rem;
    }
    
    .filters-row {
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
    }
    
    .filters-row .form-control {
        width: 100% !important;
    }
    
    .code-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .pagination {
        flex-wrap: wrap;
    }
}

/* 空状态样式 */
.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-muted);
}

.empty-state h3 {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

/* 提示消息样式 */
.alert {
    padding: 1rem 1.5rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    border-left: 4px solid;
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    border-left-color: #10b981;
    color: #10b981;
}

.alert-error {
    background: rgba(239, 68, 68, 0.1);
    border-left-color: #ef4444;
    color: #ef4444;
}

.alert-info {
    background: rgba(0, 212, 255, 0.1);
    border-left-color: var(--accent-cyan);
    color: var(--accent-cyan);
}

/* 代码操作按钮 */
.code-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-top: 1rem;
}

/* 复制按钮 */
.copy-btn {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.8rem;
    transition: all 0.3s ease;
}

.copy-btn:hover {
    background: var(--accent-gradient);
    color: var(--text-primary);
    border-color: transparent;
}

.copy-btn.copied {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
    border-color: transparent;
}

/* 代码展开容器样式 */
.code-expand-container {
    text-align: center;
    padding: 1rem;
    border-top: 1px solid #334155;
    background: #1e293b;
}

.code-expand-btn {
    background: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
    border: none;
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.3s ease;
    font-family: 'SF Mono', 'Monaco', 'Inconsolata', 'Fira Code', monospace;
}

.code-expand-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(59, 130, 246, 0.4);
}


.toggle-switch.active {
    background: #007bff;
}

.toggle-switch::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 20px;
    height: 20px;
    background: white;
    border-radius: 50%;
    transition: transform 0.3s;
}

.toggle-switch.active::after {
    transform: translateX(26px);
}

/* 登录表单样式 */
.login-container {
    max-width: 400px;
    margin: 2rem auto;
}

.alert {
    padding: 0.75rem 1rem;
    border-radius: 4px;
    margin-bottom: 1rem;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    .header h1 {
        font-size: 1.5rem;
    }
    
    .nav {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .filters-row {
        flex-direction: column;
        align-items: stretch;
    }
    
    .admin-actions {
        flex-direction: column;
    }
    
    .code-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
}

/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #007bff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 空状态样式 */
.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: #6c757d;
}

.empty-state h3 {
    margin-bottom: 1rem;
    color: #495057;
}

.empty-state p {
    margin-bottom: 1.5rem;
}