/* ============================================================
   CCW Portal — Activity Timeline
   ============================================================ */

.ccw-timeline {
  display: flex;
  flex-direction: column;
  position: relative;
}

/* Vertical line */
.ccw-timeline::before {
  content: '';
  position: absolute;
  left: 19px;
  top: 0;
  bottom: 0;
  width: 2px;
  background-color: var(--color-border);
}

/* ── Timeline Item ────────────────────────────────────────── */
.ccw-timeline-item {
  display: flex;
  gap: var(--space-4);
  padding-bottom: var(--space-5);
  position: relative;
}

.ccw-timeline-item:last-child {
  padding-bottom: 0;
}

/* ── Icon ─────────────────────────────────────────────────── */
.ccw-timeline-item__icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background-color: var(--color-bg-tertiary);
  border: 2px solid var(--color-bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  position: relative;
  z-index: 1;
  color: var(--color-text-tertiary);
}

/* Icon type variants */
.ccw-timeline-item--created .ccw-timeline-item__icon {
  background-color: var(--color-status-new-bg);
  color: var(--color-status-new);
}

.ccw-timeline-item--status .ccw-timeline-item__icon {
  background-color: var(--color-info-bg);
  color: var(--color-info);
}

.ccw-timeline-item--assigned .ccw-timeline-item__icon {
  background-color: var(--color-warning-bg);
  color: var(--color-warning);
}

.ccw-timeline-item--escalated .ccw-timeline-item__icon {
  background-color: var(--color-error-bg);
  color: var(--color-error);
}

.ccw-timeline-item--resolved .ccw-timeline-item__icon {
  background-color: var(--color-success-bg);
  color: var(--color-success);
}

.ccw-timeline-item--comment .ccw-timeline-item__icon {
  background-color: var(--color-bg-tertiary);
  color: var(--color-text-secondary);
}

.ccw-timeline-item--system .ccw-timeline-item__icon {
  background-color: var(--color-bg-tertiary);
  color: var(--color-text-tertiary);
  width: 32px;
  height: 32px;
  margin: 4px;
}

/* ── Content ──────────────────────────────────────────────── */
.ccw-timeline-item__content {
  flex: 1;
  min-width: 0;
  padding-top: var(--space-2);
}

.ccw-timeline-item--system .ccw-timeline-item__content {
  padding-top: 6px;
}

.ccw-timeline-item__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-2);
  margin-bottom: var(--space-2);
}

.ccw-timeline-item__actor {
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
}

.ccw-timeline-item__action {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  font-weight: var(--font-weight-normal);
}

.ccw-timeline-item__time {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
  white-space: nowrap;
  flex-shrink: 0;
}

/* ── Status change display ────────────────────────────────── */
.ccw-timeline-item__status-change {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-2);
}

.ccw-timeline-item__status-arrow {
  color: var(--color-text-tertiary);
  font-size: var(--text-xs);
}

/* ── Comment body ─────────────────────────────────────────── */
.ccw-timeline-item__comment {
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-text-primary);
  line-height: var(--line-height-relaxed);
  margin-top: var(--space-2);
}

/* ── System event (compact) ───────────────────────────────── */
.ccw-timeline-item--system .ccw-timeline-item__content {
  display: flex;
  align-items: center;
}

.ccw-timeline-item--system .ccw-timeline-item__actor {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
  font-weight: var(--font-weight-normal);
}

/* ── Add comment form ─────────────────────────────────────── */
.ccw-timeline-compose {
  display: flex;
  gap: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
  margin-top: var(--space-2);
}

.ccw-timeline-compose__avatar {
  flex-shrink: 0;
}

.ccw-timeline-compose__form {
  flex: 1;
  min-width: 0;
}

.ccw-timeline-compose__textarea {
  width: 100%;
  padding: var(--space-3);
  font-size: var(--text-sm);
  font-family: var(--font-family);
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  resize: vertical;
  min-height: 80px;
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.ccw-timeline-compose__textarea:focus {
  border-color: var(--color-brand-primary);
  box-shadow: 0 0 0 3px rgba(26, 86, 219, 0.12);
}

.ccw-timeline-compose__actions {
  display: flex;
  justify-content: flex-end;
  margin-top: var(--space-2);
}

/* ── Loading state ────────────────────────────────────────── */
.ccw-timeline--loading .ccw-timeline::before {
  background: linear-gradient(
    to bottom,
    var(--color-border),
    transparent
  );
}