* {
  box-sizing: border-box;
}

html,
body,
#root {
  margin: 0;
  height: 100%;
}

body {
  font-family: system-ui, -apple-system, 'Segoe UI', sans-serif;
  background: var(--page);
  color: var(--ink);
  font-size: 14px;
  line-height: 1.45;
}

a {
  color: inherit;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
}

.app {
  display: flex;
  flex-direction: column;
  height: 100%;
}

/* ---------- header ---------- */

.header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  border-bottom: 1px solid var(--hairline);
  background: var(--surface);
  position: sticky;
  top: 0;
  z-index: 20;
}

.header h1 {
  font-size: 15px;
  font-weight: 650;
  margin: 0;
}

.header .spacer {
  flex: 1;
}

.sync-status {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--ink-secondary);
  font-size: 12px;
  white-space: nowrap;
}

.sync-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--status-pass);
}

.sync-dot.stale {
  background: var(--status-running);
}

.sync-dot.error {
  background: var(--status-fail);
}

.error-banner {
  background: var(--chip-fail-bg);
  color: var(--status-fail-text);
  padding: 6px 16px;
  font-size: 12px;
  border-bottom: 1px solid var(--hairline);
  overflow-wrap: anywhere;
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 7px;
  border: 1px solid var(--border);
  background: var(--surface-raised);
  font-size: 14px;
}

.icon-btn:hover {
  border-color: var(--ink-muted);
}

/* ---------- layout ---------- */

.columns {
  display: flex;
  flex: 1;
  min-height: 0;
}

.pane {
  overflow-y: auto;
  overflow-x: hidden;
  min-width: 0;
  -webkit-overflow-scrolling: touch;
}

.pane-prs {
  flex: 3;
  border-right: 1px solid var(--hairline);
}

.pane-timeline {
  flex: 2;
  background: var(--surface);
}

.mobile-tabs {
  display: none;
}

@media (max-width: 899px) {
  .columns .pane {
    display: none;
    flex: 1;
  }

  .columns .pane.active {
    display: block;
  }

  .pane-prs {
    border-right: none;
  }

  .mobile-tabs {
    display: flex;
    border-top: 1px solid var(--hairline);
    background: var(--surface);
    padding-bottom: env(safe-area-inset-bottom);
  }

  .mobile-tabs button {
    flex: 1;
    padding: 10px 0 8px;
    font-size: 13px;
    color: var(--ink-muted);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
  }

  .mobile-tabs button.active {
    color: var(--accent);
    font-weight: 600;
  }

  .tab-badge {
    position: absolute;
    transform: translate(14px, -2px);
    background: var(--unread);
    color: #fff;
    font-size: 10px;
    font-weight: 600;
    border-radius: 8px;
    min-width: 16px;
    height: 16px;
    line-height: 16px;
    padding: 0 4px;
  }
}

/* ---------- filter tabs ---------- */

.filter-tabs {
  display: flex;
  gap: 6px;
  padding: 10px 16px 4px;
  flex-wrap: wrap;
}

.filter-tabs button {
  padding: 4px 10px;
  border-radius: 14px;
  border: 1px solid var(--border);
  color: var(--ink-secondary);
  font-size: 12px;
  background: var(--surface);
}

.filter-tabs button.active {
  background: var(--ink);
  color: var(--page);
  border-color: var(--ink);
}

/* ---------- PR cards ---------- */

.pr-list {
  padding: 8px 16px 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.repo-heading {
  margin: 10px 0 2px;
  font-size: 11px;
  font-weight: 650;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--ink-muted);
}

.pr-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
}

.pr-card .title-row {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.pr-card .pr-number {
  color: var(--ink-muted);
  font-size: 12px;
  white-space: nowrap;
}

.pr-card .pr-title {
  font-weight: 600;
  text-decoration: none;
  overflow-wrap: anywhere;
}

.pr-card .pr-title:hover {
  text-decoration: underline;
}

.pr-card .meta-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 4px;
  color: var(--ink-muted);
  font-size: 12px;
  flex-wrap: wrap;
}

.draft-tag {
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0 5px;
  font-size: 11px;
  color: var(--ink-secondary);
}

.branch {
  font-family: ui-monospace, monospace;
  font-size: 11px;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 220px;
  white-space: nowrap;
}

.unread-pill {
  background: var(--unread);
  color: #fff;
  border-radius: 9px;
  font-size: 11px;
  font-weight: 600;
  padding: 0 6px;
  line-height: 17px;
}

.chips-row {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 8px;
  flex-wrap: wrap;
}

/* ---------- category chips + dropdown ---------- */

.chip-wrap {
  position: relative;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 9px;
  border-radius: 13px;
  font-size: 12px;
  font-weight: 600;
  border: 1px solid transparent;
}

.chip .count {
  font-weight: 500;
  opacity: 0.85;
}

.chip-pass {
  background: var(--chip-pass-bg);
  color: var(--status-pass-text);
}

.chip-fail {
  background: var(--chip-fail-bg);
  color: var(--status-fail-text);
}

.chip-running {
  background: var(--chip-running-bg);
  color: var(--status-running-text);
}

.chip-running .chip-icon {
  animation: pulse 1.4s ease-in-out infinite;
}

.chip-pending {
  background: var(--chip-pending-bg);
  color: var(--ink-secondary);
}

.chip-skipped {
  background: var(--chip-skipped-bg);
  color: var(--ink-muted);
}

@keyframes pulse {
  50% {
    opacity: 0.35;
  }
}

.check-dropdown {
  display: none;
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  z-index: 30;
  min-width: 260px;
  max-width: min(340px, 90vw);
  max-height: 300px;
  overflow-y: auto;
  background: var(--surface-raised);
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: var(--shadow);
  padding: 6px;
}

.chip-wrap.align-right .check-dropdown {
  left: auto;
  right: 0;
}

.chip-wrap.open .check-dropdown {
  display: block;
}

@media (hover: hover) {
  .chip-wrap:hover .check-dropdown {
    display: block;
  }
}

.check-row {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 4px 6px;
  border-radius: 6px;
  font-size: 12px;
  color: var(--ink);
  text-decoration: none;
}

a.check-row:hover {
  background: var(--chip-pending-bg);
}

.check-row .check-name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.check-icon {
  font-size: 11px;
  width: 14px;
  text-align: center;
  flex: none;
}

.check-icon.pass {
  color: var(--status-pass-text);
}

.check-icon.fail {
  color: var(--status-fail-text);
}

.check-icon.running {
  color: var(--status-running-text);
  animation: pulse 1.4s ease-in-out infinite;
}

.check-icon.pending,
.check-icon.skipped {
  color: var(--ink-muted);
}

/* ---------- review badge ---------- */

.review-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 12px;
  padding: 3px 9px;
  border-radius: 13px;
  border: 1px solid var(--border);
  color: var(--ink-secondary);
}

.review-badge.outstanding {
  border-color: var(--status-running);
  color: var(--status-running-text);
}

.review-badge.addressed {
  border-color: var(--status-pass);
  color: var(--status-pass-text);
}

.verdict {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  font-size: 11px;
  padding: 2px 7px;
  border-radius: 11px;
}

.verdict.approved {
  background: var(--chip-pass-bg);
  color: var(--status-pass-text);
}

.verdict.changes {
  background: var(--chip-fail-bg);
  color: var(--status-fail-text);
}

/* ---------- timeline ---------- */

.timeline-head {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px 6px;
  position: sticky;
  top: 0;
  background: var(--surface);
  z-index: 10;
}

.timeline-head h2 {
  font-size: 13px;
  font-weight: 650;
  margin: 0;
  flex: 1;
}

.timeline-head button {
  font-size: 12px;
  color: var(--ink-secondary);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 3px 9px;
}

.timeline-head button.active {
  background: var(--ink);
  color: var(--page);
  border-color: var(--ink);
}

.timeline-list {
  padding: 0 8px 24px;
}

.tl-group {
  margin: 10px 6px 0;
}

.tl-group-head {
  display: flex;
  align-items: baseline;
  gap: 6px;
  font-size: 12px;
  color: var(--ink-secondary);
  padding: 0 6px 2px;
  flex-wrap: wrap;
}

.tl-group-head .actor {
  font-weight: 650;
  color: var(--ink);
}

.tl-group-head a {
  color: var(--ink-secondary);
  text-decoration: none;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 100%;
}

.tl-group-head a:hover {
  text-decoration: underline;
}

.tl-item {
  display: flex;
  gap: 8px;
  padding: 6px 6px;
  border-radius: 8px;
  cursor: pointer;
  align-items: flex-start;
}

.tl-item:hover {
  background: var(--chip-pending-bg);
}

.tl-item .dot {
  flex: none;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-top: 6px;
  background: transparent;
  border: 1px solid transparent;
}

.tl-item.unread .dot {
  background: var(--unread);
}

.tl-reply-ctx {
  font-size: 12px;
  color: var(--ink-muted);
  border-left: 2px solid var(--hairline);
  padding-left: 7px;
  margin: 2px 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  overflow-wrap: anywhere;
}

.tl-reply-ctx .actor {
  font-weight: 600;
}

.tl-item .body {
  color: var(--ink-secondary);
  font-size: 13px;
  overflow-wrap: anywhere;
}

.tl-item.unread .body {
  color: var(--ink);
}

.tl-kind {
  font-size: 11px;
  color: var(--ink-muted);
}

.tl-kind .path {
  font-family: ui-monospace, monospace;
}

.tl-review-state {
  font-weight: 600;
}

.tl-review-state.approved {
  color: var(--status-pass-text);
}

.tl-review-state.changes {
  color: var(--status-fail-text);
}

.load-more {
  display: block;
  margin: 12px auto;
  padding: 5px 14px;
  border: 1px solid var(--border);
  border-radius: 14px;
  color: var(--ink-secondary);
  font-size: 12px;
}

.empty-note {
  color: var(--ink-muted);
  text-align: center;
  padding: 32px 16px;
  font-size: 13px;
}