/* =========================================
   NéoMaman — Timeline Styles
   ========================================= */

.timeline {
  position: relative;
  padding: var(--space-xl) 0;
}

.timeline__header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

/* --- Horizontal Timeline Nav --- */
.timeline__nav {
  display: flex;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-md) 0 var(--space-2xl);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.timeline__nav::-webkit-scrollbar {
  display: none;
}

.timeline__period {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-xl);
  background: var(--bg-card);
  border: 2px solid transparent;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-sm);
  min-width: 140px;
  position: relative;
  overflow: hidden;
}

.timeline__period::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--period-color, var(--primary));
  transform: scaleX(0);
  transition: transform var(--transition-base);
}

.timeline__period:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.timeline__period:hover::after {
  transform: scaleX(1);
}

.timeline__period--active {
  border-color: var(--period-color, var(--primary));
  background: var(--bg-card);
  box-shadow: var(--shadow-md);
}

.timeline__period--active::after {
  transform: scaleX(1);
}

.timeline__period-icon {
  font-size: 28px;
  transition: transform var(--transition-bounce);
}

.timeline__period:hover .timeline__period-icon {
  transform: scale(1.15);
}

.timeline__period-label {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--text-heading);
  white-space: nowrap;
}

.timeline__period-sublabel {
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  white-space: nowrap;
}

/* Period-specific colors */
.timeline__period[data-period="day1-3"] {
  --period-color: var(--timeline-day1);
}

.timeline__period[data-period="day4-7"] {
  --period-color: var(--timeline-day4);
}

.timeline__period[data-period="week2"] {
  --period-color: var(--timeline-week2);
}

.timeline__period[data-period="month1"] {
  --period-color: var(--timeline-month1);
}

/* --- Connector Line between periods --- */
.timeline__connector {
  display: flex;
  align-items: center;
  align-self: center;
}

.timeline__connector-line {
  width: 32px;
  height: 2px;
  background: linear-gradient(90deg, var(--primary-light), var(--secondary-light));
  border-radius: 1px;
}

/* --- Period Content Section --- */
.timeline__content {
  animation: pageEnter var(--transition-slow) ease forwards;
}

.timeline__content-header {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
  padding: var(--space-lg);
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.timeline__content-icon {
  font-size: 36px;
}

.timeline__content-title {
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  color: var(--text-heading);
}

.timeline__content-desc {
  font-size: var(--text-base);
  color: var(--text-secondary);
  margin-top: var(--space-xs);
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .timeline__nav {
    justify-content: flex-start;
    padding: var(--space-sm) var(--space-md) var(--space-xl);
    gap: var(--space-sm);
  }

  .timeline__period {
    min-width: 120px;
    padding: var(--space-sm) var(--space-lg);
  }

  .timeline__period-icon {
    font-size: 24px;
  }

  .timeline__connector-line {
    width: 16px;
  }

  .timeline__content-header {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .timeline__period {
    min-width: 100px;
    padding: var(--space-sm) var(--space-md);
  }

  .timeline__period-label {
    font-size: var(--text-xs);
  }
}