/* ===========================================================================
   BARRAS — barras.artico.uy
   Aesthetic: technical document × industrial label
   =========================================================================== */

/* OCR-B — the canonical retail/logistics barcode font (Adrian Frutiger, 1968).
   Used by GS1 standards under EAN/UPC bars. SIL OFL 1.1 license.
   Source: https://github.com/raisty/OCR-B */
@font-face {
  font-family: 'OCR-B';
  src: url('https://barras.artico.uy/ocrb.ttf') format('truetype'),
       url('https://barras.artico.uy/ocrb.otf') format('opentype');
  font-display: swap;
}

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

:root {
  --bg:         #efe9dc;
  --bg-card:    #ffffff;
  --bg-alt:     rgba(12, 12, 12, 0.04);

  --ink:        #0c0c0c;
  --ink-2:      #2a2a2a;
  --ink-mute:   #6a6258;

  --rule:       #1a1a1a;
  --rule-soft:  rgba(12, 12, 12, 0.18);

  --accent:     #b8401b;
  --accent-bg:  rgba(184, 64, 27, 0.10);

  --font-display: 'Fraunces', 'Iowan Old Style', Georgia, serif;
  --font-mono:    'JetBrains Mono', ui-monospace, 'SF Mono', Consolas, monospace;
}

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

body {
  font-family: var(--font-mono);
  color: var(--ink);
  font-size: 13px;
  line-height: 1.5;
  font-feature-settings: 'tnum', 'ss01';
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  background-image:
    linear-gradient(rgba(12,12,12,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(12,12,12,0.025) 1px, transparent 1px);
  background-size: 24px 24px;
  background-position: -1px -1px;
}

::selection { background: var(--ink); color: var(--bg); }

/* ── PAGE ────────────────────────────────────────────────────────────── */

.page {
  max-width: 1280px;
  margin: 0 auto;
  padding: 28px 36px 56px;
}

@media (max-width: 720px) {
  .page { padding: 16px; }
}

/* ── MASTHEAD ────────────────────────────────────────────────────────── */

.masthead {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 32px;
  padding: 24px 0 18px;
  position: relative;
  border-bottom: 1px solid var(--rule);
}

.masthead::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -4px;
  height: 1px;
  background: var(--rule);
}

.brand-mark {
  font-family: var(--font-display);
  font-weight: 400;
  font-style: italic;
  font-size: clamp(56px, 11vw, 120px);
  line-height: 0.82;
  letter-spacing: -0.025em;
  font-variation-settings: 'opsz' 144;
  color: var(--ink);
  text-transform: lowercase;
}

.brand-mark__dot {
  color: var(--accent);
  font-style: normal;
  font-weight: 500;
}

/* Decorative "barcode" strip under the wordmark */
.brand-strip {
  height: 14px;
  width: clamp(180px, 28vw, 280px);
  margin-top: 12px;
  background-image: repeating-linear-gradient(
    to right,
    var(--ink) 0 1px, transparent 1px 3px,
    var(--ink) 3px 5px, transparent 5px 6px,
    var(--ink) 6px 9px, transparent 9px 11px,
    var(--ink) 11px 12px, transparent 12px 14px,
    var(--ink) 14px 17px, transparent 17px 19px,
    var(--ink) 19px 20px, transparent 20px 23px,
    var(--ink) 23px 26px, transparent 26px 28px
  );
  background-size: 28px 100%;
}

.brand-sub {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--ink-mute);
  text-transform: uppercase;
  margin-top: 10px;
}

.masthead__meta {
  display: flex;
  gap: 20px;
  align-items: center;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  flex-shrink: 0;
  padding-bottom: 6px;
}

.meta-pair { display: inline-flex; gap: 8px; align-items: baseline; }
.meta-key  { color: var(--ink-mute); }
.meta-val  { font-weight: 600; }

.status {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  padding: 5px 11px;
  background: var(--ink);
  color: var(--bg);
  font-weight: 600;
  letter-spacing: 0.12em;
}

.status-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: #6cd16c;
  box-shadow: 0 0 6px rgba(108, 209, 108, 0.6);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%      { opacity: 0.5; transform: scale(0.8); }
}

@media (max-width: 720px) {
  .masthead { flex-direction: column; align-items: flex-start; gap: 18px; padding-top: 12px; }
  .masthead__meta { flex-wrap: wrap; gap: 12px; padding-bottom: 0; }
}

/* ── GRID ────────────────────────────────────────────────────────────── */

.grid {
  display: grid;
  grid-template-columns: minmax(320px, 420px) 1fr;
  gap: 64px;
  margin-top: 48px;
}

@media (max-width: 920px) {
  .grid { grid-template-columns: 1fr; gap: 32px; margin-top: 32px; }
}

/* ── FIELD ───────────────────────────────────────────────────────────── */

.field { margin-bottom: 36px; }
.field:last-child { margin-bottom: 0; }

.field__head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.field__num {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 16px;
  color: var(--accent);
  font-weight: 500;
  letter-spacing: 0;
  text-transform: none;
  font-variation-settings: 'opsz' 14;
  min-width: 22px;
}

.field__num--alt {
  font-family: var(--font-mono);
  font-style: normal;
  font-size: 10px;
  letter-spacing: 0.1em;
}

.field__label {
  font-weight: 600;
  letter-spacing: 0.2em;
}

.field__rule {
  flex: 1;
  height: 1px;
  background: var(--rule);
  margin: 0 4px;
}

.field__meta {
  color: var(--ink-mute);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: lowercase;
  font-variant-numeric: tabular-nums;
}

/* ── INPUTS ──────────────────────────────────────────────────────────── */

.input {
  width: 100%;
  font-family: var(--font-mono);
  font-size: 18px;
  padding: 14px 0 12px;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--rule);
  color: var(--ink);
  outline: none;
  letter-spacing: 0.01em;
  transition: border-color 0.18s ease;
}

.input:focus       { border-bottom-color: var(--accent); }
.input::placeholder{ color: var(--ink-mute); opacity: 0.55; }

.input--select {
  appearance: none;
  -webkit-appearance: none;
  font-size: 14px;
  cursor: pointer;
  padding-right: 28px;
  background-image:
    linear-gradient(45deg, transparent 50%, var(--ink) 50%),
    linear-gradient(135deg, var(--ink) 50%, transparent 50%);
  background-position:
    calc(100% - 12px) calc(50% + 1px),
    calc(100% - 7px) calc(50% + 1px);
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
}

.error {
  color: var(--accent);
  font-size: 11px;
  margin-top: 10px;
  letter-spacing: 0.04em;
  min-height: 14px;
}

.error:not(:empty)::before {
  content: 'ERR ─ ';
  opacity: 0.7;
}

/* ── CONTROLS ────────────────────────────────────────────────────────── */

.control {
  margin-bottom: 18px;
  transition: opacity 0.2s ease;
}

.control[data-disabled="true"] {
  opacity: 0.35;
  pointer-events: none;
}

.control__label {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: 8px;
}

.control__val {
  color: var(--ink);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  font-size: 12px;
}

.slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 22px;
  background: transparent;
  cursor: pointer;
  margin: 0;
  display: block;
}

.slider::-webkit-slider-runnable-track {
  height: 1px;
  background: var(--rule);
  border: none;
}
.slider::-moz-range-track {
  height: 1px;
  background: var(--rule);
  border: none;
}

.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 12px; height: 12px;
  background: var(--ink);
  border: none;
  border-radius: 0;
  margin-top: -5.5px;
  transition: background 0.15s, transform 0.15s;
}
.slider::-webkit-slider-thumb:hover  { background: var(--accent); }
.slider::-webkit-slider-thumb:active { transform: scale(1.15); }

.slider::-moz-range-thumb {
  width: 12px; height: 12px;
  background: var(--ink);
  border: none;
  border-radius: 0;
  transition: background 0.15s;
}
.slider::-moz-range-thumb:hover { background: var(--accent); }

.ticks {
  display: flex;
  justify-content: space-between;
  margin-top: 4px;
  padding: 0 5px;
  height: 4px;
}
.ticks span {
  width: 1px;
  height: 4px;
  background: var(--rule-soft);
}

/* ── CHECKBOX ────────────────────────────────────────────────────────── */

.check {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  font-size: 12px;
  letter-spacing: 0.04em;
  user-select: none;
  margin-top: 6px;
  position: relative;
}

.check input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
  width: 0; height: 0;
}

.check__box {
  width: 14px; height: 14px;
  border: 1px solid var(--rule);
  background: transparent;
  position: relative;
  transition: all 0.15s;
  flex-shrink: 0;
  display: inline-block;
}

.check input:checked + .check__box {
  background: var(--ink);
  border-color: var(--ink);
}

.check input:checked + .check__box::after {
  content: '';
  position: absolute;
  top: 1px; left: 4px;
  width: 4px; height: 8px;
  border: solid var(--bg);
  border-width: 0 1.5px 1.5px 0;
  transform: rotate(45deg);
}

.check input:focus-visible + .check__box {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ── PREVIEW ─────────────────────────────────────────────────────────── */

.preview {
  background: var(--bg-card);
  border: 1px solid var(--rule);
  padding: 56px 40px;
  position: relative;
  min-height: 280px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.bracket {
  position: absolute;
  width: 14px; height: 14px;
  border-color: var(--accent);
  border-style: solid;
  border-width: 0;
}
.bracket--tl { top: 8px;    left: 8px;    border-top-width: 1px; border-left-width: 1px; }
.bracket--tr { top: 8px;    right: 8px;   border-top-width: 1px; border-right-width: 1px; }
.bracket--bl { bottom: 8px; left: 8px;    border-bottom-width: 1px; border-left-width: 1px; }
.bracket--br { bottom: 8px; right: 8px;   border-bottom-width: 1px; border-right-width: 1px; }

.preview__inner {
  display: flex;
  align-items: center;
  justify-content: center;
  max-width: 100%;
  max-height: 360px;
  overflow: auto;
}

.preview__inner svg {
  max-width: 100%;
  height: auto;
  display: block;
}

.preview__placeholder {
  color: var(--ink-mute);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.preview-info {
  display: flex;
  gap: 12px;
  margin-top: 12px;
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-mute);
  font-variant-numeric: tabular-nums;
}

.dim-sep { color: var(--rule-soft); }

/* ── EXPORT BUTTONS ──────────────────────────────────────────────────── */

.export-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}

@media (max-width: 480px) {
  .export-grid { grid-template-columns: repeat(2, 1fr); }
}

.btn {
  font-family: var(--font-mono);
  background: transparent;
  border: 1px solid var(--rule);
  padding: 18px 12px;
  cursor: pointer;
  color: var(--ink);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  letter-spacing: 0.06em;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease, transform 0.05s ease;
  outline: none;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 3px;
  border: 1px solid transparent;
  pointer-events: none;
  transition: border-color 0.15s ease;
}

.btn:hover:not(:disabled),
.btn:focus-visible:not(:disabled) {
  background: var(--ink);
  color: var(--bg);
  border-color: var(--ink);
}

.btn:hover:not(:disabled)::before,
.btn:focus-visible:not(:disabled)::before {
  border-color: rgba(239, 233, 220, 0.25);
}

.btn:hover:not(:disabled) .btn__hint,
.btn:focus-visible:not(:disabled) .btn__hint {
  color: rgba(239, 233, 220, 0.6);
}

.btn:active:not(:disabled) { transform: translateY(1px); }
.btn:disabled              { opacity: 0.35; cursor: not-allowed; }

.btn__fmt {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.1em;
}

.btn__hint {
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--ink-mute);
  transition: color 0.15s ease;
}

/* ── FOOTER ──────────────────────────────────────────────────────────── */

.footer {
  margin-top: 64px;
}

.footer__rule {
  height: 1px;
  background: var(--rule);
}

.footer__row {
  display: flex;
  justify-content: space-between;
  padding: 16px 0 0;
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-mute);
}

.footer__center { text-align: center; }

@media (max-width: 720px) {
  .footer__row {
    flex-direction: column;
    gap: 4px;
    align-items: flex-start;
  }
  .footer__center { text-align: left; }
}

/* ── COPY BUTTON ─────────────────────────────────────────────────────── */

.copy-btn {
  position: absolute;
  top: 10px;
  right: 10px;
  z-index: 2;
  width: 32px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  background: transparent;
  border: 1px solid transparent;
  color: var(--ink-mute);
  cursor: pointer;
  transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease, transform 0.08s ease;
  outline: none;
  border-radius: 0;
}

.copy-btn:hover:not(:disabled) {
  background: rgba(12, 12, 12, 0.05);
  border-color: var(--rule-soft);
  color: var(--ink);
}

.copy-btn:active:not(:disabled) {
  transform: scale(0.94);
}

.copy-btn:focus-visible {
  outline: 1px solid var(--accent);
  outline-offset: 2px;
}

.copy-btn:disabled {
  opacity: 0.25;
  cursor: not-allowed;
}

.copy-btn[data-state="ok"] {
  color: #2d8f2d;
  background: transparent;
  border-color: transparent;
}

.copy-btn[data-state="error"] {
  color: var(--accent);
}

.copy-btn__svg {
  display: block;
  pointer-events: none;
}

.copy-btn__icon-ok { display: none; }

.copy-btn[data-state="ok"] .copy-btn__icon-default { display: none; }
.copy-btn[data-state="ok"] .copy-btn__icon-ok      { display: block; }