:root {
  --buchhaltung-pane-width: 420px;
  --buchhaltung-pane-top: 108px;
}

.buchhaltung-pane {
  position: fixed;
  top: var(--buchhaltung-pane-top);
  right: 0;
  width: var(--buchhaltung-pane-width);
  height: calc(100vh - var(--buchhaltung-pane-top));
  background: var(--bg2);
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  z-index: 40;
  box-shadow: -8px 0 24px rgba(0,0,0,0.35);
}
.buchhaltung-pane[hidden] { display: none; }

body.buchhaltung-mode .chat-area,
body.buchhaltung-mode #input-area,
body.buchhaltung-mode #main,
body.buchhaltung-mode main { margin-right: var(--buchhaltung-pane-width); }

.buchhaltung-header {
  padding: 14px 18px; border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
  background: var(--bg3);
}
.buchhaltung-title { color: var(--page-accent); font-weight: 600; font-size: 14px; letter-spacing: 0.2px; }
.buchhaltung-close {
  background: none; border: none; color: var(--text-muted);
  font-size: 1.5rem; cursor: pointer; line-height: 1;
  border-radius: var(--radius-xs); padding: 2px 8px;
}
.buchhaltung-close:hover { color: var(--text); background: var(--bg4); }

.buchhaltung-subtabs {
  display: flex; gap: 2px; padding: 0 14px;
  border-bottom: 1px solid var(--border);
  background: var(--bg2);
}
.buchhaltung-subtab {
  background: none; border: none; color: var(--text-muted);
  padding: 11px 16px; font-size: 13px; cursor: pointer;
  border-bottom: 2px solid transparent; transition: color .15s, border-color .15s;
  font-family: inherit; font-weight: 500;
}
.buchhaltung-subtab:hover { color: var(--text); }
.buchhaltung-subtab.active { color: var(--page-accent); border-bottom-color: var(--page-accent); }

.buchhaltung-views { flex: 1; overflow-y: auto; padding: 14px 18px; }
.buchhaltung-view[hidden] { display: none; }

.bp-row {
  display: grid;
  grid-template-columns: 120px 1fr auto;
  gap: 10px; padding: 9px 0;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
  align-items: center;
}
.bp-row label {
  color: var(--text-muted); font-weight: 500;
  text-transform: uppercase; letter-spacing: 0.4px;
  font-size: 11px;
}
.bp-val {
  color: var(--text); font-variant-numeric: tabular-nums; word-break: break-word;
}
.bp-val.bp-konto { font-family: "SF Mono", Menlo, Monaco, monospace; font-size: 12.5px; }

.bp-copy {
  background: none; border: 1px solid transparent;
  width: 26px; height: 26px;
  color: var(--text-muted); cursor: pointer;
  border-radius: var(--radius-xs);
  display: inline-flex; align-items: center; justify-content: center;
  transition: color .12s, background .12s, border-color .12s;
  flex-shrink: 0;
}
.bp-copy::before {
  content: "";
  width: 14px; height: 14px;
  background-color: currentColor;
  -webkit-mask: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'><rect x='9' y='9' width='13' height='13' rx='2' ry='2'/><path d='M5 15H4a2 2 0 0 1-2-2V4a2 2 0 0 1 2-2h9a2 2 0 0 1 2 2v1'/></svg>") center/contain no-repeat;
          mask: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'><rect x='9' y='9' width='13' height='13' rx='2' ry='2'/><path d='M5 15H4a2 2 0 0 1-2-2V4a2 2 0 0 1 2-2h9a2 2 0 0 1 2 2v1'/></svg>") center/contain no-repeat;
}
.bp-copy:hover { color: var(--page-accent); background: var(--page-accent-soft); }
.bp-copy.copied { color: var(--green); border-color: var(--green); }
.bp-copy.copied::before {
  -webkit-mask: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'><polyline points='20 6 9 17 4 12'/></svg>") center/contain no-repeat;
          mask: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'><polyline points='20 6 9 17 4 12'/></svg>") center/contain no-repeat;
}

.buchhaltung-footer {
  padding: 12px 18px; border-top: 1px solid var(--border);
  color: var(--text-muted); font-size: 11px; text-align: center;
  background: var(--page-accent-soft);
}

#buchhaltung-tab.active { background: var(--page-accent-soft); color: var(--page-accent); border-radius: var(--radius-xs); }
#buchhaltung-tab.active .tab-title { color: var(--page-accent); }

@media (max-width: 900px) {
  .buchhaltung-pane { width: 100%; }
  body.buchhaltung-mode .chat-area,
  body.buchhaltung-mode #input-area,
  body.buchhaltung-mode #main,
  body.buchhaltung-mode main { margin-right: 0; }
}