/* ═══════════════════════════════════════════════════════════════════
   RAVENS FROIDNOISE
   Pure HTML + CSS. No build step, no JavaScript, no external requests.

   THE DIALS — change these first, everything else follows:
   --tilt        how crooked the paper sits (0deg = perfectly square)
   --stamp       the NEW badge colour (set to var(--ink) for mono ink)
   --grain-amt   paper texture strength
   --tooth-w/h   size of the torn edge teeth
   ═══════════════════════════════════════════════════════════════════ */

:root {
  /* ═══ THE STAMP ═══════════════════════════════════════════════════
     Bump these two whenever you change something and post it.
     They're the ONLY thing you edit to cut a new version, and each
     appears in two places on the receipt (header docket + footer),
     the way a real receipt repeats its transaction number.
     Quotes are required — these are CSS strings.
     ═════════════════════════════════════════════════════════════════ */
  --build: "RFN-0001";
  --date:  "2026-08-07";

  /* Type — installed system font only, never loaded over the network.
     Android has no Courier New and falls through to monospace. Fine. */
  --font: "Courier New", Courier, "Nimbus Mono PS", monospace;

  /* Ink & paper */
  --ground:   #cfc9bd;              /* the surface the paper lies on */
  --paper:    #f4f1ea;
  --ink:      #1a1917;              /* warm near-black; print is never pure #000 */
  --ink-mid:  #504b42;
  --ink-soft: #665f54;              /* checked: ~5.2:1 on --paper, passes AA */
  --rule:     rgba(26, 25, 23, .32);
  --stamp:    #9c3b2e;              /* faded stamp red; ~6:1 on --paper */

  --tilt:       -0.4deg;
  --grain-amt:  .06;
  --tooth-w:    24px;
  --tooth-h:    8px;

  /* Torn edge teeth, as mask shapes so they inherit --paper.
     If a browser ignores mask, the edge is simply straight. */
  --tooth-up:   url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='8'%3E%3Cpath d='M0,8L6,0L12,8L18,0L24,8Z' fill='%23000'/%3E%3C/svg%3E");
  --tooth-down: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='8'%3E%3Cpath d='M0,0L6,8L12,0L18,8L24,0Z' fill='%23000'/%3E%3C/svg%3E");

  /* Paper fibre / print noise. ~400 bytes, no image request. */
  --grain: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='g'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23g)'/%3E%3C/svg%3E");
}

/* ─── Reset ──────────────────────────────────────────────────────── */

* { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  overflow-x: hidden;               /* --tilt must not create a scrollbar */
}

body {
  margin: 0;
  overflow-x: hidden;
  background: var(--ground);
  color: var(--ink);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.5;
  font-variant-ligatures: none;
}

/* ─── The paper ──────────────────────────────────────────────────── */

.page {
  min-height: 100dvh;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding: 24px 16px calc(48px + env(safe-area-inset-bottom));
}

.receipt {
  position: relative;
  width: 100%;
  max-width: 420px;
  padding: 28px 22px 22px;
  background: var(--paper);
  transform: rotate(var(--tilt));
  box-shadow: 0 1px 2px rgba(0, 0, 0, .10), 0 10px 26px rgba(0, 0, 0, .10);
}

/* Torn top and bottom edges */
.receipt::before,
.receipt::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: var(--tooth-h);
  background-color: var(--paper);
  background-repeat: repeat-x;
}

.receipt::before {
  top: calc(-1 * var(--tooth-h));
  -webkit-mask: var(--tooth-up) 0 0 / var(--tooth-w) var(--tooth-h) repeat-x;
          mask: var(--tooth-up) 0 0 / var(--tooth-w) var(--tooth-h) repeat-x;
}

.receipt::after {
  bottom: calc(-1 * var(--tooth-h));
  -webkit-mask: var(--tooth-down) 0 0 / var(--tooth-w) var(--tooth-h) repeat-x;
          mask: var(--tooth-down) 0 0 / var(--tooth-w) var(--tooth-h) repeat-x;
}

.grain {
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;             /* clicks pass straight through */
  background-image: var(--grain);
  background-size: 140px 140px;
  mix-blend-mode: multiply;
  opacity: var(--grain-amt);
}

/* ─── Header ─────────────────────────────────────────────────────── */

.logo {                             /* ready for when you uncomment the <img> */
  display: block;
  width: clamp(84px, 26vw, 120px);
  height: auto;
  margin: 0 auto 16px;
}

.wordmark {
  margin: 0;
  font-size: clamp(25px, 8.6vw, 38px);   /* 25px min so it breathes at 320px */
  font-weight: 700;                 /* Courier New is thin; 700 or it washes out */
  letter-spacing: .10em;            /* monospace already has wide sidebearings */
  line-height: 1.12;
  text-transform: uppercase;
  text-align: center;
}

.tagline {
  margin: 12px 0 0;
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  text-align: center;
  color: var(--ink-soft);
}

.docket {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-top: 20px;
  font-size: 12px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--ink-mid);
}

.docket__row {
  display: flex;
  justify-content: space-between;
}

/* The two stamp values are printed from the --date / --build tokens so one
   edit updates every place they appear. Fallbacks keep the receipt readable
   if a browser ever refuses a custom property in content. */
.val--date::after  { content: var(--date,  "\2014"); }
.val--build::after { content: var(--build, "\2014"); }

/* ─── Rules ──────────────────────────────────────────────────────── */

.rule {
  border: 0;
  border-top: 1px dashed var(--rule);
  margin: 16px 0;
}

.rule--heavy {
  border-top: 3px double var(--ink);
}

/* ─── Line items ─────────────────────────────────────────────────── */

.item {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 56px;                 /* thumb target; non-negotiable on mobile */
  padding: 8px 6px;
  color: inherit;
  text-decoration: none;
  font-size: 17px;                  /* Courier's small x-height reads under size */
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  border-bottom: 1px dashed var(--rule);
  transition: background-color 120ms linear, color 120ms linear;
}

.items .item:last-child { border-bottom: 0; }

.item__label { flex: 1 1 auto; }

.item__meta {
  flex: 0 0 auto;
  font-size: 12px;
  font-weight: 400;
  letter-spacing: .10em;
  color: var(--ink-soft);
}

.item--featured {
  min-height: 64px;
  font-size: 20px;
  border-bottom: 0;
}

.stamp {
  display: inline-block;
  margin-left: 8px;
  padding: 2px 5px;
  border: 1px solid var(--stamp);
  border-radius: 2px;
  color: var(--stamp);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .12em;
  vertical-align: middle;
  transform: rotate(-3deg);
}

/* Pressed state inverts the row like a stamped impression. This is the
   feedback that actually matters on a phone. */
.item:active {
  background: var(--ink);
  color: var(--paper);
}
.item:active .item__meta { color: var(--paper); }
.item:active .stamp { color: var(--paper); border-color: var(--paper); }

@media (hover: hover) {
  .item:hover { background: rgba(26, 25, 23, .06); }
}

/* ─── Subtotal ───────────────────────────────────────────────────── */

.subtotal {
  display: flex;
  justify-content: space-between;
  padding: 2px 6px;
  font-size: 12px;
  letter-spacing: .10em;
  text-transform: uppercase;
  color: var(--ink-mid);
}

/* ─── Socials ────────────────────────────────────────────────────── */

/* A 2-column grid, not a wrapping row: four items in a flex row orphan the
   last one onto its own line at ~390px. The grid stays balanced at every
   width, and each cell is a comfortable tap target. */
.socials {
  display: grid;
  grid-template-columns: 1fr 1fr;
  padding: 4px 0;
}

.social {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 8px;
  color: var(--ink);
  text-decoration: none;
  text-underline-offset: 4px;
  font-size: 12px;
  letter-spacing: .10em;
  text-transform: uppercase;
  transition: background-color 120ms linear, color 120ms linear;
}

.social:active {
  background: var(--ink);
  color: var(--paper);
}

@media (hover: hover) {
  .social:hover { text-decoration: underline; }
}

/* ─── Footer ─────────────────────────────────────────────────────── */

.foot { text-align: center; }

.thanks {
  margin: 12px 0 16px;
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--ink-mid);
}

/* Irregular bar widths so it doesn't read as a stripe pattern */
.barcode {
  max-width: 220px;
  height: 46px;
  margin: 0 auto 12px;
  background-image: repeating-linear-gradient(90deg,
    var(--ink)   0    2px, transparent  2px  5px,
    var(--ink)   5px  6px, transparent  6px  9px,
    var(--ink)   9px 12px, transparent 12px 13px,
    var(--ink)  13px 14px, transparent 14px 18px,
    var(--ink)  18px 21px, transparent 21px 23px);
}

.serial {
  margin: 0;
  white-space: nowrap;              /* never break at the RFN- hyphen */
  font-size: 10px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

/* ─── Focus, motion, print ───────────────────────────────────────── */

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

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}

@media print {
  body { background: #fff; }
  .receipt { max-width: none; transform: none; box-shadow: none; }
  .grain { display: none; }
}