/* ─── Onboarding Tutorial Engine ─────────────────────────────────────────────
   Adapted from the professor-mode sidebar pattern for instructor onboarding.
   Works on admin pages — sidebar overlay + element highlighting + progress.
────────────────────────────────────────────────────────────────────────────── */

/* ── Overlay ─────────────────────────────────────────────────────────────── */

#onboarding-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  z-index: 98000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

#onboarding-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

/* ── Sidebar ─────────────────────────────────────────────────────────────── */

#onboarding-sidebar {
  position: fixed;
  top: 0;
  left: -380px;
  width: 360px;
  height: 100vh;
  background: var(--app-card-bg, #fff);
  box-shadow: 4px 0 24px rgba(0, 0, 0, 0.15);
  z-index: 99000;
  display: flex;
  flex-direction: column;
  transition: left 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  overflow: hidden;
}

#onboarding-sidebar.active {
  left: 0;
}

/* Header */
.onboarding-sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  background: linear-gradient(135deg, #2a7de1 0%, #1a5fb4 100%);
  color: #fff;
  flex-shrink: 0;
}

.onboarding-sidebar-header h2 {
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.onboarding-header-buttons {
  display: flex;
  gap: 8px;
}

.onboarding-header-buttons button {
  width: 30px;
  height: 30px;
  border: none;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
  font-size: 1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
}

.onboarding-header-buttons button:hover {
  background: rgba(255, 255, 255, 0.35);
}

.onboarding-header-buttons button:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 2px;
}

/* Progress bar */
.onboarding-progress-bar {
  height: 4px;
  background: var(--app-border, #d6dfea);
  flex-shrink: 0;
}

.onboarding-progress-fill {
  height: 100%;
  background: var(--app-accent, #2a7de1);
  transition: width 0.4s ease;
  border-radius: 0 2px 2px 0;
}

/* Content */
.onboarding-sidebar-content {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
}

.onboarding-step-badge {
  display: inline-block;
  background: var(--app-accent, #2a7de1);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 12px;
  margin-bottom: 12px;
}

.onboarding-step-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--app-text, #1f2a37);
  margin: 0 0 12px 0;
}

.onboarding-step-body {
  font-size: 0.92rem;
  line-height: 1.6;
  color: var(--app-text, #1f2a37);
}

.onboarding-step-body p {
  margin: 0 0 10px 0;
}

.onboarding-step-body strong {
  color: var(--app-accent-dark, #1a5fb4);
}

/* "Now Try It" nudge at end */
.onboarding-nudge {
  margin-top: 16px;
  padding: 12px 16px;
  border-left: 4px solid var(--app-accent, #2a7de1);
  background: #e8f0fe;
  border-radius: 0 8px 8px 0;
  font-size: 0.88rem;
}

.onboarding-nudge a {
  color: var(--app-accent, #2a7de1);
  font-weight: 600;
  text-decoration: none;
}

.onboarding-nudge a:hover {
  text-decoration: underline;
}

/* Footer / Navigation buttons */
.onboarding-sidebar-footer {
  display: flex;
  gap: 8px;
  padding: 16px 20px;
  border-top: 1px solid var(--app-border, #d6dfea);
  flex-shrink: 0;
}

.onboarding-btn {
  padding: 8px 16px;
  border: none;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s, opacity 0.2s;
}

.onboarding-btn:focus-visible {
  outline: 2px solid var(--app-accent, #2a7de1);
  outline-offset: 2px;
}

.onboarding-btn-primary {
  background: var(--app-accent, #2a7de1);
  color: #fff;
  flex: 1;
}

.onboarding-btn-primary:hover {
  background: var(--app-accent-dark, #1a5fb4);
}

.onboarding-btn-waiting {
  background: var(--app-border, #d6dfea) !important;
  color: var(--app-muted, #5f6b7a) !important;
  cursor: not-allowed;
  opacity: 0.85;
  font-size: 0.82rem;
}

@keyframes onb-unlock-flash {
  0% { box-shadow: 0 0 0 0 rgba(5,150,105,0.5); }
  50% { box-shadow: 0 0 0 6px rgba(5,150,105,0.15); }
  100% { box-shadow: 0 0 0 0 rgba(5,150,105,0); }
}
.onboarding-btn-unlocked {
  background: #059669 !important;
  animation: onb-unlock-flash 1.2s ease-out;
}

.onboarding-btn-secondary {
  background: var(--app-bg, #f5f7fb);
  color: var(--app-muted, #5f6b7a);
  flex: 0 0 auto;
}

.onboarding-btn-secondary:hover {
  background: var(--app-border, #d6dfea);
}

.onboarding-btn-accent {
  background: #059669;
  color: #fff;
  flex: 1;
}

.onboarding-btn-accent:hover {
  background: #047857;
}

.onboarding-btn-exit {
  background: none;
  border: 1px solid var(--app-border, #d6dfea);
  color: var(--app-muted, #5f6b7a);
  flex: 0 0 auto;
}

.onboarding-btn-exit:hover {
  background: #fef2f2;
  border-color: var(--app-danger, #d64747);
  color: var(--app-danger, #d64747);
}

/* ── Element Highlight ───────────────────────────────────────────────────── */

.onboarding-highlight {
  position: relative !important;
  z-index: 98500 !important;
  box-shadow:
    0 0 0 4px var(--app-accent, #2a7de1),
    0 0 20px rgba(42, 125, 225, 0.3) !important;
  border-radius: 8px !important;
  animation: onboardingPulse 2s ease-in-out infinite;
}

@keyframes onboardingPulse {
  0%, 100% { box-shadow: 0 0 0 4px var(--app-accent, #2a7de1), 0 0 20px rgba(42, 125, 225, 0.3); }
  50%      { box-shadow: 0 0 0 6px var(--app-accent, #2a7de1), 0 0 30px rgba(42, 125, 225, 0.45); }
}

/* ── Minimize Pill ───────────────────────────────────────────────────────── */

#onboarding-pill {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 99100;
  display: none;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  background: linear-gradient(135deg, #2a7de1 0%, #1a5fb4 100%);
  color: #fff;
  border: none;
  border-radius: 24px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(42, 125, 225, 0.35);
  transition: transform 0.2s, box-shadow 0.2s;
}

#onboarding-pill.visible {
  display: flex;
}

#onboarding-pill:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(42, 125, 225, 0.45);
}

#onboarding-pill:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 2px;
}

.onboarding-pill-icon {
  font-size: 1.1rem;
}

/* ── Floating Card (fallback when no target found) ───────────────────────── */

.onboarding-float-card {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 98500;
  background: var(--app-card-bg, #fff);
  border-radius: 12px;
  padding: 24px 28px;
  max-width: 420px;
  width: 90%;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
  text-align: center;
}

.onboarding-float-card .onboarding-step-title {
  font-size: 1.15rem;
  margin-bottom: 8px;
}

.onboarding-float-card .onboarding-step-body {
  text-align: left;
}

/* ── Completion Toast ────────────────────────────────────────────────────── */

.onboarding-toast {
  position: fixed;
  top: 24px;
  right: 24px;
  z-index: 99200;
  background: var(--app-success, #2f9d58);
  color: #fff;
  padding: 14px 24px;
  border-radius: 12px;
  font-size: 0.92rem;
  font-weight: 600;
  box-shadow: 0 4px 16px rgba(47, 157, 88, 0.35);
  animation: onboardingToastIn 0.4s cubic-bezier(0.34, 1.56, 0.64, 1),
             onboardingToastOut 0.35s ease 3.5s forwards;
}

@keyframes onboardingToastIn {
  from { transform: translateX(120%); opacity: 0; }
  to   { transform: translateX(0); opacity: 1; }
}

@keyframes onboardingToastOut {
  from { transform: translateX(0); opacity: 1; }
  to   { transform: translateX(120%); opacity: 0; }
}

/* ── Body shift when sidebar is open (desktop) ───────────────────────────── */

body.onboarding-active {
  overflow-x: hidden;
}

@media (min-width: 901px) {
  body.onboarding-active {
    padding-left: 360px;
    transition: padding-left 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  }
}

/* ── Responsive: sidebar as bottom sheet on mobile ───────────────────────── */

@media (max-width: 768px) {
  #onboarding-sidebar {
    top: auto;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 55vh;
    transform: translateY(100%);
    border-radius: 16px 16px 0 0;
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  }

  #onboarding-sidebar.active {
    left: 0;
    transform: translateY(0);
  }

  body.onboarding-active {
    padding-left: 0;
  }
}

/* ── Reduced motion ──────────────────────────────────────────────────────── */

@media (prefers-reduced-motion: reduce) {
  .onboarding-highlight {
    animation: none !important;
  }

  .onboarding-toast {
    animation: none !important;
    opacity: 1;
  }

  #onboarding-sidebar,
  #onboarding-overlay,
  .onboarding-progress-fill {
    transition-duration: 0.01ms !important;
  }
}

/* ── Verification Prompt ─────────────────────────────────────────────────── */

.onboarding-verify-prompt {
  text-align: center;
  padding: 24px 12px 12px;
}

.onboarding-verify-icon {
  font-size: 2.2rem;
  display: block;
  margin-bottom: 12px;
}

.onboarding-verify-msg {
  font-size: 0.9rem;
  color: var(--app-text-secondary, #555);
  line-height: 1.55;
  margin-top: 12px;
}

/* ── Post-Tutorial Navigation Modal ──────────────────────────────────────── */

.onboarding-nav-modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 99300;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.25s ease;
}

.onboarding-nav-modal-backdrop.visible {
  opacity: 1;
}

.onboarding-nav-modal {
  background: #fff;
  border-radius: 16px;
  padding: 36px 32px 28px;
  max-width: 420px;
  width: 90%;
  text-align: center;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
  transform: scale(0.9);
  transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.onboarding-nav-modal-backdrop.visible .onboarding-nav-modal {
  transform: scale(1);
}

.onboarding-nav-check {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  background: var(--app-success, #2f9d58);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  font-weight: 700;
}

.onboarding-nav-modal h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--app-text, #1a1a2e);
  margin: 0 0 6px;
}

.onboarding-nav-subtitle {
  font-size: 0.9rem;
  color: var(--app-text-secondary, #555);
  margin: 0 0 24px;
}

.onboarding-nav-buttons {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.onboarding-nav-buttons .onboarding-btn {
  width: 100%;
  justify-content: center;
}

@media (prefers-reduced-motion: reduce) {
  .onboarding-nav-modal-backdrop,
  .onboarding-nav-modal {
    transition-duration: 0.01ms !important;
  }
}

/* ── Prerequisite Block ──────────────────────────────────────────────── */

.onboarding-prereq-block {
  text-align: center;
  padding: 24px 8px 12px;
}

.onboarding-prereq-lock {
  font-size: 2.4rem;
  margin-bottom: 8px;
}

.onboarding-prereq-msg {
  font-size: 0.88rem;
  color: var(--app-text-secondary, #555);
  margin: 0 0 18px;
  line-height: 1.5;
}

.onb-prereq-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
  text-align: left;
}

.onb-prereq-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: #fef3c7;
  border: 1px solid #fcd34d;
  border-radius: 8px;
}

.onb-prereq-icon {
  font-size: 1.1rem;
  flex-shrink: 0;
}

.onb-prereq-name {
  font-size: 0.88rem;
  font-weight: 500;
  color: #92400e;
}

/* ── Contextual Tutorials FAB ────────────────────────────────────────── */

.onboarding-fab {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 97000;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 16px;
  background: #fff;
  color: var(--app-accent, #2a7de1);
  border: 1px solid var(--app-border, #d6dfea);
  border-radius: 24px;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.1);
  transition: box-shadow 0.2s, transform 0.2s, background 0.2s;
}

.onboarding-fab:hover {
  box-shadow: 0 4px 18px rgba(42, 125, 225, 0.2);
  transform: translateY(-1px);
}

.onboarding-fab.active {
  background: var(--app-accent, #2a7de1);
  color: #fff;
  border-color: var(--app-accent, #2a7de1);
}

.onboarding-fab:focus-visible {
  outline: 2px solid var(--app-accent, #2a7de1);
  outline-offset: 2px;
}

.onboarding-fab-icon {
  font-size: 1rem;
}

.onboarding-fab-popover {
  position: fixed;
  bottom: 68px;
  right: 24px;
  z-index: 97001;
  width: 280px;
  background: #fff;
  border: 1px solid var(--app-border, #d6dfea);
  border-radius: 12px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
  opacity: 0;
  transform: translateY(8px);
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.onboarding-fab-popover.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.onboarding-fab-popover-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px 8px;
  font-size: 0.82rem;
  color: var(--app-muted, #5f6b7a);
  border-bottom: 1px solid var(--app-border, #d6dfea);
}

.onboarding-fab-dismiss {
  background: none;
  border: none;
  font-size: 1.1rem;
  color: var(--app-muted, #5f6b7a);
  cursor: pointer;
  padding: 0 2px;
  line-height: 1;
}

.onboarding-fab-dismiss:hover {
  color: var(--app-danger, #d64747);
}

.onboarding-fab-list {
  list-style: none;
  margin: 0;
  padding: 8px 0;
}

.onboarding-fab-list li {
  margin: 0;
}

.onboarding-fab-link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 32px 8px 16px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--app-text, #1f2a37);
  text-decoration: none;
  transition: background 0.15s;
}

.onboarding-fab-link:hover {
  background: var(--app-bg, #f5f7fb);
  color: var(--app-accent, #2a7de1);
}

.onboarding-fab-play {
  font-size: 0.7rem;
  color: var(--app-accent, #2a7de1);
  flex-shrink: 0;
}

/* Per-tutorial dismiss button */
.onboarding-fab-list li {
  position: relative;
}

.onboarding-fab-item-dismiss {
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  font-size: 1rem;
  color: var(--app-muted, #5f6b7a);
  cursor: pointer;
  padding: 2px 4px;
  line-height: 1;
  opacity: 0;
  transition: opacity 0.15s, color 0.15s;
}

.onboarding-fab-list li:hover .onboarding-fab-item-dismiss {
  opacity: 1;
}

.onboarding-fab-item-dismiss:hover {
  color: var(--app-danger, #d64747);
}

/* Dismiss choice strip */
.onboarding-fab-dismiss-choice {
  display: flex;
  gap: 4px;
  padding: 6px 12px;
  align-items: center;
}

.onboarding-fab-dismiss-choice button {
  flex: 1;
  padding: 4px 8px;
  border: 1px solid var(--app-border, #d6dfea);
  border-radius: 6px;
  background: #fff;
  font-size: 0.75rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.onb-fab-snooze:hover {
  background: #fef3c7;
  border-color: #fcd34d;
  color: #92400e;
}

.onb-fab-hide:hover {
  background: #fee2e2;
  border-color: #fca5a5;
  color: #991b1b;
}

.onb-fab-cancel {
  flex: 0 !important;
  padding: 4px 6px !important;
  background: transparent !important;
  border: none !important;
  color: var(--app-muted, #5f6b7a);
}

.onb-fab-cancel:hover {
  color: var(--app-text, #1f2a37) !important;
}

@media (max-width: 768px) {
  .onboarding-fab {
    bottom: 16px;
    right: 16px;
  }
  .onboarding-fab-popover {
    bottom: 58px;
    right: 16px;
    width: calc(100vw - 32px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .onboarding-fab,
  .onboarding-fab-popover {
    transition-duration: 0.01ms !important;
  }
}