:root {
  --bg: #ffffff;
  --surface: #ffffff;
  --surface-2: #f3f5f4;
  --border: #dfe4e2;
  --ink: #121a1f;
  --ink-soft: #5b6b68;
  --accent: #0999a1;
  --accent-ink: #ffffff;
  --accent-soft: #e1f2f3;
  --danger: #c94a3f;
  --warn: #b8860b;
  --ok: #2f9e5b;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(18,26,31,0.06), 0 4px 12px rgba(18,26,31,0.05);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: 'Archivo', system-ui, sans-serif;
  padding-bottom: 3rem;
}

code, .mono, .folio { font-family: 'IBM Plex Mono', ui-monospace, monospace; }

header.topbar {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.9rem 1.25rem;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  position: sticky;
  top: 0;
  z-index: 20;
}
header.topbar img.brand-logo { height: 36px; width: auto; }
header.topbar .brand-title { font-weight: 700; font-size: 1.05rem; }
header.topbar .brand-sub { font-size: 0.78rem; color: var(--ink-soft); }
header.topbar .spacer { flex: 1; }

nav.tabs {
  display: flex;
  gap: 0.4rem;
  padding: 0.6rem 1.25rem;
  border-bottom: 1px solid var(--border);
  background: var(--surface-2);
  overflow-x: auto;
}
nav.tabs button {
  border: 1px solid transparent;
  background: transparent;
  color: var(--ink-soft);
  padding: 0.45rem 0.9rem;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
}
nav.tabs button.active {
  background: var(--accent);
  color: var(--accent-ink);
}
nav.tabs button:not(.active):hover { background: var(--border); }

main { max-width: 980px; margin: 0 auto; padding: 1.5rem 1.25rem; }

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow);
  margin-bottom: 1.25rem;
}
.panel h2 { margin-top: 0; font-size: 1.1rem; }
.panel h3 { font-size: 0.95rem; color: var(--ink-soft); text-transform: uppercase; letter-spacing: 0.03em; }

.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.9rem; }
@media (max-width: 640px) { .grid { grid-template-columns: 1fr; } }

label { display: block; font-size: 0.82rem; font-weight: 600; margin-bottom: 0.3rem; color: var(--ink); }
.field { margin-bottom: 0.9rem; }
input, select, textarea {
  width: 100%;
  padding: 0.55rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.92rem;
  font-family: inherit;
  background: #fff;
  color: var(--ink);
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent-soft); border-color: var(--accent); }
textarea { min-height: 90px; resize: vertical; }

button.btn {
  background: var(--accent);
  color: var(--accent-ink);
  border: none;
  padding: 0.6rem 1.1rem;
  border-radius: 8px;
  font-weight: 700;
  font-size: 0.9rem;
  cursor: pointer;
}
button.btn:hover { filter: brightness(0.95); }
button.btn.secondary { background: var(--surface-2); color: var(--ink); border: 1px solid var(--border); }
button.btn.danger { background: var(--danger); }
button.btn:disabled { opacity: 0.5; cursor: not-allowed; }
button.btn-sm { padding: 0.35rem 0.7rem; font-size: 0.78rem; border-radius: 6px; }

table { width: 100%; border-collapse: collapse; font-size: 0.85rem; }
th, td { text-align: left; padding: 0.5rem 0.6rem; border-bottom: 1px solid var(--border); }
th { color: var(--ink-soft); font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.03em; }
tr:hover td { background: var(--surface-2); }
.table-wrap { overflow-x: auto; }

.badge {
  display: inline-block;
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 700;
}
.badge.ok { background: #e4f6ea; color: var(--ok); }
.badge.warn { background: #fdf3d8; color: var(--warn); }
.badge.danger { background: #fbe6e3; color: var(--danger); }
.badge.neutral { background: var(--surface-2); color: var(--ink-soft); }

.kpi-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0.9rem; }
@media (max-width: 800px) { .kpi-grid { grid-template-columns: repeat(2, 1fr); } }
.kpi { background: var(--accent-soft); border-radius: var(--radius); padding: 1rem; }
.kpi .value { font-size: 1.6rem; font-weight: 800; color: var(--accent); }
.kpi .label { font-size: 0.78rem; color: var(--ink-soft); }

.hint { font-size: 0.8rem; color: var(--ink-soft); }
[hidden] { display: none !important; }

.modal-backdrop {
  position: fixed; inset: 0; background: rgba(18,26,31,0.45);
  display: flex; align-items: center; justify-content: center; z-index: 50; padding: 1rem;
}
.modal {
  background: var(--surface); border-radius: var(--radius); padding: 1.5rem;
  width: 100%; max-width: 360px; box-shadow: var(--shadow);
}
.modal h2 { margin-top: 0; }

.folio-result {
  background: var(--accent-soft); border-radius: var(--radius); padding: 1rem;
  text-align: center; margin-top: 1rem;
}
.folio-result .folio { font-size: 1.3rem; font-weight: 800; color: var(--accent); }

#label-canvas { display: block; margin: 0 auto; border: 1px solid var(--border); border-radius: 8px; }

.toolbar { display: flex; gap: 0.6rem; flex-wrap: wrap; align-items: center; margin-bottom: 1rem; }
.toolbar .spacer { flex: 1; }

.user-chip { font-size: 0.8rem; color: var(--ink-soft); display: flex; align-items: center; gap: 0.5rem; }