/* Bureau of Generated Instruments — credit card materiality aesthetic
   Signature: live-rendering credit card with embossed foil, chip module, holographic patch
   Palette: magstripe black, foil cream, chip gold, bronze accent
   Type: Instrument Serif (display) + JetBrains Mono (data) + system (labels) */

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

:root {
  --black: #0c0c0e;
  --surface: #141416;
  --border: #1f1f21;
  --cream: #ddd6c2;
  --cream-dim: #b8b3a3;
  --chip-gold: #c9a961;
  --bronze: #d2a578;
  --bronze-dim: #a18060;
  --muted: #8a8a8a;
  --dim: #5a5a5a;
}

html { font-size: 16px; -webkit-text-size-adjust: 100%; }
body {
  font-family: system-ui, -apple-system, sans-serif;
  background: var(--black);
  color: var(--cream);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ─── Letterhead ─── */
.letterhead {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 24px 32px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}
.seal {
  font-family: 'Instrument Serif', Georgia, serif;
  font-size: 28px;
  font-weight: 400;
  letter-spacing: 0.12em;
  color: var(--bronze);
  flex-shrink: 0;
}
.seal span { color: var(--chip-gold); margin: 0 2px; }
.letterhead-meta { flex: 1; min-width: 0; }
.dept {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--cream);
  text-transform: uppercase;
}
.sub { font-size: 13px; color: var(--muted); margin-top: 2px; }
.archive {
  display: flex; flex-direction: column; align-items: flex-end;
  gap: 2px; flex-shrink: 0;
}
.archive-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 9px; letter-spacing: 0.12em;
  color: var(--dim); text-transform: uppercase;
}
.archive-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 15px; font-weight: 700; color: var(--bronze);
}

/* ─── Main ─── */
main {
  flex: 1;
  max-width: 1100px;
  width: 100%;
  margin: 0 auto;
  padding: 48px 32px 60px;
}

/* ─── Workshop ─── */
.workshop {
  display: grid;
  grid-template-columns: minmax(0, 480px) minmax(0, 1fr);
  gap: 48px;
  margin-bottom: 60px;
}

/* ─── Card Stage (the signature) ─── */
.card-stage { position: sticky; top: 32px; align-self: start; }
.card-instrument {
  position: relative;
  width: 100%;
  aspect-ratio: 1.586;
  min-height: 240px;
  background: linear-gradient(135deg, #2a2a2c 0%, #1a1a1c 100%);
  border-radius: 16px;
  padding: 28px 32px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.6), inset 0 1px 0 rgba(255,255,255,0.03);
  overflow: hidden;
}
.card-foil {
  position: absolute;
  top: 20px; right: 24px;
  width: 80px; height: 80px;
  background: conic-gradient(from 45deg, #c9a961, #d2a578, #8a7a5a, #c9a961);
  opacity: 0.15;
  border-radius: 50%;
  pointer-events: none;
  animation: foilShift 8s ease-in-out infinite;
}
@keyframes foilShift {
  0%, 100% { transform: rotate(0deg); }
  50% { transform: rotate(180deg); }
}
.card-noise {
  position: absolute; inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' /%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.05'/%3E%3C/svg%3E");
  pointer-events: none;
}
.card-chip {
  position: absolute;
  top: 60px; left: 32px;
  width: 48px; height: 38px;
  background: linear-gradient(135deg, var(--chip-gold) 0%, #a18850 100%);
  border-radius: 4px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: repeat(2, 1fr);
  gap: 2px; padding: 4px;
  box-shadow: inset 0 2px 4px rgba(0,0,0,0.4), 0 1px 0 rgba(255,255,255,0.1);
}
.card-chip span { background: rgba(0,0,0,0.3); border-radius: 1px; }
.card-network {
  position: absolute;
  top: 24px; right: 32px;
  font-family: 'Instrument Serif', Georgia, serif;
  font-size: 18px; font-style: italic;
  color: var(--cream-dim);
  letter-spacing: 0.05em;
  opacity: 0.6;
}
.card-pan {
  position: absolute;
  bottom: 64px; left: 32px; right: 32px;
  display: flex; gap: 16px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 22px; font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--cream);
  text-shadow: 0 2px 4px rgba(0,0,0,0.8), 0 1px 0 rgba(255,255,255,0.1);
}
.card-pan .grp { display: inline-block; min-width: 68px; }
.card-row {
  position: absolute;
  bottom: 24px; left: 32px; right: 32px;
  display: flex; gap: 40px;
}
.card-meta { display: flex; flex-direction: column; gap: 4px; }
.card-eyebrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: 8px; letter-spacing: 0.12em;
  color: var(--dim); text-transform: uppercase;
}
.card-val {
  font-family: 'JetBrains Mono', monospace;
  font-size: 14px; font-weight: 500;
  color: var(--cream-dim);
  letter-spacing: 0.05em;
}
.card-holder {
  text-transform: uppercase;
  font-size: 13px;
  letter-spacing: 0.1em;
}

/* ─── Bench ─── */
.bench { display: flex; flex-direction: column; gap: 24px; }
.bench-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.bench-row.primary { grid-template-columns: 1fr; gap: 12px; }
.bench-row.last { margin-top: 12px; }
.bench-field { display: flex; flex-direction: column; gap: 8px; }
.bench-field--full { grid-column: 1 / -1; }
.bench-field--press { display: flex; align-items: flex-end; }
.bench-eyebrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px; font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.bench-input {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--cream);
  padding: 11px 14px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 15px;
  letter-spacing: 0.05em;
  outline: none;
  transition: border-color 0.15s;
}
.bench-input::placeholder { color: var(--dim); }
.bench-input:focus { border-color: var(--bronze); }
.bench-input--bin {
  font-size: 18px; font-weight: 700;
  letter-spacing: 0.1em; padding: 14px 16px;
}
.bench-input--mini { font-size: 13px; padding: 9px 12px; }
.bench-select {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--cream);
  padding: 11px 14px;
  font-family: system-ui, sans-serif;
  font-size: 14px;
  cursor: pointer;
  outline: none;
  transition: border-color 0.15s;
}
.bench-select:focus { border-color: var(--bronze); }
.bench-select--mini { font-size: 13px; padding: 9px 12px; }

/* Readout */
.bench-readout {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 12px 14px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--cream-dim);
  min-height: 60px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.bench-readout.has-hit {
  border-color: rgba(201,169,97,0.3);
  background: rgba(201,169,97,0.04);
}
.bench-readout.has-guess {
  border-color: rgba(210,165,120,0.3);
  background: rgba(210,165,120,0.04);
}
.readout-empty { color: var(--dim); }
.readout-bin { color: var(--chip-gold); font-weight: 700; }
.readout-issuer { color: var(--cream); font-weight: 500; }
.readout-badge {
  align-self: flex-start;
  font-size: 9px;
  letter-spacing: 0.1em;
  padding: 3px 8px;
  border-radius: 3px;
  font-weight: 700;
  margin-top: 4px;
}
.readout-badge.hit { background: var(--chip-gold); color: var(--black); }
.readout-badge.guess { background: var(--bronze); color: var(--black); }
.readout-badge.manual { background: #3a3a3a; color: var(--cream-dim); }

/* Segmented control */
.seg { display: flex; gap: 6px; }
.seg-wide { flex-wrap: wrap; }
.seg-btn {
  flex: 1;
  min-width: 60px;
  padding: 9px 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--muted);
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: all 0.15s;
  white-space: nowrap;
}
.seg-btn:hover { color: var(--cream-dim); border-color: var(--bronze-dim); }
.seg-btn.on {
  background: var(--bronze);
  color: var(--black);
  border-color: var(--bronze);
}
.seg-custom {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-top: 8px;
}

/* Resolved BIN display */
.bin-resolved {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 11px 14px;
}
.bin-resolved-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--chip-gold);
  flex: 1;
}
.bin-resolved.active .bin-resolved-num {
  color: var(--cream);
}
.bin-shuffle {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--muted);
  width: 36px;
  height: 36px;
  font-size: 18px;
  cursor: pointer;
  transition: all 0.15s;
  display: flex;
  align-items: center;
  justify-content: center;
}
.bin-shuffle:hover:not(:disabled) {
  border-color: var(--bronze);
  color: var(--bronze);
}
.bin-shuffle:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

/* Advanced (manual BIN) */
.bench-advanced {
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--surface);
}
.bench-advanced summary {
  padding: 12px 16px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--dim);
  cursor: pointer;
  transition: color 0.15s;
  text-transform: uppercase;
}
.bench-advanced summary:hover {
  color: var(--cream-dim);
}
.bench-advanced-body {
  padding: 12px 16px 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.bench-advanced-hint {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--dim);
}

/* Dial (quantity) */
.dial {
  display: grid;
  grid-template-columns: 44px 1fr 44px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  overflow: hidden;
  position: relative;
}
.dial-btn {
  background: transparent;
  border: none;
  color: var(--cream-dim);
  font-size: 20px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.15s;
  display: flex;
  align-items: center;
  justify-content: center;
}
.dial-btn:hover {
  background: rgba(210,165,120,0.08);
  color: var(--bronze);
}
.dial input {
  background: transparent;
  border: none;
  color: var(--cream);
  font-family: 'JetBrains Mono', monospace;
  font-size: 16px;
  font-weight: 700;
  text-align: center;
  outline: none;
  padding: 11px 0;
  -moz-appearance: textfield;
}
.dial input::-webkit-outer-spin-button,
.dial input::-webkit-inner-spin-button {
  -webkit-appearance: none; margin: 0;
}
.dial-hint {
  position: absolute;
  bottom: -20px; right: 0;
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--dim);
}

/* Press (generate button) */
.press {
  width: 100%;
  background: var(--bronze);
  border: none;
  border-radius: 4px;
  color: var(--black);
  padding: 14px 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  cursor: pointer;
  transition: all 0.15s;
  box-shadow: 0 2px 8px rgba(210,165,120,0.3);
}
.press:hover:not(:disabled) {
  background: var(--chip-gold);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(210,165,120,0.4);
}
.press:disabled {
  opacity: 0.3; cursor: not-allowed; box-shadow: none;
}
.press-stamp {
  font-family: 'Instrument Serif', Georgia, serif;
  font-size: 20px;
  font-weight: 400;
  letter-spacing: 0.12em;
}
.press-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0.7;
}

/* ─── Receipt ─── */
.receipt-wrap { margin-bottom: 60px; }
.receipt {
  position: relative;
  background: #f4f1ea;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 4px 16px rgba(0,0,0,0.4);
}
.receipt-perf {
  height: 8px;
  background-image: repeating-linear-gradient(
    90deg, transparent, transparent 8px,
    #0c0c0e 8px, #0c0c0e 10px,
    transparent 10px, transparent 18px
  );
}
.receipt-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px 12px;
  border-bottom: 1px dashed #c8c5ba;
  flex-wrap: wrap;
  gap: 10px;
}
.receipt-title {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: #2a2a2a;
  text-transform: uppercase;
}
.receipt-actions { display: flex; gap: 8px; }
.receipt-btn {
  background: transparent;
  border: 1px solid #c8c5ba;
  border-radius: 3px;
  color: #5a5a5a;
  padding: 5px 12px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: all 0.15s;
  text-transform: uppercase;
}
.receipt-btn:hover { border-color: #a18060; color: #2a2a2a; }
.receipt-meta {
  padding: 0 20px 12px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: #5a5a5a;
  border-bottom: 1px dashed #c8c5ba;
}
.receipt-body {
  padding: 16px 20px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  line-height: 1.7;
  color: #1a1a1a;
  white-space: pre;
  overflow-x: auto;
  max-height: 480px;
  overflow-y: auto;
}
.receipt-foot {
  padding: 12px 20px;
  border-top: 1px dashed #c8c5ba;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: #8a8a8a;
  text-align: center;
}

/* ─── Colophon ─── */
.colophon {
  max-width: 720px;
  margin: 0 auto 48px;
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
}
.colophon p {
  font-family: Georgia, serif;
  font-size: 15px;
  line-height: 1.65;
  color: var(--cream-dim);
}
.colophon em { font-style: italic; color: var(--bronze); }
.colophon-foot {
  display: flex;
  justify-content: space-between;
  padding: 20px 32px;
  border-top: 1px solid var(--border);
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--dim);
  letter-spacing: 0.05em;
  flex-wrap: wrap;
  gap: 12px;
}
.colophon-foot a { color: var(--muted); text-decoration: none; }
.colophon-foot a:hover { color: var(--bronze); }

/* ─── Mobile ─── */
@media (max-width: 960px) {
  .workshop { grid-template-columns: 1fr; gap: 32px; }
  .card-stage { position: relative; top: 0; max-width: 480px; margin: 0 auto; }
}
@media (max-width: 600px) {
  .letterhead { flex-wrap: wrap; padding: 16px 20px; gap: 12px; }
  .seal { font-size: 24px; }
  .dept { font-size: 10px; }
  .sub { font-size: 12px; }
  .archive { display: none; }
  main { padding: 32px 16px 48px; }
  .bench-row { grid-template-columns: 1fr; }
  .card-instrument { padding: 20px 24px; border-radius: 12px; }
  .card-pan { font-size: 16px; gap: 10px; bottom: 56px; left: 24px; right: 24px; }
  .card-pan .grp { min-width: 48px; }
  .card-chip { top: 48px; left: 24px; width: 40px; height: 32px; }
  .card-row { bottom: 18px; left: 24px; right: 24px; gap: 24px; }
  .card-network { top: 18px; right: 24px; font-size: 14px; }
  .seg { flex-wrap: wrap; }
  .seg-btn { min-width: 55px; padding: 8px 8px; font-size: 10px; }
  .colophon { margin: 0 0 32px; padding: 18px; }
  .colophon p { font-size: 13.5px; }
  .colophon-foot { padding: 16px 20px; flex-direction: column; }
  .receipt-body { font-size: 11px; max-height: 320px; }
}

/* Scrollbar */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--surface); }
::-webkit-scrollbar-thumb { background: #2a2a2a; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #3a3a3a; }
.receipt-body::-webkit-scrollbar-track { background: #e8e5dc; }
.receipt-body::-webkit-scrollbar-thumb { background: #c8c5ba; }
.receipt-body::-webkit-scrollbar-thumb:hover { background: #a8a59a; }


/* ─── Searchable combo dropdown ─── */
.combo {
  position: relative;
  width: 100%;
}
.combo-input {
  width: 100%;
  cursor: text;
}
.combo-list {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  right: 0;
  z-index: 100;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  max-height: 280px;
  overflow-y: auto;
  box-shadow: 0 8px 24px rgba(0,0,0,0.6);
}
.combo-item {
  padding: 8px 12px;
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
  color: var(--cream);
  cursor: pointer;
  border-bottom: 1px solid rgba(255,255,255,0.03);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.combo-item:hover, .combo-item.active {
  background: rgba(210,165,120,0.10);
  color: var(--bronze);
}
.combo-item.empty {
  color: var(--muted);
  cursor: default;
  font-style: italic;
}

/* Click-to-copy on output lines */
.output-line {
  cursor: pointer;
  padding: 2px 0;
  display: block;
}
.output-line:hover {
  background: rgba(210,165,120,0.08);
}
.output-line.copied {
  background: rgba(126,200,148,0.18);
  color: #7ec894;
}


/* ─── Header actions ─── */
.header-actions {
  display: flex;
  gap: 8px;
  margin-top: 8px;
}
.hdr-btn {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--cream-dim);
  width: 32px;
  height: 32px;
  border-radius: 4px;
  font-size: 16px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s;
}
.hdr-btn:hover {
  border-color: var(--bronze);
  color: var(--bronze);
}

/* ─── Light theme ─── */
body.light {
  --bg: #f5f2eb;
  --surface: #ffffff;
  --border: #e0ddd6;
  --cream: #1a1a1c;
  --cream-dim: #444;
  --muted: #888;
  --bronze: #9a6b3a;
  --gold: #8a6720;
  --dim: #666;
}
body.light .letterhead {
  background: #1a1a1c;
  color: var(--cream);
}
body.light .letterhead { color: #ddd6c2; }
body.light .card-instrument {
  box-shadow: 0 8px 32px rgba(0,0,0,0.15), inset 0 1px 0 rgba(255,255,255,0.1);
}
body.light .receipt-body {
  background: #fff;
  color: #333;
  border-color: #e0ddd6;
}
body.light .bench-select,
body.light .combo-input {
  background: #fff;
  border-color: #ddd;
  color: #222;
}
body.light .combo-list {
  background: #fff;
  border-color: #ddd;
  box-shadow: 0 8px 24px rgba(0,0,0,0.12);
}
body.light .combo-item {
  color: #222;
  border-bottom-color: #eee;
}
body.light .combo-item:hover, body.light .combo-item.active {
  background: rgba(154,107,58,0.08);
}
body.light .seg-btn {
  background: #fff;
  border-color: #ddd;
  color: #444;
}
body.light .seg-btn.on {
  background: var(--bronze);
  color: #fff;
  border-color: var(--bronze);
}
body.light .colophon {
  background: #fff;
  border-color: #e0ddd6;
}
body.light .colophon p { color: #444; }
body.light .colophon-foot { background: #faf8f4; border-top-color: #e0ddd6; color: #666; }