:root {
  --tc-ink: #0f1419;
  --tc-muted: #5c6570;
  --tc-faint: #8b939c;
  --tc-line: #e8eaed;
  --tc-line-soft: #f0f2f4;
  --tc-bg: #f4f5f7;
  --tc-surface: #ffffff;
  --tc-accent: #1a5cff;
  --tc-accent-soft: rgba(26, 92, 255, 0.08);
  --tc-accent-hover: #0f45d1;
  --tc-danger: #d92d20;
  --tc-danger-soft: #fef3f2;
  --tc-ok: #067647;
  --tc-ok-soft: #ecfdf3;
  --tc-warn: #b54708;
  --tc-warn-soft: #fffaeb;
  --tc-radius: 12px;
  --tc-radius-sm: 8px;
  --tc-shadow: 0 1px 2px rgba(15, 20, 25, 0.04), 0 4px 16px rgba(15, 20, 25, 0.04);
  --tc-font: 'Inter', ui-sans-serif, system-ui, sans-serif;
  --tc-md-primary: #1a5cff;
  --tc-md-text: #0f1419;
  --tc-md-text-soft: #5c6570;
  --tc-md-border: #e8eaed;
  --tc-md-border-soft: #f0f2f4;
  --tc-md-bg-hover: #f7f8f9;
}

body {
  font-family: var(--tc-font);
  color: var(--tc-ink);
  background: var(--tc-bg);
  -webkit-font-smoothing: antialiased;
}

/* ——— Controls ——— */
.btn {
  padding: 0.55rem 1rem;
  border-radius: 999px;
  font-weight: 550;
  font-size: 0.875rem;
  letter-spacing: -0.01em;
  transition: background .15s ease, color .15s ease, box-shadow .15s ease, transform .1s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  border: 1px solid transparent;
  cursor: pointer;
  line-height: 1.2;
}
.btn:active:not(:disabled) { transform: scale(0.98); }
.btn-primary {
  background: var(--tc-accent);
  color: #fff;
  box-shadow: 0 1px 2px rgba(26, 92, 255, 0.25);
}
.btn-primary:hover { background: var(--tc-accent-hover); }
.btn-secondary {
  background: var(--tc-surface);
  color: var(--tc-ink);
  border-color: var(--tc-line);
}
.btn-secondary:hover { background: var(--tc-line-soft); }
.btn-danger {
  background: var(--tc-danger-soft);
  color: var(--tc-danger);
  border-color: transparent;
}
.btn-danger:hover { background: #fee4e2; }
.btn-ghost {
  background: transparent;
  color: var(--tc-muted);
}
.btn-ghost:hover { background: var(--tc-line-soft); color: var(--tc-ink); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; transform: none; }

.input, select.input, textarea.input {
  width: 100%;
  padding: 0.6rem 0.85rem;
  border: 1px solid var(--tc-line);
  border-radius: var(--tc-radius-sm);
  font-size: 0.875rem;
  background: var(--tc-surface);
  color: var(--tc-ink);
  transition: border-color .15s, box-shadow .15s;
}
.input:focus, select.input:focus, textarea.input:focus {
  outline: none;
  border-color: var(--tc-accent);
  box-shadow: 0 0 0 3px var(--tc-accent-soft);
}
select.input {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%235c6570' d='M1.4.6 6 5.2 10.6.6 12 2 6 8 0 2z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.9rem center;
  padding-right: 2.2rem;
}

.card {
  background: var(--tc-surface);
  border-radius: var(--tc-radius);
  border: 1px solid var(--tc-line);
  box-shadow: none;
}

.stat { padding: 1.25rem; }
.stat .label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--tc-faint);
  font-weight: 600;
}
.stat .value {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--tc-ink);
  margin-top: .25rem;
  letter-spacing: -0.03em;
}

.table { width: 100%; border-collapse: collapse; font-size: 0.875rem; }
.table th {
  text-align: left;
  padding: 0.85rem 1rem;
  color: var(--tc-faint);
  font-weight: 600;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: .05em;
  border-bottom: 1px solid var(--tc-line);
}
.table td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--tc-line-soft);
  vertical-align: top;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.01em;
}
.badge-ok { background: var(--tc-ok-soft); color: var(--tc-ok); }
.badge-warn { background: var(--tc-warn-soft); color: var(--tc-warn); }
.badge-fail { background: var(--tc-danger-soft); color: var(--tc-danger); }
.badge-run { background: var(--tc-accent-soft); color: var(--tc-accent); }
.badge-muted { background: var(--tc-line-soft); color: var(--tc-muted); }

.sidebar-link {
  border-radius: 10px !important;
  color: var(--tc-muted);
}
.sidebar-link:hover { background: var(--tc-line-soft) !important; color: var(--tc-ink) !important; }
.sidebar-link.active {
  background: var(--tc-accent-soft) !important;
  color: var(--tc-accent) !important;
  font-weight: 600;
}

/* ——— Systems / Testfolgen builder ——— */
.sys-shell { max-width: 1400px; margin: 0 auto; }

/* ——— Testcases tiles ——— */
.tc-layout {
  display: grid;
  grid-template-columns: minmax(280px, 380px) 1fr;
  gap: 1.25rem;
  align-items: stretch;
  min-height: 65vh;
}
@media (max-width: 960px) {
  .tc-layout { grid-template-columns: 1fr; }
}
.tc-grid-pane, .tc-detail-pane {
  padding: 0;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  min-height: 420px;
  max-height: min(78vh, 900px);
}
.tc-grid-pane .builder-pane-head,
.tc-detail-pane > .tc-detail,
.tc-detail-pane > .tc-empty { padding-left: 1rem; padding-right: 1rem; }
.tc-grid-pane .builder-pane-head { padding-top: 0.9rem; padding-bottom: 0.9rem; }
.tc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(148px, 1fr));
  gap: 0.75rem;
  padding: 1rem;
  overflow: auto;
  flex: 1;
}
.tc-card {
  aspect-ratio: 1 / 1;
  border: 1px solid var(--tc-line);
  border-radius: 12px;
  background:
    linear-gradient(155deg, #ffffff 0%, #f4f7fb 100%);
  padding: 0.75rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  text-align: left;
  cursor: pointer;
  transition: border-color .15s, box-shadow .15s, transform .12s;
  color: inherit;
}
.tc-card:hover {
  border-color: var(--tc-accent);
  box-shadow: 0 0 0 3px var(--tc-accent-soft);
  transform: translateY(-1px);
}
.tc-card.active {
  border-color: var(--tc-accent);
  background: linear-gradient(160deg, #fff 0%, #eef3ff 100%);
  box-shadow: 0 0 0 3px var(--tc-accent-soft);
}
.tc-card-id {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--tc-accent);
  letter-spacing: 0.02em;
}
.tc-card-title {
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: -0.015em;
  line-height: 1.3;
  color: var(--tc-ink);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
  margin: 0.35rem 0;
}
.tc-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.35rem;
  font-size: 0.65rem;
  color: var(--tc-faint);
}
.tc-card-meta .dot-ki,
.tc-card-meta .dot-clean {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 1.35rem;
  height: 1.15rem;
  padding: 0 0.3rem;
  border-radius: 999px;
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}
.tc-card-meta .dot-ki { background: var(--tc-warn-soft); color: var(--tc-warn); }
.tc-card-meta .dot-clean { background: var(--tc-accent-soft); color: var(--tc-accent); }
.tc-detail-pane { padding: 1.15rem 1.25rem; overflow: auto; }
.tc-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 280px;
  text-align: center;
  padding: 2rem;
}
.seg {
  display: inline-flex;
  padding: 0.2rem;
  background: var(--tc-line-soft);
  border-radius: 999px;
  gap: 0.15rem;
}
.seg-btn {
  border: 0;
  background: transparent;
  color: var(--tc-muted);
  padding: 0.4rem 0.85rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 550;
  cursor: pointer;
  transition: background .15s, color .15s;
}
.seg-btn:hover { color: var(--tc-ink); }
.seg-btn.active {
  background: var(--tc-surface);
  color: var(--tc-ink);
  box-shadow: var(--tc-shadow);
}
.sys-header h1 {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--tc-ink);
}
.sys-header p { color: var(--tc-muted); font-size: 0.95rem; margin-top: 0.25rem; }

.sys-tabs, .bereich-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  padding: 0.25rem;
  background: var(--tc-line-soft);
  border-radius: 999px;
  width: fit-content;
}
.sys-tab, .bereich-tab {
  border: 0;
  background: transparent;
  color: var(--tc-muted);
  padding: 0.5rem 1rem;
  border-radius: 999px;
  font-size: 0.875rem;
  font-weight: 550;
  cursor: pointer;
  transition: background .15s, color .15s;
}
.sys-tab:hover, .bereich-tab:hover { color: var(--tc-ink); }
.sys-tab.active, .bereich-tab.active {
  background: var(--tc-surface);
  color: var(--tc-ink);
  box-shadow: var(--tc-shadow);
}

.ablauf-list { display: grid; gap: 0.75rem; }
.ablauf-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.15rem;
  background: var(--tc-surface);
  border: 1px solid var(--tc-line);
  border-radius: var(--tc-radius);
  transition: border-color .15s, box-shadow .15s;
}
.ablauf-row:hover {
  border-color: #d0d5dd;
  box-shadow: var(--tc-shadow);
}
.ablauf-row .title { font-weight: 600; letter-spacing: -0.02em; }
.ablauf-row .meta { font-size: 0.8rem; color: var(--tc-muted); margin-top: 0.15rem; }
.ablauf-row .actions { margin-left: auto; display: flex; gap: 0.4rem; flex-wrap: wrap; }

.builder {
  display: grid;
  grid-template-columns: minmax(220px, 280px) 1fr;
  gap: 1.25rem;
  min-height: 60vh;
}
@media (max-width: 900px) {
  .builder { grid-template-columns: 1fr; }
}

.builder-pane {
  background: var(--tc-surface);
  border: 1px solid var(--tc-line);
  border-radius: var(--tc-radius);
  display: flex;
  flex-direction: column;
  min-height: 420px;
  overflow: hidden;
}
.builder-pane-head {
  padding: 0.9rem 1rem;
  border-bottom: 1px solid var(--tc-line-soft);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}
.builder-pane-head h3 {
  font-size: 0.8rem;
  font-weight: 650;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--tc-faint);
}
.builder-pane-body {
  padding: 1rem;
  overflow: auto;
  flex: 1;
}

.case-pool {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.65rem;
}

.case-tile {
  aspect-ratio: 16 / 9;
  width: 100%;
  border-radius: 10px;
  border: 1px solid var(--tc-line);
  background:
    linear-gradient(145deg, #fafbfc 0%, #f0f3f7 100%);
  padding: 0.65rem 0.75rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  cursor: grab;
  user-select: none;
  transition: border-color .15s, box-shadow .15s, transform .1s;
  position: relative;
}
.case-tile:hover {
  border-color: var(--tc-accent);
  box-shadow: 0 0 0 3px var(--tc-accent-soft);
}
.case-tile:active { cursor: grabbing; }
.case-tile.dragging { opacity: 0.45; }
.case-tile .tid {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--tc-accent);
  letter-spacing: 0.02em;
}
.case-tile .ttitle {
  font-size: 0.78rem;
  font-weight: 550;
  color: var(--tc-ink);
  line-height: 1.25;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.case-tile .tmeta {
  font-size: 0.65rem;
  color: var(--tc-faint);
}

.flow-canvas {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 0;
  min-height: 100%;
}
.flow-canvas.empty {
  align-items: center;
  justify-content: center;
  color: var(--tc-faint);
  font-size: 0.9rem;
  border: 1.5px dashed var(--tc-line);
  border-radius: var(--tc-radius);
  min-height: 280px;
  background: repeating-linear-gradient(
    -45deg,
    transparent,
    transparent 8px,
    rgba(0,0,0,0.015) 8px,
    rgba(0,0,0,0.015) 16px
  );
}
.flow-step {
  display: flex;
  flex-direction: column;
  align-items: center;
}
.flow-step .case-tile {
  max-width: 220px;
  width: 100%;
  background: linear-gradient(160deg, #fff 0%, #f5f8ff 100%);
  border-color: #c7d7ff;
}
.flow-step .case-tile .rm {
  position: absolute;
  top: 0.35rem;
  right: 0.35rem;
  width: 1.4rem;
  height: 1.4rem;
  border-radius: 999px;
  border: 0;
  background: rgba(15,20,25,0.06);
  color: var(--tc-muted);
  font-size: 0.7rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}
.flow-step .case-tile .rm:hover { background: var(--tc-danger-soft); color: var(--tc-danger); }
.flow-connector {
  width: 2px;
  height: 28px;
  background: linear-gradient(to bottom, #c7d7ff, var(--tc-accent));
  position: relative;
}
.flow-connector::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-top: 6px solid var(--tc-accent);
}
.flow-drop-active {
  outline: 2px dashed var(--tc-accent);
  outline-offset: -4px;
  background: var(--tc-accent-soft) !important;
}

.builder-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: end;
  margin-bottom: 1rem;
  padding: 1rem;
  background: var(--tc-surface);
  border: 1px solid var(--tc-line);
  border-radius: var(--tc-radius);
}
.builder-toolbar .field { flex: 1; min-width: 10rem; }
.builder-toolbar label {
  display: block;
  font-size: 0.7rem;
  font-weight: 650;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--tc-faint);
  margin-bottom: 0.35rem;
}

/* Markdown (unchanged structure) */
.preview-markdown {
  margin: 0;
  padding: 0.25rem 0.15rem 0.5rem;
  max-height: min(60vh, 640px);
  overflow: auto;
  text-align: left;
  font-size: 14px;
  line-height: 1.65;
  color: var(--tc-md-text);
  word-break: break-word;
}
.preview-markdown > *:first-child { margin-top: 0; }
.preview-markdown > *:last-child { margin-bottom: 0; }
.preview-markdown h1,
.preview-markdown h2,
.preview-markdown h3,
.preview-markdown h4 {
  margin: 1.25em 0 0.45em;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.3;
}
.preview-markdown h1 { font-size: 1.45em; }
.preview-markdown h2 {
  font-size: 1.2em;
  padding-bottom: 0.25em;
  border-bottom: 1px solid var(--tc-md-border);
}
.preview-markdown h3 { font-size: 1.05em; }
.preview-markdown h4 { font-size: 0.95em; color: var(--tc-md-text-soft); }
.preview-markdown p,
.preview-markdown ul,
.preview-markdown ol,
.preview-markdown blockquote,
.preview-markdown pre,
.preview-markdown table { margin: 0.7em 0; }
.preview-markdown ul,
.preview-markdown ol { padding-left: 1.4em; }
.preview-markdown a {
  color: var(--tc-md-primary);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.preview-markdown code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.88em;
  background: var(--tc-md-bg-hover);
  border: 1px solid var(--tc-md-border-soft);
  border-radius: 4px;
  padding: 0.1em 0.35em;
}
.preview-markdown pre {
  padding: 0.75rem 0.9rem;
  background: var(--tc-md-bg-hover);
  border: 1px solid var(--tc-md-border-soft);
  border-radius: 8px;
  overflow: auto;
}
.preview-markdown pre code { background: none; border: none; padding: 0; font-size: 12.5px; }
.preview-markdown table { width: 100%; border-collapse: collapse; font-size: 13px; display: block; overflow-x: auto; }
.preview-markdown th,
.preview-markdown td { border: 1px solid var(--tc-md-border); padding: 0.4em 0.65em; text-align: left; }
.preview-markdown th { background: var(--tc-md-bg-hover); font-weight: 600; }
.preview-markdown img { max-width: 100%; height: auto; border-radius: 6px; }

.md-editor {
  width: 100%;
  min-height: 22rem;
  max-height: min(50vh, 520px);
  resize: vertical;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 13px;
  line-height: 1.55;
  padding: 0.85rem 1rem;
  border: 1px solid var(--tc-line);
  border-radius: var(--tc-radius-sm);
  background: #fafafa;
}
.md-editor:focus {
  outline: none;
  border-color: var(--tc-accent);
  box-shadow: 0 0 0 3px var(--tc-accent-soft);
  background: #fff;
}
.md-save-status { font-size: 0.75rem; color: var(--tc-muted); display: inline-flex; align-items: center; gap: 0.35rem; }
.md-save-status.saving { color: var(--tc-accent); }
.md-save-status.saved { color: var(--tc-ok); }
.md-save-status.error { color: var(--tc-danger); }
.md-mode-btn.active { background: var(--tc-accent-soft); color: var(--tc-accent); }
.ki-help { cursor: help; border-bottom: 1px dotted var(--tc-faint); }

.btn-sm {
  padding: 0.4rem 0.75rem;
  font-size: 0.8rem;
}

.flag-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border: 1px solid var(--tc-line);
  background: var(--tc-surface);
  border-radius: 999px;
  padding: 0.3rem 0.7rem 0.3rem 0.35rem;
  cursor: pointer;
  font-size: 0.78rem;
  font-weight: 550;
  color: var(--tc-muted);
  transition: border-color .15s, background .15s, color .15s;
}
.flag-toggle:hover { border-color: #d0d5dd; color: var(--tc-ink); }
.flag-track {
  width: 2rem;
  height: 1.15rem;
  border-radius: 999px;
  background: #d0d5dd;
  position: relative;
  transition: background .15s;
  flex-shrink: 0;
}
.flag-knob {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 0.85rem;
  height: 0.85rem;
  border-radius: 999px;
  background: #fff;
  box-shadow: 0 1px 2px rgba(0,0,0,.15);
  transition: transform .15s;
}
.flag-toggle.on {
  border-color: transparent;
  color: var(--tc-ink);
}
.flag-toggle.on#tc-ki { background: var(--tc-warn-soft); }
.flag-toggle.on#tc-cleanup { background: var(--tc-accent-soft); }
.flag-toggle.on .flag-track { background: var(--tc-accent); }
.flag-toggle.on#tc-ki .flag-track { background: var(--tc-warn); }
.flag-toggle.on .flag-knob { transform: translateX(0.85rem); }

.tc-path {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  min-width: 0;
  flex: 1;
}
.tc-path-folder {
  font-size: 0.7rem;
  font-weight: 650;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--tc-faint);
}
.tc-path-file {
  font-size: 0.78rem;
  color: var(--tc-muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: min(28rem, 100%);
}

.tc-modal {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}
.tc-modal.hidden { display: none; }
.tc-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 20, 25, 0.35);
}
.tc-modal-panel {
  position: relative;
  width: min(28rem, 100%);
  padding: 1.25rem 1.35rem;
  box-shadow: 0 16px 48px rgba(15, 20, 25, 0.18);
}

.tc-card-flags {
  display: inline-flex;
  gap: 0.25rem;
  align-items: center;
}

.tc-filter-wrap {
  position: relative;
  padding: 0.65rem 1rem 0;
  flex-shrink: 0;
}
.tc-filter-icon {
  position: absolute;
  left: 1.7rem;
  top: 50%;
  transform: translateY(calc(-50% + 0.2rem));
  color: var(--tc-faint);
  font-size: 0.75rem;
  pointer-events: none;
}
.tc-filter-input {
  padding-left: 2.1rem !important;
  padding-right: 2.1rem !important;
  border-radius: 999px !important;
  background: var(--tc-bg) !important;
}
.tc-filter-clear {
  position: absolute;
  right: 1.45rem;
  top: 50%;
  transform: translateY(calc(-50% + 0.2rem));
  border: 0;
  background: transparent;
  color: var(--tc-faint);
  width: 1.5rem;
  height: 1.5rem;
  border-radius: 999px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.tc-filter-clear:hover { color: var(--tc-ink); background: var(--tc-line-soft); }

#loading {
  position: fixed; inset: 0;
  display: flex; align-items: center; justify-content: center;
  background: var(--tc-surface); z-index: 60;
}
.loader {
  width: 36px; height: 36px;
  border: 2.5px solid var(--tc-line);
  border-top-color: var(--tc-accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }