:root {
  --bg: #0d1117;
  --panel: #161b22;
  --panel-2: #21262d;
  --line: #30363d;
  --text: #e6edf3;
  --muted: #8b949e;
  --accent: #2f81f7;
  --green: #3fb950;
  --red: #f85149;
  --yellow: #d29922;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, sans-serif;
  background: var(--bg);
  color: var(--text);
}

#app {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 260px 1fr;
}

.sidebar {
  border-right: 1px solid var(--line);
  background: #010409;
  padding: 20px 14px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}

.brand span, .topbar p, .muted { color: var(--muted); }
.mark {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  background: var(--text);
  color: #010409;
  font-weight: 800;
}

nav { display: grid; gap: 6px; }
button, input, select {
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--text);
  background: var(--panel);
  min-height: 36px;
  padding: 0 12px;
}

button {
  cursor: pointer;
  font-weight: 600;
}

nav button {
  text-align: left;
  background: transparent;
}

button:hover, nav button.active { background: var(--panel-2); }

.primary, #saveAuth {
  background: #238636;
  border-color: #2ea043;
}

.danger-btn {
  background: #da3633;
  border-color: #f85149;
}

.icon-btn {
  width: 34px;
  padding: 0;
}
main { min-width: 0; }
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 22px 28px;
  border-bottom: 1px solid var(--line);
}

h1, h2, h3, p { margin: 0; }
h1 { font-size: 24px; }
h2 { margin-bottom: 14px; font-size: 20px; }
h3 { font-size: 16px; }

.auth {
  display: flex;
  gap: 8px;
  min-width: 520px;
}

.auth input { flex: 1; }
#content, .status { padding: 22px 28px; }
.status:empty { display: none; }
.status {
  border-bottom: 1px solid var(--line);
  color: var(--muted);
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 14px;
}

.card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  padding: 16px;
}

.metric {
  display: grid;
  gap: 8px;
}

.metric strong { font-size: 30px; }
.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.toolbar h2 { margin-bottom: 4px; }

.actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.actions button:first-of-type {
  border-color: #388bfd;
}

.list {
  display: grid;
  gap: 10px;
}

.split {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 14px;
}

.board {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.lane {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #0b1017;
  padding: 12px;
  display: grid;
  align-content: start;
  gap: 10px;
  min-height: 280px;
}

.file-tree {
  display: grid;
  gap: 14px;
  margin-top: 14px;
}

.file-tree section {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  overflow: hidden;
}

.file-tree h3 {
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  background: #0b1017;
}

.file-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  padding: 10px 14px;
  border-top: 1px solid rgba(48, 54, 61, 0.65);
}

.timeline-shell {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 14px;
}

.scm-panel, .graph-panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  overflow: hidden;
}

.scm-panel {
  padding: 12px;
}

.scm-panel h3 {
  margin: 12px 0 8px;
  text-transform: uppercase;
  color: var(--muted);
  font-size: 12px;
}

.repo-chip {
  border: 1px solid var(--accent);
  border-radius: 6px;
  padding: 8px;
  display: flex;
  justify-content: space-between;
}

.change-count {
  width: fit-content;
  min-width: 34px;
  height: 24px;
  display: grid;
  place-items: center;
  border-radius: 999px;
  background: #388bfd;
  font-weight: 700;
  margin-bottom: 8px;
}

.change-list {
  display: grid;
  gap: 5px;
  max-height: 520px;
  overflow: hidden;
}

.change-list div {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  color: var(--muted);
  font-size: 13px;
}

.change-list span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.change-list b { color: var(--green); }

.graph-head {
  height: 42px;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 14px;
  border-bottom: 1px solid var(--line);
}

.graph-head span { color: var(--muted); }

.timeline-list {
  padding: 14px;
  display: grid;
  gap: 0;
}

.timeline-item {
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr) minmax(120px, auto);
  gap: 10px;
  min-height: 54px;
}

.timeline-item h3,
.timeline-item p {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.timeline-item .rail {
  position: relative;
}

.timeline-item .rail::before {
  content: "";
  position: absolute;
  left: 10px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: #388bfd;
}

.timeline-item .rail span {
  position: absolute;
  left: 4px;
  top: 6px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 2px solid #58a6ff;
  background: var(--bg);
}

.timeline-item.merge .rail::before,
.timeline-item.branch .rail::before { background: #d29922; }
.timeline-item.merge .rail span,
.timeline-item.branch .rail span { border-color: #d29922; }
.timeline-item.deploy .rail::before { background: #3fb950; }
.timeline-item.deploy .rail span { border-color: #3fb950; }

.timeline-item time {
  color: var(--muted);
  font-size: 12px;
  text-align: right;
}

.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: grid;
  place-items: center;
  padding: 20px;
  background: rgba(1, 4, 9, 0.72);
}

.modal-card {
  width: min(520px, 100%);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.42);
}

.modal-head,
.modal-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px;
  border-bottom: 1px solid var(--line);
}

.modal-actions {
  border-top: 1px solid var(--line);
  border-bottom: 0;
  justify-content: flex-end;
}

.modal-body {
  display: grid;
  gap: 12px;
  padding: 14px;
}

.modal-body label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 13px;
}

.modal-body input {
  width: 100%;
}

.row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 14px;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px;
  background: var(--panel);
}

.badge {
  display: inline-flex;
  align-items: center;
  height: 24px;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0 9px;
  color: var(--muted);
  font-size: 12px;
}

.success { color: var(--green); }
.danger { color: var(--red); }
.warn { color: var(--yellow); }
pre {
  overflow: auto;
  background: #010409;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  line-height: 1.45;
}

.docs pre {
  max-height: 68vh;
  white-space: pre-wrap;
}

@media (max-width: 820px) {
  #app { grid-template-columns: 1fr; }
  .sidebar { border-right: 0; border-bottom: 1px solid var(--line); }
  nav { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .topbar { align-items: stretch; flex-direction: column; }
  .auth { min-width: 0; }
  .auth { flex-direction: column; }
  .grid { grid-template-columns: 1fr; }
  .split, .board { grid-template-columns: 1fr; }
  .timeline-shell { grid-template-columns: 1fr; }
  .timeline-item { grid-template-columns: 28px minmax(0, 1fr); }
  .timeline-item time { grid-column: 2; text-align: left; }
  .row { grid-template-columns: 1fr; }
}