:root {
  --bg: #f4f6f9;
  --karte: #ffffff;
  --rahmen: #e1e5ea;
  --text: #1f2933;
  --muted: #6b7280;
  --primaer: #2563eb;
  --primaer-dunkel: #1d4ed8;
  --ok: #15803d;
  --ok-bg: #dcfce7;
  --warn: #b45309;
  --warn-bg: #fef3c7;
  --error: #b91c1c;
  --error-bg: #fee2e2;
}

* { box-sizing: border-box; }

/* Das hidden-Attribut soll immer wirken, auch bei display:flex-Elementen. */
[hidden] { display: none !important; }

body {
  margin: 0;
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

header {
  background: var(--primaer);
  color: #fff;
  padding: 24px 16px;
  text-align: center;
}
header h1 { margin: 0; font-size: 1.8rem; }
.untertitel { margin: 4px 0 0; opacity: 0.9; }

main {
  max-width: 980px;
  margin: 0 auto;
  padding: 20px 16px 60px;
}

.karte {
  background: var(--karte);
  border: 1px solid var(--rahmen);
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 20px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

.abschnitt-kopf {
  width: 100%;
  background: none;
  border: none;
  font-size: 1.1rem;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  padding: 0;
  color: var(--text);
}
.abschnitt-kopf .pfeil { transition: transform 0.2s; }
.abschnitt-kopf[aria-expanded="true"] .pfeil { transform: rotate(90deg); }
.abschnitt-body { margin-top: 16px; }

label {
  display: block;
  margin-bottom: 14px;
  font-weight: 500;
}
input[type="text"], input[type="password"], input[type="number"], textarea {
  width: 100%;
  margin-top: 6px;
  padding: 9px 10px;
  border: 1px solid var(--rahmen);
  border-radius: 8px;
  font: inherit;
  font-weight: 400;
}
textarea { resize: vertical; }

.hinweis { color: var(--muted); font-size: 0.9rem; margin: 4px 0; }
.ok-text { color: var(--ok); font-weight: 600; margin-left: 10px; }

.upload-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
@media (max-width: 640px) {
  .upload-grid { grid-template-columns: 1fr; }
}
.upload-feld {
  border: 2px dashed var(--rahmen);
  border-radius: 10px;
  padding: 16px;
  text-align: center;
}
.upload-feld.dragover { border-color: var(--primaer); background: #eff6ff; }
.upload-feld h2 { margin: 0 0 4px; font-size: 1.1rem; }
.upload-feld input[type="file"] { margin-top: 10px; width: 100%; }
.dateiname { font-size: 0.9rem; color: var(--primaer); font-weight: 600; min-height: 1.2em; }

.btn-primaer, .btn-sekundaer {
  border: none;
  border-radius: 8px;
  padding: 12px 22px;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}
.btn-primaer {
  background: var(--primaer);
  color: #fff;
  margin-top: 18px;
  width: 100%;
  font-size: 1.05rem;
}
.btn-primaer:hover { background: var(--primaer-dunkel); }
.btn-primaer:disabled { background: #9db7f0; cursor: not-allowed; }
.btn-sekundaer { background: #eef2ff; color: var(--primaer-dunkel); }

.lade {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--karte);
  border: 1px solid var(--rahmen);
  border-radius: 12px;
  padding: 16px 20px;
  margin-bottom: 20px;
}
.spinner {
  width: 22px; height: 22px;
  border: 3px solid var(--rahmen);
  border-top-color: var(--primaer);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.fehler {
  background: var(--error-bg);
  color: var(--error);
  border: 1px solid #fca5a5;
  border-radius: 12px;
  padding: 14px 18px;
  margin-bottom: 20px;
  font-weight: 500;
}

.zusammenfassung {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}
.bilanz {
  border-radius: 10px;
  padding: 10px 18px;
  font-weight: 700;
  font-size: 1.05rem;
}
.bilanz.ok { background: var(--ok-bg); color: var(--ok); }
.bilanz.warn { background: var(--warn-bg); color: var(--warn); }
.bilanz.error { background: var(--error-bg); color: var(--error); }

.tabelle {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 24px;
  font-size: 0.95rem;
}
.tabelle th, .tabelle td {
  text-align: left;
  padding: 9px 10px;
  border-bottom: 1px solid var(--rahmen);
  vertical-align: top;
}
.tabelle th { background: #f8fafc; font-weight: 600; }

.badge {
  display: inline-block;
  min-width: 70px;
  text-align: center;
  border-radius: 999px;
  padding: 2px 10px;
  font-size: 0.82rem;
  font-weight: 700;
}
.badge.ok { background: var(--ok-bg); color: var(--ok); }
.badge.warn { background: var(--warn-bg); color: var(--warn); }
.badge.error { background: var(--error-bg); color: var(--error); }

tr.zeile-error td { background: #fff5f5; }
tr.zeile-warn td { background: #fffbeb; }

.rohdaten { margin-top: 10px; }
.rohdaten pre {
  background: #0f172a;
  color: #e2e8f0;
  padding: 14px;
  border-radius: 8px;
  overflow: auto;
  font-size: 0.85rem;
}

footer {
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
  padding: 10px 16px 30px;
}

/* --- Tabs --- */
.tabs {
  display: flex;
  gap: 6px;
  border-bottom: 2px solid var(--rahmen);
  margin-bottom: 18px;
}
.tab-btn {
  background: none;
  border: none;
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
  padding: 10px 16px;
  font: inherit;
  font-weight: 600;
  color: var(--muted);
  cursor: pointer;
}
.tab-btn:hover { color: var(--text); }
.tab-btn.aktiv {
  color: var(--primaer);
  border-bottom-color: var(--primaer);
}

/* --- PDF-Vorschau mit Feedback --- */
.vorschau-layout {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 16px;
  align-items: start;
}
@media (max-width: 800px) {
  .vorschau-layout { grid-template-columns: 1fr; }
}
.vorschau-dokument {
  border: 1px solid var(--rahmen);
  border-radius: 8px;
  overflow: auto;
  background: #f1f5f9;
  min-height: 70vh;
  max-height: 80vh;
}
/* Fallback-Ansicht (iframe / direktes Bild ohne Markierungen) */
.vorschau-dokument > iframe,
.vorschau-dokument > img {
  width: 100%;
  height: 75vh;
  border: none;
  display: block;
}
.vorschau-dokument > img { object-fit: contain; height: auto; max-height: 75vh; }
.vorschau-hinweis { padding: 20px; color: var(--muted); }

/* Zoom-Leiste über der Vorschau */
.vorschau-toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
}
.vorschau-toolbar .zoom-btn {
  width: 34px;
  height: 34px;
  border: 1px solid var(--rahmen);
  background: #fff;
  border-radius: 8px;
  font-size: 1.1rem;
  font-weight: 700;
  cursor: pointer;
  line-height: 1;
}
.vorschau-toolbar .zoom-btn:hover { background: #eef2ff; }
.vorschau-toolbar .zoom-stand { min-width: 52px; text-align: center; font-weight: 600; }
.vorschau-toolbar .zoom-info { color: var(--muted); font-size: 0.85rem; margin-left: auto; }

/* Container, dessen Breite den Zoom steuert (Bild + Overlays skalieren zusammen) */
.vorschau-seiten {
  width: 100%;
  transform-origin: top left;
}

.vorschau-feedback {
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-height: 75vh;
  overflow-y: auto;
}
.fb-karte {
  border: 1px solid var(--rahmen);
  border-left-width: 5px;
  border-radius: 8px;
  padding: 10px 12px;
  background: #fff;
}
.fb-karte.ok { border-left-color: var(--ok); }
.fb-karte.warn { border-left-color: var(--warn); background: #fffbeb; }
.fb-karte.error { border-left-color: var(--error); background: #fff5f5; }
.fb-kopf {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  margin-bottom: 4px;
}
.fb-kopf .kat { color: var(--muted); font-weight: 500; font-size: 0.85rem; }
.fb-detail { font-size: 0.9rem; }

/* --- Annotierte Seitenbilder (Markierungen direkt auf der Rechnung) --- */
.seite-wrap {
  position: relative;
  margin-bottom: 14px;
  line-height: 0;
  border: 1px solid var(--rahmen);
  border-radius: 6px;
  overflow: hidden;
}
.seite-wrap img { width: 100%; height: auto; display: block; }
.anno {
  position: absolute;
  border: 2px solid;
  border-radius: 3px;
  box-sizing: border-box;
  cursor: pointer;
}
.anno.ok { border-color: var(--ok); background: rgba(21, 128, 61, 0.12); }
.anno.warn { border-color: var(--warn); background: rgba(180, 83, 9, 0.14); }
.anno.error { border-color: var(--error); background: rgba(185, 28, 28, 0.14); }
.anno-num {
  position: absolute;
  top: -10px;
  left: -10px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}
.anno.ok .anno-num { background: var(--ok); }
.anno.warn .anno-num { background: var(--warn); }
.anno.error .anno-num { background: var(--error); }
.anno.markiert { outline: 3px solid #0ea5e9; outline-offset: 1px; }

.fb-karte .fb-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  margin-right: 4px;
}
.fb-karte.ok .fb-num { background: var(--ok); }
.fb-karte.warn .fb-num { background: var(--warn); }
.fb-karte.error .fb-num { background: var(--error); }

/* --- Mitarbeiter nur im Stundenzettel --- */
.nur-zettel-kopf {
  margin-top: 8px;
  font-size: 1rem;
  color: var(--warn);
}
.warn-text { color: var(--warn); font-weight: 600; }
tr.zeile-markiert td { background: #fffbeb; }