/* PartPilot — The Parts Desk Edition.
   Paper & ink editorial: parchment, engraved plate, stamp accents. */

@font-face {
  font-family: 'Mona Sans';
  font-style: normal;
  font-weight: 200 900;
  font-display: swap;
  src: url('/fonts/mona-sans-normal-200_900.woff2') format('woff2-variations'),
       url('/fonts/mona-sans-normal-200_900.woff2') format('woff2');
}
@font-face {
  font-family: 'Fraunces';
  font-style: normal;
  font-weight: 300 900;
  font-display: swap;
  src: url('/fonts/fraunces-normal-300_900.woff2') format('woff2-variations'),
       url('/fonts/fraunces-normal-300_900.woff2') format('woff2');
}
@font-face {
  font-family: 'Fraunces';
  font-style: italic;
  font-weight: 300 900;
  font-display: swap;
  src: url('/fonts/fraunces-italic-300_900.woff2') format('woff2-variations'),
       url('/fonts/fraunces-italic-300_900.woff2') format('woff2');
}
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 100 800;
  font-display: swap;
  src: url('/fonts/jetbrains-mono-normal-100_800.woff2') format('woff2-variations'),
       url('/fonts/jetbrains-mono-normal-100_800.woff2') format('woff2');
}

:root {
  --paper: #e9e4d6;
  --paper-lift: #f2eee1;
  --ink: #1d1a13;
  --ink-soft: #57523f;
  --rule: rgba(29, 26, 19, .25);
  --rule-faint: rgba(29, 26, 19, .12);
  --fire: #d8430f;
  --night: #16130d;
  --night-text: #ece7d8;
  --sans: 'Mona Sans', 'Iowan Old Style', system-ui, sans-serif;
  --serif: 'Fraunces', 'Palatino Linotype', Georgia, serif;
  --mono: 'JetBrains Mono', ui-monospace, 'Cascadia Mono', monospace;
  --measure: 1180px;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  font-variation-settings: "opsz" 30;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--fire); color: var(--paper-lift); }

/* paper grain */
.grain {
  position: fixed; inset: 0; z-index: 40; pointer-events: none;
  opacity: .5; mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 0.45 0 0 0 0 0.42 0 0 0 0 0.35 0 0 0 0.08 0'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- masthead ---------- */
.masthead {
  position: sticky; top: 0; z-index: 30;
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem;
  padding: .8rem clamp(1.2rem, 4vw, 3rem);
  background: var(--paper);
  border-bottom: 1px solid var(--ink);
  box-shadow: 0 1px 0 var(--paper), 0 4px 0 -3px var(--rule);
}
.brand {
  display: inline-flex; align-items: center; gap: .5rem;
  font-family: var(--sans); font-weight: 800; font-size: 1.02rem;
  letter-spacing: -.01em;
}
.brand .dot { width: .55em; height: .55em; border-radius: 50%; background: var(--fire); }
.edition {
  font-family: var(--mono); font-size: .66rem; letter-spacing: .22em;
  text-transform: uppercase; color: var(--ink-soft);
}
.mast-actions { display: inline-flex; align-items: center; gap: 1.1rem; }
.signin {
  color: var(--ink); text-decoration: none; font-family: var(--sans);
  font-weight: 500; font-size: .9rem; border-bottom: 1px solid var(--rule);
}
.signin:hover { border-bottom-color: var(--ink); }

.pill {
  display: inline-block; text-decoration: none;
  font-family: var(--sans); font-weight: 650; font-size: .9rem;
  padding: .5rem 1.15rem; border-radius: 999px;
  border: 1.5px solid var(--ink);
  transition: background .18s ease, color .18s ease, border-color .18s ease, transform .18s ease;
}
.pill-ink { background: var(--ink); color: var(--paper-lift); }
.pill-ink:hover { background: var(--fire); border-color: var(--fire); transform: translateY(-1px); }
.pill-fire { background: var(--fire); border-color: var(--fire); color: #fff; }
.pill-fire:hover { background: #ef5a22; border-color: #ef5a22; transform: translateY(-1px); }
.pill-big { font-size: 1rem; padding: .8rem 1.7rem; }

/* ---------- left rail ---------- */
.rail {
  position: fixed; left: clamp(.8rem, 2vw, 2rem); top: 50%;
  transform: translateY(-50%); z-index: 20;
  display: none; flex-direction: column; gap: .9rem;
}
@media (min-width: 1460px) { .rail { display: flex; } }
.rail-item {
  display: flex; align-items: baseline; gap: .55rem;
  text-decoration: none; color: var(--ink-soft);
  font-family: var(--mono); font-size: .62rem; letter-spacing: .18em;
  text-transform: uppercase; opacity: .55;
  transition: opacity .25s ease, color .25s ease;
}
.rail-item .rn { width: 2.2em; font-size: .72rem; }
.rail-item.is-active { opacity: 1; color: var(--ink); }
.rail-item.is-active .rl { border-bottom: 1px dotted var(--ink); }
.rail.on-dark .rail-item { color: var(--night-text); }
.rail.on-dark .rail-item.is-active { color: var(--night-text); }
.rail.on-dark .rail-item.is-active .rl { border-bottom-color: var(--night-text); }

/* ---------- hero ---------- */
.hero {
  position: relative;
  max-width: var(--measure);
  margin: 0 auto;
  padding: clamp(3rem, 7vh, 5.5rem) clamp(1.2rem, 4vw, 3rem) clamp(3.5rem, 8vh, 6rem);
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
}
.reg {
  position: absolute; font-family: var(--mono); font-size: .8rem;
  color: var(--ink-soft); opacity: .6;
}
.reg-tl { top: 1.1rem; left: 1.2rem; }
.reg-tr { top: 1.1rem; right: 1.2rem; }

.kicker {
  display: flex; align-items: center; gap: .6rem;
  font-family: var(--mono); font-size: .68rem;
  letter-spacing: .24em; text-transform: uppercase; color: var(--ink-soft);
  margin-bottom: 1.6rem;
}
.ksq { width: .6rem; height: .6rem; background: var(--fire); flex: none; }

h1 { font-weight: normal; line-height: .98; letter-spacing: -.035em; }
.h1-line {
  display: block;
  font-family: var(--sans); font-weight: 840;
  font-size: clamp(3rem, 6.6vw, 5.4rem);
}
.h1-serif {
  font-family: var(--serif); font-style: italic; font-weight: 560;
  font-variation-settings: "opsz" 144;
  letter-spacing: -.02em;
  margin-top: .04em;
}
.acc { color: var(--fire); font-style: normal; }

.lede {
  margin-top: 1.7rem; max-width: 30em;
  font-size: clamp(1.05rem, 1.4vw, 1.22rem);
  line-height: 1.55; color: var(--ink);
  font-weight: 420;
}
.actions { display: flex; align-items: center; gap: 1.5rem; margin-top: 2.1rem; flex-wrap: wrap; }
.seework {
  font-family: var(--mono); font-size: .8rem; letter-spacing: .12em;
  text-transform: uppercase; color: var(--ink); text-decoration: none;
  border-bottom: 1px dotted var(--ink);
  padding-bottom: .15rem;
}
.seework .arr { color: var(--fire); }
.seework:hover { color: var(--fire); border-bottom-color: var(--fire); }

.brands { margin-top: 2.6rem; padding-top: 1.2rem; border-top: 1px solid var(--rule); max-width: 34em; }
.brands-row {
  font-family: var(--sans); font-weight: 600; font-size: .82rem;
  letter-spacing: .14em; text-transform: uppercase; color: var(--ink-soft);
}
.brands-note { font-style: italic; font-size: .95rem; color: var(--ink-soft); margin-top: .25rem; }

/* plate */
.plate { position: relative; }
.plate-frame {
  position: relative;
  border: 1px solid var(--ink);
  outline: 1px solid var(--rule);
  outline-offset: 4px;
  background: var(--paper);
}
.plate-frame img {
  display: block; width: 100%; height: auto;
  mix-blend-mode: multiply;
  filter: contrast(1.02);
}
.callouts { position: absolute; inset: 0; width: 100%; height: 100%; }
.callouts path { stroke: var(--ink); stroke-width: 2; fill: none; }
.callouts circle { fill: none; stroke: var(--ink); stroke-width: 2.5; }
.callouts text { fill: var(--ink); }
.co-num { font-family: var(--mono); font-size: 30px; font-weight: 600; letter-spacing: .04em; }
.co-name { font-family: var(--mono); font-size: 19px; letter-spacing: .14em; fill: var(--ink-soft) !important; }
.co rect { fill: none; stroke: var(--fire); stroke-width: 3; }
.co-stamp { font-family: var(--mono); font-size: 26px; font-weight: 700; fill: var(--fire) !important; letter-spacing: .06em; }
.plate figcaption {
  margin-top: .9rem;
  font-family: var(--mono); font-size: .68rem; letter-spacing: .16em;
  text-transform: uppercase; color: var(--ink-soft); text-align: center;
}

/* ---------- sections ---------- */
.section {
  max-width: var(--measure);
  margin: 0 auto;
  padding: clamp(3.5rem, 9vh, 6.5rem) clamp(1.2rem, 4vw, 3rem);
}
.sec-head { max-width: 46em; margin-bottom: clamp(2rem, 5vh, 3.5rem); }
.sec-no {
  display: inline-block;
  font-family: var(--serif); font-style: italic; font-weight: 500;
  font-size: 1rem; color: var(--fire);
  border: 1px solid var(--rule); border-radius: 50%;
  width: 2.2em; height: 2.2em; line-height: 2.15em; text-align: center;
  margin-bottom: 1.1rem;
}
.section h2, .ink h2 {
  font-family: var(--sans); font-weight: 820;
  font-size: clamp(1.9rem, 3.8vw, 3rem);
  letter-spacing: -.03em; line-height: 1.04;
}
.section h2 em, .ink h2 em {
  font-family: var(--serif); font-style: italic; font-weight: 540;
  font-variation-settings: "opsz" 144;
  letter-spacing: -.015em;
}
.sec-sub { margin-top: 1rem; font-size: 1.08rem; color: var(--ink-soft); max-width: 36em; }

/* ---------- ticket ---------- */
.ticket {
  position: relative;
  max-width: 720px; margin: 0 auto;
  background: var(--paper-lift);
  border: 1px solid var(--ink);
  box-shadow: 6px 6px 0 rgba(29, 26, 19, .14);
}
.ticket-head {
  display: flex; justify-content: space-between; align-items: center;
  padding: .7rem 1.4rem;
  border-bottom: 1px solid var(--ink);
  font-family: var(--mono); font-size: .68rem;
  letter-spacing: .2em; text-transform: uppercase;
}
.ticket-head .tno { color: var(--fire); }
.ticket-row {
  display: grid; grid-template-columns: 5.2rem 1fr; gap: 1rem;
  padding: 1.15rem 1.4rem; align-items: baseline;
}
.ticket-q { border-bottom: 1px dashed var(--rule); min-height: 4.4rem; }
.tlabel {
  font-family: var(--mono); font-size: .62rem; letter-spacing: .2em;
  text-transform: uppercase; color: var(--ink-soft);
}
.query { font-family: var(--mono); font-size: clamp(.92rem, 1.6vw, 1.05rem); font-weight: 500; }
.caret {
  display: inline-block; width: .55em; height: 1.1em;
  background: var(--fire); vertical-align: text-bottom; margin-left: 2px;
  animation: blink 1s steps(1) infinite;
}
.caret.off { display: none; }
@keyframes blink { 50% { opacity: 0; } }

.ticket-answer { opacity: 0; transform: translateY(6px); transition: opacity .5s ease, transform .5s ease; }
.ticket-answer.show { opacity: 1; transform: none; }
.vehicle { font-style: italic; font-size: 1.02rem; }
.parts { padding: 0 1.4rem; }
.part {
  display: grid; grid-template-columns: 1fr auto; gap: .2rem 1rem;
  padding: .95rem 0 .95rem 5.2rem; position: relative;
  border-top: 1px solid var(--rule-faint);
}
.part .num {
  font-family: var(--mono); font-weight: 700;
  font-size: clamp(1.05rem, 2vw, 1.3rem); letter-spacing: .04em;
}
.part .name { grid-column: 1; font-size: .92rem; color: var(--ink-soft); font-family: var(--sans); font-weight: 480; }
.part .oe {
  grid-row: 1 / span 2; grid-column: 2; align-self: center;
  font-family: var(--mono); font-weight: 700; font-size: .8rem;
  color: var(--fire); border: 2px solid var(--fire); border-radius: 3px;
  padding: .3rem .55rem; transform: rotate(-4deg);
}
.ticket-answer.show .oe { animation: stamp .38s cubic-bezier(.2, 1.6, .4, 1) backwards; }
.ticket-answer.show .part:nth-child(2) .oe { animation-delay: .15s; }
.ticket-answer.show .part:nth-child(3) .oe { animation-delay: .3s; }
@keyframes stamp {
  from { transform: rotate(-9deg) scale(1.7); opacity: 0; }
  to   { transform: rotate(-4deg) scale(1); opacity: 1; }
}
.meta {
  padding: .9rem 1.4rem 1.2rem 6.6rem;
  font-family: var(--mono); font-size: .7rem; letter-spacing: .08em;
  color: var(--ink-soft);
}
.ticket-perf {
  height: 12px; border-top: 1px dashed var(--rule);
  background:
    radial-gradient(circle at 8px 12px, var(--paper) 5px, transparent 5.5px) repeat-x;
  background-size: 26px 12px;
}

/* ---------- method figs ---------- */
.figs {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: clamp(1.4rem, 3vw, 2.8rem);
}
.fig {
  border-top: 1px solid var(--ink);
  padding-top: 1.4rem;
}
.fig svg { width: min(100%, 200px); height: auto; display: block; margin-bottom: 1.1rem; }
.fig svg rect, .fig svg path, .fig svg line { fill: none; stroke: var(--ink); stroke-width: 2; }
.fig svg .hatch { stroke: var(--rule); stroke-width: 1.4; }
.fig svg .check { stroke: var(--fire); stroke-width: 3; }
.fig svg .fig-mono { font-family: var(--mono); font-size: 13px; fill: var(--ink); stroke: none; letter-spacing: .08em; }
.fig-cap {
  font-family: var(--mono); font-size: .68rem; letter-spacing: .18em;
  text-transform: uppercase; margin-bottom: .55rem;
}
.fig-txt { font-size: .98rem; color: var(--ink-soft); line-height: 1.55; }

/* ---------- ink section ---------- */
.ink { background: var(--night); color: var(--night-text); position: relative; margin-top: clamp(2rem, 6vh, 4rem); }
.tear { display: block; width: 100%; height: 28px; margin-top: -27px; }
.tear path { fill: var(--night); }
.ink-inner {
  max-width: var(--measure); margin: 0 auto;
  padding: clamp(4rem, 10vh, 7rem) clamp(1.2rem, 4vw, 3rem) clamp(4.5rem, 10vh, 7rem);
}
.ink h2 { max-width: 14em; }
.ink h2 em { color: #cfc49f; }
.creed {
  margin-top: clamp(2.5rem, 6vh, 4rem);
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: clamp(1.4rem, 3vw, 2.8rem);
}
.creed-row { border-top: 1px solid rgba(236, 231, 216, .25); padding-top: 1.3rem; }
.creed-no { font-family: var(--serif); font-style: italic; color: var(--fire); font-size: 1.05rem; }
.creed-row h3 {
  font-family: var(--sans); font-weight: 700; font-size: 1.12rem;
  letter-spacing: -.01em; margin: .5rem 0 .6rem;
}
.creed-row p { font-size: .95rem; line-height: 1.6; color: rgba(236, 231, 216, .72); }

.ink-cta { text-align: center; margin-top: clamp(3.5rem, 8vh, 5.5rem); }
.ink-line {
  font-family: var(--serif); font-style: italic;
  font-size: clamp(1.15rem, 2vw, 1.45rem); margin-bottom: 1.6rem;
  color: rgba(236, 231, 216, .9);
}
.ink-mail { margin-top: 1.1rem; font-family: var(--mono); font-size: .72rem; letter-spacing: .14em; color: rgba(236, 231, 216, .55); }

/* ---------- colophon ---------- */
.colophon {
  display: flex; justify-content: center; align-items: baseline; gap: .8rem;
  padding: 1.6rem 1rem;
  background: var(--night); color: rgba(236, 231, 216, .5);
  font-family: var(--mono); font-size: .66rem; letter-spacing: .18em;
  text-transform: uppercase;
  border-top: 1px solid rgba(236, 231, 216, .14);
}
.colophon .sep { color: var(--fire); }

/* ---------- toast ---------- */
.toast {
  position: fixed; left: 50%; bottom: 2rem; transform: translate(-50%, 1rem);
  background: var(--ink); color: var(--paper-lift);
  font-family: var(--sans); font-size: .88rem;
  padding: .7rem 1.3rem; border-radius: 4px;
  opacity: 0; pointer-events: none;
  transition: opacity .3s ease, transform .3s ease;
  z-index: 50;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* ---------- motion ---------- */
.load { opacity: 0; transform: translateY(18px); animation: rise .8s cubic-bezier(.2, .7, .2, 1) forwards; }
.load-1 { animation-delay: .05s; }
.load-2 { animation-delay: .15s; }
.load-3 { animation-delay: .28s; }
.load-4 { animation-delay: .42s; }
.load-5 { animation-delay: .55s; }
.load-6 { animation-delay: .7s; }
@keyframes rise { to { opacity: 1; transform: none; } }

.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s cubic-bezier(.2, .7, .2, 1), transform .7s cubic-bezier(.2, .7, .2, 1); }
.reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .load, .reveal { opacity: 1 !important; transform: none !important; animation: none !important; transition: none !important; }
  .ticket-answer.show .oe { animation: none; }
  .caret { animation: none; }
}

/* ---------- responsive ---------- */
@media (max-width: 980px) {
  .hero { grid-template-columns: 1fr; padding-top: 2.5rem; }
  .plate { max-width: 520px; margin: 0 auto; width: 100%; }
  .edition { display: none; }
  .figs, .creed { grid-template-columns: 1fr; }
  .fig svg { width: 150px; }
  .reg { display: none; }
}
@media (max-width: 560px) {
  .pill-big { width: 100%; text-align: center; }
  .actions { gap: 1rem; }
  .ticket-row { grid-template-columns: 1fr; gap: .3rem; }
  .part { padding-left: 0; }
  .meta { padding-left: 1.4rem; }
  .mast-actions .pill { display: none; }
}