/* ── Routing Module CSS ────────────────────────────────────────────────────── */

#routing-content {
  max-width: 900px;
  margin: 0 auto;
  padding: 1.5rem;
}

#routing-empty-state {
  text-align: center;
  margin-top: 3rem;
  color: var(--sub);
}

#routing-empty-state h3 {
  color: var(--text);
  margin-bottom: 0.5rem;
}

/* ── Difficulty Buttons ────────────────────────────────────────────────────── */
.routing-difficulty {
  display: flex;
  gap: 8px;
  justify-content: center;
  align-items: center;
  margin-top: 16px;
}

.routing-diff-btn {
  min-height: 44px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r2, 6px);
  color: var(--text);
  font-size: 0.85rem;
  padding: 0 20px;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s, color 0.2s;
}

.routing-diff-btn.active[data-diff="leicht"] {
  border-color: #3ddc97;
  background: rgba(61, 220, 151, 0.1);
  color: #3ddc97;
}

.routing-diff-btn.active[data-diff="mittel"] {
  border-color: #f7c36a;
  background: rgba(247, 195, 106, 0.1);
  color: #f7c36a;
}

.routing-diff-btn.active[data-diff="schwer"] {
  border-color: #ff5c6a;
  background: rgba(255, 92, 106, 0.1);
  color: #ff5c6a;
}

/* ── Connected Toggle ─────────────────────────────────────────────────────── */
.routing-toggle-label {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 12px;
  justify-content: center;
  font-size: 0.82rem;
  color: var(--sub);
  cursor: pointer;
}
.routing-toggle-label input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--accent);
  cursor: pointer;
}

/* ── D2 Topology Container ────────────────────────────────────────────────── */
.routing-d2-container {
  background: var(--surface);
  border-radius: var(--r, 12px);
  padding: 16px;
  border: 1px solid var(--border);
  margin-top: 16px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.routing-d2-container svg {
  min-height: 450px;
  height: auto;
  display: block;
}

.routing-d2-loading,
.routing-d2-error {
  text-align: center;
  color: var(--sub);
  padding: 2rem;
  font-size: 0.9rem;
}

/* ── Router Tabs ──────────────────────────────────────────────────────────── */
.routing-tabs {
  display: flex;
  gap: 8px;
  border-bottom: 1px solid var(--border);
  margin-top: 16px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.routing-tab {
  height: 44px;
  padding: 0 16px;
  color: var(--sub);
  background: transparent;
  border: none;
  cursor: pointer;
  position: relative;
  font-size: 0.85rem;
  font-weight: 400;
  font-family: 'DM Sans', sans-serif;
  display: flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}

.routing-tab.active {
  color: var(--accent);
  font-weight: 700;
}

.routing-tab.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--accent);
}

.routing-tab .tab-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
  background: var(--border);
}

.routing-tab .tab-dot.complete {
  background: var(--green, #3ddc97);
}

/* ── Routing Table ────────────────────────────────────────────────────────── */
.routing-table-wrap {
  margin-top: 16px;
  overflow-x: auto;
}

.routing-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
}

.routing-table th {
  font-family: 'Space Mono', monospace;
  font-size: 0.62rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 700;
  color: var(--sub);
  padding: 8px;
  text-align: left;
}

.routing-table td {
  padding: 4px;
}

.routing-table input {
  width: 100%;
  height: 40px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r2, 6px);
  font-family: 'Space Mono', monospace;
  font-size: 0.85rem;
  color: var(--text);
  padding: 0 8px;
  box-sizing: border-box;
}

.routing-table input:focus {
  border-color: var(--accent);
  outline: none;
}

.routing-table input.correct {
  border-color: #3ddc97;
  background: #0d2e1e;
  pointer-events: none;
}

.routing-table input.wrong {
  border-color: #ff5c6a;
  background: #2e0d12;
}

.routing-table input.solved {
  border-color: var(--sub);
  background: transparent;
  color: var(--sub);
  pointer-events: none;
}

/* ── Feedback Row States ──────────────────────────────────────────────────── */
.routing-row-extra td {
  background: #2e0d12;
}

.routing-row-extra input {
  border-color: #ff5c6a;
  background: #2e0d12;
  pointer-events: none;
}

.routing-row-missing td {
  background: rgba(247, 195, 106, 0.08);
}

.routing-row-missing input {
  border-color: #f7c36a;
  color: #f7c36a;
  pointer-events: none;
}

.routing-extra-label {
  font-size: 0.75rem;
  color: var(--red, #ff5c6a);
  margin-left: 8px;
}

.routing-missing-label {
  font-size: 0.75rem;
  color: #f7c36a;
}

/* ── Row Controls ─────────────────────────────────────────────────────────── */
.routing-delete-btn {
  width: 32px;
  height: 40px;
  color: var(--sub);
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1.2rem;
  padding: 0;
}

.routing-delete-btn:hover {
  color: var(--red, #ff5c6a);
}

.routing-add-row {
  width: 100%;
  height: 40px;
  background: var(--border);
  color: var(--sub);
  border: 1px dashed var(--border);
  border-radius: var(--r2, 6px);
  cursor: pointer;
  font-size: 0.85rem;
  margin-top: 8px;
}

/* ── Action Bar ───────────────────────────────────────────────────────────── */
.routing-action-bar {
  padding: 16px 0;
}

/* ── Responsive ───────────────────────────────────────────────────────────── */
@media (max-width: 480px) {
  .routing-table input {
    font-size: 0.78rem;
  }
  .routing-tabs {
    padding-bottom: 4px;
  }
}

@media (max-width: 360px) {
  .routing-difficulty {
    flex-direction: column;
  }
}