:root {
    --site-sidebar-width: 300px;
    --site-sidebar-rail-width: 72px;
    --site-sidebar-transition-duration: 0.48s;
    --site-sidebar-transition-easing: cubic-bezier(0.22, 1, 0.36, 1);
    --site-sidebar-content-fade-duration: 0.1s;
    --site-sidebar-nav-font: "Inter", "Noto Sans KR", system-ui, -apple-system, "Segoe UI", sans-serif;
}

.sidebar-mobile-toggle,
.sidebar-collapse-toggle {
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 999px;
    color: #fff;
    background: rgba(10, 17, 27, 0.76);
    box-shadow: 0 8px 22px rgba(4, 11, 20, 0.2);
    cursor: pointer;
    line-height: 1;
    transition:
        left 0.3s ease,
        color 0.2s ease,
        background-color 0.2s ease,
        border-color 0.2s ease,
        transform 0.3s ease,
        opacity 0.2s ease;
}

.sidebar-mobile-toggle:hover,
.sidebar-mobile-toggle:focus-visible,
.sidebar-collapse-toggle:hover,
.sidebar-collapse-toggle:focus-visible {
    border-color: color-mix(in srgb, var(--accent-color, #149ddd), white 22%);
    color: #fff;
    background: color-mix(in srgb, var(--accent-color, #149ddd), #07111c 28%);
    outline: none;
}

.sidebar-mobile-toggle {
    position: fixed;
    top: 14px;
    left: 16px;
    z-index: 1002;
    display: none;
    width: 40px;
    height: 40px;
    font-size: 21px;
    backdrop-filter: blur(12px);
}

.sidebar-collapse-toggle {
    position: static;
    flex: 0 0 auto;
    align-self: flex-start;
    display: none;
    width: 44px;
    height: 44px;
    margin: auto 0 18px -2px;
    padding: 0;
    border-color: transparent;
    border-radius: 999px;
    color: var(--nav-color, #a8a9b4);
    background: transparent;
    box-shadow: none;
    font-size: 17px;
}

.sidebar-mobile-toggle i,
.sidebar-collapse-toggle i {
    display: block;
    line-height: 1;
}

.sidebar-mobile-toggle.is-auto-hidden {
    opacity: 0;
    pointer-events: none;
    transform: translateY(-8px);
}

#header.header {
    opacity: 1;
    transform: translate3d(0, 0, 0);
    transition:
        width var(--site-sidebar-transition-duration) var(--site-sidebar-transition-easing),
        left var(--site-sidebar-transition-duration) var(--site-sidebar-transition-easing),
        transform var(--site-sidebar-transition-duration) var(--site-sidebar-transition-easing),
        padding var(--site-sidebar-transition-duration) var(--site-sidebar-transition-easing),
        opacity 0.24s ease-out;
}

#header.header > .profile-img,
#header.header > .logo,
#header.header > .social-links,
#header.header > .navmenu,
#header.header > .sidebar-labs {
    opacity: 1;
    transition: opacity var(--site-sidebar-content-fade-duration) ease;
}

#header.header.sidebar-layout-changing > .profile-img,
#header.header.sidebar-layout-changing > .logo,
#header.header.sidebar-layout-changing > .social-links,
#header.header.sidebar-layout-changing > .navmenu,
#header.header.sidebar-layout-changing > .sidebar-labs {
    opacity: 0;
    pointer-events: none;
}

#header.header .navmenu a,
#header.header .navmenu a:focus,
#header.header .sidebar-labs-menu summary {
    font-family: var(--site-sidebar-nav-font);
    font-size: 15px;
    font-weight: 400;
    line-height: 1.6;
    letter-spacing: -0.006em;
}

@media (min-width: 1200px) {
    .sidebar-collapse-toggle {
        display: inline-flex;
    }

    .header ~ main,
    .header ~ #footer,
    .header ~ footer {
        margin-left: var(--site-sidebar-width);
        transition:
            margin-left
            var(--site-sidebar-transition-duration)
            var(--site-sidebar-transition-easing);
    }

    html.sidebar-collapsed .header {
        width: var(--site-sidebar-rail-width);
        padding-right: 10px;
        padding-left: 10px;
        overflow-x: hidden;
    }

    html.sidebar-collapsed .header ~ main,
    html.sidebar-collapsed .header ~ #footer,
    html.sidebar-collapsed .header ~ footer {
        margin-left: var(--site-sidebar-rail-width);
    }

    html.sidebar-collapsed .header .logo,
    html.sidebar-collapsed .header .social-links {
        display: none;
        margin: 0;
    }

    html.sidebar-collapsed .header .logo {
        display: none !important;
    }

    html.sidebar-collapsed .header .profile-img img {
        width: 44px;
        margin: 18px auto 12px;
        border-width: 3px;
    }

    html.sidebar-collapsed #header.header .navmenu a,
    html.sidebar-collapsed #header.header .navmenu a:focus {
        justify-content: center;
        min-height: 48px;
        padding-right: 0;
        padding-left: 0;
        overflow: hidden;
        font-size: 0;
        letter-spacing: 0;
    }

    html.sidebar-collapsed .header .navmenu a::after,
    html.sidebar-collapsed .header .sidebar-labs-menu summary::after {
        display: none;
    }

    html.sidebar-collapsed .header .navmenu a .navicon,
    html.sidebar-collapsed .header .navmenu a:focus .navicon,
    html.sidebar-collapsed .header .sidebar-labs-menu summary .navicon {
        margin: 0;
        font-size: 21px;
    }

    html.sidebar-collapsed .header .project-selector-copy,
    html.sidebar-collapsed .header .project-selector-toggle,
    html.sidebar-collapsed .header .project-selector-options,
    html.sidebar-collapsed .header .sidebar-labs-menu summary > span,
    html.sidebar-collapsed .header .sidebar-labs-chevron,
    html.sidebar-collapsed .header .sidebar-labs-panel {
        display: none;
    }

    html.sidebar-collapsed .header .project-nav-selector summary,
    html.sidebar-collapsed .header .sidebar-labs-menu summary {
        justify-content: center;
        min-height: 48px;
        padding-right: 0;
        padding-left: 0;
    }

    html.sidebar-collapsed .header .sidebar-collapse-toggle {
        align-self: center;
        margin-right: auto;
        margin-left: auto;
    }

    html.sidebar-collapsed simple-model-viewer {
        width: calc(100% - var(--site-sidebar-rail-width));
        margin-left: var(--site-sidebar-rail-width);
    }

    #header.sidebar-auto-hidden {
        opacity: 0;
        transform: translate3d(-100%, 0, 0);
    }

    #header[data-sidebar-auto-hide] ~ main > #home {
        width: calc(100% + var(--site-sidebar-width));
        margin-left: calc(-1 * var(--site-sidebar-width));
    }

    html.sidebar-collapsed #header[data-sidebar-auto-hide] ~ main > #home {
        width: calc(100% + var(--site-sidebar-rail-width));
        margin-left: calc(-1 * var(--site-sidebar-rail-width));
    }

    #header.sidebar-auto-hidden .sidebar-collapse-toggle {
        opacity: 0;
        pointer-events: none;
    }
}

@media (max-width: 1199px) {
    .sidebar-mobile-toggle {
        display: inline-flex;
    }

    .sidebar-collapse-toggle {
        display: none;
    }

    #header.header {
        left: min(-100%, -300px);
        width: min(var(--site-sidebar-width), calc(100vw - 48px));
        transform: none;
        z-index: 1000;
    }

    #header.header.header-show {
        left: 0;
    }

    .header ~ main,
    .header ~ #footer,
    .header ~ footer {
        margin-left: 0;
    }

    html.sidebar-mobile-open {
        overflow: hidden;
    }

    html.sidebar-mobile-open body::before {
        content: '';
        position: fixed;
        inset: 0;
        z-index: 999;
        background: rgba(3, 8, 14, 0.52);
        backdrop-filter: blur(2px);
    }
}

@media (prefers-reduced-motion: reduce) {
    .header,
    .sidebar-mobile-toggle,
    .sidebar-collapse-toggle,
    .header ~ main,
    .header ~ #footer,
    .header ~ footer {
        transition-duration: 0.01ms !important;
    }
}