/* ==========================================================================
   Rubik's 3D - Teaching / Tutorial Mode Stylesheet
   ========================================================================== */

.tutor-card {
  gap: 1.1rem;
}

/* Sub-Navigation Pills (Lessons vs Full Coach) */
.tutor-subnav-pills {
  display: flex;
  background: rgba(0, 0, 0, 0.4);
  padding: 0.35rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-glass);
  gap: 0.4rem;
  width: 100%;
}

.tutor-subnav-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.55rem 0.6rem;
  font-family: var(--font-family);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-muted);
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.tutor-subnav-btn:hover {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.05);
}

.tutor-subnav-btn.active {
  background: rgba(0, 240, 255, 0.15);
  color: var(--accent-cyan);
  border: 1px solid rgba(0, 240, 255, 0.3);
  box-shadow: 0 0 10px rgba(0, 240, 255, 0.2);
}

.tutor-subview {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  width: 100%;
}

.tutor-header {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.stage-badge-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.stage-tag {
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 1px;
  color: var(--accent-cyan);
  text-transform: uppercase;
}

.stage-level-badge {
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.15rem 0.6rem;
  border-radius: var(--radius-full);
  background: rgba(0, 240, 255, 0.15);
  color: var(--accent-cyan);
  border: 1px solid rgba(0, 240, 255, 0.3);
}

#tutor-stage-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-main);
}

.stage-select-dropdown-container {
  width: 100%;
}

.custom-select {
  width: 100%;
  padding: 0.6rem 0.85rem;
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  color: var(--text-main);
  font-family: var(--font-family);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  outline: none;
  transition: all var(--transition-fast);
}

.custom-select:focus {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 10px rgba(0, 240, 255, 0.25);
}

.custom-select option {
  background: #181b2a;
  color: #fff;
}

/* Step Progress Dots */
.tutor-progress-dots {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0;
  overflow-x: auto;
}

.step-dot {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border-glass);
  color: var(--text-dim);
  font-size: 0.75rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.step-dot:hover {
  background: rgba(255, 255, 255, 0.15);
  color: var(--text-main);
}

.step-dot.active {
  background: var(--accent-cyan);
  color: #000000;
  border-color: var(--accent-cyan);
  box-shadow: 0 0 12px rgba(0, 240, 255, 0.4);
}

.step-dot.completed {
  background: rgba(16, 185, 129, 0.2);
  color: var(--accent-green);
  border-color: rgba(16, 185, 129, 0.4);
}

/* Lesson Content Area */
.lesson-content-area {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  flex: 1;
}

/* Lesson Goal Box */
.lesson-goal-box {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.12), rgba(139, 92, 246, 0.12));
  border: 1px solid rgba(59, 130, 246, 0.25);
  border-radius: var(--radius-md);
  padding: 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.goal-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.5px;
  color: var(--accent-blue);
  text-transform: uppercase;
}

#lesson-goal-text {
  font-size: 0.85rem;
  color: var(--text-main);
  line-height: 1.45;
  font-weight: 500;
}

/* Holding Position Guide Card */
.holding-guide-card {
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  padding: 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.holding-header {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.5px;
  color: var(--accent-cyan);
}

.holding-pills-row {
  display: flex;
  gap: 0.6rem;
}

.holding-pill {
  flex: 1;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  padding: 0.35rem 0.6rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.78rem;
}

.pill-label {
  color: var(--text-muted);
}

.pill-val {
  font-weight: 700;
  color: var(--text-main);
}

.holding-tip {
  font-size: 0.75rem;
  color: var(--text-dim);
  font-style: italic;
  line-height: 1.35;
}

/* Pattern Recognition Box */
.pattern-recognition-box {
  background: rgba(0, 0, 0, 0.25);
  border-radius: var(--radius-md);
  padding: 0.85rem;
  border: 1px solid var(--border-glass);
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.pattern-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--accent-yellow);
}

.case-tag {
  background: rgba(245, 158, 11, 0.2);
  color: var(--accent-yellow);
  font-size: 0.65rem;
  font-weight: 800;
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  text-transform: uppercase;
}

.lookfor-text {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.45;
}

.strategy-callout {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  background: rgba(0, 240, 255, 0.08);
  border: 1px dashed rgba(0, 240, 255, 0.3);
  border-radius: var(--radius-sm);
  padding: 0.4rem 0.6rem;
  font-size: 0.78rem;
  color: var(--accent-cyan);
}

/* Algorithm Card */
.algorithm-card {
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(0, 240, 255, 0.25);
  border-radius: var(--radius-md);
  padding: 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.algo-label {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

#algo-name {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--accent-cyan);
}

.algo-mnemonic {
  font-size: 0.75rem;
  color: var(--text-dim);
  font-style: italic;
}

.algo-tokens {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.token {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 700;
  padding: 0.35rem 0.7rem;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border-glass);
  color: #ffffff;
  transition: all var(--transition-fast);
}

.token.active {
  background: var(--accent-cyan);
  color: #000;
  border-color: var(--accent-cyan);
  transform: scale(1.1);
  box-shadow: 0 0 12px rgba(0, 240, 255, 0.6);
}

.token.done {
  background: rgba(16, 185, 129, 0.25);
  border-color: rgba(16, 185, 129, 0.6);
  color: #10b981;
}

/* Tutor Mode Switch (Watch & Learn vs Try It Yourself) */
.tutor-mode-switch {
  display: flex;
  background: rgba(0, 0, 0, 0.3);
  padding: 0.3rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-glass);
  gap: 0.3rem;
}

.tutor-tab-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.55rem;
  font-family: var(--font-family);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text-muted);
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.tutor-tab-btn:hover {
  color: var(--text-main);
}

.tutor-tab-btn.active {
  background: rgba(255, 255, 255, 0.12);
  color: var(--accent-cyan);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

/* Practice Feedback */
.practice-feedback {
  padding: 0.65rem 0.85rem;
  border-radius: var(--radius-md);
  font-size: 0.82rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(59, 130, 246, 0.15);
  border: 1px solid rgba(59, 130, 246, 0.3);
  color: #93c5fd;
}

.practice-feedback.success {
  background: rgba(16, 185, 129, 0.15);
  border-color: rgba(16, 185, 129, 0.4);
  color: #6ee7b7;
}

.practice-feedback.error {
  background: rgba(239, 68, 68, 0.15);
  border-color: rgba(239, 68, 68, 0.4);
  color: #fca5a5;
}

/* Playback Controls Bar */
.playback-controls-bar {
  display: flex;
  gap: 0.45rem;
  align-items: center;
}

.playback-controls-bar #btn-lesson-demo,
.playback-controls-bar #btn-coach-next {
  flex: 1.6;
}

.playback-controls-bar #btn-lesson-prev,
.playback-controls-bar #btn-lesson-next,
.playback-controls-bar #btn-lesson-setup,
.playback-controls-bar #btn-coach-prev,
.playback-controls-bar #btn-coach-play,
.playback-controls-bar #btn-coach-restart {
  flex: 1;
}

/* Guided Coach Views */
.coach-idle-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 1.5rem 1rem;
  gap: 0.75rem;
  background: rgba(0, 0, 0, 0.3);
  border-radius: var(--radius-md);
  border: 1px dashed rgba(0, 240, 255, 0.3);
}

.coach-hero-icon {
  font-size: 2.2rem;
  color: var(--accent-cyan);
  background: rgba(0, 240, 255, 0.1);
  width: 60px;
  height: 60px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 0.25rem;
}

.coach-idle-card h4 {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--text-main);
}

.coach-idle-card p {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.45;
  max-width: 280px;
}

.coach-start-actions {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  width: 100%;
  margin-top: 0.5rem;
}

.coach-active-card {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.coach-progress-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.coach-stage-badge {
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.5px;
  color: var(--accent-cyan);
  text-transform: uppercase;
}

.coach-step-counter {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-dim);
}

.coach-progress-bar-bg {
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 3px;
  overflow: hidden;
}

.coach-progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-green));
  border-radius: 3px;
  transition: width 0.25s ease;
}

.coach-move-hero {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(0, 240, 255, 0.3);
  border-radius: var(--radius-md);
  padding: 0.85rem;
}

.coach-move-token {
  font-family: var(--font-mono);
  font-size: 1.6rem;
  font-weight: 900;
  color: #000;
  background: var(--accent-cyan);
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 15px rgba(0, 240, 255, 0.5);
  flex-shrink: 0;
}

.coach-move-meta {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

#coach-move-title {
  font-size: 0.92rem;
  font-weight: 800;
  color: var(--text-main);
}

#coach-move-desc {
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.35;
}