/* ─── Progress Steps ─────────────────────────────────────────────────────────── */
.steps {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  margin: 1.5rem 0;
  counter-reset: step;
}

.step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .35rem;
  position: relative;
  flex: 1;
}

.step::before {
  counter-increment: step;
  content: counter(step);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-border);
  color: var(--color-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1rem;
  border: 2px solid var(--color-border);
  position: relative;
  z-index: 1;
}

.step.active::before {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.step.done::before {
  content: "✓";
  background: var(--color-success);
  color: var(--color-white);
  border-color: var(--color-success);
}

.step-label {
  font-size: .9rem;
  color: var(--color-muted);
  text-align: center;
  max-width: 80px;
}

.step.active .step-label { color: var(--color-primary); font-weight: 600; }

.step:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 21px;
  left: calc(50% + 24px);
  width: calc(100% - 48px);
  height: 2px;
  background: var(--color-border);
}

.step.done:not(:last-child)::after { background: var(--color-success); }

/* ─── Tracking Code Badge ────────────────────────────────────────────────────── */
.tracking-badge {
  display: inline-block;
  background: var(--color-accent);
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
  border-radius: var(--radius);
  padding: .5rem 1.25rem;
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: 2px;
  font-family: 'Courier New', monospace;
}

/* ─── Institution Tags ───────────────────────────────────────────────────────── */
.institution-list {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin-top: .5rem;
}

.institution-tag {
  background: #eff6ff;
  color: var(--color-primary);
  border: 1px solid #bfdbfe;
  border-radius: 999px;
  padding: .3rem .9rem;
  font-size: .88rem;
  font-weight: 600;
}

/* ─── Expediente ─────────────────────────────────────────────────────────────── */
.expediente-section {
  border-top: 2px solid var(--color-border);
  padding-top: 1.25rem;
  margin-top: 1.25rem;
}

.expediente-section h3 {
  font-size: 1rem;
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: .05em;
  margin-bottom: .75rem;
}

/* ─── Upload Area ────────────────────────────────────────────────────────────── */
.upload-area {
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  text-align: center;
  cursor: pointer;
  transition: border-color .2s, background .2s;
}

.upload-area:hover, .upload-area.dragover {
  border-color: var(--color-primary);
  background: var(--color-accent);
}

.upload-area input[type="file"] { display: none; }

/* ─── Spinner ────────────────────────────────────────────────────────────────── */
.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid rgba(255,255,255,.4);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin .7s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ─── Responsive ─────────────────────────────────────────────────────────────── */
@media (max-width: 500px) {
  .step-label { display: none; }
}