/* Ratchaphon Phonpoon — portfolio. KMUTT orange on white (light only for now). */
:root {
  --bg: #ffffff;
  --tint: #fff4ee;          /* orange-tinted panel */
  --tint-2: #ffe8dc;
  --ink: #16181d;
  --body: #3a3f48;
  --muted: #6a707b;
  --rule: #ebe4df;
  --orange: #ef5a24;        /* KMUTT orange: fills, strokes, large type */
  --orange-ink: #c2410c;    /* orange that passes contrast for small text */
  --navy: #0f1724;
  --red-pen: #d6281e;       /* redline annotations */
  --display: "Bricolage Grotesque", "Segoe UI", system-ui, sans-serif;
  --sans: "Instrument Sans", "Anuphan", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, Consolas, monospace;
  --hand: "Kalam", "Comic Sans MS", cursive;
  color-scheme: light;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { transition: none !important; } }
body { margin: 0; background: var(--bg); color: var(--body); font: 17px/1.65 var(--sans); padding-inline: 20px; }
.wrap { max-width: 1120px; margin-inline: auto; }
.narrow { max-width: 760px; }
h1, h2, h3 { color: var(--ink); margin: 0; text-wrap: balance; font-family: var(--display); }
p { margin: 0; }
a { color: var(--orange-ink); text-underline-offset: 3px; }
a:focus-visible, button:focus-visible, input:focus-visible, summary:focus-visible { outline: 2.5px solid var(--orange); outline-offset: 3px; border-radius: 3px; }
img { max-width: 100%; display: block; }
strong { color: var(--ink); font-weight: 600; }

/* ---------- top bar ---------- */
.top { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 20; background: rgba(255,255,255,.92); backdrop-filter: blur(10px); border-bottom: 1px solid var(--rule); margin-inline: -20px; padding-inline: 20px; }
.top .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; height: 60px; }
.brand { display: flex; align-items: center; gap: 10px; font: 700 18px/1 var(--display); color: var(--ink); text-decoration: none; white-space: nowrap; }
.brand i { width: 26px; height: 26px; border-radius: 7px; background: var(--orange); color: #fff; display: grid; place-items: center; font: 700 13px/1 var(--display); font-style: normal; }
.top nav { display: flex; gap: 22px; font-size: 15px; font-weight: 500; }
.top nav a { color: var(--body); text-decoration: none; white-space: nowrap; }
.top nav a:hover { color: var(--orange-ink); }
.top nav .cv { color: var(--orange-ink); font-weight: 600; }
@media (max-width: 760px) {
  .top .wrap { flex-wrap: wrap; height: auto; padding-block: 10px 0; row-gap: 4px; }
  .top nav { order: 3; width: 100%; flex-wrap: wrap; gap: 4px 18px; padding-block: 4px 10px; font-size: 14.5px; }
  .section { scroll-margin-top: 100px; }
}

/* ---------- shared bits ---------- */
.eyebrow { font: 500 12.5px/1.2 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--orange-ink); }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 12px 20px; border-radius: 999px; font: 600 15px/1 var(--sans); text-decoration: none; border: 1.5px solid var(--ink); color: var(--ink); background: #fff; cursor: pointer; transition: transform .15s ease, background .15s ease; }
.btn:hover { transform: translateY(-1px); }
.btn.primary { background: var(--orange); border-color: var(--orange); color: #fff; }
.btn.primary:hover { background: #e14d18; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; }
.arrow::after { content: "↗"; font-family: var(--sans); }
.redline { font: 400 21px/1.2 var(--hand); color: var(--red-pen); }
.todo { font: 400 16px/1.4 var(--hand); color: var(--red-pen); border: 1.5px dashed var(--red-pen); border-radius: 6px; padding: 4px 10px; display: inline-block; }
.section { padding-block: 88px; border-top: 1px solid var(--rule); scroll-margin-top: 60px; }
.section-head { display: grid; gap: 10px; margin-bottom: 44px; max-width: 640px; }
.section-head h2 { font-size: clamp(30px, 4.4vw, 44px); font-weight: 700; line-height: 1.08; letter-spacing: -.015em; }

/* photo slot: shows its label until the image file exists */
.slot { position: relative; background: var(--tint); border: 1.5px dashed #f2b69c; border-radius: 16px; overflow: hidden; display: grid; place-items: center; text-align: center; color: var(--orange-ink); font: 500 13px/1.4 var(--mono); padding: 12px; }
.slot img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.slot:has(img) { border-style: solid; border-color: var(--rule); }

/* ---------- home: hero ---------- */
.hero { display: grid; grid-template-columns: 1.25fr .75fr; gap: 56px; align-items: center; padding-block: 72px 64px; }
@media (max-width: 860px) { .hero { grid-template-columns: 1fr; gap: 36px; padding-block: 48px; } }
.hero h1 { font-size: clamp(46px, 7.4vw, 88px); font-weight: 800; line-height: .98; letter-spacing: -.03em; margin-top: 8px; }
.hero h1 .dot { color: var(--orange); }
.nick { display: flex; align-items: center; gap: 8px; transform: rotate(-2deg); transform-origin: left; }
.nick svg { flex: none; }
.hero .intro { font-size: clamp(18px, 2vw, 20px); max-width: 58ch; margin-top: 22px; }
.hero .actions { margin-top: 30px; }
.portrait img { object-position: center 20%; }
.portrait { aspect-ratio: 4 / 5; border-radius: 28px 28px 28px 120px; box-shadow: 14px 14px 0 var(--orange); }
@media (max-width: 860px) {
  /* phones & tablets: photo sits beside the name instead of under the intro */
  .hero { grid-template-columns: 1fr auto; grid-template-areas: "nick nick" "name photo" "intro intro" "act act"; column-gap: 16px; row-gap: 0; align-items: center; }
  .hero > div:first-child { display: contents; }
  .hero .nick { grid-area: nick; margin-bottom: 6px; }
  .hero h1 { grid-area: name; margin-top: 0; font-size: clamp(30px, 8.4vw, 64px); }
  .hero .intro { grid-area: intro; }
  .hero .actions { grid-area: act; }
  .portrait { grid-area: photo; width: clamp(96px, 27vw, 210px); border-radius: 16px 16px 16px 44px; box-shadow: 7px 7px 0 var(--orange); margin-right: 7px; font-size: 10px; }
}

.facts { display: grid; grid-template-columns: repeat(4, 1fr); border: 1.5px solid var(--ink); border-radius: 14px; overflow: hidden; margin-bottom: 72px; }
.facts div { padding: 16px 18px; border-left: 1px solid var(--rule); }
.facts div:first-child { border-left: 0; }
.facts dt { font: 500 11.5px/1.2 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.facts dd { margin: 6px 0 0; font: 600 16.5px/1.3 var(--sans); color: var(--ink); }
@media (max-width: 760px) {
  .facts { grid-template-columns: 1fr 1fr; }
  .facts div:nth-child(3) { border-left: 0; }
  .facts div:nth-child(n+3) { border-top: 1px solid var(--rule); }
}

/* ---------- home: work cards ---------- */
.works { display: grid; grid-template-columns: 1fr 1fr; gap: 56px 48px; }
.works .card:nth-child(even) { margin-top: 96px; }
@media (max-width: 760px) { .works { grid-template-columns: 1fr; gap: 48px; } .works .card:nth-child(even) { margin-top: 0; } }
.card { display: grid; gap: 14px; text-decoration: none; color: inherit; }
.card .art { background: var(--tint); border-radius: 22px; aspect-ratio: 16 / 10; display: grid; place-items: center; overflow: hidden; transition: background .2s ease; }
.card:nth-child(4n+1) .art { border-radius: 72px 22px 22px 22px; }
.card:nth-child(4n+2) .art { border-radius: 22px 22px 72px 22px; }
.card:nth-child(4n+3) .art { border-radius: 22px 72px 22px 22px; }
.card .art svg { width: 78%; height: auto; }
.card:hover .art { background: var(--tint-2); }
.card .tag { font: 500 12px/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); margin-top: 6px; }
.card h3 { font-size: clamp(24px, 2.6vw, 30px); font-weight: 600; line-height: 1.15; }
.card h3::after { content: " ↗"; color: var(--orange); font-family: var(--sans); font-size: .8em; }
.card p { max-width: 50ch; }
.card:hover h3 { color: var(--orange-ink); }
/* line-art strokes */
.art .s { fill: none; stroke: var(--orange); stroke-width: 2.2; stroke-linecap: round; stroke-linejoin: round; }
.art .t { fill: none; stroke: #f3a888; stroke-width: 1.6; }
.art .f { fill: var(--orange); }
.art .w { fill: #fff; stroke: var(--orange); stroke-width: 2.2; }
.art text { font: 600 12px var(--mono); fill: var(--orange-ink); }

/* ---------- activities ---------- */
.acts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
@media (max-width: 860px) { .acts { grid-template-columns: 1fr; } .act { max-width: 460px; } }
.act { display: grid; gap: 12px; align-content: start; }
.act .slot { aspect-ratio: 4 / 5; }
.act .when { font: 500 12.5px/1 var(--mono); color: var(--muted); }
.act h3 { font-size: 21px; font-weight: 600; }

/* ---------- about / cv snapshot ---------- */
.about { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
@media (max-width: 760px) { .about { grid-template-columns: 1fr; } }
.about h3 { font: 500 12.5px/1.2 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); margin-bottom: 14px; }
.entry { padding-block: 14px; border-top: 1px solid var(--rule); display: grid; gap: 2px; }
.entry b { color: var(--ink); font-weight: 600; }
.entry span { color: var(--muted); font-size: 15px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chips span { background: var(--tint); color: var(--ink); border-radius: 999px; padding: 6px 12px; font-size: 14.5px; }

/* ---------- contact / footer ---------- */
.contact { background: var(--orange); color: #fff; border-radius: 32px 32px 32px 110px; padding: 56px clamp(24px, 5vw, 64px); display: grid; gap: 18px; margin-block: 24px 40px; }
.contact h2 { color: #fff; font-size: clamp(30px, 4.6vw, 48px); font-weight: 700; line-height: 1.05; letter-spacing: -.02em; }
.contact p { max-width: 55ch; font-size: 18px; }
.contact .actions a { border-color: #fff; }
.contact .btn.light { background: #fff; color: var(--orange-ink); }
.contact .btn.ghost { background: transparent; color: #fff; }
.contact .mail { font: 500 17px/1.4 var(--mono); color: #fff; user-select: all; overflow-wrap: anywhere; }
footer { padding-block: 8px 48px; font-size: 14px; color: var(--muted); display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px; }

/* ---------- detail pages ---------- */
.back { display: inline-block; margin-top: 36px; font-weight: 500; text-decoration: none; }
.back::before { content: "← "; }
.page-head { padding-block: 28px 44px; display: grid; gap: 16px; }
.page-head h1 { font-size: clamp(38px, 6vw, 64px); font-weight: 800; line-height: 1.02; letter-spacing: -.025em; }
.page-head .lede { font-size: clamp(18px, 2vw, 21px); max-width: 60ch; }
.meta { display: flex; flex-wrap: wrap; gap: 8px; }
.meta span { font: 500 13px/1 var(--mono); background: var(--tint); color: var(--ink); padding: 8px 12px; border-radius: 999px; }
.prose { display: grid; gap: 18px; max-width: 68ch; }
.prose h2 { font-size: 28px; font-weight: 700; margin-top: 28px; }
.prose ul { margin: 0; padding-left: 22px; display: grid; gap: 8px; }
.prose li::marker { color: var(--orange); }
.block { padding-block: 40px; border-top: 1px solid var(--rule); display: grid; gap: 22px; }
.figs { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; }
.fig { display: grid; gap: 8px; margin: 0; }
.fig .slot { aspect-ratio: 16 / 10; }
.fig.tall .slot { aspect-ratio: 3 / 4; }
.fig figcaption { font-size: 14px; color: var(--muted); }
.callout { background: var(--tint); border-radius: 18px; padding: 22px 24px; display: grid; gap: 10px; }
.callout h3 { font-size: 20px; font-weight: 600; }
.steps { counter-reset: s; list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.steps li { counter-increment: s; display: grid; grid-template-columns: 32px 1fr; gap: 10px; align-items: start; }
.steps li::before { content: counter(s); width: 28px; height: 28px; border-radius: 50%; background: var(--orange); color: #fff; display: grid; place-items: center; font: 600 14px/1 var(--mono); }
.frame { width: 100%; height: 760px; border: 1.5px solid var(--rule); border-radius: 18px; background: #fff; }
.note { font-size: 14px; color: var(--muted); }
kbd { font: 500 13px var(--mono); background: #fff; border: 1px solid var(--rule); border-bottom-width: 2px; border-radius: 5px; padding: 1px 6px; }