.tt-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem 1rem;
  align-items: end;
  margin-bottom: 0.85rem;
}

.tt-field {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}
.tt-field label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.tt-field select,
.tt-field input[type="text"] {
  font-family: var(--mono);
  font-size: 0.9rem;
  padding: 0.4rem 0.55rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  color: var(--ink);
  min-width: 4.5rem;
}
.tt-field input.var-name {
  width: 3.2rem;
  text-align: center;
}

.tt-var-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  align-items: center;
}

.tt-table-wrap {
  overflow: auto;
  max-height: min(70vh, 520px);
  border: 1px solid var(--line);
  border-radius: 8px;
}
.tt-table-wrap .tt-table {
  border: none;
}
.tt-table-wrap .tt-table thead th {
  position: sticky;
  top: 0;
  z-index: 1;
}

.tt-form-block pre {
  margin: 0;
  padding: 0.65rem 0.75rem;
  background: var(--term-bg);
  color: var(--term-fg);
  border-radius: 8px;
  font-family: var(--mono);
  font-size: 0.84rem;
  white-space: pre-wrap;
  word-break: break-word;
  min-height: 2.6rem;
  max-height: 14rem;
  overflow: auto;
}

.tt-hint.tt-warn {
  color: var(--warn);
  background: var(--warn-bg);
  padding: 0.4rem 0.55rem;
  border-radius: 6px;
  margin: 0 0 0.65rem;
}

.tt-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--mono);
  font-size: 0.88rem;
}
.tt-table th,
.tt-table td {
  border: 1px solid var(--line);
  padding: 0.4rem 0.55rem;
  text-align: center;
}
.tt-table th {
  background: var(--surface2);
  font-weight: 600;
  font-size: 0.8rem;
}
.tt-table td.row-idx {
  color: var(--muted);
  font-size: 0.75rem;
  background: rgba(255, 255, 255, 0.35);
}
.tt-table .out-btn {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 0.95rem;
  min-width: 2.4rem;
  padding: 0.25rem 0.45rem;
  border-radius: 6px;
  border: 1px solid var(--line);
  cursor: pointer;
  background: var(--surface);
  color: var(--ink);
}
.tt-table .out-btn.v1 {
  background: var(--ok-bg);
  color: var(--ok);
  border-color: #b7dfc6;
}
.tt-table .out-btn.v0 {
  background: var(--err-bg);
  color: var(--err);
  border-color: #e8c4c4;
}
.tt-table .out-btn.vx {
  background: var(--warn-bg);
  color: var(--warn);
  border-color: #e6d7a8;
}
.tt-table .out-btn:hover {
  border-color: var(--accent);
}

.tt-forms {
  display: grid;
  gap: 0.75rem;
}
.tt-form-block label {
  display: block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.3rem;
}

.tt-expr-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  align-items: center;
}
.tt-expr-row input {
  flex: 1 1 12rem;
  font-family: var(--mono);
  font-size: 0.9rem;
  padding: 0.45rem 0.6rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}
.tt-hint {
  margin: 0.5rem 0 0;
  font-size: 0.85rem;
  color: var(--muted);
}
.tt-hint code {
  font-family: var(--mono);
  font-size: 0.82rem;
}

.tt-chal-pick {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem 0.75rem;
  align-items: center;
  margin: 0 0 0.65rem;
}
.tt-chal-pick label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.tt-chal-pick select {
  font-family: var(--sans);
  font-size: 0.92rem;
  padding: 0.4rem 0.6rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  color: var(--ink);
  min-width: min(100%, 18rem);
}
.tt-toggles {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem 1.25rem;
  margin-top: 0.65rem;
}
.tt-check {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.88rem;
  color: var(--muted);
  cursor: pointer;
}
.tt-check input {
  accent-color: var(--accent);
}

.tt-file-btn {
  cursor: pointer;
  margin: 0;
}

@media print {
  .site-header,
  .skip-link,
  .site-footer,
  .challenge,
  .tt-export,
  .tt-toggles,
  .tool-actions,
  .tt-controls .tool-actions,
  .hero .lead {
    display: none !important;
  }
  body {
    background: #fff !important;
  }
  .tt-table-wrap {
    max-height: none !important;
    overflow: visible !important;
    border: none !important;
  }
  .tt-form-block pre {
    max-height: none !important;
    color: #000 !important;
    background: #f5f5f5 !important;
  }
  .panel {
    break-inside: avoid;
    box-shadow: none !important;
  }
  .out-btn {
    border: 1px solid #333 !important;
  }
}