/* Alumni fellowship timeline — scoped hero (reference: programme card grid) */

.alumni-timeline-hero {
  --alumni-ref-gold: #a07a10;
  --alumni-ref-gold-lt: #c8981a;
  --alumni-ref-blue: #2277b8;
  --alumni-ref-blue-lt: #3a9ad9;
  --alumni-ref-green: #2e7a45;
  --alumni-ref-green-lt: #3d9e5a;
  --alumni-ref-red: #b82222;
  --alumni-ref-red-lt: #d93a3a;
  --alumni-ref-bg: #f7f5f0;
  --alumni-ref-text: #1a1a1a;
  --alumni-ref-card: #ffffff;
  --alumni-ref-radius: 14px;
  --alumni-ref-shadow: 0 4px 24px rgba(0, 0, 0, 0.09);

  font-family: "DM Sans", var(--primary-font, "Inter", sans-serif);
  background: transparent;
  color: var(--alumni-ref-text);
  padding-top: 1rem;
  padding-bottom: 0;
  min-height: 0;
  display: block;
}

/* Grid timeline */
.alumni-timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
}

.alumni-timeline::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 10%;
  right: 10%;
  height: 3px;
  background: linear-gradient(
    to right,
    var(--alumni-ref-gold) 0%,
    var(--alumni-ref-gold) 25%,
    var(--alumni-ref-blue) 25%,
    var(--alumni-ref-blue) 50%,
    var(--alumni-ref-green) 50%,
    var(--alumni-ref-green) 75%,
    var(--alumni-ref-red) 75%,
    var(--alumni-ref-red) 100%
  );
  opacity: 0.18;
  z-index: 0;
  pointer-events: none;
}

.alumni-phase {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 0;
  opacity: 0;
  transform: translateY(28px);
}

.alumni-timeline-hero.is-visible .alumni-phase {
  animation: alumni-fade-up 0.55s ease forwards;
}

.alumni-timeline-hero.is-visible .alumni-phase:nth-child(1) {
  animation-delay: 0.05s;
}
.alumni-timeline-hero.is-visible .alumni-phase:nth-child(2) {
  animation-delay: 0.18s;
}
.alumni-timeline-hero.is-visible .alumni-phase:nth-child(3) {
  animation-delay: 0.31s;
}
.alumni-timeline-hero.is-visible .alumni-phase:nth-child(4) {
  animation-delay: 0.44s;
}

@keyframes alumni-fade-up {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Period pill */
.alumni-period {
  display: inline-block;
  align-self: flex-start;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 5px 14px;
  border-radius: 999px;
  color: #fff;
  margin-bottom: 10px;
  position: relative;
  z-index: 2;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.18);
}

/* Card block (not Bootstrap .card) */
.alumni-phase-card {
  background: var(--alumni-ref-card);
  border-radius: var(--alumni-ref-radius);
  padding: 22px 20px 20px;
  box-shadow: var(--alumni-ref-shadow);
  border-width: 2px;
  border-style: solid;
  flex: 1;
  position: relative;
  overflow: hidden;
  transition: transform 0.22s ease, box-shadow 0.22s ease;
}

.alumni-phase-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 5px;
  border-radius: var(--alumni-ref-radius) var(--alumni-ref-radius) 0 0;
}

.alumni-phase-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.13);
}

.alumni-prog-title {
  font-family: "Playfair Display", var(--alt-font, Georgia, serif);
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 14px;
  padding-bottom: 12px;
  border-bottom: 1.5px solid;
}

.alumni-stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.alumni-stats li {
  display: flex;
  align-items: flex-start;
  gap: 9px;
  font-size: 0.87rem;
  line-height: 1.4;
  color: #333;
}

.alumni-stats li::before {
  content: "•";
  font-size: 1.1rem;
  flex-shrink: 0;
  margin-top: -1px;
}

/* Themes */
.alumni-phase--gold .alumni-period {
  background: var(--alumni-ref-gold);
}
.alumni-phase--gold .alumni-phase-card {
  border-color: var(--alumni-ref-gold);
}
.alumni-phase--gold .alumni-phase-card::before {
  background: var(--alumni-ref-gold);
}
.alumni-phase--gold .alumni-prog-title {
  color: var(--alumni-ref-gold);
  border-color: #e8d48a;
}
.alumni-phase--gold .alumni-stats li::before {
  color: var(--alumni-ref-gold-lt);
}

.alumni-phase--blue .alumni-period {
  background: var(--alumni-ref-blue);
}
.alumni-phase--blue .alumni-phase-card {
  border-color: var(--alumni-ref-blue);
}
.alumni-phase--blue .alumni-phase-card::before {
  background: var(--alumni-ref-blue);
}
.alumni-phase--blue .alumni-prog-title {
  color: var(--alumni-ref-blue);
  border-color: #a8d4f0;
}
.alumni-phase--blue .alumni-stats li::before {
  color: var(--alumni-ref-blue-lt);
}

.alumni-phase--green .alumni-period {
  background: var(--alumni-ref-green);
}
.alumni-phase--green .alumni-phase-card {
  border-color: var(--alumni-ref-green);
}
.alumni-phase--green .alumni-phase-card::before {
  background: var(--alumni-ref-green);
}
.alumni-phase--green .alumni-prog-title {
  color: var(--alumni-ref-green);
  border-color: #9adbb0;
}
.alumni-phase--green .alumni-stats li::before {
  color: var(--alumni-ref-green-lt);
}

.alumni-phase--red .alumni-period {
  background: var(--alumni-ref-red);
}
.alumni-phase--red .alumni-phase-card {
  border-color: var(--alumni-ref-red);
}
.alumni-phase--red .alumni-phase-card::before {
  background: var(--alumni-ref-red);
}
.alumni-phase--red .alumni-prog-title {
  color: var(--alumni-ref-red);
  border-color: #f0a8a8;
}
.alumni-phase--red .alumni-stats li::before {
  color: var(--alumni-ref-red-lt);
}

/* Tablet */
@media (max-width: 900px) {
  .alumni-timeline {
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
  }

  .alumni-timeline::before {
    display: none;
  }
}

/* Mobile */
@media (max-width: 520px) {
  .alumni-timeline-hero {
    padding-top: 0.875rem;
    padding-bottom: 0;
  }

  .alumni-timeline {
    grid-template-columns: 1fr;
    gap: 24px;
  }
}