/* ============================================================================
 * Onboarding — New user welcome, first-visit tips, and empty-state hints
 *
 * Provides:
 *   1. Homepage welcome card (replaces empty recommendations)
 *   2. Hub page first-visit banner + starter module glow
 *   3. Flash card first-use overlay hint
 *   4. Practice first-use hint banner
 * ============================================================================ */

/* ── Shared animations ────────────────────────────────────────────────────── */

@keyframes onboardingFadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes onboardingPulse {
  0%, 100% { box-shadow: 0 0 0 0 var(--primary-soft); }
  50%      { box-shadow: 0 0 0 6px var(--primary-soft); }
}

/* ── 1. Homepage welcome card ─────────────────────────────────────────────── */

.onboarding-welcome {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 2rem 2.5rem;
  text-align: center;
  box-shadow: var(--shadow-sm);
  animation: onboardingFadeIn 0.5s ease-out;
  position: relative;
  margin-bottom: 2rem;
}

.onboarding-welcome__title {
  font-family: 'Fraunces', serif;
  font-size: clamp(1.3rem, 3.5vw, 1.8rem);
  font-weight: 700;
  color: var(--text);
  margin: 0 0 0.5rem;
}

.onboarding-welcome__desc {
  font-size: 0.95rem;
  color: var(--muted);
  margin: 0 0 1.5rem;
  line-height: 1.5;
}

.onboarding-welcome__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
}

.onboarding-welcome__cta {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.6rem 1.4rem;
  border: none;
  border-radius: 999px;
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  min-height: var(--touch-min, 2.75rem);
  transition: background 0.15s ease, transform 0.15s ease;
}

.onboarding-welcome__cta--primary {
  background: var(--primary);
  color: var(--primary-on, #0f172a);
}

.onboarding-welcome__cta--primary:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
}

.onboarding-welcome__cta--secondary {
  background: var(--surface-muted);
  color: var(--text);
  border: 1px solid var(--border);
}

.onboarding-welcome__cta--secondary:hover {
  background: var(--bg-hover);
  transform: translateY(-1px);
}

.onboarding-welcome__cta:focus-visible {
  outline: 2px solid var(--focus-ring, rgba(255, 138, 91, 0.6));
  outline-offset: 2px;
}

.onboarding-welcome__dismiss {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  background: none;
  border: none;
  color: var(--muted);
  font-size: 1.25rem;
  cursor: pointer;
  padding: 0.25rem 0.5rem;
  border-radius: 0.5rem;
  line-height: 1;
  transition: color 0.15s ease, background 0.15s ease;
}

.onboarding-welcome__dismiss:hover {
  color: var(--text);
  background: var(--surface-muted);
}

.onboarding-welcome__dismiss:focus-visible {
  outline: 2px solid var(--focus-ring, rgba(255, 138, 91, 0.6));
  outline-offset: 2px;
}

/* ── 2. Hub page first-visit banner ───────────────────────────────────────── */

.onboarding-hub-banner {
  background: var(--status-info-soft);
  border: 1px solid rgba(59, 130, 246, 0.25);
  border-radius: 0.75rem;
  padding: 0.75rem 1.25rem;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  animation: onboardingFadeIn 0.5s ease-out;
}

.onboarding-hub-banner__icon {
  font-size: 1.1rem;
  flex-shrink: 0;
}

.onboarding-hub-banner__text {
  font-size: 0.88rem;
  color: var(--text);
  line-height: 1.45;
  flex: 1;
}

.onboarding-hub-banner__dismiss {
  background: none;
  border: none;
  color: var(--muted);
  font-size: 1.1rem;
  cursor: pointer;
  padding: 0.2rem 0.4rem;
  border-radius: 0.375rem;
  line-height: 1;
  flex-shrink: 0;
  transition: color 0.15s ease;
}

.onboarding-hub-banner__dismiss:hover {
  color: var(--text);
}

/* Starter module highlight — pulsing border on "no prerequisites" modules */

.module-card--starter-highlight {
  border: 2px solid var(--primary);
  animation: onboardingPulse 2s ease-in-out 3;
}

/* ── 3. Flash card first-use overlay ──────────────────────────────────────── */

.onboarding-flash-overlay {
  position: fixed;
  inset: 0;
  z-index: 9000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.55);
  animation: onboardingFadeIn 0.35s ease-out;
}

.onboarding-flash-tip {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 2rem 2.5rem;
  max-width: 420px;
  width: 90%;
  text-align: center;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

.onboarding-flash-tip__icon {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.onboarding-flash-tip__title {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text);
  margin: 0 0 0.4rem;
}

.onboarding-flash-tip__desc {
  font-size: 0.9rem;
  color: var(--muted);
  margin: 0 0 1.25rem;
  line-height: 1.5;
}

.onboarding-flash-tip__btn {
  display: inline-flex;
  align-items: center;
  padding: 0.55rem 1.5rem;
  background: var(--primary);
  color: var(--primary-on, #0f172a);
  border: none;
  border-radius: 999px;
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  min-height: var(--touch-min, 2.75rem);
  transition: background 0.15s ease;
}

.onboarding-flash-tip__btn:hover {
  background: var(--primary-hover);
}

.onboarding-flash-tip__btn:focus-visible {
  outline: 2px solid var(--focus-ring, rgba(255, 138, 91, 0.6));
  outline-offset: 2px;
}

/* ── 4. Practice first-use hint banner ────────────────────────────────────── */

.onboarding-practice-banner {
  background: var(--status-info-soft);
  border: 1px solid rgba(59, 130, 246, 0.25);
  border-radius: 0.75rem;
  padding: 0.75rem 1.25rem;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  animation: onboardingFadeIn 0.5s ease-out;
}

.onboarding-practice-banner__icon {
  font-size: 1.1rem;
  flex-shrink: 0;
}

.onboarding-practice-banner__text {
  font-size: 0.88rem;
  color: var(--text);
  line-height: 1.45;
  flex: 1;
}

.onboarding-practice-banner__dismiss {
  background: none;
  border: none;
  color: var(--muted);
  font-size: 1.1rem;
  cursor: pointer;
  padding: 0.2rem 0.4rem;
  border-radius: 0.375rem;
  line-height: 1;
  flex-shrink: 0;
  transition: color 0.15s ease;
}

.onboarding-practice-banner__dismiss:hover {
  color: var(--text);
}

/* ── Responsive ───────────────────────────────────────────────────────────── */

/* ── Reduced motion ─────────────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  .onboarding-welcome,
  .onboarding-welcome__cta,
  .onboarding-welcome__dismiss,
  .onboarding-hub-banner,
  .onboarding-hub-banner__dismiss,
  .module-card--starter-highlight,
  .onboarding-flash-overlay,
  .onboarding-flash-tip__btn,
  .onboarding-practice-banner,
  .onboarding-practice-banner__dismiss {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

@media (max-width: 640px) {
  .onboarding-welcome {
    padding: 1.5rem 1.25rem;
  }

  .onboarding-welcome__actions {
    flex-direction: column;
    align-items: stretch;
  }

  .onboarding-welcome__cta {
    justify-content: center;
  }

  .onboarding-flash-tip {
    padding: 1.5rem 1.25rem;
  }
}