/* ─── History Page ──────────────────────────────────────────────────────── */
.page-history {
  min-height: 100vh;
  padding: var(--sp-6) 0 var(--sp-12);
}

/* Stats bar */
.history-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-3);
  margin-bottom: var(--sp-5);
}
@media (max-width: 640px) {
  .history-stats { grid-template-columns: repeat(2, 1fr); }
}
.history-stat-card {
  background: var(--clr-surface-2);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: var(--sp-4);
  text-align: center;
  transition: transform 0.2s, box-shadow 0.2s;
}
.history-stat-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.15);
}
.history-stat-card__value {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--clr-primary);
  line-height: 1.2;
  margin-bottom: var(--sp-1);
}
.history-stat-card__label {
  font-size: 0.75rem;
  color: var(--clr-text-3);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Actions row */
.history-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--sp-4);
  gap: var(--sp-3);
}

/* History list */
#history-list {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
}

.history-card {
  background: var(--clr-surface-2);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: var(--sp-4) var(--sp-5);
  transition: border-color 0.2s, transform 0.2s;
  cursor: default;
}
.history-card:hover {
  border-color: var(--clr-primary);
  transform: translateX(3px);
}
.history-card__header {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  margin-bottom: var(--sp-3);
}
.history-card__role-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-1);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 100px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.history-card__role-badge--sender {
  background: hsl(220,90%,60%,0.15);
  color: hsl(220,90%,65%);
  border: 1px solid hsl(220,90%,60%,0.3);
}
.history-card__role-badge--receiver {
  background: hsl(145,65%,45%,0.15);
  color: hsl(145,65%,50%);
  border: 1px solid hsl(145,65%,45%,0.3);
}
.history-card__date {
  font-size: 0.8rem;
  color: var(--clr-text-3);
  margin-left: auto;
}
.history-card__code {
  font-family: var(--font-mono, monospace);
  font-size: 0.8rem;
  color: var(--clr-text-2);
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  padding: 2px 8px;
  border-radius: var(--radius);
}
.history-card__files {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
}
.history-file-chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 4px 10px;
  font-size: 0.78rem;
  color: var(--clr-text-2);
  max-width: 240px;
  overflow: hidden;
}
.history-file-chip__name {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 1;
}
.history-file-chip__size {
  color: var(--clr-text-3);
  font-size: 0.72rem;
  flex-shrink: 0;
}

/* Empty state */
.history-empty {
  text-align: center;
  padding: var(--sp-16) var(--sp-4);
}
.history-empty__icon {
  font-size: 4rem;
  color: var(--clr-text-3);
  display: block;
  margin-bottom: var(--sp-4);
}
.history-empty__title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--clr-text);
  margin-bottom: var(--sp-2);
}
.history-empty__sub {
  color: var(--clr-text-3);
  font-size: 0.9rem;
  margin-bottom: var(--sp-6);
}
.history-empty__actions {
  display: flex;
  gap: var(--sp-3);
  justify-content: center;
  flex-wrap: wrap;
}