@font-face {
    font-family: "BDOGrotesk";
    src: url("fonts/BDOGrotesk-Light.otf") format("opentype");
    font-weight: 300;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: "BDOGrotesk";
    src: url("fonts/BDOGrotesk-Medium.otf") format("opentype");
    font-weight: 500;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: "BDOGrotesk";
    src: url("fonts/BDOGrotesk-Bold.otf") format("opentype");
    font-weight: 700;
    font-style: normal;
    font-display: swap;
}

:root {
    color-scheme: dark;
    --background: #151515;
    --sidebar: #111111;
    --sidebar-mobile: #1b1b1b;
    --surface: #111111;
    --surface-raised: #1b1b1b;
    --surface-soft: #1f1f1f;
    --border: #7d7d7d;
    --border-soft: #303030;
    --text: #dedcdc;
    --muted: #9a9a9a;
    --accent: #5297ff;
    --accent-soft: #5297ffcc;
}

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

html {
    background: var(--background);
    scroll-behavior: smooth;
}

body {
    min-height: 100vh;
    background: var(--background);
    color: var(--text);
    font-family: "BDOGrotesk", sans-serif;
    font-weight: 300;
}

a {
    color: inherit;
}

.skip-link {
    position: fixed;
    top: 0.75rem;
    left: 0.75rem;
    z-index: 100;
    padding: 0.7rem 1rem;
    border-radius: 0.4rem;
    background: var(--accent);
    color: #0a0a0a;
    font-weight: 500;
    transform: translateY(-150%);
    transition: transform 160ms ease;
}

.skip-link:focus {
    transform: translateY(0);
}

.vertical-header {
    color: var(--text);
}

.profile {
    width: 100%;
    text-align: center;
}

.profile-img {
    width: 120px;
    height: 120px;
    display: block;
    margin: 0 auto 0.35rem;
    border-radius: 50%;
    object-fit: cover;
}

.name {
    font-size: 1.3rem;
    font-weight: 500;
}

.left-align-container {
    width: max-content;
    max-width: 100%;
    margin: 0 auto;
    text-align: left;
}

.identity {
    margin-top: 0.35rem;
}

.info-line {
    position: relative;
    padding-left: 0.9rem;
    color: var(--muted);
    font-size: 0.9rem;
    white-space: nowrap;
}

.info-line::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 0;
    width: 0.35rem;
    height: 0.35rem;
    border-radius: 50%;
    background: var(--accent);
    transform: translateY(-50%);
}

.menu ul {
    list-style: none;
}

.menu a {
    display: flex;
    align-items: center;
    color: var(--text);
    font-size: 1.05rem;
    text-decoration: none;
}

.menu i {
    width: 24px;
    margin-right: 0.75rem;
    text-align: center;
}

.menu a:hover,
.menu a[aria-current="page"] {
    text-decoration: underline;
    text-decoration-color: var(--accent);
    text-underline-offset: 0.3rem;
}

.menu a[aria-current="page"] {
    font-weight: 500;
}

.external-marker {
    margin-left: 0.15rem;
    color: var(--accent);
    font-size: 0.8em;
}

.architecture-visual {
    min-height: 8.5rem;
    display: grid;
    grid-template-columns: minmax(4.6rem, 1fr) minmax(1rem, 0.35fr) minmax(5.5rem, 1fr) minmax(1rem, 0.35fr) minmax(4.6rem, 1fr);
    align-items: center;
    padding: 1.25rem;
    overflow: hidden;
    border: 1px solid var(--border-soft);
    border-radius: 0.75rem;
    background:
        linear-gradient(rgba(82, 151, 255, 0.045) 1px, transparent 1px),
        linear-gradient(90deg, rgba(82, 151, 255, 0.045) 1px, transparent 1px),
        #151515;
    background-size: 20px 20px;
}

.architecture-node {
    display: grid;
    min-height: 3.2rem;
    place-items: center;
    padding: 0.65rem 0.4rem;
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    background: var(--surface-soft);
    color: var(--muted);
    font-size: clamp(0.72rem, 0.8vw, 0.9rem);
    text-align: center;
}

.architecture-node-accent {
    border-color: var(--accent);
    color: var(--text);
    box-shadow: 0 0 1.5rem rgba(82, 151, 255, 0.16);
}

.architecture-line {
    height: 1px;
    background: linear-gradient(90deg, var(--border), var(--accent));
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
}

@media (min-width: 1024px) {
    body {
        display: flex;
    }

    .vertical-header {
        position: fixed;
        z-index: 10;
        width: 20%;
        height: 100vh;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: flex-start;
        overflow-y: auto;
        padding: 4.7rem 1.25rem 2rem;
        background: var(--sidebar);
    }

    .menu ul {
        display: grid;
        gap: 2.1rem;
        padding-top: 3.4rem;
    }

    .content {
        width: 80%;
        min-height: 100vh;
        margin-left: 20%;
    }
}

@media (max-width: 1023px) {
    .vertical-header {
        padding: 2.25rem 1rem 1.25rem;
        background: var(--sidebar-mobile);
    }

    .profile-img {
        width: 105px;
        height: 105px;
        animation: fade-up 700ms ease both;
    }

    .name,
    .identity,
    .menu {
        animation: fade-up 700ms ease both;
    }

    .identity {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 0.2rem 0.8rem;
        text-align: center;
    }

    .info-line {
        margin: 0;
    }

    .left-align-container {
        width: 100%;
    }

    .menu {
        margin-top: 1.5rem;
    }

    .menu ul {
        width: min(100%, 34rem);
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 0.65rem;
        margin: 0 auto;
    }

    .menu li:last-child:nth-child(odd) {
        grid-column: 1 / -1;
    }

    .menu a {
        min-height: 2.65rem;
        justify-content: center;
        padding: 0.45rem 0.7rem;
        border: 1px solid var(--border);
        border-radius: 0.45rem;
        background: var(--surface-soft);
        font-size: 0.95rem;
    }

    .content {
        width: 100%;
    }
}

@media (max-width: 460px) {
    .menu ul {
        grid-template-columns: 1fr;
    }

    .menu li:last-child:nth-child(odd) {
        grid-column: auto;
    }

    .architecture-visual {
        grid-template-columns: 1fr;
        gap: 0.55rem;
    }

    .architecture-line {
        width: 1px;
        height: 1rem;
        margin: 0 auto;
        background: linear-gradient(var(--border), var(--accent));
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        animation-duration: 1ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 1ms !important;
    }
}

@keyframes fade-up {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}