/* === Buttons === */
.btn {
  display: inline-flex; align-items: center; gap: var(--sp-2);
  padding: var(--sp-3) var(--sp-6);
  border-radius: var(--r-md);
  font-weight: 700;
  font-size: var(--fs-sm);
  border: 2px solid transparent;
  transition: transform var(--dur-fast) var(--ease-out),
              background var(--dur-fast) var(--ease-out),
              box-shadow var(--dur-fast) var(--ease-out);
  min-height: 44px;
  justify-content: center;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary {
  background: var(--c-action-btn);
  color: var(--c-action-ink);
  border-color: var(--c-action-btn);
  box-shadow: var(--shadow-action);
}
.btn-primary:hover { background: var(--c-action-dark); border-color: var(--c-action-dark); }
.btn-primary:focus-visible { outline: none; box-shadow: 0 0 0 3px rgba(45, 152, 94, 0.4); }
.btn-primary:disabled { background: #b8b8b8; border-color: #b8b8b8; cursor: not-allowed; transform: none; box-shadow: none; }
.btn-ghost {
  background: transparent;
  color: var(--c-ink);
  border-color: #cfd8df;
}
.btn-ghost:hover { border-color: var(--c-ink); background: var(--c-surface); }
.btn-icon { padding: var(--sp-2); width: 40px; height: 40px; justify-content: center; }

/* === Toolbar === */
.toolbar {
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--sp-3);
  padding-bottom: var(--sp-3);
}
.toolbar-meta { display: flex; align-items: center; gap: var(--sp-2); color: var(--c-ink-soft); font-size: var(--fs-sm); }
.toolbar-actions { display: flex; align-items: center; gap: var(--sp-2); }

/* === Progress bar === */
.progress {
  display: flex; align-items: center; gap: var(--sp-2);
  font-size: var(--fs-sm); color: var(--c-ink-soft);
}
.progress-track {
  flex: 1; height: 6px; background: rgba(36, 59, 83, 0.10); border-radius: var(--r-pill);
  overflow: hidden; min-width: 140px;
}
.progress-fill {
  height: 100%; background: var(--c-action); width: 0;
  transition: width var(--dur-slow) var(--ease-out);
}

/* === Popup === */
.popup-backdrop {
  position: absolute; inset: 0;
  background: rgba(36, 59, 83, 0.55);
  display: flex; align-items: center; justify-content: center;
  z-index: 30;
  animation: fadeIn var(--dur-base) var(--ease-out);
}
.popup {
  background: var(--c-bg);
  border-radius: var(--r-lg);
  padding: var(--sp-8);
  max-width: 520px;
  box-shadow: var(--shadow-pop);
  animation: popIn var(--dur-base) var(--ease-out);
}
.popup h3 { margin: 0 0 var(--sp-3); font-family: var(--font-display); font-size: var(--fs-lg); font-weight: 700; }
.popup p  { margin: 0 0 var(--sp-4); line-height: 1.55; }
.popup img { border-radius: var(--r-md); margin-bottom: var(--sp-4); max-width: 100%; }

/* === Hint button + bubble (in toolbar, fixed position for bubble) === */
.hint-trigger {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  font-size: var(--fs-md);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
}
.hint-trigger:hover { background: var(--c-surface); border-color: var(--c-ink); }

.hint-bubble {
  position: fixed;
  top: 80px;
  right: var(--sp-4);
  max-width: 320px;
  background: var(--c-ink);
  color: var(--c-bg);
  padding: var(--sp-3) var(--sp-4);
  border-radius: var(--r-md);
  font-size: var(--fs-sm);
  line-height: 1.5;
  box-shadow: var(--shadow-pop);
  z-index: 100;
  animation: popIn var(--dur-base) var(--ease-out);
}
.hint-bubble[hidden] { display: none; }

/* === Popup image with overlaid input === */
.popup-image-wrap { position: relative; display: inline-block; width: 100%; }
.popup-image-wrap img { border-radius: var(--r-md); margin-bottom: 0; max-width: 100%; display: block; }
.popup-input {
  position: absolute;
  background: rgba(255, 255, 255, 0.95);
  border: 2px solid var(--c-action);
  font-family: 'Consolas', 'Courier New', monospace;
  font-size: 13px;
  padding: 0 4px;
  color: var(--c-ink);
  border-radius: 2px;
  box-sizing: border-box;
  outline: none;
  z-index: 5;
}
.popup-input:focus { box-shadow: 0 0 0 3px rgba(45, 152, 94, 0.3); }
.popup-input.correct {
  background: color-mix(in srgb, var(--c-action) 18%, white);
  border-color: var(--c-action);
}
.popup-input.incorrect {
  border-color: var(--c-error);
  animation: shake 500ms ease-out;
}
.popup-input-feedback {
  position: absolute;
  bottom: calc(-1.6em - 4px);
  left: 0;
  right: 0;
  margin-top: var(--sp-2);
  font-size: var(--fs-sm);
  color: var(--c-error);
  background: rgba(255,255,255,0.95);
  padding: 2px 6px;
  border-radius: var(--r-sm);
}
.popup-input-feedback.ok { color: var(--c-action); }
.popup-input-feedback[hidden] { display: none; }

/* === SAP Input fields (type: "input" hotspots) === */
.sap-input {
  position: absolute;
  font-family: 'Courier New', Courier, monospace;
  font-size: 13px;
  color: #1a1a1a;
  background: rgba(255, 255, 255, 0.92);
  border: 2px solid transparent;
  border-radius: 2px;
  padding: 1px 3px;
  outline: none;
  box-sizing: border-box;
  transition: border-color var(--dur-fast) var(--ease-out),
              background var(--dur-fast) var(--ease-out);
  z-index: 10;
}
.sap-input:focus {
  border-color: var(--c-action);
  background: #fff;
  box-shadow: 0 0 0 2px rgba(45, 152, 94, 0.25);
}
.sap-input.correct {
  border-color: var(--c-action);
  background: rgba(238, 248, 242, 0.95);
  color: var(--c-action-dark);
}
.sap-input.incorrect {
  border-color: var(--c-error);
  background: rgba(255, 245, 244, 0.95);
  animation: shake 400ms var(--ease-out);
}

/* === Input feedback toast (per-field) === */
.input-feedback {
  position: absolute;
  font-size: 11px;
  padding: 3px 7px;
  border-radius: var(--r-sm);
  white-space: nowrap;
  pointer-events: none;
  z-index: 20;
  animation: toastIn var(--dur-base) var(--ease-out);
}
.input-feedback[hidden] { display: none; }
.feedback-ok {
  background: var(--c-action);
  color: #fff;
}
.feedback-ko {
  background: var(--c-error);
  color: #fff;
  max-width: 280px;
  white-space: normal;
  line-height: 1.3;
}

/* === Validation toast (step complete) === */
.validation-toast {
  position: absolute;
  bottom: var(--sp-4);
  left: 50%;
  transform: translateX(-50%);
  background: var(--c-action);
  color: #fff;
  padding: var(--sp-2) var(--sp-6);
  border-radius: var(--r-pill);
  font-size: var(--fs-sm);
  font-weight: 600;
  z-index: 50;
  animation: toastIn var(--dur-base) var(--ease-out);
  box-shadow: var(--shadow-action);
}

/* === Language toggle (FR / EN) — iOS-style pill with thumb === */
.lang-toggle {
  display: inline-flex;
  align-items: center;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--r-pill);
  padding: 3px;
  gap: 0;
  flex-shrink: 0;
  box-shadow: inset 0 1px 1px rgba(15, 23, 42, 0.04);
}
.lang-btn {
  padding: 4px 14px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--c-ink-soft);
  background: transparent;
  border: 0;
  cursor: pointer;
  border-radius: var(--r-pill);
  transition: color 180ms ease-out, background 180ms ease-out, box-shadow 180ms ease-out;
  min-width: 32px;
}
.lang-btn:hover { color: var(--c-ink); }
.lang-btn-active {
  background: var(--c-bg);
  color: var(--c-ink);
  box-shadow: 0 1px 2px rgba(36, 59, 83, 0.16), 0 1px 1px rgba(36, 59, 83, 0.08);
}
.lang-btn-active:hover { color: var(--c-ink); background: var(--c-bg); }

/* === Toggle (audio / mode) === */
.toggle {
  display: inline-flex; align-items: center; gap: 4px;
  background: var(--c-surface);
  border-radius: var(--r-pill);
  padding: 4px;
}
.toggle button {
  padding: 6px 14px;
  font-size: var(--fs-xs);
  border-radius: var(--r-pill);
  color: var(--c-ink-soft);
  font-weight: 600;
}
.toggle button[aria-pressed="true"] {
  background: var(--c-ink);
  color: var(--c-bg);
}