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

html, body {
    overflow-x: hidden;
    width: 100%;
    max-width: 100%;
}

body {
    font-family: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: #333;
}

#main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* Header Styles */
.header-container {
    max-width: 1200px;
    margin: 0 auto;
    background: #fff;
    position: sticky;
    top: 0;
    border-bottom: 1px solid #e5e7eb;
    z-index: 1000;
}

.header-top {
    display: flex;
    align-items: center;
    position: relative;
    padding: 15px 40px;
}

.logo-section {
    display: flex;
    align-items: center;
    justify-content: flex-start;
}

.logo-section a {
    display: block;
}

.search-section {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    justify-content: center;
}

.search-form {
    display: flex;
    align-items: center;
    background: #f5f5f5;
    border-radius: 25px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.search-form:focus-within {
    background: #fff;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.search-input {
    flex: 1;
    padding: 10px 20px;
    border: none;
    background: transparent;
    outline: none;
    font-size: 14px;
    min-width: 420px;
}

.search-btn {
    padding: 10px 20px;
    background: #555;
    border: none;
    color: #fff;
    cursor: pointer;
    transition: background 0.3s ease;
    font-size: 14px;
}

.search-btn:hover {
    background: #666;
}

/* Navigation Menu */
.nav-menu {
    background: #fff;
    padding: 0;
    display: flex;
    justify-content: center;
}

.nav-list {
    display: flex;
    list-style: none;
    align-items: center;
}

.nav-item {
    position: relative;
}

.nav-link {
    display: block;
    padding: 20px 25px;
    text-decoration: none;
    color: #333;
    font-weight: 500;
    font-size: 18px;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: #333;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: #333;
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 80%;
}

/* Submenu */
.submenu {
    position: absolute;
    top: 100%;
    left: 50%;
    background: #fff;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px) translateX(-50%);
    transition: all 0.3s ease;
    z-index: 100;
    border-radius: 4px;
    overflow: hidden;
}

.nav-item:hover .submenu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) translateX(-50%);
}

.submenu-item {
    list-style: none;
}

.submenu-link {
    display: block;
    padding: 12px 25px;
    color: #666;
    text-decoration: none;
    transition: all 0.3s ease;
    border-left: 3px solid transparent;
    font-size: 14px;
    white-space: nowrap;
}

.submenu-link:hover {
    background: #f8f9fa;
    color: #333;
    border-left-color: #333;
    padding-left: 30px;
}

/* Responsive Design */
@media (max-width: 1133px) {
    .header-top {
        flex-wrap: wrap;
        gap: 10px;
        padding: 10px 15px;
    }
    
    .logo-section {
        flex: 1;
        min-width: 120px;
        justify-content: center;
        order: 1;
    }
    
    .search-section {
        position: relative;
        left: auto;
        transform: none;
        width: 100%;
        order: 2;
        margin-top: 10px;
    }
    
    .nav-list {
        gap: 0;
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .nav-link {
        padding: 15px 12px;
        font-size: 13px;
        white-space: nowrap;
    }
    
    .submenu {
        min-width: 180px;
    }
    
    #main {
        padding: 15px;
    }
    
    .search-form {
        border-radius: 20px;
    }
    
    .search-input {
        padding: 8px 15px;
        font-size: 13px;
    }
    
    .search-btn {
        padding: 8px 15px;
        font-size: 13px;
    }
}