/* ==========================================================================
   COMPONENT: Timeline — Editorial vertical history
   ========================================================================== */

/* ------------------------------------------------------------------
   ENTRY — Two-column row, alternating image side
   ------------------------------------------------------------------ */

.c-timeline__entry {
  background-color: var(--color-surface);
}

.c-timeline__entry.section {
  padding-block: var(--space-10);
}

/* Alternate with surface tint for visual rhythm */
.c-timeline__entry:nth-child(even):not(.c-timeline__entry--card) {
  background-color: var(--color-surface-container-low);
}

.c-timeline__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-10);
  align-items: start;
}

/* Image RIGHT (default for even milestones) — content first */
.c-timeline__entry--image-right .c-timeline__row {
  /* Default: content | media */
}

/* Image LEFT (odd milestones) — media first */
.c-timeline__entry--image-left .c-timeline__row {
  direction: rtl;
}

.c-timeline__entry--image-left .c-timeline__row > * {
  direction: ltr;
}

/* ------------------------------------------------------------------
   CONTENT — Year, title, text
   ------------------------------------------------------------------ */

.c-timeline__content {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.c-timeline__year {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 400;
  color: var(--color-primary);
  opacity: 0.6;
  line-height: 1;
}

.c-timeline__title {
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2vw, 1.75rem);
  font-weight: 400;
  line-height: 1.2;
  color: var(--color-on-surface);
}

.c-timeline__text {
  color: var(--color-on-surface-variant);
}

.c-timeline__text.prose p {
  font-size: var(--text-body-lg);
  line-height: var(--text-body-lg-lh);
}

/* ------------------------------------------------------------------
   MEDIA — Images and inline quote
   ------------------------------------------------------------------ */

.c-timeline__media {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  position: relative;
}

.c-timeline__img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

.c-timeline__img--secondary {
  width: 55%;
  align-self: flex-end;
  margin-top: calc(-1 * var(--space-8));
  position: relative;
  z-index: 2;
  box-shadow: var(--shadow-medium);
  background-color: var(--color-surface);
  padding: var(--space-1);
}

.c-timeline__img--secondary img {
  border-radius: calc(var(--radius-lg) - var(--space-1));
}

/* Inline quote — floating over or below images */
.c-timeline__inline-quote {
  background-color: var(--color-surface-container-lowest);
  padding: var(--space-5) var(--space-6);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-low);
  position: relative;
  margin-top: calc(-1 * var(--space-6));
  z-index: 3;
  align-self: center;
  max-width: 85%;
}

.c-timeline__inline-quote p {
  font-family: var(--font-display);
  font-size: var(--text-body-lg);
  font-style: italic;
  color: var(--color-primary);
  line-height: 1.4;
  margin: 0;
}

.c-timeline__inline-quote cite {
  display: block;
  margin-top: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-body-sm);
  font-style: normal;
  color: var(--color-on-surface-variant);
}

/* ------------------------------------------------------------------
   CARD VARIANT — Dark green background entry
   ------------------------------------------------------------------ */

.c-timeline__card {
  padding: var(--space-10);
}

.c-timeline__card-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
  align-items: center;
}

.c-timeline__entry--card .c-timeline__year {
  color: rgba(209, 250, 229, 0.50);
  opacity: 1;
}

.c-timeline__entry--card .c-timeline__title {
  color: #ECFDF5;
}

.c-timeline__entry--card .c-timeline__text,
.c-timeline__entry--card .c-timeline__text.prose p {
  color: rgba(209, 250, 229, 0.70);
}

.c-timeline__entry--card .c-timeline__img {
  border-radius: var(--radius-lg);
}

/* ------------------------------------------------------------------
   CHAPTER BREAK — Centered divider between timeline sections
   ------------------------------------------------------------------ */

.c-timeline__break {
  background-color: var(--color-surface);
  text-align: center;
}

.c-timeline__break .container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
}

.c-timeline__break-label {
  color: var(--color-on-surface-variant);
}

.c-timeline__break-headline {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 400;
  line-height: 1.2;
  color: var(--color-on-surface);
  max-width: 20ch;
}

.c-timeline__break-headline em {
  font-style: italic;
}

/* ------------------------------------------------------------------
   RESPONSIVE
   ------------------------------------------------------------------ */

@media (max-width: 1024px) {
  .c-timeline__row {
    gap: var(--space-8);
  }

  .c-timeline__card-inner {
    gap: var(--space-6);
  }
}

@media (max-width: 768px) {
  .c-timeline__row {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }

  /* Reset RTL on mobile */
  .c-timeline__entry--image-left .c-timeline__row {
    direction: ltr;
  }

  .c-timeline__media {
    max-width: 480px;
  }

  .c-timeline__card {
    padding: var(--space-6);
  }

  .c-timeline__card-inner {
    grid-template-columns: 1fr;
  }

  .c-timeline__inline-quote {
    max-width: 100%;
    margin-top: calc(-1 * var(--space-4));
  }

  .c-timeline__img--secondary {
    width: 50%;
    margin-top: calc(-1 * var(--space-6));
  }
}