/* Scancat — the photocopy-room palette shared with Redacat and Diffcat:
   grey desk, white paper, ink, stamp red; teal for a locked-on page,
   amber for a page that's only half found. */

@font-face {
  font-family: "Archivo Black";
  src: url("../assets/fonts/archivo-black.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

:root {
  --desk: #e8e8e4;
  --paper: #ffffff;
  --ink: #141412;
  --grey: #6b6b65;
  --rule: #d4d4cf;
  --stamp: #b3261e;
  --scan: #0e6b52;   /* locked-on page */
  --weak: #c77400;   /* page found, edges uncertain */
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --display: "Archivo Black", system-ui, sans-serif;
  --body: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

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

/* author display rules (flex etc.) must never defeat the hidden attribute */
[hidden] { display: none !important; }

html { background: var(--desk); }

body {
  font-family: var(--body);
  color: var(--ink);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.mono { font-family: var(--mono); }

a { color: var(--ink); text-underline-offset: 3px; }
a:hover { color: var(--stamp); }

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

/* ---------- header ---------- */

.top {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 1.1rem clamp(1rem, 4vw, 2.5rem);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--ink);
}

.mark { width: 72px; height: 31px; display: block; }

.wordmark {
  font-family: var(--display);
  font-size: 1.35rem;
  letter-spacing: 0.01em;
  text-transform: lowercase;
}

.stamp {
  margin-left: auto;
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--stamp);
  border: 2px solid var(--stamp);
  border-radius: 3px;
  padding: 0.3rem 0.55rem;
  transform: rotate(-3deg);
  text-align: center;
  line-height: 1.35;
  user-select: none;
}
.stamp span { display: block; font-size: 0.58rem; font-weight: 400; letter-spacing: 0.18em; }

.srclink { font-size: 0.8rem; text-decoration: none; border-bottom: 1px solid var(--rule); }

/* ---------- layout ---------- */

main {
  flex: 1;
  width: min(1180px, 100% - 2rem);
  margin: 0 auto;
  padding-bottom: 3rem;
}

/* ---------- hero ---------- */

h1 {
  font-family: var(--display);
  font-weight: 400;
  font-size: clamp(1.9rem, 5.4vw, 3.4rem);
  line-height: 1.12;
  margin: clamp(1.5rem, 5vh, 3.5rem) 0 1rem;
  letter-spacing: -0.01em;
}
h1 .hl {
  background: linear-gradient(90deg, rgba(14, 107, 82, 0.22), rgba(179, 38, 30, 0.18));
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
  padding: 0 0.12em;
  border-radius: 3px;
}

.lede {
  max-width: 62ch;
  font-size: 1.02rem;
  line-height: 1.6;
  color: var(--grey);
  margin-bottom: 1.6rem;
}
.lede em { color: var(--ink); font-style: normal; font-weight: 600; }

.startrow { display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; margin-bottom: 1rem; }
.hint { font-size: 0.74rem; color: var(--grey); letter-spacing: 0.03em; }

.err {
  font-size: 0.8rem;
  color: var(--stamp);
  border-left: 3px solid var(--stamp);
  padding: 0.4rem 0.7rem;
  max-width: 62ch;
  line-height: 1.5;
}

body.live h1 { font-size: clamp(1.3rem, 3vw, 1.8rem); margin: 0.6rem 0 0.4rem; }
body.live .lede, body.live .startrow { display: none; }

/* ---------- paper sheets ---------- */

.sheet {
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 2px;
  box-shadow: 0 1px 0 rgba(20, 20, 18, 0.05), 0 14px 34px -16px rgba(20, 20, 18, 0.28);
}

/* ---------- facts ---------- */

.facts {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.25rem;
  margin-top: 3rem;
}
.fact h2 {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  border-top: 3px solid var(--ink);
  padding-top: 0.7rem;
  margin-bottom: 0.55rem;
}
.fact p { font-size: 0.9rem; line-height: 1.55; color: var(--grey); }
.fact strong { color: var(--ink); }

/* ---------- buttons ---------- */

.btn {
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.02em;
  background: var(--paper);
  color: var(--ink);
  border: 1.5px solid var(--ink);
  border-radius: 2px;
  padding: 0.42rem 0.75rem;
  cursor: pointer;
  transition: background 0.1s ease, color 0.1s ease;
}
.btn:hover { background: var(--ink); color: var(--paper); }
.btn.primary { background: var(--ink); color: var(--paper); }
.btn.primary:hover { background: var(--stamp); border-color: var(--stamp); }
.btn.ghost { border-color: var(--rule); color: var(--grey); }
.btn.ghost:hover { border-color: var(--ink); background: var(--paper); color: var(--ink); }
.btn.ghost.danger:hover { border-color: var(--stamp); color: var(--stamp); }
.btn.big { font-size: 0.95rem; padding: 0.7rem 1.3rem; }
.btn.small { font-size: 0.7rem; padding: 0.28rem 0.55rem; }
.btn:disabled { opacity: 0.35; cursor: default; }
.btn:disabled:hover { background: var(--paper); color: var(--ink); }
.btn.primary:disabled:hover { background: var(--ink); color: var(--paper); }
select.btn { appearance: auto; padding-right: 0.4rem; }

/* ---------- scanner ---------- */

#scanner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 260px;
  gap: 1.25rem;
  margin-top: 1rem;
  align-items: start;
}

.viewport {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: #1a1a18;
  overflow: hidden;
}
#video { display: block; width: 100%; height: 100%; object-fit: fill; background: #1a1a18; }

#overlay { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; }
#quad {
  fill: rgba(14, 107, 82, 0.12);
  stroke: var(--scan);
  stroke-width: 3;
  vector-effect: non-scaling-stroke;
  stroke-linejoin: round;
  transition: fill 0.15s ease;
}
#quad.weak { fill: rgba(199, 116, 0, 0.10); stroke: var(--weak); }
#dots circle { fill: var(--paper); stroke: var(--scan); stroke-width: 2; vector-effect: non-scaling-stroke; }
#quad.weak ~ #dots circle { stroke: var(--weak); }

#flash {
  position: absolute; inset: 0;
  background: var(--paper);
  opacity: 0;
  pointer-events: none;
}
#flash.go { animation: flash 0.35s ease-out; }
@keyframes flash { 0% { opacity: 0.9; } 100% { opacity: 0; } }

.pillrow {
  position: absolute;
  left: 0.75rem; bottom: 0.75rem;
  display: flex; align-items: center; gap: 0.5rem;
}
.pill {
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  background: rgba(20, 20, 18, 0.78);
  color: var(--paper);
  padding: 0.35rem 0.6rem;
  border-radius: 2px;
  backdrop-filter: blur(4px);
}
.pill.ok { background: rgba(14, 107, 82, 0.9); }
.pill.bad { background: rgba(179, 38, 30, 0.9); }
.ring { width: 26px; height: 26px; transform: rotate(-90deg); }
.ring .bg { fill: rgba(20, 20, 18, 0.6); stroke: rgba(255, 255, 255, 0.35); stroke-width: 3; }
.ring .fg { fill: none; stroke: var(--paper); stroke-width: 3; stroke-dasharray: 97.4; stroke-dashoffset: 97.4; stroke-linecap: round; }

.controls {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-top: 0.9rem;
  flex-wrap: wrap;
}
.ctls { display: flex; flex-wrap: wrap; gap: 0.45rem 1rem; align-items: center; flex: 1; }
.ctl { display: inline-flex; align-items: center; gap: 0.4rem; font-size: 0.8rem; }
.ctl .k { font-size: 0.66rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--grey); }
.ctl select {
  font-family: var(--mono);
  font-size: 0.78rem;
  padding: 0.28rem 0.4rem;
  border: 1.5px solid var(--rule);
  border-radius: 2px;
  background: var(--paper);
  color: var(--ink);
  max-width: 200px;
}
.ctl.chk { gap: 0.35rem; color: var(--grey); }
.ctl.chk input { accent-color: var(--ink); }
.res { font-size: 0.66rem; color: var(--grey); letter-spacing: 0.06em; }

.shutter {
  width: 64px; height: 64px;
  border-radius: 50%;
  border: 3px solid var(--ink);
  background: var(--paper);
  cursor: pointer;
  display: grid; place-items: center;
  flex: none;
  transition: transform 0.08s ease;
}
.shutter span { width: 46px; height: 46px; border-radius: 50%; background: var(--stamp); transition: transform 0.08s ease; }
.shutter:hover span { transform: scale(1.06); }
.shutter:active { transform: scale(0.95); }
.shutter:disabled { opacity: 0.4; cursor: default; }

.keys { font-size: 0.68rem; color: var(--grey); letter-spacing: 0.04em; margin-top: 0.6rem; }

/* ---------- tray ---------- */

.tray { display: flex; flex-direction: column; min-height: 320px; max-height: min(78vh, 900px); position: sticky; top: 1rem; }
.tray-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.6rem 0.75rem;
  border-bottom: 1px solid var(--rule);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--grey);
}
.pages {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.6rem;
  padding: 0.75rem;
  overflow-y: auto;
  flex: 1;
}
.page {
  position: relative;
  background: var(--desk);
  border: 1px solid var(--rule);
  aspect-ratio: 0.72;
  display: grid; place-items: center;
  cursor: pointer;
  overflow: hidden;
}
.page.drag { opacity: 0.4; }
.page.over { outline: 2px dashed var(--scan); outline-offset: -2px; }
.page img { max-width: 100%; max-height: 100%; display: block; box-shadow: 0 2px 8px rgba(20, 20, 18, 0.25); }
.page .num {
  position: absolute; left: 0.3rem; top: 0.3rem;
  font-size: 0.62rem;
  background: var(--ink); color: var(--paper);
  padding: 0.1rem 0.35rem;
  border-radius: 2px;
}
.page .acts { position: absolute; right: 0.25rem; top: 0.25rem; display: none; gap: 0.2rem; }
.page:hover .acts, .page:focus-within .acts { display: flex; }
.page .acts button {
  width: 22px; height: 22px;
  border: 1px solid var(--rule); border-radius: 2px;
  background: var(--paper); color: var(--ink);
  font-size: 0.75rem; cursor: pointer; line-height: 1;
}
.page .acts button:hover { background: var(--ink); color: var(--paper); }
.page.busy::after {
  content: "…";
  position: absolute; inset: 0;
  display: grid; place-items: center;
  background: rgba(255, 255, 255, 0.6);
  font-family: var(--mono);
}
.trayhint { font-size: 0.78rem; color: var(--grey); line-height: 1.5; padding: 0 0.9rem 0.9rem; }
.tray-foot { display: flex; gap: 0.5rem; padding: 0.75rem; border-top: 1px solid var(--rule); }
.tray-foot .primary { flex: 1; }

/* ---------- editor ---------- */

.modal {
  position: fixed; inset: 0;
  background: rgba(20, 20, 18, 0.55);
  display: grid; place-items: center;
  padding: 1rem;
  z-index: 10;
}
.modal-card {
  width: min(1100px, 100%);
  max-height: calc(100vh - 2rem);
  display: flex; flex-direction: column;
}
.modal-bar {
  display: flex; align-items: center; gap: 0.75rem; flex-wrap: wrap;
  padding: 0.6rem 0.75rem;
  border-bottom: 1px solid var(--rule);
  font-size: 0.78rem;
}
.modal-acts { margin-left: auto; display: flex; gap: 0.35rem; flex-wrap: wrap; }
.modal-body { overflow: auto; padding: 1rem; background: var(--desk); display: grid; place-items: center; min-height: 300px; }
#edview img { max-width: 100%; max-height: calc(100vh - 8rem); display: block; box-shadow: 0 6px 24px -8px rgba(20, 20, 18, 0.5); }
#cornerpane { width: 100%; display: flex; flex-direction: column; gap: 0.6rem; align-items: center; }
.cornerhint { font-size: 0.7rem; color: var(--grey); letter-spacing: 0.04em; }
.cornerwrap { position: relative; max-width: 100%; touch-action: none; }
#cornercv { display: block; max-width: 100%; height: auto; }
#cornersvg { position: absolute; inset: 0; width: 100%; height: 100%; }
#cornerpoly { fill: rgba(14, 107, 82, 0.15); stroke: var(--scan); stroke-width: 2; vector-effect: non-scaling-stroke; }
#cornersvg .h { r: 9; fill: var(--paper); stroke: var(--scan); stroke-width: 2.5; vector-effect: non-scaling-stroke; cursor: grab; }
#cornersvg .h:active { cursor: grabbing; fill: var(--scan); }
.cornerbar { display: flex; gap: 0.5rem; width: 100%; }
.cornerbar .grow { flex: 1; }

/* ---------- footer ---------- */

footer {
  padding: 1.2rem clamp(1rem, 4vw, 2.5rem);
  font-size: 0.72rem;
  color: var(--grey);
  letter-spacing: 0.03em;
}
footer a { color: var(--grey); }

/* ---------- responsive ---------- */

@media (max-width: 860px) {
  #scanner { grid-template-columns: 1fr; }
  .tray { position: static; max-height: none; min-height: 0; }
  .pages { grid-template-columns: repeat(4, 1fr); }
}
@media (max-width: 720px) {
  .facts { grid-template-columns: 1fr; gap: 1.5rem; }
  .srclink { display: none; }
  .pages { grid-template-columns: repeat(3, 1fr); }
  .modal-acts { margin-left: 0; }
}