:root {
  --ink: #14212b;
  --muted: #5b6b76;
  --line: #d8dee2;
  --bg: #f5f7f8;
  --paper: #fff;
  --accent: #1e7a4c;
  --accent-dark: #145a37;
  --warn: #b4740e;
  --danger: #b3261e;
  --radius: 10px;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: -apple-system, Segoe UI, Roboto, Arial, sans-serif; background: var(--bg); color: var(--ink); }
.hidden { display: none !important; }

.topbar {
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
  padding: 10px 16px; background: var(--paper); border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 10;
}
.brand { font-weight: 800; }
.badge { font-size: 10px; background: var(--warn); color: #fff; padding: 2px 6px; border-radius: 6px; vertical-align: middle; }
.nav { display: flex; gap: 6px; flex-wrap: wrap; flex: 1; }
.nav button {
  background: none; border: 1px solid transparent; padding: 6px 10px; border-radius: 8px; cursor: pointer; font-size: 13px; color: var(--muted);
}
.nav button.active, .nav button:hover { background: #eef3f0; color: var(--accent-dark); border-color: var(--line); }
.userbox { font-size: 13px; color: var(--muted); display: flex; align-items: center; gap: 8px; }
.userbox button { border: 1px solid var(--line); background: #fff; border-radius: 8px; padding: 4px 10px; cursor: pointer; }

.app { max-width: 1100px; margin: 0 auto; padding: 16px; }

.card { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; margin-bottom: 16px; }
.card h2 { margin-top: 0; font-size: 16px; }
.card h3 { font-size: 14px; color: var(--muted); }

.grid { display: grid; gap: 12px; }
.grid-2 { grid-template-columns: 1fr 1fr; }
@media (max-width: 720px) { .grid-2 { grid-template-columns: 1fr; } .nav { justify-content: flex-start; } }

label { display: block; font-size: 12px; color: var(--muted); margin-bottom: 3px; margin-top: 8px; }
input, select, textarea, button.btn {
  width: 100%; padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px; font-size: 14px; font-family: inherit;
}
input[readonly] { background: #f0f2f3; color: #555; }
button.btn { background: var(--accent); color: #fff; border: none; cursor: pointer; font-weight: 600; width: auto; padding: 9px 16px; }
button.btn.secondary { background: #fff; color: var(--accent-dark); border: 1px solid var(--accent); }
button.btn.danger { background: var(--danger); }
button.btn.small { padding: 5px 10px; font-size: 12px; }
button.btn:disabled { opacity: .5; cursor: not-allowed; }

table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--line); }
th { color: var(--muted); font-weight: 600; font-size: 12px; text-transform: uppercase; }

.tag { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 11px; font-weight: 700; }
.tag.doc { background: #e8eefb; color: #1a4fa0; }
.tag.traz { background: #eaf6ee; color: var(--accent-dark); }
.tag.rev { background: #fff2df; color: var(--warn); }
.tag.responsable { background: #f1eaf7; color: #6b3fa0; }

.state-row { display: flex; gap: 6px; flex-wrap: wrap; margin: 6px 0 12px; }

.total-box { display: flex; justify-content: flex-end; align-items: center; gap: 10px; margin-top: 6px; font-weight: 700; }
.total-box input { width: 140px; text-align: right; font-weight: 800; }

.toast {
  position: fixed; bottom: 16px; left: 50%; transform: translateX(-50%);
  background: var(--ink); color: #fff; padding: 10px 18px; border-radius: 999px; font-size: 13px; z-index: 50;
}
.toast.error { background: var(--danger); }

.signature-box {
  border: 1.6px dashed var(--line); border-radius: 8px; min-height: 60px; display: flex; align-items: center; justify-content: center;
  color: var(--muted); font-size: 13px; cursor: pointer; background: #fafbfb;
}
.signature-box.signed { border-style: solid; border-color: var(--accent); color: var(--accent-dark); font-weight: 700; }

.help { font-size: 12px; color: var(--muted); margin-top: 4px; }
.empty { color: var(--muted); font-size: 13px; padding: 10px 0; }