:root{
  --step-size: clamp(2rem, 3.5vw, 2.5rem);
  --line-thickness: 2px;
  --gap: 1rem;
  --radius: 999px;
  --color-bg: #f7f7fb;
  --color-border: #e6e7ee;
  --color-primary: #1442a0;
  --color-complete: #10b981;
  --color-muted: #9aa0b4;
  --text-primary: #0f172a;
  --text-muted: #6b7280;
  --transition-speed: 240ms;
}

.steps {
  padding: 1rem;
}

.steps-list {
  display: flex;
  gap: var(--gap);
  align-items: start;
  list-style: none;
  padding: 0;
  margin: 0;
  counter-reset: step;
}

.step {
  position: relative;
  display: flex;
  gap: .75rem;
  align-items: flex-start;
  cursor: pointer;
  outline: none;
  min-width: 10rem;
  max-width: 15rem;
  counter-increment: step;
}

.step-indicator {
  width: var(--step-size);
  height: var(--step-size);
  min-width: var(--step-size);
  border-radius: var(--radius);
  flex-shrink: 0;
  display: grid;
  place-items: center;
  font-weight: 600;
  font-size: .9rem;
  transition: transform var(--transition-speed) ease, background-color var(--transition-speed) ease, border-color var(--transition-speed) ease;
  box-sizing: border-box;
  border: var(--line-thickness) solid var(--color-border);
  background: white;
  color: var(--text-muted);
}

.step[data-state="upcoming"] .step-indicator::before{
  content: counter(step);
}

.step-body { display: flex; flex-direction: column; }
.step-title { color: var(--text-primary); font-weight: 600; }
.step-desc { color: var(--text-muted); font-size: .9rem; margin-top: 2px; }

.step:not(:last-child)::after {
  content: "";
  position: absolute;
  top: calc(var(--step-size) / 2 - var(--line-thickness) / 2);
  left: calc(100% + (var(--gap) - var(--line-thickness)) / 2);
  right: calc(-1 * (var(--gap) - var(--line-thickness)) / 2);
  height: var(--line-thickness);
  background: linear-gradient(90deg, var(--color-complete) 0%, var(--color-border) 100%);
  border-radius: 2px;
  transition: background var(--transition-speed) ease;
  z-index: -1;
}

.step[data-state="complete"] .step-indicator {
  background: color-mix(in srgb, var(--color-complete) 20%, white);
  border-color: var(--color-complete);
  color: var(--color-complete);
  transform: scale(1.03);
}
.step[data-state="complete"] .step-indicator::before {
  content: "✓";
  font-size: .9rem;
}

.step[data-state="current"] .step-indicator {
  background: linear-gradient(180deg, color-mix(in srgb, var(--color-primary) 10%, white), white);
  border-color: var(--color-primary);
  color: var(--color-primary);
  box-shadow: 0 4px 12px color-mix(in srgb, var(--color-primary) 10%, transparent);
  transform: translateY(-4px);
}
.step[data-state="current"] .step-title { color: var(--color-primary); }

.step[data-state="upcoming"] .step-indicator {
  background: white;
  border-color: var(--color-border);
  color: var(--text-muted);
}

.step[data-state="complete"] + .step::after {
  background: linear-gradient(90deg, var(--color-complete) 100%, var(--color-border) 100%);
}

.step:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--color-primary) 20%, white);
  outline-offset: 4px;
  border-radius: 8px;
}

@media (max-width:640px){
  .steps-list { gap: .5rem; overflow-x: auto; padding-bottom: .5rem; }
  .step { min-width: 8.5rem; }
}