.bh-tool-shell,
.bh-tool-shell * { box-sizing: border-box; }

.bh-tool-shell {
  position: sticky;
  top: 0;
  z-index: 2147483000;
  display: grid;
  grid-template-columns: minmax(190px, .78fr) minmax(220px, 1fr) auto;
  align-items: center;
  gap: 16px;
  min-height: 62px;
  padding: 9px 18px;
  border-bottom: 1px solid var(--bh-color-border);
  background: color-mix(in srgb, var(--bh-color-canvas) 96%, transparent);
  color: var(--bh-color-text);
  font-family: var(--bh-font-ui);
  letter-spacing: 0;
  box-shadow: 0 8px 24px rgb(15 43 70 / .07);
  backdrop-filter: blur(14px);
}

.bh-tool-brand,
.bh-tool-nav,
.bh-tool-actions,
.bh-tool-switcher,
.bh-instrument-selector { display: inline-flex; align-items: center; }

/* App form labels may be vertical; shell controls keep their own row layout. */
.bh-tool-shell .bh-instrument-selector,
.bh-tool-shell .bh-tool-switcher { flex-direction: row; }

.bh-tool-brand { gap: 10px; min-width: 0; color: inherit; text-decoration: none; }
.bh-tool-brand-mark { display: inline-grid; width: 36px; height: 36px; flex: 0 0 auto; place-items: center; border-radius: 10px; background: var(--bh-color-heading); color: #fff; font-size: .75rem; font-weight: 900; letter-spacing: .04em; }
.bh-tool-brand-text { display: grid; min-width: 0; gap: 2px; line-height: 1.05; }
.bh-tool-brand-text strong { overflow: hidden; color: var(--bh-color-heading); font: 600 1rem/1.05 var(--bh-font-display); text-overflow: ellipsis; white-space: nowrap; }
.bh-tool-brand-text span { overflow: hidden; color: var(--bh-color-muted); font-size: .68rem; font-weight: 650; text-overflow: ellipsis; white-space: nowrap; }

.bh-tool-current { display: flex; min-width: 0; align-items: center; justify-content: center; gap: 8px; }
.bh-tool-switcher { width: min(100%, 290px); gap: 8px; min-width: 0; }
.bh-tool-switcher > span { flex: 0 0 auto; color: var(--bh-color-muted); font-size: .66rem; font-weight: 900; letter-spacing: .11em; text-transform: uppercase; }
.bh-tool-switcher select { width: 100%; min-width: 0; min-height: 38px; padding: 0 34px 0 12px; border: 1px solid var(--bh-color-border); border-radius: var(--bh-radius-md); background: var(--bh-color-panel); color: var(--bh-color-heading); font: 800 .82rem/1 var(--bh-font-ui); box-shadow: var(--bh-shadow-1); }
.bh-tool-status { flex: 0 0 auto; padding: 3px 7px; border: 1px solid #a46a29; border-radius: 999px; background: #fff3de; color: #754414; font-size: .58rem; font-weight: 900; letter-spacing: .06em; text-transform: uppercase; white-space: nowrap; }

.bh-tool-actions { min-width: 0; justify-content: flex-end; gap: 10px; }
.bh-instrument-selector { flex: 0 0 auto; gap: 6px; min-height: 38px; padding: 3px 8px; border: 1px solid var(--bh-color-border); border-radius: var(--bh-radius-md); background: var(--bh-color-panel); cursor: pointer; }
.bh-instrument-label { color: var(--bh-color-muted); font-size: .7rem; font-weight: 750; transition: color var(--bh-transition); }
.bh-instrument-label.is-active { color: var(--bh-color-heading); font-weight: 900; }
.bh-tool-shell .bh-instrument-slider { appearance: none; -webkit-appearance: none; width: 38px; min-width: 38px; height: 20px; min-height: 0; margin: 0; padding: 3px; border: 1px solid #9aaabd; border-radius: 999px; background: var(--bh-color-selection); cursor: pointer; box-shadow: none; }
.bh-tool-shell .bh-instrument-slider::-webkit-slider-thumb { appearance: none; -webkit-appearance: none; width: 14px; height: 14px; border: 0; border-radius: 50%; background: var(--bh-color-heading); }
.bh-tool-shell .bh-instrument-slider::-moz-range-thumb { width: 14px; height: 14px; border: 0; border-radius: 50%; background: var(--bh-color-heading); }
.bh-instrument-slider:focus-visible { outline: 2px solid var(--bh-color-focus); outline-offset: 3px; }

.bh-tool-nav { min-width: 0; justify-content: flex-end; gap: 2px; }
.bh-tool-nav a { display: inline-flex; min-height: 36px; align-items: center; padding: 0 9px; border-radius: 8px; color: var(--bh-color-muted); font-size: .76rem; font-weight: 800; text-decoration: none; white-space: nowrap; }
.bh-tool-nav a:hover,
.bh-tool-nav a:focus-visible,
.bh-tool-switcher select:focus-visible { background: var(--bh-color-selection); color: var(--bh-color-heading); outline: 2px solid var(--bh-color-focus); }

.bh-tool-nav .bh-auth-slot { position: relative; display: inline-flex; align-items: center; }
.bh-tool-nav .bh-auth-link { border: 1px solid var(--bh-color-border); background: var(--bh-color-panel); color: var(--bh-color-heading); }
.bh-tool-nav .bh-auth-menu { position: relative; }
.bh-tool-nav .bh-auth-menu > summary { display: inline-flex; min-height: 36px; align-items: center; gap: 5px; padding: 0 8px; border: 1px solid var(--bh-color-border); border-radius: 8px; background: var(--bh-color-panel); color: var(--bh-color-heading); cursor: pointer; list-style: none; }
.bh-tool-nav .bh-auth-menu > summary::-webkit-details-marker { display: none; }
.bh-tool-nav .bh-auth-avatar { display: inline-grid; width: 24px; height: 24px; place-items: center; border-radius: 50%; background: var(--bh-color-heading); color: #fff; font-size: .62rem; font-weight: 900; }
.bh-tool-nav .bh-auth-summary-label { max-width: 78px; overflow: hidden; font-size: .7rem; font-weight: 800; text-overflow: ellipsis; white-space: nowrap; }
.bh-tool-nav .bh-auth-chevron { color: var(--bh-color-muted); font-size: .62rem; }
.bh-tool-nav .bh-auth-popover { position: absolute; top: calc(100% + 8px); right: 0; z-index: 10; display: grid; width: min(260px, calc(100vw - 20px)); gap: 7px; padding: 11px; border: 1px solid var(--bh-color-border); border-radius: var(--bh-radius-md); background: var(--bh-color-panel); box-shadow: var(--bh-shadow-2); }
.bh-tool-nav .bh-auth-name { overflow: hidden; color: var(--bh-color-heading); font-size: .76rem; font-weight: 850; text-overflow: ellipsis; white-space: nowrap; }
.bh-tool-nav .bh-auth-email { overflow: hidden; color: var(--bh-color-muted); font-size: .68rem; text-overflow: ellipsis; white-space: nowrap; }
.bh-tool-nav .bh-auth-signout { min-height: 34px; border: 0; border-radius: 7px; background: var(--bh-color-selection); color: var(--bh-color-heading); font: 800 .74rem/1 var(--bh-font-ui); cursor: pointer; }
.bh-tool-nav .bh-auth-signout:disabled { cursor: wait; opacity: .68; }

.bh-missing-tool { width: min(720px, calc(100% - 32px)); margin: 60px auto; padding: 24px; border: 1px solid var(--bh-color-border); border-radius: var(--bh-radius-md); background: var(--bh-color-panel); color: var(--bh-color-text); font-family: var(--bh-font-ui); }
.bh-tool-practice-strip { display: none !important; }

@media (max-width: 1100px) {
  .bh-tool-shell { grid-template-columns: minmax(170px, 1fr) minmax(210px, 1fr); }
  .bh-tool-actions { grid-column: 1 / -1; justify-content: stretch; }
  .bh-tool-nav { margin-left: auto; }
}

@media (max-width: 640px) {
  .bh-tool-shell { grid-template-columns: auto minmax(0, 1fr); align-items: center; gap: 8px; padding: 9px 10px; }
  .bh-tool-current { justify-content: flex-start; }
  .bh-tool-switcher { width: 100%; max-width: none; }
  .bh-tool-switcher > span, .bh-tool-status { display: none; }
  .bh-tool-actions { display: grid; grid-template-columns: auto minmax(0, 1fr); align-items: center; gap: 8px; }
  .bh-tool-actions { grid-column: 1 / -1; }
  .bh-tool-nav { grid-column: 1 / -1; width: 100%; justify-content: flex-start; overflow-x: auto; padding-bottom: 2px; }
  .bh-tool-nav .bh-auth-slot { margin-left: auto; }
  .bh-tool-nav .bh-auth-summary-label { display: none; }
}

@media (max-width: 390px) {
  .bh-tool-brand-text span { display: none; }
  .bh-instrument-selector { width: 100%; justify-content: center; }
}

.bh-sound-button{font:inherit;color:inherit;background:transparent;border:1px solid currentColor;border-radius:6px;padding:6px 10px;cursor:pointer}
.bh-sound-dialog{color:var(--text-color,#eceef2);background:var(--panel-bg,#20242c);border:1px solid #69717e;border-radius:12px;padding:20px;width:min(420px,calc(100vw - 32px));max-height:85dvh;overflow:auto;box-sizing:border-box}
.bh-sound-dialog::backdrop{background:#0009}.bh-sound-dialog form{display:flex;justify-content:space-between;align-items:center}.bh-sound-dialog h2{margin:0}.bh-sound-dialog fieldset{margin:16px 0;padding:12px;border:1px solid #737b88;border-radius:6px}.bh-sound-dialog fieldset:disabled{opacity:.45}.bh-sound-dialog label{display:flex;gap:12px;align-items:center;justify-content:space-between;margin:8px 0}.bh-sound-dialog select{max-width:70%;font:inherit}.bh-sound-dialog input[type=range]{min-width:0;flex:1}.bh-sound-dialog output{min-width:3ch}.bh-sound-follow{justify-content:flex-start!important}.bh-sound-error{color:#ffb7b7}

dialog.bh-sound-dialog{position:fixed;inset:0;margin:auto;height:fit-content} .bh-sound-close{font:inherit;padding:6px 12px;border:1px solid #778190;border-radius:6px;background:#313846;color:#fff;cursor:pointer}