:host {
  display: block;
  height: 100vh;
  height: 100svh;
  min-height: 100vh;
  min-height: 100svh;
  overflow: hidden;
}

.shell {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  height: 100vh;
  height: 100svh;
  min-height: 100vh;
  min-height: 100svh;
  overflow: hidden;
}

.toolbar {
  align-items: center;
  background: var(--calc-surface);
  border-bottom: 1px solid var(--calc-border);
  display: flex;
  gap: 16px;
  justify-content: space-between;
  padding: 12px 18px;
}

h1,
p {
  margin: 0;
}

.brand {
  align-items: center;
  display: flex;
  gap: 11px;
  min-width: 0;
}

.brand-logo {
  flex: 0 0 auto;
  height: 42px;
  width: 42px;
}

h1 {
  color: var(--calc-heading);
  font-size: 1.15rem;
  font-weight: 750;
}

p {
  color: var(--calc-text-muted);
  font-size: 0.86rem;
}

.toggle {
  align-items: center;
  background: var(--calc-control);
  border: 1px solid var(--calc-border-strong);
  border-radius: 7px;
  color: var(--calc-control-text);
  cursor: pointer;
  display: inline-flex;
  font-size: 1.05rem;
  height: 38px;
  justify-content: center;
  width: 42px;
}

.toggle[aria-pressed='true'] {
  background: var(--calc-control-active);
  border-color: var(--calc-border);
  color: var(--calc-control-muted-text);
}

.toolbar-actions {
  align-items: center;
  display: flex;
  gap: 10px;
}

.language-select {
  align-items: center;
  color: var(--calc-control-muted-text);
  display: flex;
  font-size: 0.82rem;
  gap: 7px;
}

.language-select select {
  background: var(--calc-surface);
  border: 1px solid var(--calc-border);
  border-radius: 7px;
  color: var(--calc-text);
  font: inherit;
  height: 34px;
  padding: 0 28px 0 10px;
}

.workspace {
  display: grid;
  grid-template-columns: minmax(0, 1fr) clamp(280px, 34vw, 420px);
  min-height: 0;
}

.workspace[data-panel='closed'] {
  grid-template-columns: minmax(0, 1fr) 0;
}

.prompt-area {
  min-height: 0;
  min-width: 0;
  overflow: auto;
  padding: 18px;
}

.keypad-panel {
  min-width: 0;
  overflow: hidden;
  transition:
    max-height 160ms ease,
    width 160ms ease;
}

.workspace[data-panel='closed'] .keypad-panel {
  visibility: hidden;
}

@media (orientation: portrait) {
  .workspace {
    grid-template-columns: minmax(0, 1fr);
    grid-template-rows: minmax(0, 1fr) max-content;
  }

  .keypad-panel {
    align-self: end;
    border-top: 1px solid var(--calc-border);
    max-height: none;
    overflow: visible;
  }

  .workspace[data-panel='closed'] {
    grid-template-rows: minmax(0, 1fr) 0;
  }
}

@media (orientation: landscape) {
  .keypad-panel {
    border-left: 1px solid var(--calc-border);
  }
}

@media (max-width: 640px) {
  .toolbar {
    padding: 9px 12px;
  }

  .brand {
    gap: 8px;
  }

  .brand-logo {
    height: 34px;
    width: 34px;
  }

  h1 {
    font-size: 1rem;
  }

  p {
    font-size: 0.78rem;
  }

  .prompt-area {
    padding: 10px;
  }

  .toolbar-actions {
    gap: 6px;
  }

  .language-select span {
    display: none;
  }

  .language-select select {
    height: 32px;
    max-width: 112px;
    padding-left: 8px;
  }
}