/* =========================================================
   TextBases Tool Form Components V1
   Shared form/input/output system for browser-based tools.
   ========================================================= */

.tb-tool-shell {
  display: grid;
  gap: 18px;
  margin-top: 18px;
}

.tb-tool-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  align-items: stretch;
}

.tb-panel {
  display: grid;
  grid-template-rows: auto minmax(320px, 1fr) auto;
  padding: 16px;
  gap: 12px;
}

.tb-panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.tb-panel-title {
  margin: 0;
  font-size: 1rem;
  letter-spacing: -0.02em;
}

.tb-panel-hint {
  color: var(--tb-muted);
  font-size: 0.86rem;
}

.tb-textarea,
.tb-input,
.tb-select {
  width: 100%;
  min-width: 0;
  border: 1px solid var(--tb-border);
  border-radius: var(--tb-radius-lg);
  background: rgba(2, 6, 23, 0.58);
  color: var(--tb-text);
  font: 500 0.98rem/1.65 var(--tb-font-main);
  outline: none;
}

.tb-textarea {
  min-height: 320px;
  padding: 16px;
  resize: vertical;
}

.tb-input,
.tb-select {
  min-height: var(--tb-control-height);
  padding: 0 14px;
}

.tb-textarea:focus,
.tb-input:focus,
.tb-select:focus {
  border-color: var(--tb-accent-border);
  box-shadow: 0 0 0 4px rgba(56, 189, 248, 0.10);
}

@media (max-width: 900px) {
  .tb-tool-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .tb-panel {
    grid-template-rows: auto minmax(260px, auto) auto;
  }

  .tb-textarea {
    min-height: 260px;
  }
}