/* LEARN V2 — FORMATION HUB — TIER SELECTOR + TIER PAGES */
/* /learn = selector · /learn?tier=X = tier page */

:root {
  --bg-dark:      #0D0D0D;
  --bg-surface:   #151515;
  --accent-gold:  #C6A96B;
  --text-primary: #EAE3D2;
  --text-secondary: #A8A29E;
  --border-light: rgba(255,255,255,0.08);
}

.learn-page-v2 {
  background: var(--bg-dark);
  color: var(--text-primary);
  padding-bottom: 80px;
  min-height: 100%;
}

.learn-app-shell {
  max-width: 600px;
  margin: 0 auto;
}

/* SELECTOR VIEW */

.learn-selector-header {
  padding: 2.5rem 1.5rem 1.5rem;
  border-bottom: 1px solid var(--border-light);
}

.learn-selector-header h1 {
  font-size: 1.8rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0 0 0.25rem;
  color: var(--text-primary);
}

.learn-selector-sub {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin: 0;
}

.learn-selector-tier {
  color: var(--accent-gold);
  font-weight: 600;
}

.tier-selector-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  padding: 1.5rem;
}

.ts-card {
  border: 1px solid var(--border-light);
  border-radius: 16px;
  padding: 1.2rem;
  background: var(--bg-surface);
  cursor: pointer;
  transition: all 0.25s ease;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.ts-card--current {
  border-color: var(--accent-gold);
  box-shadow: 0 0 20px rgba(198,169,107,0.15);
}

.ts-card--current:hover {
  box-shadow: 0 0 28px rgba(198,169,107,0.25);
  transform: translateY(-2px);
}

.ts-card--open:not(.ts-card--current):hover {
  border-color: rgba(198,169,107,0.4);
  transform: translateY(-2px);
}

.ts-card--locked {
  opacity: 0.55;
}

.ts-card--locked:hover {
  opacity: 0.75;
  border-color: rgba(198,169,107,0.25);
  transform: translateY(-1px);
}

.ts-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.25rem;
}

.ts-icon {
  font-size: 1.4rem;
  line-height: 1;
}

.ts-lock-icon {
  font-size: 0.9rem;
  opacity: 0.6;
}

.ts-badge {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.15rem 0.55rem;
  border-radius: 20px;
  background: rgba(198,169,107,0.2);
  color: var(--accent-gold);
}

.ts-badge--access {
  background: rgba(198,169,107,0.08);
  color: var(--text-secondary);
}

.ts-title {
  font-size: 0.95rem;
  font-weight: 700;
  margin: 0;
  color: var(--text-primary);
}

.ts-price {
  font-size: 0.78rem;
  color: var(--accent-gold);
  font-weight: 600;
  margin: 0;
}

.ts-highlights {
  list-style: none;
  padding: 0;
  margin: 0.4rem 0;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  flex: 1;
}

.ts-highlights li {
  font-size: 0.7rem;
  color: var(--text-secondary);
  padding-left: 1em;
  position: relative;
  line-height: 1.4;
}

.ts-highlights li::before {
  content: '\B7';
  position: absolute;
  left: 0;
  color: var(--accent-gold);
}

.ts-cta {
  display: block;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-secondary);
  margin-top: auto;
}

.ts-cta--enter {
  color: var(--accent-gold);
}

/* TIER PAGE VIEW */

.learn-tier-header {
  padding: 1.5rem 1.5rem 1.2rem;
  border-bottom: 1px solid var(--border-light);
}

.learn-back-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 0.875rem;
  cursor: pointer;
  padding: 0;
  margin-bottom: 0.8rem;
  transition: color 0.2s;
}

.learn-back-btn:hover {
  color: var(--accent-gold);
}

.learn-tier-title-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.learn-tier-icon {
  font-size: 1.5rem;
  line-height: 1;
}

.learn-tier-name {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0;
}

.tier-badge-hero {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  padding: 0.2rem 0.6rem;
  border-radius: 20px;
  background: rgba(198,169,107,0.2);
  color: var(--accent-gold);
}

.tier-page-content {
  padding: 1.5rem;
}

.tier-upgrade-wall {
  text-align: center;
  padding: 3rem 1.5rem 2rem;
}

.tuw-icon {
  font-size: 2.5rem;
  margin-bottom: 0.75rem;
}

.tier-upgrade-wall h3 {
  font-size: 1.4rem;
  font-weight: 700;
  margin: 0 0 0.4rem;
}

.tuw-price {
  font-size: 1rem;
  color: var(--accent-gold);
  font-weight: 600;
  margin: 0 0 0.5rem;
}

.tuw-sub {
  color: var(--text-secondary);
  font-size: 0.875rem;
  margin: 0 0 1.8rem;
}

.tuw-back-btn {
  display: block;
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 0.825rem;
  cursor: pointer;
  margin-top: 1rem;
  text-align: center;
  width: 100%;
  transition: color 0.2s;
}

.tuw-back-btn:hover {
  color: var(--accent-gold);
}

.tier-loading {
  text-align: center;
  color: var(--text-secondary);
  padding: 2.5rem 1.5rem;
  font-size: 0.9rem;
}

.tier-empty {
  color: var(--text-secondary);
  font-size: 0.875rem;
  padding: 1.5rem 0;
  text-align: center;
}

/* MODULE CARD */

.module-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: 12px;
  padding: 1.5rem;
  margin-bottom: 1rem;
}

.module-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1rem;
}

.module-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin: 0;
  color: var(--accent-gold);
}

.module-badge {
  font-size: 0.7rem;
  padding: 0.2rem 0.6rem;
  border-radius: 10px;
  background: rgba(198,169,107,0.15);
  color: var(--accent-gold);
  font-weight: 600;
  white-space: nowrap;
}

.module-card p {
  color: var(--text-secondary);
  font-size: 0.875rem;
  line-height: 1.6;
  margin: 0 0 1.2rem;
}

.lesson-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem;
  background: rgba(198,169,107,0.05);
  border: 1px solid rgba(198,169,107,0.12);
  border-radius: 8px;
  margin-bottom: 0.6rem;
  cursor: pointer;
  transition: all 0.25s ease;
}

.lesson-row:hover {
  background: rgba(198,169,107,0.1);
  border-color: var(--accent-gold);
  transform: translateX(4px);
}

.lesson-row--preview {
  cursor: default;
  opacity: 0.7;
}

.lesson-row--preview:hover {
  transform: none;
  border-color: rgba(198,169,107,0.12);
  background: rgba(198,169,107,0.05);
}

.lesson-title {
  font-size: 0.875rem;
  font-weight: 500;
  flex: 1;
}

.lesson-arrow {
  color: var(--accent-gold);
  font-size: 0.9rem;
  opacity: 0.7;
}

.continue-block {
  margin-top: 1.2rem;
  padding: 1.5rem;
  background: rgba(198,169,107,0.05);
  border: 1px solid rgba(198,169,107,0.2);
  border-radius: 12px;
  text-align: center;
}

.continue-block p {
  color: var(--text-secondary);
  font-size: 0.875rem;
  margin: 0 0 1rem;
}

.btn-unlock {
  background: var(--accent-gold);
  color: #0D0D0D;
  border: none;
  padding: 0.75rem 1.8rem;
  border-radius: 8px;
  font-weight: 700;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.3s ease;
  display: inline-block;
}

.btn-unlock:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(198,169,107,0.4);
}

/* TIER HUB CARDS */

.tier-hub-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.thub-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: 14px;
  padding: 1.15rem;
  cursor: pointer;
  transition: all 0.25s ease;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  text-decoration: none;
  color: inherit;
}

.thub-card:hover {
  border-color: rgba(198,169,107,0.45);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.3);
}

.thub-card--locked {
  opacity: 0.45;
  cursor: pointer;
}

.thub-card--locked:hover {
  opacity: 0.65;
  border-color: rgba(198,169,107,0.2);
  transform: translateY(-1px);
  box-shadow: none;
}

/* Pressure-trigger locked cards — primary upgrade CTA, always visible */
.thub-card--pressure {
  opacity: 0.82;
  border-color: rgba(198,169,107,0.5) !important;
  background: linear-gradient(135deg, rgba(198,169,107,0.06) 0%, rgba(0,0,0,0) 100%);
}

.thub-card--pressure:hover {
  opacity: 1;
  border-color: rgba(198,169,107,0.85) !important;
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(198,169,107,0.18);
}

.thub-lock-badge--cta {
  background: rgba(198,169,107,0.18);
  color: var(--accent-gold);
  border: 1px solid rgba(198,169,107,0.35);
}

.thub-icon-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.3rem;
}

.thub-icon {
  font-size: 1.35rem;
  line-height: 1;
}

.thub-arrow {
  color: var(--accent-gold);
  font-size: 1rem;
  opacity: 0.7;
  transition: opacity 0.2s, transform 0.2s;
}

.thub-card:hover .thub-arrow {
  opacity: 1;
  transform: translateX(3px);
}

.thub-lock-badge {
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  padding: 0.15rem 0.5rem;
  border-radius: 20px;
  background: rgba(255,255,255,0.06);
  color: var(--text-secondary);
}

.thub-title {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
  line-height: 1.3;
}

.thub-sub {
  font-size: 0.72rem;
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.5;
}

@media (max-width: 400px) {
  .tier-selector-grid,
  .tier-hub-grid {
    grid-template-columns: 1fr;
  }
}