:root {
  --page: #e9edf1;
  --panel: #ffffff;
  --ink: #101820;
  --muted: #56626f;
  --line: #c6cfd8;
  --mark: #ffd23f;
  --danger: #b3261e;
  --radius: 6px;
  --font: "Segoe UI", "Noto Sans", "Helvetica Neue", Arial, system-ui, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font: 16px/1.5 var(--font);
}

.sr-only {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap;
}

.top { max-width: 1080px; margin: 0 auto; padding: 32px 20px 8px; }
.top h1 { margin: 0; font-size: 1.75rem; letter-spacing: -0.01em; }
.top p { margin: 4px 0 0; color: var(--muted); }

.layout {
  max-width: 1080px; margin: 0 auto; padding: 16px 20px;
  display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr); gap: 24px;
  align-items: start;
}

.panel {
  background: var(--panel); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 20px;
}

/* Tab */
.tabs { display: flex; gap: 4px; margin-bottom: 18px; border-bottom: 2px solid var(--ink); }
.tabs button {
  font: inherit; font-weight: 600; padding: 8px 16px; cursor: pointer;
  background: transparent; border: 0; color: var(--muted);
  border-radius: var(--radius) var(--radius) 0 0;
}
.tabs button[aria-selected="true"] { background: var(--mark); color: var(--ink); }
.tabs button:hover { color: var(--ink); }

/* Form */
.field { display: block; margin-bottom: 14px; font-weight: 600; font-size: 0.925rem; }
.field input, .field select, .field textarea {
  display: block; width: 100%; margin-top: 4px; padding: 9px 10px;
  font: inherit; font-weight: 400; color: var(--ink);
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
}
.field textarea { resize: vertical; }
.field input[type="color"] { height: 40px; padding: 3px; cursor: pointer; }
.check { display: flex; gap: 8px; align-items: center; font-size: 0.925rem; margin: 6px 0 14px; }
.hint { display: block; margin-top: 4px; font-weight: 400; color: var(--muted); }
.row { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; align-items: end; }
.common { border-top: 1px dashed var(--line); padding-top: 16px; margin-top: 4px; }
.logo-box { border-top: 1px dashed var(--line); padding-top: 16px; margin-top: 4px; }
.logo-box input[type="range"] { padding: 0; border: 0; accent-color: var(--ink); }
.logo-box input[type="file"] { padding: 7px 8px; }
.logo-box .row button { margin-bottom: 14px; }

:focus-visible { outline: 3px solid #2457d6; outline-offset: 2px; }

/* Pratinjau berbentuk label cetak */
.preview-col { position: sticky; top: 16px; }
.ticket {
  background: var(--panel); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 20px 20px 16px;
}
.preview {
  min-height: 240px; display: grid; place-items: center;
  background: repeating-conic-gradient(#f4f6f8 0% 25%, #fff 0% 50%) 50% / 16px 16px;
  border-radius: var(--radius); padding: 12px; overflow: auto;
}
.preview canvas { max-width: 100%; height: auto; box-shadow: 0 0 0 1px var(--line); }
.preview .placeholder { color: var(--muted); text-align: center; margin: 0; padding: 24px; }

.perforation {
  position: relative; margin: 18px -20px 14px;
  border-top: 2px dashed var(--line);
}
.perforation::before, .perforation::after {
  content: ""; position: absolute; top: -11px; width: 20px; height: 20px;
  background: var(--page); border: 1px solid var(--line); border-radius: 50%;
}
.perforation::before { left: -11px; }
.perforation::after { right: -11px; }

.actions { display: flex; flex-wrap: wrap; gap: 10px; }
button {
  font: inherit; font-weight: 600; padding: 10px 16px; cursor: pointer;
  border: 1.5px solid var(--ink); background: #fff; color: var(--ink);
  border-radius: var(--radius);
}
button.primary { background: var(--ink); color: #fff; }
button:disabled { opacity: 0.4; cursor: not-allowed; }
button:not(:disabled):hover { background: var(--mark); color: var(--ink); }

.status { min-height: 1.5em; margin: 10px 0 0; color: var(--muted); font-size: 0.9rem; }
.error { margin: 10px 0 0; color: var(--danger); font-weight: 600; }

@media (max-width: 820px) {
  .layout { grid-template-columns: 1fr; }
  .preview-col { position: static; }
}

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