/* Composants de base — socle Phase G (s'appuie sur css/tokens.css). */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
}

/* ── Boutons ──────────────────────────────────────────────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 48px;
  padding: 0 20px;
  border: none;
  border-radius: var(--radius-btn);
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
  transition: background-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn--accent {
  background: var(--color-accent);
  color: var(--color-on-accent);
}
.btn--accent:not(:disabled):hover { background: var(--color-accent-hover); }

.btn--primary {
  background: var(--color-primary);
  color: var(--color-on-primary);
}
.btn--primary:not(:disabled):hover { background: var(--color-primary-hover); }

.btn--outline {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}
.btn--outline:not(:disabled):hover { background: var(--color-primary-tint); }

.btn:not(:disabled):active { transform: translateY(1px); }

/* ── Cards ────────────────────────────────────────────────────────────────── */

.card {
  background: var(--color-surface);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.card--interactive:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
}

/* ── Bouton de bascule clair/sombre ───────────────────────────────────────── */

.theme-toggle {
  position: fixed;
  top: 16px;
  right: 16px;
  z-index: 1000;
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  background: var(--color-surface);
  color: var(--color-text);
  box-shadow: var(--shadow-card);
  cursor: pointer;
  transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.theme-toggle:hover { background: var(--color-primary-tint); }
.theme-toggle:active { transform: scale(0.94); }

@media (prefers-reduced-motion: reduce) {
  .btn, .card, .theme-toggle { transition: none; }
}