/*
 * ui.css — gemeinsame Bausteine (aus den MATTERN-Tools): Buttons,
 * Icon-Buttons, Segment-Umschalter, Toast, Hilfsklassen.
 */

.btn {
  appearance: none;
  border: 1px solid var(--bar-border);
  background: transparent;
  color: var(--bar-fg);
  border-radius: var(--radius);
  padding: var(--sp-2) var(--sp-4);
  font-size: var(--fs-sm);
  cursor: pointer;
  white-space: nowrap;
  transition: background var(--transition-fast), border-color var(--transition-fast);
}

.btn:hover,
.btn:focus-visible {
  background: var(--bar-hover);
  outline: none;
}

.btn:active {
  background: var(--bar-active);
}

.btn-primary {
  border-color: var(--bar-fg);
  font-weight: 600;
}

.btn-danger {
  color: var(--bar-danger);
  border-color: var(--bar-danger);
}

.btn-icon {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--bar-fg);
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-pill);
  cursor: pointer;
  padding: 0;
  flex: 0 0 auto;
}

.btn-icon:hover,
.btn-icon:focus-visible {
  background: var(--bar-hover);
  outline: none;
}

.btn-icon svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* Regel L: negativ links, positiv rechts */
.actions {
  display: flex;
  justify-content: space-between;
  gap: var(--sp-2);
  margin-top: var(--sp-4);
}

.segmented {
  display: inline-flex;
  padding: 2px;
  background: var(--surface-3);
  border-radius: var(--radius);
}

.segmented-option {
  appearance: none;
  border: 0;
  background: transparent;
  padding: 5px var(--sp-4);
  font-size: var(--fs-sm);
  border-radius: 7px;
  cursor: pointer;
  white-space: nowrap;
}

.segmented-option.is-active {
  background: #636366;
  font-weight: 600;
  box-shadow: 0 3px 8px rgba(0, 0, 0, 0.25);
}

.toast {
  position: fixed;
  left: 50%;
  top: calc(var(--safe-top) + 14px);
  z-index: 100;
  transform: translate(-50%, -12px);
  max-width: min(90vw, 480px);
  padding: var(--sp-2) var(--sp-4);
  border-radius: var(--radius-pill);
  background: var(--glass-strong);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  font-size: var(--fs-sm);
  text-align: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-mid), transform var(--transition-mid);
}

.toast.is-visible {
  opacity: 1;
  transform: translate(-50%, 0);
}

.toast.is-error {
  border-color: var(--bar-danger);
  color: var(--bar-danger);
}

.sprite {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.noscript {
  position: fixed;
  inset: auto 0 40px;
  z-index: 200;
  text-align: center;
  color: var(--bar-fg-dim);
}

/* Kein Gummiband/Ziehen-zum-Aktualisieren (stoert Spiele und Vollbild auf Touch-Geraeten) */
html,
body {
  overscroll-behavior: none;
}

/* Ton an/aus (js/sfx.js): zeigt Lautsprecher bzw. durchgestrichen */
.sound-toggle .snd-off,
.sound-toggle.is-off .snd-on {
  display: none;
}

.sound-toggle.is-off .snd-off {
  display: inline;
}

.sound-toggle.is-off {
  opacity: 0.6;
}

/* Apple (js/fullscreen.js): kein Doppeltipp-Zoom, kein Lupen-/Kopiermenue beim langen Druecken in Spielen */
html.is-apple {
  touch-action: manipulation;
}

html.is-apple .game,
html.is-apple .home {
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  user-select: none;
}

/* VORSCHLAG T-261024-FBCC (nicht am Geraet pruefbar): iPad im Fenstermodus
   (Stage Manager) – Fensterknoepfe links oben ueber Kopfleiste und Statusleiste.
   Klasse setzt core/js/fullscreen.js. Bitte am iPad pruefen. */
html.is-windowed .appbar {
  padding-left: calc(var(--sp-2) + 76px);
}

html.is-windowed .statusbar {
  padding-left: calc(var(--gutter) + 8px + 76px);
}

/* ---------- System-Knoepfe Ton · Vollbild · Sprache (core/view/systools.html.php) ---------- */

.sys-btn {
  width: auto;
  min-width: 32px;
  gap: 6px;
  padding: 0 6px;
}

.fs-toggle .fs-off,
.fs-toggle.is-active .fs-on {
  display: none;
}

.fs-toggle.is-active .fs-off {
  display: inline;
}

.sys-label {
  display: none;
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
}

/* Wo Platz ist: Beschriftung hinter dem Symbol */
@media (min-width: 1100px) {
  .sys-label {
    display: inline;
  }
}

/* Sprach-Dropdown (systools.js): Pfeil am Knopf, Menue am Body unter dem Knopf */
.btn-icon .lang-caret {
  width: 10px;
  height: 10px;
  margin-left: -3px;
  stroke-width: 2.4;
  opacity: 0.6;
  transition: transform var(--transition-fast);
}

.lang-toggle[aria-expanded="true"] .lang-caret {
  transform: rotate(180deg);
}

.lang-menu {
  position: fixed;
  z-index: 150;
  display: flex;
  flex-direction: column;
  min-width: 156px;
  padding: 4px;
  border-radius: var(--radius-lg);
  background: var(--glass-strong);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
  animation: lang-menu-in 140ms ease-out;
}

@keyframes lang-menu-in {
  from { opacity: 0; transform: translateY(-4px); }
}

.lang-item {
  appearance: none;
  border: 0;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 10px;
  border-radius: var(--radius);
  background: transparent;
  color: var(--bar-fg);
  font: inherit;
  font-size: 13px;
  text-align: left;
  cursor: pointer;
}

.lang-item:hover,
.lang-item:focus-visible {
  background: var(--bar-hover);
  outline: none;
}

.lang-item.is-active {
  background: var(--bar-active);
  font-weight: 600;
}

.lang-item-code {
  min-width: 22px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--bar-fg-dim);
}

.appbar-sys {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  margin-right: var(--sp-2);
  padding-right: var(--sp-2);
  border-right: 1px solid var(--bar-border);
}

/* Schmale Bildschirme: Titel schrumpft (…), ganz schmal haben die System-Knoepfe Vorrang */
@media (max-width: 420px) {
  .appbar-title {
    display: none;
  }
}

@media (max-width: 720px) {

  .sys-btn {
    min-width: 30px;
    padding: 0 3px;
  }

  .appbar-sys {
    margin-right: var(--sp-1);
    padding-right: var(--sp-1);
  }
}