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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f9f9f9;
}

/* 颜色方案 */
:root {
    --primary-color: #4CAF50;
    --secondary-color: #2196F3;
    --accent-color: #FF9800;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    --text-color: #333;
    --text-light: #6c757d;
    --border-color: #dee2e6;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
}

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

/* 按钮 */
.btn {
    display: inline-block;
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background-color: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

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

.btn-primary:hover {
    background-color: #45a049;
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

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

.btn-secondary:hover {
    background-color: #0b7dda;
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

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

.btn-accent:hover {
    background-color: #e68a00;
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

/* 按钮点击效果 */
.btn:active {
    transform: translateY(0);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* 卡片基础样式 */
.card,
.course-card,
.event-card,
.portfolio-card,
.question-card {
    background-color: white;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

/* 卡片通用hover效果 */
.card:hover,
.course-card:hover,
.event-card:hover,
.portfolio-card:hover,
.question-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

/* 卡片渐变效果 */
.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.card:hover::before {
    left: 100%;
}

/* 卡片内容样式 */
.card {
    padding: 20px;
    margin-bottom: 20px;
}

/* 导航栏 */
.navbar {
    background-color: white;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

.logo {
    font-size: 24px;
    font-weight: bold;
    color: var(--primary-color);
    text-decoration: none;
    display: flex;
    align-items: center;
}

.logo img {
    width: 40px;
    height: 40px;
    margin-right: 10px;
}

.nav-links {
    display: flex;
    list-style: none;
}

.nav-links li {
    margin-left: 20px;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.3s ease;
}

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

/* 移动端菜单按钮 */
.mobile-menu-button {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--dark-color);
}

/* 响应式设计 */
@media (max-width: 768px) {
    /* 导航栏 */
    .mobile-menu-button {
        display: block;
    }
    
    .nav-links {
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        background-color: white;
        flex-direction: column;
        align-items: center;
        padding: 20px 0;
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
        transform: translateY(-150%);
        transition: transform 0.3s ease;
        z-index: 999;
    }
    
    .nav-links.active {
        transform: translateY(0);
    }
    
    .nav-links li {
        margin: 10px 0;
    }
    
    /* 英雄区域 */
    .hero h1 {
        font-size: 36px;
    }
    
    .hero p {
        font-size: 16px;
    }
    
    /* 网格布局 */
    .courses-grid,
    .events-grid,
    .portfolio-grid,
    .editor-content {
        grid-template-columns: 1fr;
    }
    
    /* 编辑器内容 */
    .editor-content {
        height: auto;
    }
    
    .editor-pane {
        border-right: none;
        border-bottom: 1px solid var(--border-color);
        padding-bottom: 20px;
        margin-bottom: 20px;
    }
    
    .editor-code {
        height: 400px;
    }
    
    .output-content {
        height: 300px;
    }
    
    /* 个人中心 */
    .profile-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .tab-buttons {
        flex-wrap: wrap;
        gap: 10px;
    }
    
    /* 表格响应式 */
    table {
        font-size: 14px;
    }
    
    th, td {
        padding: 10px;
    }
}

@media (max-width: 480px) {
    /* 英雄区域 */
    .hero h1 {
        font-size: 28px;
    }
    
    .hero p {
        font-size: 14px;
    }
    
    .hero-buttons {
        display: flex;
        flex-direction: column;
        gap: 10px;
        align-items: center;
    }
    
    /* 个人中心 */
    .profile-stats {
        grid-template-columns: 1fr;
    }
    
    /* 页脚 */
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    /* 排行榜 */
    .ranking-filters {
        flex-direction: column;
        gap: 15px;
    }
    
    .filter-group {
        width: 100%;
    }
}

/* 英雄区域 */
.hero {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 100px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100" preserveAspectRatio="none"><path d="M0,0 L100,0 L100,100 Z" fill="rgba(255,255,255,0.1)" /></svg>');
    background-size: cover;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-size: 48px;
    margin-bottom: 20px;
    font-weight: bold;
}

.hero p {
    font-size: 20px;
    margin-bottom: 30px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

/* 课程导航 */
.courses-section {
    padding: 80px 0;
    background-color: var(--light-color);
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.section-title h2 {
    font-size: 36px;
    color: var(--dark-color);
    margin-bottom: 10px;
}

.section-title p {
    font-size: 18px;
    color: var(--text-light);
}

.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.course-card {
    background-color: white;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    padding: 30px;
    text-align: center;
    transition: all 0.3s ease;
}

.course-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.course-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
}

.course-icon.scratch {
    background-color: #FF9900;
    color: white;
}

.course-icon.python {
    background-color: #3776AB;
    color: white;
}

.course-icon.cpp {
    background-color: #00599C;
    color: white;
}

.course-card h3 {
    font-size: 24px;
    margin-bottom: 15px;
    color: var(--dark-color);
}

.course-card p {
    color: var(--text-light);
    margin-bottom: 20px;
}

/* 最新活动 */
.events-section {
    padding: 80px 0;
}

.events-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.event-card {
    background-color: white;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    transition: all 0.3s ease;
}

.event-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.event-image {
    width: 100%;
    height: 200px;
    background-color: var(--light-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
    color: var(--primary-color);
}

.event-content {
    padding: 20px;
}

.event-date {
    color: var(--accent-color);
    font-weight: 500;
    margin-bottom: 10px;
}

.event-card h3 {
    font-size: 20px;
    margin-bottom: 10px;
    color: var(--dark-color);
}

.event-card p {
    color: var(--text-light);
    margin-bottom: 20px;
}

/* 页脚 */
.footer {
    background-color: var(--dark-color);
    color: white;
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3 {
    font-size: 20px;
    margin-bottom: 20px;
    color: white;
}

.footer-section p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 10px;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-section ul li a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: var(--primary-color);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 30px;
    text-align: center;
    color: rgba(255, 255, 255, 0.7);
}

/* 题库页面 */
.questions-section {
    padding: 80px 0;
}

.questions-filter {
    background-color: white;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    padding: 30px;
    margin-bottom: 40px;
}

.filter-form {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
    color: var(--dark-color);
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid var(--border-color);
    border-radius: 5px;
    font-size: 16px;
    transition: all 0.3s ease;
    background-color: white;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(76, 175, 80, 0.1);
    transform: translateY(-2px);
}

.form-group input:hover,
.form-group select:hover {
    border-color: var(--secondary-color);
}

.questions-list {
    display: grid;
    gap: 20px;
}

.question-card {
    background-color: white;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    padding: 30px;
    transition: all 0.3s ease;
}

.question-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.question-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.question-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--dark-color);
}

.question-meta {
    display: flex;
    gap: 15px;
}

.question-language {
    background-color: var(--secondary-color);
    color: white;
    padding: 5px 10px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
}

.question-difficulty {
    padding: 5px 10px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
}

.question-difficulty.easy {
    background-color: rgba(40, 167, 69, 0.1);
    color: var(--success-color);
}

.question-difficulty.medium {
    background-color: rgba(255, 193, 7, 0.1);
    color: var(--warning-color);
}

.question-difficulty.hard {
    background-color: rgba(220, 53, 69, 0.1);
    color: var(--danger-color);
}

.question-description {
    margin-bottom: 20px;
    color: var(--text-color);
}

/* 在线编辑器页面 */
.editor-section {
    padding: 80px 0;
    background-color: var(--light-color);
}

.editor-container {
    background-color: white;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.editor-header {
    background-color: var(--dark-color);
    color: white;
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.editor-title {
    font-size: 18px;
    font-weight: 500;
}

.editor-controls {
    display: flex;
    gap: 10px;
}

.editor-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    height: 600px;
}

.editor-pane {
    padding: 20px;
    border-right: 1px solid var(--border-color);
}

.editor-code {
    width: 100%;
    height: 100%;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    padding: 15px;
    font-family: 'Courier New', Courier, monospace;
    font-size: 14px;
    line-height: 1.5;
    resize: none;
}

.output-pane {
    padding: 20px;
}

.output-title {
    font-size: 16px;
    font-weight: 500;
    margin-bottom: 15px;
    color: var(--dark-color);
}

.output-content {
    width: 100%;
    height: calc(100% - 40px);
    border: 1px solid var(--border-color);
    border-radius: 5px;
    padding: 15px;
    font-family: 'Courier New', Courier, monospace;
    font-size: 14px;
    line-height: 1.5;
    background-color: var(--light-color);
    overflow: auto;
}

/* 作品展示页面 */
.portfolio-section {
    padding: 80px 0;
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.portfolio-card {
    background-color: white;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    transition: all 0.3s ease;
}

.portfolio-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.portfolio-image {
    width: 100%;
    height: 250px;
    background-color: var(--light-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 64px;
    color: var(--primary-color);
}

.portfolio-content {
    padding: 20px;
}

.portfolio-author {
    color: var(--secondary-color);
    font-weight: 500;
    margin-bottom: 10px;
}

.portfolio-card h3 {
    font-size: 20px;
    margin-bottom: 10px;
    color: var(--dark-color);
}

.portfolio-card p {
    color: var(--text-light);
    margin-bottom: 20px;
}

/* 个人中心页面 */
.profile-section {
    padding: 80px 0;
    background-color: var(--light-color);
}

.profile-container {
    background-color: white;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.profile-header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 40px;
    text-align: center;
}

.profile-avatar {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background-color: white;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
    color: var(--primary-color);
}

.profile-name {
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 10px;
}

.profile-role {
    font-size: 16px;
    opacity: 0.9;
}

.profile-content {
    padding: 40px;
}

.profile-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.stat-card {
    background-color: var(--light-color);
    border-radius: 10px;
    padding: 30px;
    text-align: center;
}

.stat-number {
    font-size: 36px;
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.stat-label {
    font-size: 16px;
    color: var(--text-light);
}

.profile-tabs {
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 30px;
}

.tab-buttons {
    display: flex;
    gap: 20px;
}

.tab-button {
    padding: 10px 20px;
    border: none;
    background: none;
    font-size: 16px;
    font-weight: 500;
    color: var(--text-light);
    cursor: pointer;
    border-bottom: 3px solid transparent;
    transition: all 0.3s ease;
}

.tab-button.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* 徽章系统 */
.badges-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 20px;
}

.badge-item {
    text-align: center;
}

.badge-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background-color: var(--light-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    margin: 0 auto 10px;
    color: var(--primary-color);
}

.badge-name {
    font-size: 14px;
    color: var(--text-color);
}

/* 动画效果 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.6s ease-out forwards;
}

/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(0, 0, 0, 0.1);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s ease-in-out infinite;
}

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

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

::-webkit-scrollbar-track {
    background: var(--light-color);
}

::-webkit-scrollbar-thumb {
    background: var(--text-light);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-color);
}

/* 工具提示 */
.tooltip {
    position: relative;
    display: inline-block;
}

.tooltip .tooltiptext {
    visibility: hidden;
    width: 120px;
    background-color: var(--dark-color);
    color: #fff;
    text-align: center;
    border-radius: 6px;
    padding: 5px;
    position: absolute;
    z-index: 1;
    bottom: 125%;
    left: 50%;
    margin-left: -60px;
    opacity: 0;
    transition: opacity 0.3s;
}

.tooltip:hover .tooltiptext {
    visibility: visible;
    opacity: 1;
}

/* 通知样式 */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 15px 20px;
    border-radius: 5px;
    color: white;
    font-weight: 500;
    z-index: 10000;
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.notification.success {
    background-color: var(--success-color);
}

.notification.error {
    background-color: var(--danger-color);
}

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

.notification.warning {
    background-color: var(--warning-color);
}

/* 排行榜页面样式 */
.ranking-section {
    padding: 80px 0;
    background-color: var(--light-color);
}

.ranking-header {
    text-align: center;
    margin-bottom: 50px;
}

.ranking-header h1 {
    font-size: 36px;
    color: var(--dark-color);
    margin-bottom: 10px;
}

.ranking-header p {
    font-size: 18px;
    color: var(--text-light);
}

/* 排行榜筛选 */
.ranking-filters {
    background-color: white;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    padding: 30px;
    margin-bottom: 40px;
    display: flex;
    gap: 30px;
    align-items: center;
}

.filter-group {
    display: flex;
    align-items: center;
    gap: 10px;
}

.filter-group label {
    font-weight: 500;
    color: var(--dark-color);
}

/* 排行榜表格 */
.ranking-table-container {
    background-color: white;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    margin-bottom: 40px;
}

.ranking-table {
    width: 100%;
    border-collapse: collapse;
}

.ranking-table th,
.ranking-table td {
    padding: 15px 20px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.ranking-table th {
    background-color: var(--light-color);
    font-weight: 600;
    color: var(--dark-color);
}

.ranking-table tr:hover {
    background-color: var(--light-color);
}

/* 当前用户高亮 */
.ranking-table tr.current-user {
    background-color: rgba(76, 175, 80, 0.1);
    font-weight: 500;
}

/* 排名单元格 */
.rank-cell {
    position: relative;
    min-width: 80px;
}

.rank-number {
    font-size: 18px;
    font-weight: 600;
    color: var(--dark-color);
}

.rank-medal {
    position: absolute;
    top: -5px;
    right: -10px;
    font-size: 16px;
}

/* 用户单元格 */
.user-cell {
    display: flex;
    align-items: center;
    gap: 15px;
}

.user-avatar {
    font-size: 32px;
}

.user-info {
    display: flex;
    flex-direction: column;
}

.user-name {
    font-weight: 500;
    color: var(--dark-color);
}

.user-badge {
    background-color: var(--primary-color);
    color: white;
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 12px;
    font-weight: 500;
}

/* 积分单元格 */
.points-cell {
    font-weight: 600;
    color: var(--primary-color);
}

/* 等级单元格 */
.level-cell {
    font-weight: 600;
    color: var(--accent-color);
}

/* 排行榜规则 */
.ranking-rules {
    background-color: white;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    padding: 30px;
    margin-bottom: 40px;
}

.ranking-rules h3 {
    font-size: 20px;
    color: var(--dark-color);
    margin-bottom: 20px;
}

.rules-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.rule-item h4 {
    font-size: 16px;
    color: var(--dark-color);
    margin-bottom: 10px;
}

.rule-item p {
    color: var(--text-light);
}

/* 快速提升指南 */
.ranking-tips {
    background-color: white;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    padding: 30px;
}

.ranking-tips h3 {
    font-size: 20px;
    color: var(--dark-color);
    margin-bottom: 20px;
}

.tips-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.tip-card {
    background-color: var(--light-color);
    border-radius: 10px;
    padding: 20px;
    text-align: center;
    transition: all 0.3s ease;
}

.tip-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.tip-icon {
    font-size: 32px;
    margin-bottom: 15px;
}

.tip-card h4 {
    font-size: 16px;
    color: var(--dark-color);
    margin-bottom: 10px;
}

.tip-card p {
    color: var(--text-light);
    font-size: 14px;
}