:root {
  --bg: #f4f5f7; --card: #fff; --ink: #1d2433; --muted: #5d6676; --line: #dfe3ea;
  --brand: #1f4fd1; --brand-ink: #fff; --ok: #157a46; --warn: #a15c00; --bad: #b42318;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font-size: 16px; line-height: 1.5; }
h1 { font-size: 1.35rem; margin: 0 0 .5rem; }
h2 { font-size: 1.1rem; margin: 0 0 .75rem; }
.wrap { max-width: 960px; margin: 0 auto; padding: 16px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 20px; margin: 0 0 16px; box-shadow: 0 1px 2px rgba(16,24,40,.04); }
.visor .card { max-width: 420px; margin: 12vh auto 0; text-align: center; }
.muted { color: var(--muted); }
.center { text-align: center; }
.err { color: var(--bad); min-height: 1.5em; margin: .5rem 0 0; }
.btn { appearance: none; border: 1px solid var(--brand); background: var(--brand); color: var(--brand-ink); border-radius: 8px; padding: .6rem 1rem; font: inherit; font-weight: 600; cursor: pointer; }
.btn:disabled { opacity: .6; cursor: default; }
.btn.ghost { background: transparent; color: var(--brand); }
.btn.danger { background: transparent; border-color: var(--bad); color: var(--bad); }
.btn.sm { padding: .35rem .7rem; font-size: .9rem; }
input, select { font: inherit; border: 1px solid var(--line); border-radius: 8px; padding: .55rem .7rem; background: #fff; color: var(--ink); max-width: 100%; }
label { display: block; font-size: .9rem; color: var(--muted); margin-bottom: .25rem; }
.code-input { display: block; width: 100%; max-width: 220px; margin: 1rem auto; text-align: center; font-size: 2rem; letter-spacing: .5em; padding-left: 1em; text-transform: uppercase; font-family: ui-monospace, Menlo, monospace; }

/* Visor */
.bar { position: sticky; top: 0; z-index: 2; display: flex; gap: 12px; align-items: center; flex-wrap: wrap; background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 10px 14px; margin-bottom: 16px; }
.doc-name { font-weight: 600; flex: 1 1 160px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.timer { font-variant-numeric: tabular-nums; color: var(--warn); font-weight: 600; }
.pages { display: flex; flex-direction: column; align-items: center; gap: 16px; user-select: none; -webkit-user-select: none; -webkit-touch-callout: none; }
.pages canvas { width: 100%; max-width: 900px; height: auto; background: #fff; box-shadow: 0 1px 3px rgba(16,24,40,.12); }
#print-area { display: none; }

/* Admin */
.row { display: flex; gap: 12px; flex-wrap: wrap; align-items: flex-end; }
.row > div { flex: 1 1 140px; }
.row > div.fit { flex: 0 0 auto; }
.doc { border-top: 1px solid var(--line); padding-top: 16px; margin-top: 16px; }
.doc:first-of-type { border-top: 0; margin-top: 0; padding-top: 0; }
.doc-head { display: flex; justify-content: space-between; gap: 8px; flex-wrap: wrap; align-items: baseline; }
.acc { border: 1px solid var(--line); border-radius: 8px; padding: 12px; margin-top: 10px; display: grid; grid-template-columns: auto 1fr auto; gap: 6px 14px; align-items: center; }
.acc .code { font-family: ui-monospace, Menlo, monospace; font-size: 1.4rem; font-weight: 700; letter-spacing: .15em; }
.acc .meta { font-size: .9rem; color: var(--muted); min-width: 0; overflow-wrap: anywhere; }
.acc .actions { display: flex; gap: 6px; flex-wrap: wrap; justify-content: flex-end; }
.tag { display: inline-block; font-size: .8rem; font-weight: 600; border-radius: 999px; padding: .1rem .55rem; border: 1px solid currentColor; }
.tag.pending { color: var(--brand); } .tag.open { color: var(--ok); } .tag.closed { color: var(--muted); }
.new-acc { background: #f0f5ff; border: 1px solid #c9d8fb; border-radius: 8px; padding: 12px; margin-top: 10px; overflow-wrap: anywhere; }
.toast { position: fixed; left: 50%; bottom: 20px; transform: translateX(-50%); background: var(--ink); color: #fff; padding: .5rem 1rem; border-radius: 8px; font-size: .9rem; }
@media (max-width: 560px) {
  .acc { grid-template-columns: 1fr; }
  .acc .actions { justify-content: flex-start; }
}

/* Impresión: solo las páginas del documento, nada de la interfaz. */
@media print {
  @page { margin: 0; }
  body { background: #fff; }
  #app, .toast { display: none !important; }
  #print-area { display: block; }
  #print-area img { display: block; width: 100%; height: auto; page-break-after: always; break-after: page; }
  #print-area img:last-child { page-break-after: auto; break-after: auto; }
}

/* Utilidades (la CSP no permite estilos en línea) */
.login-card { max-width: 380px; margin: 12vh auto 0; }
.full { width: 100%; }
.w90 { width: 90px; }
.mt { margin-top: 10px; }
.mb { margin-bottom: 16px; }
.row > div { min-width: 0; }
input[type=file] { width: 100%; }
.codes { display: flex; gap: 16px; }
.codes small { display: block; font-size: .75rem; color: var(--muted); }