#theader { z-index: 999; position: fixed; top: 0; left: 0; width: 100%; height: 100px; background-color: rgba(0, 0, 0, 0.3); transition: height 0.4s; }
#theader .swrap { height: 100%; }

#theader .logo  { position: relative; top: 50%; transform: translateY(-50%); display: block; float: left; font-weight: 700; font-size: 34px; color: #fff; }

#theader #tnav { display: block; float: right; height: 100%; display: flex; flex-wrap: nowrap; }
#theader #tnav a { position: relative; display: block; height: 100%; padding: 0 40px; overflow: hidden; transition: padding 0.4s; }
#theader #tnav a span { z-index: 2; position: relative; top: 50%; transform: translateY(-50%); display: block; text-align: center; font-weight: 700; font-size: 22px; color: #fff; text-shadow: 1px 1px 1px #000; }

#theader #tnav a::after { z-index: 1; display: block; content: ''; position: absolute; top: -100%; left: 0; width: 100%; height: 100%; background-color: rgba(255, 255, 255, 0.3); transition: top ease-out 0.3s; }
#theader #tnav a:hover::after { top: 0; }

#theader.scrollh { height: 90px; }
#theader.scrollh .logo { font-size: 32px; }
#theader.scrollh #tnav a { padding: 0 30px; }
#theader.scrollh #tnav a span { font-size: 20px; }

@media (max-width: 1600px) {
    #theader { height: 90px; }
    #theader .logo { font-size: 32px; }
    #theader #tnav a { padding: 0 30px; }
    #theader #tnav a span { font-size: 20px; }

    #theader.scrollh { height: 75px; }
    #theader.scrollh .logo { font-size: 28px; }
    #theader.scrollh #tnav a { padding: 0 25px; }
    #theader.scrollh #tnav a span { font-size: 18px; }
}
@media (max-width: 1230px) {
    #theader { height: 75px; }
    #theader .logo { font-size: 28px; }
    #theader #tnav a { padding: 0 25px; }
    #theader #tnav a span { font-size: 18px; }
}
@media (max-width: 1024px) {
    #theader .logo { font-size: 27px; }
    #theader #tnav a { padding: 0 20px; }
}
@media (max-width: 767px) {
    #theader { height: 70px; }
    #theader .swrap { width: 100%; max-width: 100%; }
    #theader .logo { margin-left: 20px; font-size: 26px; }
    #theader #tnav { display: none; float: none; position: absolute; top: 70px; width: 100%; height: initial; background-color: #fff; box-shadow: 0 4px 4px -4px #000; border-top: 1px solid #ccc; }
    #theader.active #tnav { display: block; }
    #theader #tnav a { position: relative; display: block; height: initial; padding: 15px 5px; transition: background-color 0.4s; }
    #theader #tnav a span { top: 0; transform: translateY(0); display: block; text-align: center; font-weight: 500; font-size: 17px; color: #000; text-shadow: none; }
    #theader #tnav a::after { display: none; }
    #theader #tnav a:hover { background-color: #ddd; }

    #theader.scrollh2 { background-color: #fff; box-shadow: 0 4px 4px -4px #000; }
    #theader.scrollh2 .logo { color: #1f5399; }

    #theader.active { background-color: #fff; box-shadow: none; }
    #theader.active .logo { color: #1f5399; }
}

/* 햄버거 */
#theader .ham_btn { display: none; position: absolute; top: 55%; transform: translateY(-50%); right: 20px; width: 27px; height: 20px; cursor: pointer; }
#theader .ham_btn div { position: absolute; width: 100%; height: 3px; background-color: #fff; transform-origin: center; }

#theader .ham_btn div:first-child { top: 0%; transform: translateY(-50%); animation: mo_bar1 forwards linear 0.4s; }
#theader .ham_btn div:nth-child(2) { top: 40%; transform: translateY(-50%); animation: mo_bar2 forwards linear 0.4s; }
#theader .ham_btn div:last-child { top: 80%; transform: translateY(-50%); animation: mo_bar3 forwards linear 0.4s; }
@keyframes mo_bar1 {
    0% { top: 50%; transform: translateY(-50%) rotateZ(45deg); }
    50% { top: 50%; transform: translateY(-50%) rotateZ(0deg); }
    100% { top: 0%; transform: translateY(-50%); }
}
@keyframes mo_bar2 {
    0% { opacity: 0; }
    50% { opacity: 1; }
    100% { opacity: 1; }
}
@keyframes mo_bar3 {
    0% { top: 50%; transform: translateY(-50%) rotateZ(-45deg); }
    50% { top: 50%; transform: translateY(-50%) rotateZ(0deg); }
    100% { top: 80%; transform: translateY(-50%); }
}

#theader.active .ham_btn div:first-child { top: 0%; transform: translateY(-50%); animation: mo_bar1_on forwards linear 0.4s; }
#theader.active .ham_btn div:nth-child(2) { top: 40%; transform: translateY(-50%); animation: mo_bar2_on forwards linear 0.4s; }
#theader.active .ham_btn div:last-child { top: 80%; transform: translateY(-50%); animation: mo_bar3_on forwards linear 0.4s; }
@keyframes mo_bar1_on {
    0% { top: 0%; transform: translateY(-50%); }
    50% { top: 50%; transform: translateY(-50%); }
    100% { top: 50%; transform: translateY(-50%) rotateZ(45deg); }
}
@keyframes mo_bar2_on {
    0% { opacity: 1; }
    50% { opacity: 0; }
    100% { opacity: 0; }
}
@keyframes mo_bar3_on {
    0% { top: 80%; transform: translateY(-50%); }
    50% { top: 50%; transform: translateY(-50%); }
    100% { top: 50%; transform: translateY(-50%) rotateZ(-45deg); }
}

@media (max-width: 767px) {
    #theader .ham_btn { display: block; }
    #theader.scrollh2 .ham_btn div { background-color: #1f5399; }
    #theader.active .ham_btn div { background-color: #1f5399; }
}