* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: #ffffff;
    min-height: 100vh;
    padding-bottom: 70px;
    line-height: 1.6;
    color: #333;
}

.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: #fff;
    border-top: 1px solid #e0e0e0;
    z-index: 1000;
}

.nav-container {
    display: flex;
    justify-content: space-around;
    align-items: center;
    padding: 0;
    max-width: 600px;
    margin: 0 auto;
}

.nav-item {
    flex: 1;
    text-align: center;
    padding: 12px 0;
    text-decoration: none;
    color: #999;
    transition: all 0.3s ease;
    position: relative;
    cursor: pointer;
}

.nav-item:hover {
    color: #222;
}

.nav-item.active {
    color: #222;
}

.nav-item.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 20%;
    right: 20%;
    height: 2px;
    background-color: #222;
}

.nav-icon {
    font-size: 20px;
    margin-bottom: 4px;
    display: block;
}

.nav-label {
    font-size: 11px;
    display: block;
    letter-spacing: 0.5px;
}

.footer {
    background: #f8f8f8;
    padding: 60px 20px 100px;
    margin-top: 100px;
    border-top: 1px solid #e0e0e0;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
}

.footer-section h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
    color: #222;
    letter-spacing: 1px;
}

.footer-section p,
.footer-section ul {
    font-size: 14px;
    color: #666;
    line-height: 1.8;
}

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

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

.footer-section a {
    color: #666;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: #222;
}

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.social-links a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: #222;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: #444;
    transform: translateY(-2px);
}

.footer-bottom {
    text-align: center;
    margin-top: 40px;
    padding-top: 30px;
    border-top: 1px solid #e0e0e0;
    font-size: 13px;
    color: #999;
}

@media (max-width: 768px) {
    .nav-icon {
        font-size: 18px;
    }

    .nav-label {
        font-size: 10px;
    }

    .footer {
        padding: 40px 20px 100px;
    }

    .footer-container {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .footer-section {
        text-align: center;
    }

    .social-links {
        justify-content: center;
    }
}