/* ============================================================
   RESUME TIMELINE — Ajmal Mubarak Portfolio
   Clean left-spine vertical timeline
   ============================================================ */

#resume-section { padding: 80px 0 60px; }

/* ── Root container ─────────────────────────────────────── */
.tl-root {
  position: relative;
  max-width: 560px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Single continuous vertical line */
.tl-root::before {
  content: '';
  position: absolute;
  /* tl-left is 46px wide; its center = padding(20) + 23 = 43px from root left */
  left: 43px;
  top: 22px;
  bottom: 22px;
  width: 2px;
  background: linear-gradient(
    to bottom,
    transparent,
    rgba(16, 185, 129, 0.45) 8%,
    rgba(16, 185, 129, 0.45) 92%,
    transparent
  );
}

/* ── Timeline item ──────────────────────────────────────── */
.tl-item {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  margin-bottom: 28px;
  position: relative;
}
.tl-item:last-child { margin-bottom: 0; }

/* ── Left column (houses the dot on the line) ───────────── */
.tl-left {
  width: 46px;
  flex-shrink: 0;
  display: flex;
  justify-content: center;
  padding-top: 18px;   /* aligns dot vertically with card title area */
}

/* ── Node dot ───────────────────────────────────────────── */
.rm-node {
  width: 12px;
  height: 12px;
  background: #10b981;
  border-radius: 50%;
  flex-shrink: 0;
  position: relative;
  z-index: 2;
  box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.16),
              0 0 10px rgba(16, 185, 129, 0.22);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.rm-node:hover {
  transform: scale(1.35);
  box-shadow: 0 0 0 7px rgba(16, 185, 129, 0.13),
              0 0 16px rgba(16, 185, 129, 0.3);
}

/* ── Card ───────────────────────────────────────────────── */
.rm-card {
  flex: 1;
  min-width: 0;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(16, 185, 129, 0.14);
  border-radius: 12px;
  padding: 18px 22px;
  opacity: 0;
  transform: translateX(-12px);
  transition: opacity 0.45s ease, transform 0.45s ease,
              border-color 0.3s ease, box-shadow 0.3s ease;
}
.rm-card.rm-visible {
  opacity: 1;
  transform: translateX(0);
}
.rm-card:hover {
  border-color: rgba(16, 185, 129, 0.32);
  box-shadow: 0 4px 20px rgba(16, 185, 129, 0.09);
}

/* ── Card content ───────────────────────────────────────── */
.rm-date {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1.2px;
  color: #10b981;
  margin-bottom: 5px;
}
.rm-card h3 {
  font-size: 15px;
  font-weight: 700;
  color: #ffffff;
  margin: 0 0 3px;
  line-height: 1.3;
}
.rm-institution {
  display: block;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.42);
  margin-bottom: 9px;
}
.rm-desc {
  font-size: 12.5px;
  color: rgba(255, 255, 255, 0.58);
  line-height: 1.72;
  margin: 0;
}

/* ── Tags ───────────────────────────────────────────────── */
.rm-tags  { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 10px; }
.rm-tag {
  font-size: 9.5px;
  font-weight: 700;
  letter-spacing: 0.6px;
  text-transform: uppercase;
  color: #10b981;
  background: rgba(16, 185, 129, 0.07);
  border: 1px solid rgba(16, 185, 129, 0.2);
  border-radius: 3px;
  padding: 2px 7px;
}

/* hide residual category spans */
.rm-category { display: none; }

/* ── Responsive ─────────────────────────────────────────── */
@media (max-width: 480px) {
  .tl-left { width: 36px; }
  .tl-root::before { left: 38px; }
  .rm-card { padding: 14px 16px; }
  .rm-card h3 { font-size: 14px; }
}

/* ── Node pop keyframe ──────────────────────────────────── */
@keyframes rmNodePop {
  0%   { transform: scale(0.3); opacity: 0.4; }
  65%  { transform: scale(1.45); }
  100% { transform: scale(1); }
}