nav.hidden {
    display: none;
}

/* 네비게이션 */
.nav {
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 24px;
    color: #0099ff;
}

.logo a {
    text-decoration: none;
    color: #0099ff;
}

.menu {
    display: flex;
    gap: 20px;
}

.menu a {
    text-decoration: none;
    color: #333;
}

/* 페이지별 네비게이션 */
.nav-page {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 20px;
    padding: 0 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: white;
    z-index: 1000;
    border-bottom: 1px solid rgba(0,0,0,0.1);
}

.logo-page {
    /* font-size: 5px; */
    color: #0099ff;
}

.logo-page a {
    text-decoration: none;
    color: #0099ff;
}

.menu-page {
    display: flex;
    gap: 20px;
}

.menu-page a {
    text-decoration: none;
    color: #333;
}

.nav-qr {
    position: fixed;
    right: 20px;
    top: 10%;
    transform: translateY(-50%);
    background-color: #f0f0f0;
    padding: 10px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}
.qr-container {
    width: 100px;
    height: 100px;
    position: relative;
}
.qr-code {
    position: absolute;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.5s ease-in-out;
}
.active {
    opacity: 1;
}