/* Hallmark · component: components.css (Button, Switch, Modal, CopyField, Banner, Toast, EmptyState, AudioMeter)
 * states: default·hover·focus·active·disabled·loading·error·success · theme: tuned custom (dark-first warm-coral)
 */

/* ---------- Button (primary / secondary / icon) ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2xs);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  line-height: 1;
  border-radius: 999px;
  padding: 0.7em 1.4em;
  border: 1px solid var(--color-rule);
  background: var(--color-paper-2);
  color: var(--color-ink);
  cursor: pointer;
  text-align: center;
  text-decoration: none;
  transition: background var(--dur-fast) var(--ease-out),
    border-color var(--dur-fast) var(--ease-out),
    transform var(--dur-fast) var(--ease-out);
}
.btn:hover, .btn.is-hover { background: oklch(from var(--color-paper-2) l calc(c + 0.01) h); border-color: var(--color-accent); }
.btn:focus-visible, .btn.is-focus { outline: 2px solid var(--color-focus); outline-offset: 2px; }
.btn:active, .btn.is-active { transform: translateY(1px); }
.btn:disabled, .btn[aria-disabled="true"], .btn.is-disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}
.btn[data-state="loading"], .btn.is-loading { color: transparent; position: relative; }
.btn[data-state="loading"]::after, .btn.is-loading::after {
  content: "";
  position: absolute;
  width: 1em;
  height: 1em;
  border: 2px solid var(--color-rule);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
.btn[data-state="error"], .btn.is-error { border-color: var(--color-danger); color: var(--color-danger); }
.btn[data-state="success"], .btn.is-success { border-color: var(--color-success); color: var(--color-success); }

.btn--primary { background: var(--color-paper-2); border-color: var(--color-accent); color: var(--color-accent); }
.btn--danger { border-color: var(--color-danger); color: var(--color-danger); }
.btn--danger:hover, .btn--danger.is-hover { border-color: var(--color-danger); background: oklch(from var(--color-paper-2) l c h / 0.6); }
.btn--secondary { background: transparent; }
.btn--icon { padding: 0.6em; border-radius: 50%; }

@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- Switch ---------- */
.switch {
  --sw: 2.75rem;
  --sw-h: 1.5rem;
  position: relative;
  display: inline-flex;
  width: var(--sw);
  height: var(--sw-h);
  border-radius: 999px;
  background: var(--color-rule);
  border: 1px solid var(--color-rule);
  cursor: pointer;
  transition: background var(--dur-base) var(--ease-out), border-color var(--dur-base) var(--ease-out);
}
.switch::after {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: calc(var(--sw-h) - 6px);
  height: calc(var(--sw-h) - 6px);
  border-radius: 50%;
  background: var(--color-ink);
  transition: transform var(--dur-base) var(--ease-out);
}
.switch:hover, .switch.is-hover { border-color: var(--color-accent); }
.switch:focus-visible, .switch.is-focus { outline: 2px solid var(--color-focus); outline-offset: 2px; }
.switch:active, .switch.is-active { transform: scale(0.98); }
.switch[aria-checked="true"], .switch.is-checked { background: var(--color-accent); border-color: var(--color-accent); }
.switch[aria-checked="true"]::after { transform: translateX(calc(var(--sw) - var(--sw-h))); }
.switch[data-state="error"] { border-color: var(--color-danger); }
.switch[data-state="loading"] { opacity: 0.6; pointer-events: none; }
.switch[data-state="success"] { border-color: var(--color-success); }
.switch:disabled, .switch.is-disabled { opacity: 0.5; cursor: not-allowed; pointer-events: none; }

/* ---------- Modal ---------- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: oklch(from var(--color-paper) l c h / 0.7);
  display: grid;
  place-items: center;
  z-index: var(--z-modal);
}
.modal {
  width: min(92vw, 30rem);
  background: var(--color-paper-2);
  border: 1px solid var(--color-rule);
  border-radius: 18px;
  padding: var(--space-lg);
  box-shadow: var(--shadow-modal);
}
.modal:focus-visible, .modal.is-focus { outline: 2px solid var(--color-focus); outline-offset: -2px; }

/* ---------- CopyField ---------- */
.copyfield {
  display: flex;
  gap: var(--space-2xs);
  width: 100%;
}
.copyfield__input {
  flex: 1;
  min-width: 0;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  padding: 0.65em 0.9em;
  border-radius: 10px;
  border: 1px solid var(--color-rule);
  background: var(--color-paper);
  color: var(--color-ink);
  text-overflow: ellipsis;
  white-space: nowrap;
  overflow: hidden;
}
.copyfield__input:hover { border-color: var(--color-neutral); }
.copyfield__input:focus-visible, .copyfield__input.is-focus { outline: 2px solid var(--color-focus); outline-offset: 2px; }
.copyfield__input:active, .copyfield__input.is-active { border-color: var(--color-accent); }
.copyfield__input:disabled, .copyfield.is-disabled { opacity: 0.5; cursor: not-allowed; }
.copyfield[data-state="loading"], .copyfield.is-loading { opacity: 0.6; pointer-events: none; }
.copyfield[data-state="success"] .copyfield__input, .copyfield.is-success .copyfield__input { border-color: var(--color-success); }
.copyfield[data-state="error"] .copyfield__input, .copyfield.is-error .copyfield__input { border-color: var(--color-danger); }

/* ---------- Banner ---------- */
.banner {
  display: flex;
  gap: var(--space-sm);
  align-items: flex-start;
  padding: var(--space-sm) var(--space-md);
  border-radius: 12px;
  border: 1px solid var(--color-rule);
  background: var(--color-paper-2);
  color: var(--color-ink);
  font-size: var(--text-sm);
  cursor: pointer;
}
.banner:hover, .banner.is-hover { background: oklch(from var(--color-paper-2) l calc(c + 0.01) h); }
.banner:focus-visible, .banner.is-focus { outline: 2px solid var(--color-focus); outline-offset: 2px; }
.banner[data-state="error"] { border-color: var(--color-danger); color: var(--color-danger); }
.banner[data-state="success"] { border-color: var(--color-success); color: var(--color-success); }
.banner[data-state="loading"] { opacity: 0.7; }
.banner.is-disabled, .banner[aria-disabled="true"] { opacity: 0.5; }

/* ---------- Toast ---------- */
.toast {
  position: fixed;
  bottom: var(--space-lg);
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-paper-2);
  border: 1px solid var(--color-rule);
  border-radius: 12px;
  padding: var(--space-sm) var(--space-md);
  box-shadow: var(--shadow-whisper);
  z-index: var(--z-toast);
  color: var(--color-ink);
  font-size: var(--text-sm);
}
.toast:hover, .toast.is-hover { border-color: var(--color-neutral); }
.toast:focus-visible, .toast.is-focus { outline: 2px solid var(--color-focus); outline-offset: 2px; }
.toast:active, .toast.is-active { transform: translateX(-50%) translateY(1px); }
.toast:disabled, .toast.is-disabled { opacity: 0.5; }
.toast[data-state="loading"], .toast.is-loading { opacity: 0.6; }
.toast[data-state="error"] { border-color: var(--color-danger); color: var(--color-danger); }
.toast[data-state="success"] { border-color: var(--color-success); color: var(--color-success); }

/* ---------- EmptyState ---------- */
.empty-state {
  display: grid;
  place-items: center;
  gap: var(--space-sm);
  text-align: center;
  padding: var(--space-2xl);
  color: var(--color-muted);
}
.empty-state--loading { opacity: 0.6; }
.empty-state--error { color: var(--color-danger); }
.empty-state--success { color: var(--color-success); }
/* The `hidden` attribute must win over the grid layout above, or the "Waiting
 * for the host…" overlay stays visible once a stream is attached. */
.empty-state[hidden] { display: none; }

/* ---------- AudioMeter ---------- */
.audio-meter {
  display: inline-flex;
  align-items: flex-end;
  gap: 2px;
  height: 1.25rem;
}
.audio-meter__bar {
  width: 3px;
  border-radius: 999px;
  background: var(--color-accent);
  height: 0.4em;
  transition: height var(--dur-fast) var(--ease-out);
}
.audio-meter:hover, .audio-meter.is-hover { filter: brightness(1.05); }
.audio-meter:focus-visible, .audio-meter.is-focus { outline: 2px solid var(--color-focus); outline-offset: 2px; }
.audio-meter:active, .audio-meter.is-active { transform: scale(0.98); }
.audio-meter[data-state="error"] .audio-meter__bar { background: var(--color-danger); }
.audio-meter[data-state="success"] .audio-meter__bar { background: var(--color-success); }
.audio-meter[data-state="loading"] .audio-meter__bar { opacity: 0.5; }
.audio-meter:disabled, .audio-meter.is-disabled { opacity: 0.4; }