/* ===========================
   PCycle — Learn Hub Styles
   =========================== */

/* ---- Hero Section ---- */
.learn-hero {
  text-align: center;
  background: linear-gradient(180deg, var(--color-primary-bg) 0%, transparent 100%);
}

.learn-hero__title {
  font-size: var(--text-5xl);
  margin-top: var(--space-4);
  margin-bottom: var(--space-4);
  background: linear-gradient(135deg, var(--color-primary-dark), var(--color-lavender));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.learn-hero__subtitle {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto var(--space-10);
  line-height: var(--leading-relaxed);
}

/* ---- Tabs Override for Learn Page ---- */
.learn-tabs-wrapper {
  display: flex;
  justify-content: center;
}

.learn-tabs {
  flex-wrap: wrap;
  gap: var(--space-2);
  justify-content: center;
}

@media (max-width: 768px) {
  .learn-tabs {
    width: 100%;
    border-radius: var(--radius-xl);
    flex-direction: column;
    align-items: stretch;
  }
  .learn-tabs .tab {
    text-align: center;
  }
}

/* ---- Tab Panels ---- */
.learn-panel {
  animation: panelFadeIn 0.4s var(--ease-out) both;
}

@keyframes panelFadeIn {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---- Phase Timeline ---- */
.phase-timeline {
  margin-bottom: var(--space-12);
}

.phase-timeline__bar {
  display: flex;
  border-radius: var(--radius-full);
  overflow: hidden;
  height: 40px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
}

.phase-timeline__segment {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xs);
  font-weight: 600;
  color: white;
  transition: all var(--transition-base);
  cursor: default;
  position: relative;
  overflow: hidden;
}

.phase-timeline__segment span {
  position: relative;
  z-index: 1;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
  white-space: nowrap;
}

.phase-timeline__segment--rose {
  background: var(--color-primary);
}

.phase-timeline__segment--amber {
  background: var(--color-amber);
}

.phase-timeline__segment--sage {
  background: var(--color-sage);
}

.phase-timeline__segment--lavender {
  background: var(--color-lavender);
}

.phase-timeline__segment:hover {
  filter: brightness(1.1);
  flex-grow: 0.05;
}

@media (max-width: 600px) {
  .phase-timeline__segment span {
    font-size: 0.65rem;
  }
  .phase-timeline__bar {
    height: 32px;
  }
}

/* ---- Phase Detail Cards ---- */
.phase-card {
  background: var(--bg-surface-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  margin-bottom: var(--space-8);
  position: relative;
  overflow: hidden;
  transition: all var(--transition-base);
  border-left: 4px solid transparent;
  box-shadow: 0 8px 30px rgba(29, 24, 22, 0.03), 0 1px 3px rgba(29, 24, 22, 0.02);
}

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

.phase-card--rose {
  border-left-color: var(--color-primary);
}

.phase-card--amber {
  border-left-color: var(--color-amber);
}

.phase-card--sage {
  border-left-color: var(--color-sage);
}

.phase-card--lavender {
  border-left-color: var(--color-lavender);
}

.phase-card.bg-grad-rose { background: var(--gradient-rose); }
.phase-card.bg-grad-follicular { background: var(--gradient-follicular); }
.phase-card.bg-grad-ovulation { background: var(--gradient-ovulation); }
.phase-card.bg-grad-luteal { background: var(--gradient-luteal); }

/* Phase card subtle bg tints */
.phase-card--rose::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 200px;
  height: 100%;
  background: linear-gradient(90deg, var(--color-blush-bg), transparent);
  pointer-events: none;
}

.phase-card--amber::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 200px;
  height: 100%;
  background: linear-gradient(90deg, var(--color-amber-bg), transparent);
  pointer-events: none;
}

.phase-card--sage::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 200px;
  height: 100%;
  background: linear-gradient(90deg, var(--color-sage-bg), transparent);
  pointer-events: none;
}

.phase-card--lavender::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 200px;
  height: 100%;
  background: linear-gradient(90deg, var(--color-lavender-bg), transparent);
  pointer-events: none;
}

.phase-card__header {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
  position: relative;
  z-index: 1;
}

.phase-card__icon {
  flex-shrink: 0;
}

.phase-card__meta {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.phase-card__title {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 600;
}

.phase-card__body {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: var(--space-8);
  position: relative;
  z-index: 1;
}

.phase-card__content p {
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  color: var(--text-secondary);
  margin-bottom: var(--space-4);
}

.phase-card__content p:last-child {
  margin-bottom: 0;
}

.phase-card__tips {
  background: var(--bg-secondary);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
}

.phase-card__tips-title {
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: 600;
  margin-bottom: var(--space-4);
}

.phase-card__tips-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.phase-card__tips-list li {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
  padding-left: var(--space-5);
  position: relative;
}

.phase-card__tips-list li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-weight: 700;
  font-size: var(--text-lg);
  line-height: 1.4;
}

/* Phase card responsive */
@media (max-width: 768px) {
  .phase-card {
    padding: var(--space-6);
  }
  .phase-card__body {
    grid-template-columns: 1fr;
  }
  .phase-card__title {
    font-size: var(--text-xl);
  }
}

/* ---- Common Concerns Accordion Enhancements ---- */
.accordion__trigger-text {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.accordion__emoji {
  font-size: var(--text-xl);
  flex-shrink: 0;
}

.concern-body {
  padding-bottom: var(--space-4);
}

.concern-body > p {
  margin-bottom: var(--space-4);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  color: var(--text-secondary);
}

.concern-section {
  margin-bottom: var(--space-5);
}

.concern-section h5 {
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-2);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.concern-section p {
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  color: var(--text-secondary);
  margin-bottom: var(--space-2);
}

.concern-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.concern-list li {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
  padding-left: var(--space-5);
  position: relative;
}

.concern-list li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-weight: 600;
}

.concern-list li strong {
  color: var(--text-primary);
  font-weight: 600;
}

.concern-reassurance {
  background: var(--color-amber-bg);
  border-radius: var(--radius-lg);
  padding: var(--space-4) var(--space-5);
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
  margin-top: var(--space-4);
  border-left: 3px solid var(--color-amber);
}

/* ---- Myths vs Facts Cards ---- */
.myths-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
}

.myth-card {
  perspective: 1000px;
  cursor: pointer;
  height: 300px; /* Stable fixed height for 3D rotation */
}

.myth-card__inner {
  position: relative;
  width: 100%;
  height: 100%;
  transition: transform 0.8s var(--ease-spring);
  transform-style: preserve-3d;
}

.myth-card.flipped .myth-card__inner {
  transform: rotateY(180deg);
}

.myth-card__front,
.myth-card__back {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  justify-content: center;
  border: 1.5px solid var(--border-color);
  transition: all var(--transition-base);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.015);
}

.myth-card:hover .myth-card__front {
  border-color: rgba(212, 114, 106, 0.2);
  box-shadow: 0 10px 25px -5px rgba(212, 114, 106, 0.06), 0 4px 10px -2px rgba(0, 0, 0, 0.02);
}

.myth-card:hover .myth-card__back {
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05);
}

.myth-card__front {
  background: var(--bg-surface-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  position: relative;
  overflow: hidden;
  transform: rotateY(0deg); /* Safari compatibility fix for backface-visibility */
}
.myth-card__front::before {
  content: '?';
  position: absolute;
  bottom: -30px;
  right: 15px;
  font-size: 160px;
  font-weight: 700;
  font-family: var(--font-heading);
  color: var(--color-primary-bg);
  opacity: 0.25;
  pointer-events: none;
  line-height: 1;
}

.myth-card__back {
  background: var(--bg-surface-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transform: rotateY(180deg);
  border-left: 4px solid var(--color-primary); /* Default red/rose border for myths */
}
#myth-4 .myth-card__back {
  border-left: 4px solid var(--color-sage); /* Sage green border for facts */
}
/* If the statement inside is a myth, highlight with primary color, otherwise sage */
.myth-card.flipped .myth-card__back {
  box-shadow: 0 8px 20px -4px rgba(0, 0, 0, 0.04);
}

.myth-card__label {
  display: inline-flex;
  align-items: center;
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  width: fit-content;
  margin-bottom: var(--space-4);
}

.myth-card__label--myth {
  background: rgba(220, 53, 69, 0.1);
  color: #dc3545;
}

.myth-card__label--fact {
  background: rgba(40, 167, 69, 0.1);
  color: #28a745;
}

.myth-card__label--fact-front {
  background: var(--color-amber-bg);
  color: var(--color-amber);
}

.myth-card__label--myth-back {
  background: rgba(220, 53, 69, 0.1);
  color: #dc3545;
}

.myth-card__statement {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--text-primary);
  line-height: var(--leading-snug);
  margin-bottom: var(--space-4);
}

.myth-card__hint {
  font-size: var(--text-xs);
  color: var(--text-muted);
  font-weight: 500;
  margin-top: auto;
}

.myth-card__truth {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}

/* Myths grid responsive */
@media (max-width: 768px) {
  .myths-grid {
    grid-template-columns: 1fr;
  }
  .myth-card {
    min-height: 240px;
  }
  .myth-card__inner {
    min-height: 240px;
  }
}

@media (max-width: 480px) {
  .myth-card__statement {
    font-size: var(--text-lg);
  }
}

/* ---- When to See a Doctor ---- */
.doctor-reassurance {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  background: var(--color-sage-bg);
  border: 1px solid rgba(168, 191, 160, 0.2);
  border-radius: var(--radius-2xl);
  padding: var(--space-6) var(--space-8);
  margin-bottom: var(--space-10);
}

.doctor-reassurance__icon {
  font-size: 2rem;
  flex-shrink: 0;
  line-height: 1;
}

.doctor-reassurance__text {
  font-size: var(--text-base);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}

.doctor-reassurance__text strong {
  color: var(--text-primary);
}

/* Warning Signs Grid */
.warning-signs-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
  margin-bottom: var(--space-12);
}

.warning-card {
  background: var(--bg-surface-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-2xl);
  padding: var(--space-6) var(--space-8);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  box-shadow: 0 8px 25px rgba(29, 24, 22, 0.02);
}

.warning-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--color-primary);
  border-radius: var(--radius-full);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.warning-card:hover {
  border-color: var(--border-color-hover);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.warning-card:hover::before {
  opacity: 1;
}

.warning-card__icon {
  font-size: 2rem;
  margin-bottom: var(--space-4);
  line-height: 1;
}

.warning-card__title {
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: 600;
  margin-bottom: var(--space-3);
}

.warning-card__desc {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}

/* Warning signs responsive */
@media (max-width: 768px) {
  .warning-signs-grid {
    grid-template-columns: 1fr;
  }
  .doctor-reassurance {
    padding: var(--space-5) var(--space-6);
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
}

/* ---- Doctor Visit Tips ---- */
.doctor-tips {
  background: var(--bg-surface-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-2xl);
  padding: var(--space-10);
  box-shadow: 0 8px 30px rgba(29, 24, 22, 0.03);
}

.doctor-tips__title {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 600;
  margin-bottom: var(--space-8);
  text-align: center;
}

.doctor-tips__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
}

.doctor-tips__item {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
}

.doctor-tips__number {
  width: 36px;
  height: 36px;
  min-width: 36px;
  border-radius: var(--radius-full);
  background: var(--color-primary-bg);
  color: var(--color-primary);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: var(--text-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.doctor-tips__item h5 {
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 600;
  margin-bottom: var(--space-1);
}

.doctor-tips__item p {
  font-size: var(--text-sm);
  color: var(--text-muted);
  line-height: var(--leading-relaxed);
}

@media (max-width: 768px) {
  .doctor-tips {
    padding: var(--space-6);
  }
  .doctor-tips__grid {
    grid-template-columns: 1fr;
  }
}

/* ---- Dark Theme Fine-tuning ---- */
[data-theme="dark"] .learn-hero {
  background: linear-gradient(180deg, rgba(232, 155, 149, 0.06) 0%, transparent 100%);
}

[data-theme="dark"] .learn-hero__title {
  background: linear-gradient(135deg, var(--color-primary), var(--color-lavender));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

[data-theme="dark"] .myth-card__label--myth {
  background: rgba(220, 53, 69, 0.15);
}

[data-theme="dark"] .myth-card__label--fact {
  background: rgba(40, 167, 69, 0.15);
}

[data-theme="dark"] .concern-reassurance {
  background: rgba(232, 184, 109, 0.08);
}

[data-theme="dark"] .doctor-reassurance {
  background: rgba(168, 191, 160, 0.08);
  border-color: rgba(168, 191, 160, 0.1);
}

/* ---- Smooth Scroll Anchor Offset ---- */
.phase-card[id],
.accordion__item[id],
.myth-card[id],
.warning-card[id] {
  scroll-margin-top: calc(var(--navbar-height) + var(--space-8));
}

@media (max-width: 480px) {
  .phase-card {
    padding: var(--space-4) !important;
  }
  .phase-tips {
    padding: var(--space-4) !important;
  }
  .myth-card {
    padding: var(--space-5) !important;
  }
  .warning-card {
    padding: var(--space-4) !important;
  }
  .doctor-reassurance {
    padding: var(--space-4) !important;
  }
  .doctor-tips {
    padding: var(--space-4) !important;
  }
}