:root {
  --color-canvas-default: #ffffff;
  --color-canvas-subtle: #f6f8fa;
  --color-border-default: #d0d7de;
  --color-border-muted: #d8dee4;
  --color-fg-default: #24292f;
  --color-fg-muted: #57606a;
  --color-accent-fg: #0969da;
  --color-danger-fg: #cf222e;
  --color-success-fg: #1a7f37;
  --color-attention-fg: #9a6700;
  --color-done-fg: #8250df;
  
  --header-bg: #f6f8fa;
  --header-text: #24292f;
  
  --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
}

* {
  box-sizing: border-box;
}

body {
  font-family: var(--font-stack);
  margin: 0;
  padding: 0;
  color: var(--color-fg-default);
  background-color: var(--color-canvas-default);
  font-size: 14px;
  line-height: 1.5;
}

a {
  color: var(--color-accent-fg);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* Header */
.gh-header {
  background-color: var(--color-canvas-subtle);
  padding: 12px 24px; /* Increased padding slightly for look */
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--color-border-default);
  height: 62px;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.hamburger {
  background: none;
  border: none;
  font-size: 18px;
  color: var(--color-fg-muted);
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 6px;
  border: 1px solid var(--color-border-default);
}

.logo {
  color: var(--color-fg-default);
  display: flex;
  align-items: center;
}

.logo:hover {
  opacity: 0.7;
}

.breadcrumbs {
  display: flex;
  align-items: center;
  font-size: 14px;
  color: var(--color-fg-default);
}

.repo-owner {
  color: var(--color-fg-default);
}

.repo-name {
  font-weight: 600;
  color: var(--color-fg-default);
}

.separator {
  margin: 0 4px;
  color: var(--color-fg-muted);
}

.lock-icon {
  margin-left: 8px;
  color: var(--color-fg-muted);
  font-size: 12px;
  background: #eff1f3; /* subtle bg */
  padding: 2px 6px;
  border-radius: 10px;
  border: 1px solid var(--color-border-muted);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.search-bar {
  display: flex;
}

.search-input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  border: 1px solid var(--color-border-default);
  border-radius: 6px;
  background: var(--color-canvas-default);
  width: 260px;
  height: 32px;
  padding: 0 8px;
  box-shadow: inset 0 1px 2px rgba(0,0,0,0.05); /* subtle inner shadow */
}

.search-input-wrapper i {
  color: var(--color-fg-muted);
  font-size: 12px;
  margin-right: 8px;
}

.search-input-wrapper input {
  border: none;
  outline: none;
  background: transparent;
  width: 100%;
  font-size: 14px;
  color: var(--color-fg-default);
}

.search-key {
  border: 1px solid var(--color-border-muted);
  border-radius: 4px;
  padding: 0 4px;
  font-size: 10px;
  color: var(--color-fg-muted);
  font-family: monospace;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.action-item {
  color: var(--color-fg-default);
  cursor: pointer;
  padding: 4px;
  display: flex;
  align-items: center;
  gap: 4px;
  border: 1px solid var(--color-border-default);
  border-radius: 6px;
  height: 32px;
  padding: 0 8px;
  background: #fff;
}
.action-item:hover {
  background-color: #f3f4f6;
}

.avatar-wrapper {
  border: none;
  padding: 0;
  background: none;
}
.avatar-small {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 1px solid var(--color-border-muted);
}

/* Repo Nav */
.repo-nav-container {
  background-color: var(--color-canvas-subtle);
  border-bottom: 1px solid var(--color-border-default);
  padding: 0 24px; /* Align with header padding */
}

.repo-nav {
  display: flex;
  gap: 8px;
  overflow-x: auto;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px; /* Adjusted padding */
  color: var(--color-fg-default);
  font-size: 14px;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
}

.nav-item:hover {
  background-color: rgba(208, 215, 222, 0.32);
  text-decoration: none;
  border-radius: 6px; /* modern github hover */
  border-bottom: none; /* remove border on hover if using radius */
}

/* Active tab logic differs slightly in new UI */
.nav-item.active {
  font-weight: 600;
  border-bottom: 2px solid #fd8c73; /* Orange line for PRs/Issues usually, code is transparent. Screenshot shows active. */
  border-radius: 0;
}
.nav-item.active:hover {
  background: none;
}

.nav-item i {
  color: var(--color-fg-muted);
}
.nav-item.active i {
  color: var(--color-fg-default);
}

.counter {
  background-color: rgba(175, 184, 193, 0.2);
  color: var(--color-fg-default);
  border-radius: 2em;
  padding: 0 6px;
  font-size: 12px;
  font-weight: 500;
}

/* Container */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 24px;
}

/* PR Header */
.pr-header {
  margin-bottom: 24px;
}

.pr-title-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 8px;
}

.pr-title {
  font-size: 32px;
  font-weight: 400;
  margin: 0;
  line-height: 1.25;
}

.title-text {
  color: var(--color-fg-default);
}

.pr-number {
  color: var(--color-fg-muted);
  font-weight: 300;
}

.pr-actions {
  display: flex;
  gap: 8px;
}

.btn {
  display: inline-block;
  padding: 5px 16px;
  font-size: 14px;
  font-weight: 500;
  line-height: 20px;
  white-space: nowrap;
  vertical-align: middle;
  cursor: pointer;
  user-select: none;
  border: 1px solid var(--color-border-default);
  border-radius: 6px;
  appearance: none;
  color: var(--color-fg-default);
  background-color: #f6f8fa;
  box-shadow: 0 1px 0 rgba(27,31,36,0.04);
  transition: .2s cubic-bezier(0.3, 0, 0.5, 1);
  transition-property: color, background-color, border-color;
}
.btn:hover {
  background-color: #f3f4f6;
  border-color: var(--color-border-muted);
}
.btn-sm {
  padding: 3px 12px;
  font-size: 12px;
}
.btn-primary {
  color: #ffffff;
  background-color: #2da44e;
  border-color: rgba(27,31,36,0.15);
}
.btn-block {
  display: block;
  width: 100%;
  text-align: center;
}
.btn-outline {
  color: var(--color-fg-muted);
  background-color: transparent;
}

.pr-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--color-fg-muted);
  font-size: 14px;
  flex-wrap: wrap;
}

.badge-merged {
  background-color: var(--color-done-fg);
  color: #ffffff;
  border-radius: 2em;
  padding: 4px 12px;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.branch-name {
  background-color: rgba(175, 184, 193, 0.2);
  color: var(--color-fg-default);
  border-radius: 6px;
  padding: 2px 6px;
  font-family: monospace;
  font-size: 85%;
}

/* Tabs */
.tab-nav {
  border-bottom: 1px solid var(--color-border-default);
  margin-bottom: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0; /* Sticky effect like real github */
  background: var(--color-canvas-default);
  z-index: 10;
}

.tab-container {
  display: flex;
  gap: 24px; /* Spacing between tabs */
}

.tab-item {
  padding: 12px 8px;
  color: var(--color-fg-default);
  display: flex;
  align-items: center;
  gap: 8px;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
}
.tab-item:hover {
  text-decoration: none;
  border-bottom-color: var(--color-border-muted);
}

.tab-item.active {
  font-weight: 600;
  border-bottom-color: #fd8c73;
}
.tab-item.active i {
  color: var(--color-fg-default);
}
.tab-item i {
  color: var(--color-fg-muted);
}

.diff-stats {
  font-size: 12px;
  display: flex;
  align-items: center;
  gap: 4px;
}
.text-green { color: var(--color-success-fg); }
.text-red { color: var(--color-danger-fg); }

.diff-bar {
  display: flex;
  gap: 1px;
}
.bar-green { width: 4px; height: 10px; background-color: var(--color-success-fg); }
.bar-red { width: 4px; height: 10px; background-color: var(--color-danger-fg); }
.bar-neutral { width: 4px; height: 10px; background-color: #e1e4e8; }

/* Layout Grid */
.layout-grid {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 32px;
}

@media (max-width: 768px) {
  .layout-grid {
    grid-template-columns: 1fr;
  }
}

/* Timeline */
.timeline-column {
  position: relative;
  padding-bottom: 40px;
}

.timeline-column::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 31px; /* Align with avatar center */
  width: 2px;
  background-color: var(--color-border-default);
  z-index: 0;
}

.timeline-item {
  display: flex;
  gap: 16px;
  position: relative;
  margin-bottom: 16px;
  z-index: 1;
}

.timeline-avatar {
  flex-shrink: 0;
  width: 64px; /* Space for avatar */
  display: flex;
  justify-content: center;
  padding-top: 4px;
}

.timeline-avatar img {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: var(--color-canvas-default);
  border: 1px solid var(--color-border-muted); /* Ensure circle edge visible over line */
}

.bot-avatar-wrapper {
  width: 40px;
  height: 40px;
  border-radius: 6px; /* Bot avatars are often square-ish with rounded corners or just different */
  background: linear-gradient(135deg, #f0f4ff, #e6eeff);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border-muted);
}
.bot-avatar-wrapper i {
  color: #448ef6; /* Sparkles blue */
}

.timeline-content {
  flex-grow: 1;
  min-width: 0;
}

/* Box Style (Comments) */
.box {
  border: 1px solid var(--color-border-default);
  border-radius: 6px;
  background-color: var(--color-canvas-default);
}

.box-header {
  background-color: var(--color-canvas-subtle);
  padding: 8px 16px;
  border-bottom: 1px solid var(--color-border-default);
  border-top-left-radius: 6px;
  border-top-right-radius: 6px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--color-fg-muted);
}

.box-header .author {
  font-weight: 600;
  color: var(--color-fg-default);
}

.bot-badge {
  border: 1px solid var(--color-border-default);
  border-radius: 2em;
  padding: 1px 6px;
  font-size: 12px;
  color: var(--color-fg-muted);
  background-color: #eff1f3;
}

.box-actions {
  margin-left: auto;
  cursor: pointer;
}

.box-body {
  padding: 16px;
  color: var(--color-fg-default);
  font-size: 14px;
  overflow-wrap: break-word;
}
.box-body p {
  margin-top: 0;
  margin-bottom: 16px;
}
.box-body p:last-child {
  margin-bottom: 0;
}

.reactions {
  margin-top: 12px;
  display: flex;
  gap: 4px;
}

.reaction-btn {
  background: #fff;
  border: 1px solid var(--color-border-default);
  border-radius: 2em;
  padding: 2px 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
}
.reaction-btn:hover {
  background-color: #f3f4f6;
}

/* Markdown Styles inside bot comment */
.markdown-body h2 {
  font-size: 1.5em;
  border-bottom: 1px solid var(--color-border-muted);
  padding-bottom: 0.3em;
  margin-top: 24px;
  margin-bottom: 16px;
  font-weight: 600;
}
.markdown-body h2:first-child {
  margin-top: 0;
}
.markdown-body h3 {
  font-size: 1.25em;
  margin-top: 24px;
  margin-bottom: 16px;
  font-weight: 600;
}
.markdown-body code {
  padding: 0.2em 0.4em;
  margin: 0;
  font-size: 85%;
  background-color: rgba(175,184,193,0.2);
  border-radius: 6px;
  font-family: ui-monospace, SFMono-Regular, SF Mono, Menlo, Consolas, Liberation Mono, monospace;
}
.markdown-body ul {
  padding-left: 2em;
  margin-bottom: 16px;
}
.markdown-body li {
  margin-bottom: 4px;
}
.markdown-body sup.link-ref {
  color: var(--color-accent-fg);
  cursor: pointer;
}
.markdown-body details {
  border: 1px solid var(--color-border-default);
  border-radius: 6px;
  padding: 8px 16px;
  margin-bottom: 16px;
  cursor: pointer;
}
.markdown-body summary {
  outline: none;
  font-weight: 600;
}
.footer-note {
  font-size: 12px;
  color: var(--color-fg-muted);
  border-top: 1px solid var(--color-border-muted);
  padding-top: 16px;
  margin-top: 16px;
}

/* Event Item */
.event-item {
  align-items: center;
  padding: 8px 0;
}

.timeline-marker {
  width: 32px;
  height: 32px;
  background-color: var(--color-canvas-subtle); /* Gray circle */
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--color-canvas-default); /* White border to separate from line */
  margin-left: 16px; /* Center within the 64px avatar area (64/2 - 32/2 = 16) */
  color: var(--color-fg-muted);
  font-size: 14px;
  z-index: 2;
}

.event-content {
  color: var(--color-fg-muted);
  font-size: 13px;
  display: flex;
  align-items: center;
}

.event-row {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.avatar-tiny {
  width: 20px;
  height: 20px;
  border-radius: 50%;
}

.commit-hash {
  font-family: monospace;
  color: var(--color-fg-muted);
}

.timestamp {
  color: var(--color-fg-muted);
  font-weight: normal;
  margin-left: 4px;
}

.timeline-end-line {
  position: absolute;
  left: 31px;
  bottom: 0;
  top: auto;
  height: 20px;
  width: 2px;
  background: var(--color-canvas-default);
  z-index: 1; /* Cover the main line at the bottom */
}

/* Sidebar */
.sidebar-section {
  border-bottom: 1px solid var(--color-border-muted);
  padding: 16px 0;
}
.sidebar-section:first-child {
  padding-top: 0;
}
.sidebar-section:last-child {
  border-bottom: none;
}

.sidebar-header {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-fg-muted);
  margin-bottom: 8px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
}
.sidebar-header:hover {
  color: var(--color-accent-fg);
}
.sidebar-header i {
  opacity: 0;
  transition: opacity 0.2s;
}
.sidebar-header:hover i {
  opacity: 1;
}

.sidebar-content {
  font-size: 12px;
  color: var(--color-fg-default);
}

.secondary-text {
  color: var(--color-fg-muted);
}

.customize-link {
  font-weight: normal;
}

.small-text {
  font-size: 11px;
  margin-top: 8px;
}