.session-tools { margin-top: 12px; }
.session-tools-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 12px; }
.tool-card { border: 1px solid #292e34; background: rgba(10, 12, 14, .5); border-radius: 14px; padding: 15px; }
.tool-card h3 { margin: 0 0 12px; font-size: 15px; }
.tool-row { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.tool-row button, .tool-row select { min-height: 40px; padding: 0 12px; }
.tool-meta { display: flex; justify-content: space-between; gap: 12px; margin-top: 11px; color: #7f8993; font-size: 11px; }
.tool-meta code { color: #c5cbd1; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
.ab-selectors { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-bottom: 8px; }
.ab-selectors label { display: grid; gap: 5px; color: #89929c; font-size: 11px; }
.ab-selectors select { width: 100%; }
.ab-buttons { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.ab-buttons button[aria-pressed="true"] { background: #e7e7e2; color: #111214; border-color: #e7e7e2; }
#ab-status { margin: 10px 0 0; color: #8c959f; font-size: 11px; text-transform: capitalize; }
.diagnostics-card { grid-column: 1 / -1; }
.diagnostics-card details { margin-top: 10px; }
.diagnostics-card summary { cursor: pointer; color: #bfc5cb; font-size: 12px; }
#diagnostics-json { max-height: 280px; overflow: auto; margin: 10px 0 0; padding: 12px; border: 1px solid #262b30; border-radius: 10px; background: #090b0d; color: #aeb7c0; font: 11px/1.5 ui-monospace, SFMono-Regular, Menlo, monospace; white-space: pre-wrap; overflow-wrap: anywhere; }
#state-file { display: none; }
@media (max-width: 720px) {
  .session-tools-grid { grid-template-columns: 1fr; }
  .diagnostics-card { grid-column: auto; }
}
@media (max-width: 480px) {
  .tool-row button { flex: 1 1 120px; min-height: 44px; }
  .ab-buttons button { min-height: 44px; }
  .tool-meta { flex-direction: column; gap: 4px; }
}
@media (orientation: landscape) and (max-height: 620px) {
  .shell { padding-top: 8px; }
  .hero { padding-top: 10px; padding-bottom: 14px; }
  .hero h1 { font-size: clamp(38px, 8vh, 54px); }
  .subtitle { margin-top: 8px; }
  .piano { height: 140px; }
  .panel { padding-top: 16px; padding-bottom: 16px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: 0s !important; animation-duration: 0s !important; }
}