/* Kendrick Yang — Entry Stamps.
   A career read like a well-travelled passport. Security-paper ground under
   drifting contour linework, passport-navy ink, one stamp ink per field.
   Archivo carries every voice across its width axis: expanded for the name,
   normal for reading, condensed for stamp and field caps. Martian Mono is
   reserved for dates and the machine-readable strip. */

:root {
    --paper: #EEF0E8;
    --paper-deep: #E4E8DC;
    --ink: #1D2945;
    --ink-soft: #46506B;
    --rule: #C3C9BB;
    --rule-firm: #8F9887;

    /* Stamp inks, one per field. Each holds 4.5:1 or better on --paper. */
    --aws: #1F5A86;
    --security: #A8352A;
    --automation: #2A6847;
    --microsoft: #5A4390;
    --linux: #7F530E;
    --platform: #4C5664;

    --current: var(--security);

    --sans: "Archivo", system-ui, sans-serif;
    --mono: "Martian Mono", ui-monospace, monospace;

    /* Two small steps below body: condensed caps labels, and mono data. */
    --label: 0.75rem;
    --data: 0.85rem;

    --gut: clamp(1rem, 4vw, 4rem);
    --max: 76rem;
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

[data-ink="aws"] { --c: var(--aws); }
[data-ink="security"] { --c: var(--security); }
[data-ink="automation"] { --c: var(--automation); }
[data-ink="microsoft"] { --c: var(--microsoft); }
[data-ink="linux"] { --c: var(--linux); }
[data-ink="platform"] { --c: var(--platform); }

*, *::before, *::after { box-sizing: border-box; }

html {
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
    scroll-padding-top: 5rem;
    scrollbar-color: var(--rule-firm) var(--paper);
}

body {
    margin: 0;
    background: var(--paper);
    color: var(--ink);
    font-family: var(--sans);
    font-size: clamp(1rem, 0.97rem + 0.18vw, 1.0875rem);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    font-variant-numeric: tabular-nums;
}

::selection { background: color-mix(in srgb, var(--security) 22%, transparent); color: var(--ink); }

h1, h2, h3, h4 { margin: 0; font-weight: 700; text-wrap: balance; }

p { margin: 0; }

a { color: inherit; text-underline-offset: 0.22em; text-decoration-thickness: 1px; }

:focus-visible { outline: 2px solid var(--security); outline-offset: 3px; }

.defs { position: absolute; width: 0; height: 0; overflow: hidden; }

.skip {
    position: absolute;
    left: -9999px;
    z-index: 30;
    padding: 0.8rem 1.2rem;
    background: var(--ink);
    color: var(--paper);
    font-weight: 600;
}
.skip:focus { left: 0.5rem; top: 0.5rem; }

/* -------- Contour terrain: the security-print field -------- */

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

/* -------- Top bar -------- */

.top {
    position: sticky;
    top: 0;
    z-index: 20;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0 2rem;
    padding: 0.35rem var(--gut);
    background: var(--paper);
    border-bottom: 1px solid var(--rule);
}

.top__mark {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    min-height: 44px;
    text-decoration: none;
    font-weight: 700;
    font-stretch: 112%;
    letter-spacing: -0.01em;
}

.top__rosette { width: 28px; height: 28px; flex: none; }

.top__nav { display: flex; gap: 0 1.5rem; }

.top__nav a {
    display: inline-flex;
    align-items: center;
    min-height: 44px;
    color: var(--ink-soft);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    border-bottom: 2px solid transparent;
    transition: color 140ms linear, border-color 140ms linear;
}
.top__nav a:hover { color: var(--ink); border-bottom-color: var(--rule-firm); }
.top__nav a[aria-current="true"] { color: var(--ink); border-bottom-color: var(--current); }

/* -------- Data page (first viewport) -------- */

main { max-width: var(--max); margin: 0 auto; padding: 0 var(--gut); }

.datapage { padding: clamp(1.25rem, 3.5vh, 2.25rem) 0 clamp(3rem, 8vh, 5rem); }

.datapage__sheet {
    display: grid;
    grid-template-columns: clamp(11rem, 22vw, 17rem) 1fr;
    gap: clamp(1.25rem, 3vw, 2.75rem) clamp(1.5rem, 4vw, 3.5rem);
    align-items: start;
    padding: clamp(1.25rem, 3vw, 2.25rem) clamp(1.5rem, 3.5vw, 3rem) clamp(0.9rem, 2vw, 1.25rem);
    background: color-mix(in srgb, var(--paper-deep) 86%, transparent);
    border: 1px solid var(--rule-firm);
}

.datapage__side { display: grid; justify-items: center; }
.datapage__stamp { width: 78%; margin-top: -1.75rem; color: var(--security); position: relative; z-index: 1; }
.datapage__stamp svg { display: block; width: 100%; height: auto; overflow: visible; }

.datapage__photo {
    position: relative;
    width: 100%;
    aspect-ratio: 4 / 5;
    border: 1px solid var(--rule-firm);
    background: var(--paper);
    display: grid;
    place-items: center;
    overflow: hidden;
}
.datapage__photo svg { width: 92%; height: auto; }
.datapage__initials {
    position: absolute;
    font-size: clamp(1.6rem, 3vw, 2.4rem);
    font-weight: 800;
    font-stretch: 125%;
    letter-spacing: -0.02em;
    color: var(--ink);
    background: var(--paper);
    padding: 0.12em 0.3em;
    line-height: 1;
}

h1 {
    font-size: clamp(2.5rem, 1.4rem + 4.4vw, 5.25rem);
    font-weight: 800;
    font-stretch: 125%;
    line-height: 0.95;
    letter-spacing: -0.035em;
}

.datapage__occupation {
    margin-top: 0.7rem;
    line-height: 1.25;
    font-size: clamp(1.15rem, 1rem + 0.8vw, 1.6rem);
    font-weight: 600;
    letter-spacing: -0.01em;
}

.fields {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0.8rem 1.75rem;
    margin: clamp(1rem, 2.5vh, 1.5rem) 0 0;
    padding-top: clamp(0.9rem, 2vh, 1.2rem);
    border-top: 1px solid var(--rule-firm);
}
.field--wide { grid-column: span 2; }
.field--full { grid-column: 1 / -1; }
.field dt {
    font-size: var(--label);
    font-weight: 600;
    font-stretch: 75%;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--ink-soft);
}
.field dd { margin: 0.15rem 0 0; font-weight: 600; line-height: 1.35; }

.datapage__summary {
    max-width: 62ch;
    margin-top: clamp(1rem, 2.5vh, 1.4rem);
    font-size: clamp(1.02rem, 0.98rem + 0.3vw, 1.15rem);
    color: var(--ink-soft);
}

.action {
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
    min-height: 48px;
    margin-top: clamp(1rem, 2.5vh, 1.4rem);
    padding: 0.7rem 1.3rem;
    background: var(--ink);
    color: var(--paper);
    text-decoration: none;
    font-weight: 600;
    font-size: 1.02rem;
    transition: background-color 140ms linear;
}
.action svg { width: 24px; height: 12px; transition: transform 200ms var(--ease-out); }
.action:hover { background: #111a30; }
.action:hover svg { transform: translateX(4px); }

.mrz {
    grid-column: 1 / -1;
    display: grid;
    gap: 0.15rem;
    margin: 0 calc(-1 * clamp(1.5rem, 3.5vw, 3rem));
    padding: 0.7rem clamp(1.5rem, 3.5vw, 3rem) 0;
    border-top: 1px dashed var(--rule-firm);
    font-family: var(--mono);
    font-size: clamp(0.6rem, 0.45rem + 0.55vw, 0.92rem);
    letter-spacing: 0.18em;
    color: var(--ink-soft);
    white-space: nowrap;
    overflow: hidden;
}

/* -------- Section scaffolding -------- */

section[id] { padding: clamp(3.5rem, 9vh, 6rem) 0; border-top: 1px solid var(--rule); }

.section-head { max-width: 46rem; margin-bottom: clamp(2rem, 5vh, 3rem); }

h2 {
    font-size: clamp(2rem, 1.4rem + 2.4vw, 3.25rem);
    font-weight: 800;
    font-stretch: 118%;
    line-height: 1;
    letter-spacing: -0.03em;
}

.lede { margin-top: 0.8rem; max-width: 60ch; color: var(--ink-soft); font-size: 1.05rem; }

/* -------- Experience -------- */

.experience__body { display: grid; grid-template-columns: 4.5rem 1fr; gap: clamp(1rem, 3vw, 2.5rem); }

.rail {
    position: sticky;
    top: 6.5rem;
    align-self: start;
    margin: 0;
    padding: 0;
    list-style: none;
    font-family: var(--mono);
    font-size: var(--data);
    color: var(--ink-soft);
    border-left: 1px solid var(--rule-firm);
}
.rail li {
    position: relative;
    padding: 0.35rem 0 0.35rem 0.9rem;
    transition: color 200ms linear;
}
.rail li::before {
    content: "";
    position: absolute;
    left: -4px;
    top: 50%;
    width: 7px;
    height: 7px;
    margin-top: -3.5px;
    border: 1px solid var(--rule-firm);
    background: var(--paper);
    transform: rotate(45deg);
}
.rail li.is-active { color: var(--current); font-weight: 500; }
.rail li.is-active::before { border-color: var(--current); background: var(--current); }

.entries { margin: 0; padding: 0; list-style: none; }

.entry {
    display: grid;
    grid-template-columns: clamp(8.5rem, 14vw, 11rem) 1fr;
    gap: clamp(1.25rem, 3.5vw, 3rem);
    padding: clamp(2rem, 5vh, 3rem) 0;
    border-bottom: 1px dashed var(--rule-firm);
}
.entry:first-child { padding-top: 0; }

.entry__stamp { color: var(--c); }
.entry__stamp svg { display: block; width: 100%; height: auto; overflow: visible; }

.entry__when { font-family: var(--mono); font-size: var(--data); color: var(--ink-soft); display: flex; flex-wrap: wrap; align-items: center; gap: 0.3rem 0.6rem; }

.current {
    display: inline-block;
    padding: 0.2rem 0.5rem 0.15rem;
    border: 1.5px solid var(--current);
    color: var(--current);
    font-family: var(--sans);
    font-size: var(--label);
    font-weight: 700;
    font-stretch: 80%;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    transform: rotate(-2deg);
}

.entry h3 {
    margin-top: 0.45rem;
    font-size: clamp(1.45rem, 1.15rem + 1.1vw, 2.1rem);
    font-weight: 700;
    font-stretch: 110%;
    line-height: 1.08;
    letter-spacing: -0.02em;
}
.entry__org { margin-top: 0.25rem; font-weight: 600; color: var(--c); }

.entry ul { margin: 1rem 0 0; padding: 0; list-style: none; max-width: 68ch; }
.entry ul li { position: relative; padding-left: 1.3rem; margin-top: 0.45rem; }
.entry ul li::before {
    content: "";
    position: absolute;
    left: 0.1rem;
    top: 0.6em;
    width: 0.42rem;
    height: 0.42rem;
    border: 1.5px solid var(--c);
    transform: rotate(45deg);
}

.entry--brief h3 { font-size: clamp(1.2rem, 1.05rem + 0.6vw, 1.5rem); }
.entry--brief .entry__stamp svg { width: 78%; }

.entry__fields {
    margin-top: 1rem;
    color: var(--ink-soft);
    font-size: var(--label);
    font-weight: 600;
    font-stretch: 80%;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

/* -------- Certifications -------- */

.visas { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(1rem, 3vw, 2rem); margin: 0; padding: 0; list-style: none; }

.visa {
    position: relative;
    display: grid;
    gap: 0.4rem;
    padding: clamp(1.25rem, 3vw, 2rem);
    color: var(--c);
    background: color-mix(in srgb, var(--paper) 72%, transparent);
    isolation: isolate;
    overflow: hidden;
}
.visa::before, .visa::after, .trip h3::before {
    content: "";
    position: absolute;
    pointer-events: none;
    filter: url(#ink);
}
.visa::before { inset: 0; border: 2.5px solid currentColor; }
.visa::after { inset: 7px; border: 1px solid currentColor; }
.visa__print {
    position: absolute;
    right: -3rem;
    top: 50%;
    width: 17rem;
    height: auto;
    transform: translateY(-50%);
    opacity: 0.2;
    z-index: -1;
}
.visa:nth-child(1) { transform: rotate(-0.8deg); }
.visa:nth-child(2) { transform: rotate(0.6deg); }
.visa__name { font-size: clamp(1.2rem, 1rem + 0.9vw, 1.6rem); font-weight: 800; font-stretch: 90%; line-height: 1.15; letter-spacing: -0.01em; }
.visa__issuer { font-size: var(--label); font-weight: 600; font-stretch: 75%; letter-spacing: 0.12em; text-transform: uppercase; }

.certs__more {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 clamp(1.5rem, 4vw, 3rem);
    margin: clamp(1.5rem, 4vh, 2.25rem) 0 0;
    padding: 0;
    list-style: none;
}
.certs__more li { padding: 0.8rem 0; border-bottom: 1px dashed var(--rule-firm); font-weight: 500; }

/* -------- Side projects -------- */

.trips { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(2rem, 5vw, 3.5rem) clamp(2rem, 5vw, 4.5rem); align-items: start; }
.trip:first-child { grid-row: span 3; }

.trip h3 {
    position: relative;
    display: inline-block;
    margin-bottom: 0.4rem;
    padding: 0.3rem 0.7rem 0.25rem;
    color: var(--c);
    font-size: 0.95rem;
    font-weight: 800;
    font-stretch: 72%;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    transform: rotate(-1.5deg);
}
.trip h3::before { inset: 0; border: 2px solid currentColor; }
.trip ul { margin: 0; padding: 0; list-style: none; }
.trip li { padding: 1.1rem 0; border-bottom: 1px dashed var(--rule-firm); }
.trip li:last-child { border-bottom: 0; }
.trip h4 { font-size: 1.15rem; font-weight: 700; font-stretch: 105%; letter-spacing: -0.01em; }
.trip p { margin-top: 0.3rem; max-width: 62ch; color: var(--ink-soft); }

.reading {
    max-width: 70ch;
    margin-top: clamp(2.5rem, 6vh, 3.5rem);
    padding-top: 1.25rem;
    border-top: 1px solid var(--rule);
    color: var(--ink-soft);
}
.reading strong { color: var(--ink); font-weight: 700; }

/* -------- Skills -------- */

.skill-list { margin: 0; }
.skill {
    display: grid;
    grid-template-columns: 16rem 1fr;
    gap: 0.4rem 2rem;
    padding: 1.1rem 0;
    border-bottom: 1px dashed var(--rule-firm);
}
.skill:first-child { border-top: 1px dashed var(--rule-firm); }
.skill dt { display: flex; align-items: center; gap: 0.7rem; font-weight: 700; font-stretch: 105%; color: var(--c); }
.skill dd { margin: 0; max-width: 70ch; color: var(--ink-soft); }
.swatch { width: 14px; height: 14px; flex: none; border: 2px solid var(--c); border-radius: 50%; box-shadow: inset 0 0 0 2px var(--paper), inset 0 0 0 7px var(--c); }

/* -------- Footer -------- */

.foot {
    max-width: var(--max);
    margin: 0 auto;
    padding: clamp(3.5rem, 10vh, 6rem) var(--gut) clamp(2.5rem, 6vh, 3.5rem);
}
.foot__line { font-size: clamp(1.6rem, 1.2rem + 1.8vw, 2.6rem); font-weight: 800; font-stretch: 115%; letter-spacing: -0.03em; line-height: 1.05; }
.action--large { font-size: 1.1rem; padding: 0.85rem 1.5rem; }
.foot__fine { max-width: 60ch; margin-top: clamp(2rem, 5vh, 3rem); color: var(--ink-soft); font-size: 0.92rem; }
.foot__meta { display: block; margin-top: 0.4rem; font-family: var(--mono); font-size: var(--data); }

/* -------- Responsive -------- */

@media (max-width: 1000px) {
    .datapage__sheet { grid-template-columns: 1fr; }
    .datapage__side { justify-items: start; }
    .datapage__photo { width: clamp(6rem, 24vw, 9rem); }
    .datapage__stamp { display: none; }
    .experience__body { grid-template-columns: 1fr; }
    .rail { display: none; }
    .trips { grid-template-columns: 1fr; }
    .trip:first-child { grid-row: auto; }
}

@media (max-width: 720px) {
    .top { flex-wrap: wrap; padding-top: 0.15rem; padding-bottom: 0; }
    .top__nav { width: 100%; justify-content: space-between; gap: 0; }
    .top__nav a { font-size: 0.9rem; }
    .datapage__sheet { padding: 1.1rem 1.25rem 0.8rem; gap: 0.9rem; }
    .datapage__photo { width: 4.75rem; aspect-ratio: 1; }
    .datapage__photo svg { width: 100%; }
    .datapage__initials { font-size: 1.05rem; }
    .datapage__main { display: flex; flex-direction: column; }
    .datapage__main .fields { order: 5; }
    .mrz { margin: 0 -1.25rem; padding: 0.6rem 1.25rem 0; }
    .fields { grid-template-columns: 1fr 1fr; gap: 0.9rem 1.25rem; }
    .field--wide { grid-column: 1 / -1; }
    .entry { grid-template-columns: 1fr; gap: 1rem; }
    .entry__stamp { width: 8.5rem; }
    .entry--brief .entry__stamp { width: 7.5rem; }
    .visas, .certs__more { grid-template-columns: 1fr; }
    .skill { grid-template-columns: 1fr; }
}

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