/* ============================================================
   AMOH — warm paper + hand-drawn ink, receipt column,
   kinetic hero, drag band, breathing grain.
   ============================================================ */

:root {
  --bg:        #f8f2e2;
  --bg-deep:   #f1e8d2;
  --ink:       #0a0a0a;
  --ink-soft:  #4a453c;
  --ink-faint: #6b6353;
  --accent:    #b23a1e;
  --rule:      #0a0a0a;
  --card:      #fdf9ef;
  --shadow:    0 1px 0 rgba(10,10,10,.18), 0 12px 28px -18px rgba(10,10,10,.45);
  --paper-edge: rgba(10,10,10,.10);
  --grain-opacity: .30;
  --grain-blend: multiply;
  color-scheme: light;
}

html[data-theme="dark"] {
  --bg:        #14120e;
  --bg-deep:   #1c1913;
  --ink:       #f2ead6;
  --ink-soft:  #c3b9a2;
  --ink-faint: #a89e8a;
  --accent:    #e8734f;
  --rule:      #f2ead6;
  --card:      #1e1a14;
  --shadow:    0 1px 0 rgba(0,0,0,.5), 0 14px 30px -18px rgba(0,0,0,.9);
  --paper-edge: rgba(242,234,214,.14);
  --grain-opacity: .22;
  --grain-blend: screen;
  color-scheme: dark;
}

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

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  min-height: 100vh;
  background-color: var(--bg);
  background-image:
    radial-gradient(120% 80% at 50% -10%, var(--bg-deep), transparent 70%);
  color: var(--ink);
  font-family: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 15px;
  line-height: 1.65;
  font-variation-settings: "wght" 380;
  overflow-x: hidden;
  transition: background-color .35s ease, color .35s ease;
}

img, video { max-width: 100%; height: auto; display: block; }

/* ---------- animated grain field ---------- */
.grain-defs { position: absolute; width: 0; height: 0; overflow: hidden; }

.grain {
  position: fixed;
  inset: -10%;
  z-index: 0;
  pointer-events: none;
  filter: url(#grain);
  opacity: var(--grain-opacity);
  mix-blend-mode: var(--grain-blend);
  animation: breathe 14s ease-in-out infinite alternate;
}

@keyframes breathe {
  from { transform: scale(1) translate3d(0,0,0); opacity: calc(var(--grain-opacity) * .7); }
  to   { transform: scale(1.06) translate3d(-1.5%, -1%, 0); opacity: var(--grain-opacity); }
}

/* ---------- skip link ---------- */
.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 50;
  background: var(--ink);
  color: var(--bg);
  padding: .6rem 1rem;
  font-size: .8rem;
}
.skip:focus { left: .75rem; top: .75rem; }

/* ---------- topbar ---------- */
.topbar {
  position: relative;
  z-index: 2;
  display: flex;
  flex-wrap: wrap;
  gap: .75rem 1rem;
  align-items: center;
  justify-content: space-between;
  max-width: 46rem;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 0;
}

.stamp {
  margin: 0;
  font-size: .68rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.theme-toggle {
  font: inherit;
  font-size: .68rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ink);
  background: transparent;
  border: 1px solid var(--ink);
  border-radius: 999px;
  padding: .55rem .95rem;
  min-height: 44px;
  cursor: pointer;
  transition: background-color .2s ease, color .2s ease, transform .2s ease;
}
.theme-toggle:hover { background: var(--ink); color: var(--bg); }
.theme-toggle:active { transform: translateY(1px); }

/* ---------- layout shell ---------- */
main {
  position: relative;
  z-index: 1;
  max-width: 46rem;
  margin: 0 auto;
  padding: 0 1.25rem 4rem;
}

section { padding: 3.25rem 0 0; }

/* ---------- receipt column ---------- */
.receipt,
.about,
.sayhi {
  max-width: 40ch;
  margin-inline: auto;
}

/* ---------- hero ---------- */
.hero { padding-top: 3.5rem; }

.kicker {
  margin: 0 0 1.25rem;
  font-size: .68rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

h1 {
  margin: 0 0 1.5rem;
  font-family: "Fraunces", Georgia, serif;
  font-size: clamp(2.1rem, 8.5vw, 3.9rem);
  line-height: 1.02;
  letter-spacing: -.02em;
  font-variation-settings: "wght" 220, "SOFT" 40, "WONK" 1;
  text-wrap: balance;
}

/* kinetic hero: weight climbs with scroll */
@supports (animation-timeline: scroll()) {
  @media (prefers-reduced-motion: no-preference) {
    h1 {
      animation: weigh linear both;
      animation-timeline: scroll(root);
      animation-range: 0 30vh;
    }
  }
}

@keyframes weigh {
  from { font-variation-settings: "wght" 200, "SOFT" 40, "WONK" 1; }
  to   { font-variation-settings: "wght" 880, "SOFT" 0,  "WONK" 1; }
}

.hero-sub {
  margin: 0 0 1.25rem;
  font-size: 1rem;
  color: var(--ink-soft);
  max-width: 38ch;
}

.hero-note {
  margin: 0;
  font-size: .72rem;
  letter-spacing: .06em;
  color: var(--ink-faint);
  font-style: italic;
}

/* ---------- scribble marks ---------- */
mark.scribble {
  background: none;
  color: inherit;
  position: relative;
  padding: 0 .12em;
  white-space: nowrap;
}

mark.scribble::after {
  content: "";
  position: absolute;
  left: -.06em;
  right: -.06em;
  bottom: -.28em;
  height: .55em;
  background-repeat: no-repeat;
  background-size: 100% 100%;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 200 20' preserveAspectRatio='none'><path d='M2 13 C 28 4, 52 17, 78 9 S 128 3, 152 12 S 184 8, 198 11' fill='none' stroke='%23b23a1e' stroke-width='3.4' stroke-linecap='round'/></svg>");
}

html[data-theme="dark"] mark.scribble::after {
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 200 20' preserveAspectRatio='none'><path d='M2 13 C 28 4, 52 17, 78 9 S 128 3, 152 12 S 184 8, 198 11' fill='none' stroke='%23e8734f' stroke-width='3.4' stroke-linecap='round'/></svg>");
}

/* ---------- rules ---------- */
.rule {
  border: 0;
  border-top: 2px solid var(--rule);
  margin: 3rem 0 0;
  opacity: .85;
}
.rule--dotted {
  border-top: 1px dotted var(--rule);
  opacity: .55;
  margin: 2rem 0;
}

/* ---------- section headings ---------- */
.section-title {
  margin: 0 0 .75rem;
  font-family: "Fraunces", Georgia, serif;
  font-size: clamp(1.35rem, 5vw, 1.9rem);
  font-variation-settings: "wght" 500, "SOFT" 30;
  letter-spacing: -.01em;
}

.lede {
  margin: 0 0 1.75rem;
  color: var(--ink-soft);
  font-size: .88rem;
  max-width: 42ch;
}

/* ---------- receipt lines ---------- */
.lines {
  list-style: none;
  margin: 0;
  padding: 0;
}

.line {
  display: flex;
  align-items: baseline;
  gap: .5rem;
  padding: .55rem 0;
  border-bottom: 1px dotted var(--paper-edge);
}
.line:last-child { border-bottom: 0; }

.line__what {
  flex: 1 1 auto;
  min-width: 0;
}

.line__meta {
  flex: 0 0 auto;
  font-size: .72rem;
  letter-spacing: .04em;
  color: var(--ink-faint);
  text-align: right;
  white-space: nowrap;
}

/* ---------- totals ---------- */
.totals { margin: 0; }

.totals__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: .4rem 0;
}
.totals__row dt { color: var(--ink-soft); font-size: .82rem; }
.totals__row dd { margin: 0; font-variation-settings: "wght" 600; }

.totals__row--grand {
  margin-top: .6rem;
  padding-top: .8rem;
  border-top: 2px solid var(--rule);
  font-size: 1.05rem;
}
.totals__row--grand dt { color: var(--ink); font-size: .9rem; }
.totals__row--grand dd { color: var(--accent); }

.fineprint {
  margin: 1.25rem 0 0;
  font-size: .7rem;
  letter-spacing: .05em;
  color: var(--ink-faint);
}

/* ---------- drag band ---------- */
.band-section { padding-top: 3.25rem; }

.band {
  position: relative;
  overflow: hidden;
  cursor: grab;
  margin: 0 -1.25rem;
  padding: .5rem 1.25rem 1.25rem;
  -webkit-user-select: none;
  user-select: none;
  touch-action: pan-y;
  -webkit-mask-image: linear-gradient(90deg, transparent 0, #000 1.5rem, #000 calc(100% - 1.5rem), transparent 100%);
  mask-image: linear-gradient(90deg, transparent 0, #000 1.5rem, #000 calc(100% - 1.5rem), transparent 100%);
}
.band.is-dragging { cursor: grabbing; }
.band:focus-visible { outline: 2px dashed var(--accent); outline-offset: 6px; }

.band__track {
  display: flex;
  gap: 1rem;
  list-style: none;
  margin: 0;
  padding: 0;
  width: max-content;
  will-change: transform;
}
.band.is-dragging .band__track { transition: none; }
.band__track { transition: transform .35s cubic-bezier(.22,.61,.36,1); }

.card {
  flex: 0 0 auto;
  width: min(19rem, 78vw);
  background: var(--card);
  border: 1px solid var(--ink);
  border-radius: 2px;
  padding: 1.1rem 1.15rem 1.25rem;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: .5rem;
}
.card:nth-child(odd)  { transform: rotate(-.5deg); }
.card:nth-child(even) { transform: rotate(.6deg); }

.card__no {
  margin: 0;
  font-size: .68rem;
  letter-spacing: .18em;
  color: var(--accent);
}

.card__title {
  margin: 0;
  font-family: "Fraunces", Georgia, serif;
  font-size: 1.12rem;
  line-height: 1.2;
  font-variation-settings: "wght" 560, "SOFT" 30;
}

.card__body {
  margin: 0;
  font-size: .8rem;
  color: var(--ink-soft);
  line-height: 1.6;
}

.card__tag {
  margin: auto 0 0;
  padding-top: .75rem;
  font-size: .68rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.band__hint {
  margin: 0;
  font-size: .68rem;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--ink-faint);
  text-align: right;
}

/* ---------- about ---------- */
.about p {
  margin: 0 0 1.1rem;
  color: var(--ink-soft);
  font-size: .88rem;
}
.about p:first-of-type { color: var(--ink); }

.facts, .elsewhere {
  list-style: none;
  margin: 0;
  padding: 0;
}
.facts li, .elsewhere li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: .45rem 0;
  border-bottom: 1px dotted var(--paper-edge);
  font-size: .82rem;
}
.facts li:last-child, .elsewhere li:last-child { border-bottom: 0; }

.facts__k {
  color: var(--ink-faint);
  font-size: .72rem;
  letter-spacing: .06em;
  text-transform: uppercase;
}
.facts__v { text-align: right; }

/* ---------- form ---------- */
.form { display: grid; gap: 1.1rem; }

.field { display: grid; gap: .4rem; }

.field label {
  font-size: .7rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.field input,
.field textarea {
  font: inherit;
  font-size: .9rem;
  color: var(--ink);
  background: transparent;
  border: 0;
  border-bottom: 2px solid var(--ink);
  border-radius: 0;
  padding: .5rem .1rem;
  width: 100%;
  min-height: 44px;
  transition: border-color .2s ease, background-color .2s ease;
}
.field textarea { min-height: 6.5rem; resize: vertical; line-height: 1.6; }

.field input:focus,
.field textarea:focus {
  outline: none;
  border-bottom-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 7%, transparent);
}
.field input:focus-visible,
.field textarea:focus-visible { outline: 2px dashed var(--accent); outline-offset: 4px; }

.send {
  justify-self: start;
  font: inherit;
  font-size: .78rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--bg);
  background: var(--ink);
  border: 2px solid var(--ink);
  border-radius: 2px;
  padding: .85rem 1.6rem;
  min-height: 44px;
  cursor: pointer;
  transition: background-color .2s ease, color .2s ease, transform .15s ease;
}
.send:hover { background: var(--accent); border-color: var(--accent); color: #fff; }
.send:active { transform: translateY(1px); }
.send[disabled] { opacity: .55; cursor: progress; }

.form-status {
  margin: 0;
  font-size: .8rem;
  color: var(--ink-soft);
}
.form-status[data-state="ok"] { color: var(--accent); }

/* ---------- signoff + footer ---------- */
.signoff {
  margin: 3rem 0 0;
  font-family: "Fraunces", Georgia, serif;
  font-style: italic;
  font-size: 1rem;
  color: var(--ink-soft);
  max-width: 40ch;
}

.footer {
  position: relative;
  z-index: 1;
  max-width: 46rem;
  margin: 0 auto;
  padding: 2rem 1.25rem 3rem;
  border-top: 1px dotted var(--paper-edge);
}

.footer__line {
  margin: 0 0 .5rem;
  font-size: .7rem;
  letter-spacing: .06em;
  color: var(--ink-faint);
}

.attribution {
  position: static;
  margin: 0;
  font-size: .7rem;
  font-family: inherit;
  opacity: 1;
  color: var(--ink-soft);
}
.attribution a { color: var(--ink-soft); text-underline-offset: 3px; }
.attribution a:hover { color: var(--accent); }

/* ---------- focus ---------- */
a:focus-visible,
button:focus-visible {
  outline: 2px dashed var(--accent);
  outline-offset: 3px;
}

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  .grain { animation: none; }
  .band__track { transition: none; }
  h1 { animation: none; font-variation-settings: "wght" 620, "SOFT" 30, "WONK" 1; }
  * { scroll-behavior: auto !important; }
}

/* ---------- wider screens ---------- */
@media (min-width: 44rem) {
  body { font-size: 16px; }
  .topbar { padding-top: 2.25rem; }
  .hero { padding-top: 4.5rem; }
  section { padding-top: 4rem; }
  .band { margin-inline: -2rem; padding-inline: 2rem; }
  .card { width: 21rem; }
}