:root {
    --bg: #fafaf9;
    --surface: #fff;
    --text: #1c1917;
    --muted: #57534e;
    --line: #e7e5e4;
    --accent: #0b6bcb;
    --accent2: #7c3aed;
    --accent-soft: #e6f0fb;
    --radius: 14px;
    color-scheme: light
}

@media (prefers-color-scheme:dark) {
    :root:not([data-theme="light"]) {
        --bg: #0f1115;
        --surface: #171a21;
        --text: #ecece9;
        --muted: #a8a8a2;
        --line: #272b34;
        --accent: #5aa9ff;
        --accent2: #a78bfa;
        --accent-soft: #16263a;
        color-scheme: dark
    }
}

:root[data-theme="dark"] {
    --bg: #0f1115;
    --surface: #171a21;
    --text: #ecece9;
    --muted: #a8a8a2;
    --line: #272b34;
    --accent: #5aa9ff;
    --accent2: #a78bfa;
    --accent-soft: #16263a;
    color-scheme: dark
}

* {
    box-sizing: border-box
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 84px
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font: 16px/1.65 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif
}

a {
    color: var(--accent);
    text-decoration: none
}

a:hover {
    text-decoration: underline
}

:focus-visible {
    outline: 3px solid var(--accent);
    outline-offset: 3px;
    border-radius: 6px
}

.muted {
    color: var(--muted)
}

.wrap {
    max-width: 960px;
    margin: 0 auto;
    padding: 0 20px
}

#bg {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none
}

#bar {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    width: 100%;
    background: linear-gradient(90deg, var(--accent), var(--accent2));
    transform: scaleX(0);
    transform-origin: left;
    z-index: 200
}

/* header */
header.nav {
    position: sticky;
    top: 0;
    z-index: 50;
    border-bottom: 1px solid transparent;
    transition: background .3s, border-color .3s
}

header.nav.scrolled {
    background: color-mix(in srgb, var(--bg) 85%, transparent);
    backdrop-filter: blur(12px);
    border-bottom-color: var(--line)
}

.nav .wrap {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    height: 68px;
    position: relative
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text);
    font-weight: 700;
    flex: none
}

.brand:hover {
    text-decoration: none
}

.logo {
    display: grid;
    place-items: center;
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: var(--accent);
    color: #fff;
    font-size: .85rem;
    font-weight: 800;
    letter-spacing: .02em;
    transition: transform .3s
}

.brand:hover .logo {
    transform: rotate(-8deg)
}

#menu ul {
    display: flex;
    gap: 2px;
    list-style: none;
    margin: 0;
    padding: 4px;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: var(--surface)
}

#menu li a {
    display: block;
    padding: 6px 14px;
    border-radius: 999px;
    color: var(--muted);
    font-size: .9rem;
    font-weight: 500;
    white-space: nowrap;
    transition: background .2s, color .2s
}

#menu li a:hover {
    color: var(--text);
    text-decoration: none;
    background: var(--accent-soft)
}

#menu li a.active {
    color: var(--accent);
    background: var(--accent-soft)
}

.only-m {
    display: none
}

.actions {
    display: flex;
    align-items: center;
    gap: 8px;
    flex: none
}

#palBtn {
    display: flex;
    align-items: center;
    gap: 8px;
    height: 38px;
    padding: 0 8px 0 12px;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: var(--surface);
    color: var(--muted);
    font: inherit;
    font-size: .85rem;
    cursor: pointer;
    transition: border-color .2s, color .2s
}

#palBtn:hover {
    border-color: var(--accent);
    color: var(--text)
}

kbd {
    font: inherit;
    font-size: .72rem;
    padding: 1px 6px;
    border: 1px solid var(--line);
    border-radius: 6px;
    background: var(--bg)
}

#themeBtn,
#menuBtn {
    width: 38px;
    height: 38px;
    display: grid;
    place-items: center;
    border: 1px solid var(--line);
    border-radius: 50%;
    background: var(--surface);
    color: var(--text);
    cursor: pointer;
    transition: border-color .2s, color .2s
}

#themeBtn:hover,
#menuBtn:hover {
    border-color: var(--accent);
    color: var(--accent)
}

#menuBtn {
    display: none
}

.cta-nav {
    padding: 8px 18px;
    font-size: .88rem
}

.i-sun {
    display: none
}

#themeBtn[data-mode="dark"] .i-sun {
    display: block
}

#themeBtn[data-mode="dark"] .i-moon {
    display: none
}

@media (max-width:1020px) {

    #palBtn span,
    #palBtn kbd {
        display: none
    }

    #palBtn {
        width: 38px;
        padding: 0;
        justify-content: center
    }
}

@media (max-width:860px) {
    .cta-nav {
        display: none
    }

    #menuBtn {
        display: grid
    }

    #menu {
        position: absolute;
        top: 68px;
        left: 20px;
        right: 20px;
        display: none
    }

    #menu.open {
        display: block
    }

    #menu ul {
        flex-direction: column;
        border-radius: var(--radius);
        padding: 8px;
        box-shadow: 0 14px 40px rgba(0, 0, 0, .18)
    }

    .only-m {
        display: block
    }
}

/* no-JavaScript fallback: hide controls that need JS and let the nav wrap */
html:not(.js) #menuBtn,
html:not(.js) #palBtn,
html:not(.js) #themeBtn,
html:not(.js) .cta-nav {
    display: none !important
}

html:not(.js) .nav .wrap {
    flex-wrap: wrap;
    height: auto;
    padding-top: 10px;
    padding-bottom: 10px
}

html:not(.js) #menu {
    position: static;
    display: block !important
}

html:not(.js) #menu ul {
    flex-direction: row;
    flex-wrap: wrap;
    border-radius: var(--radius);
    box-shadow: none
}

html:not(.js) .only-m {
    display: block
}

/* hero */
.hero {
    padding: 80px 0 48px
}

.eyebrow {
    color: var(--accent);
    font-weight: 600;
    letter-spacing: .04em;
    font-size: .95rem;
    min-height: 1.6em
}

.caret {
    display: inline-block;
    width: 2px;
    height: 1em;
    background: var(--accent);
    margin-left: 2px;
    vertical-align: -2px;
    animation: blink 1s steps(1) infinite
}

@keyframes blink {
    50% {
        opacity: 0
    }
}

.hero h1 {
    font-size: clamp(2.2rem, 6vw, 3.6rem);
    line-height: 1.1;
    margin: .3em 0 .4em
}

.grad {
    color: var(--accent)
}

.lead {
    font-size: 1.15rem;
    color: var(--muted);
    max-width: 640px;
    margin: 0 0 24px
}

.cta {
    display: flex;
    flex-wrap: wrap;
    gap: 10px
}

.btn {
    display: inline-block;
    padding: 10px 18px;
    border-radius: 999px;
    border: 1px solid var(--line);
    background: var(--surface);
    color: var(--text);
    font-weight: 600;
    font-size: .95rem;
    transition: transform .2s, box-shadow .2s
}

.btn.primary {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff
}

.btn:hover {
    text-decoration: none;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, .15)
}

.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 12px;
    margin-top: 40px
}

.stat {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 16px
}

.stat b {
    display: block;
    font-size: 1.6rem;
    color: var(--accent)
}

.stat span {
    color: var(--muted);
    font-size: .9rem
}

/* sections & cards */
section {
    padding: 48px 0;
    border-top: 1px solid var(--line)
}

section.hero {
    border-top: 0
}

section h2 {
    font-size: 1.6rem;
    margin: 0 0 24px
}

.card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 22px
}

.timeline {
    list-style: none;
    margin-bottom: 2rem;
    padding: 0 0 0 22px;
    border-left: 2px solid var(--line)
}

.timeline>li {
    position: relative
}

.timeline>li::before {
    content: "";
    position: absolute;
    left: -30px;
    top: 26px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 0 4px var(--accent-soft)
}

.job-head {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 6px
}

.job-head h3 {
    margin: 0;
    font-size: 1.15rem
}

.job-head time {
    color: var(--muted);
    font-size: .95rem
}

.card ul {
    padding-left: 20px;
    margin: 12px 0 0
}

.card li {
    margin: 6px 0
}

/* projects */
.filters {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px
}

.filters button {
    border: 1px solid var(--line);
    background: var(--surface);
    color: var(--text);
    padding: 6px 14px;
    border-radius: 999px;
    cursor: pointer;
    font: inherit;
    font-size: .9rem
}

.filters button[aria-pressed="true"] {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
    list-style: none;
    padding: 0;
    margin: 0
}

.grid>li {
    margin: 0;
    padding: 22px
}

.proj {
    display: flex;
    flex-direction: column;
    gap: 8px;
    transition: transform .15s ease-out, box-shadow .3s, border-color .3s;
    will-change: transform
}

.proj:hover {
    border-color: var(--accent);
    box-shadow: 0 14px 30px color-mix(in srgb, var(--accent) 18%, transparent)
}

.proj h3 {
    margin: 0;
    font-size: 1.05rem
}

.proj p {
    margin: 0;
    color: var(--muted);
    font-size: .95rem;
    flex: 1
}

.tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px
}

.tag {
    font-size: .78rem;
    padding: 2px 10px;
    border-radius: 999px;
    background: var(--accent-soft);
    color: var(--accent);
    font-weight: 600
}

.tag.status {
    background: transparent;
    border: 1px solid var(--line);
    color: var(--muted)
}

[hidden] {
    display: none !important
}

/* achievements / education pair */
.pair {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 16px
}

.pair h3 {
    margin: 0 0 10px;
    font-size: 1rem
}

.pair p {
    margin: 0 0 10px
}

/* skills */
.bento {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px
}

.bc {
    padding: 16px 18px;
    transition: border-color .2s, transform .2s
}

.bc:hover {
    border-color: var(--accent);
    transform: translateY(-2px)
}

.bc.w2 {
    grid-column: span 2
}

.bc.w3 {
    grid-column: span 3
}

.bc h3 {
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 0 0 8px;
    font-size: 1rem
}

.bc h3 svg {
    color: var(--accent);
    flex: none
}

.bc ul {
    display: flex;
    flex-wrap: wrap;
    gap: 2px 0;
    list-style: none;
    padding: 0;
    margin: 0;
    color: var(--muted)
}

.bc li {
    margin: 0
}

.bc li:not(:last-child)::after {
    content: "·";
    margin: 0 .55em
}

@media (max-width:700px) {
    .bento {
        grid-template-columns: 1fr
    }

    .bc.w2,
    .bc.w3 {
        grid-column: auto
    }
}

dl.contact {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 8px 18px;
    margin: 0
}

dl.contact dt {
    color: var(--muted)
}

dl.contact dd {
    margin: 0
}

footer {
    padding: 28px 0 48px;
    color: var(--muted);
    font-size: .9rem;
    border-top: 1px solid var(--line)
}

/* command palette */
#pal {
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--surface);
    color: var(--text);
    padding: 0;
    width: min(520px, 92vw);
    margin-top: 12vh;
    box-shadow: 0 30px 80px rgba(0, 0, 0, .4)
}

#pal::backdrop {
    background: rgba(0, 0, 0, .45);
    backdrop-filter: blur(3px)
}

#palIn {
    width: 100%;
    border: 0;
    border-bottom: 1px solid var(--line);
    background: transparent;
    color: inherit;
    font: inherit;
    font-size: 1.05rem;
    padding: 16px 18px;
    outline: none
}

#palList {
    list-style: none;
    margin: 0;
    padding: 6px;
    max-height: 50vh;
    overflow: auto
}

#palList li {
    margin: 0
}

#palList a {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    padding: 10px 12px;
    border-radius: 8px;
    color: var(--text)
}

#palList a small {
    color: var(--muted)
}

#palList a:hover,
#palList a.sel {
    background: var(--accent-soft);
    text-decoration: none
}

/* motion */
@media (prefers-reduced-motion:no-preference) {
    .js .reveal {
        opacity: 0;
        transform: translateY(16px);
        transition: opacity .6s, transform .6s
    }

    .js .reveal.in {
        opacity: 1;
        transform: none
    }

    .grid>li {
        opacity: 0;
        animation: pop .5s forwards
    }

    @keyframes pop {
        to {
            opacity: 1
        }
    }
}

@media (prefers-reduced-motion:reduce) {
    .caret {
        animation: none
    }

    .grid>li {
        opacity: 1
    }
}

@media print {

    header.nav,
    .filters,
    .cta,
    #bar,
    #bg,
    #pal {
        display: none
    }

    body {
        background: #fff;
        color: #000
    }

    section {
        padding: 16px 0;
        break-inside: avoid
    }
}