/* ── AutoMLOps — Dark Theme ─────────────────────────────────────────────── */
:root {
  --bg-primary:    #0d1117;
  --bg-secondary:  #161b22;
  --bg-tertiary:   #21262d;
  --bg-hover:      #30363d44;
  --border-color:  #30363d;
  --text-primary:  #e6edf3;
  --text-secondary:#8b949e;
  --text-muted:    #656d76;
  --accent:        #8b5cf6;
  --accent-light:  #a78bfa;
  --accent-blue:   #3b82f6;
  --success:       #22c55e;
  --warning:       #f59e0b;
  --danger:        #ef4444;
  --cyan:          #06b6d4;
  --sidebar-w:     240px;
  --navbar-h:      56px;
  --radius:        10px;
  --radius-sm:     6px;
  --shadow:        0 4px 24px rgba(0,0,0,.45);
}

/* ── Reset / base ─────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 15px; }
body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
}
a { color: var(--accent-light); text-decoration: none; }
a:hover { color: var(--accent); }

/* ── Scrollbar ────────────────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-secondary); }
::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 3px; }

/* ── Sidebar ──────────────────────────────────────────────────────────────── */
.sidebar {
  position: fixed;
  top: 0; left: 0;
  width: var(--sidebar-w);
  height: 100vh;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  z-index: 100;
  transition: transform .25s ease;
}
.sidebar-logo {
  display: flex; align-items: center; gap: 10px;
  padding: 18px 20px 16px;
  border-bottom: 1px solid var(--border-color);
}
.sidebar-logo-icon {
  width: 34px; height: 34px; border-radius: 8px;
  background: linear-gradient(135deg, var(--accent), var(--accent-blue));
  display: flex; align-items: center; justify-content: center;
  font-size: 17px;
}
.sidebar-logo-text { font-weight: 700; font-size: 1rem; letter-spacing: -.3px; }
.sidebar-logo-sub  { font-size: .68rem; color: var(--text-muted); }

.sidebar-nav { flex: 1; overflow-y: auto; padding: 12px 0; }
.nav-section-label {
  padding: 14px 20px 4px;
  font-size: .68rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.nav-item {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 20px;
  color: var(--text-secondary);
  cursor: pointer;
  border-radius: 0;
  transition: background .15s, color .15s;
  font-size: .9rem;
}
.nav-item:hover { background: var(--bg-hover); color: var(--text-primary); }
.nav-item.active { color: var(--accent-light); background: #8b5cf618; }
.nav-item .nav-icon { width: 18px; text-align: center; font-size: .95rem; }
.nav-badge {
  margin-left: auto;
  background: var(--accent);
  color: #fff;
  font-size: .62rem;
  font-weight: 700;
  padding: 1px 6px;
  border-radius: 10px;
}

.sidebar-footer {
  padding: 14px 20px;
  border-top: 1px solid var(--border-color);
  font-size: .78rem;
  color: var(--text-muted);
}
.sidebar-footer a { color: var(--text-muted); }
.sidebar-footer a:hover { color: var(--accent-light); }

/* ── Top navbar ───────────────────────────────────────────────────────────── */
.topnav {
  position: fixed;
  top: 0; left: var(--sidebar-w); right: 0;
  height: var(--navbar-h);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  display: flex; align-items: center;
  padding: 0 24px;
  z-index: 90;
  gap: 12px;
}
.topnav-title { font-weight: 600; font-size: 1rem; flex: 1; }
.topnav-badge {
  background: linear-gradient(135deg, var(--accent), var(--accent-blue));
  color: #fff;
  font-size: .7rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 20px;
}

/* ── Main content ─────────────────────────────────────────────────────────── */
.main {
  margin-left: var(--sidebar-w);
  padding-top: var(--navbar-h);
  min-height: 100vh;
}
.page-content { padding: 28px 32px; }

/* ── Cards ────────────────────────────────────────────────────────────────── */
.card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 20px;
}
.card-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 16px;
}
.card-title { font-weight: 600; font-size: .95rem; display: flex; align-items: center; gap: 8px; }
.card-sm { padding: 14px 18px; }

/* ── Stat cards ───────────────────────────────────────────────────────────── */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin-bottom: 24px; }
.stat-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 20px 22px;
  position: relative;
  overflow: hidden;
}
.stat-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
}
.stat-card.purple::before  { background: linear-gradient(90deg, var(--accent), var(--accent-light)); }
.stat-card.blue::before    { background: linear-gradient(90deg, var(--accent-blue), var(--cyan)); }
.stat-card.green::before   { background: linear-gradient(90deg, var(--success), #4ade80); }
.stat-card.yellow::before  { background: linear-gradient(90deg, var(--warning), #fcd34d); }
.stat-label { font-size: .78rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: .06em; margin-bottom: 6px; }
.stat-value { font-size: 2rem; font-weight: 700; letter-spacing: -.5px; }
.stat-sub   { font-size: .78rem; color: var(--text-secondary); margin-top: 4px; }

/* ── Badges / pills ───────────────────────────────────────────────────────── */
.badge {
  display: inline-block;
  padding: 2px 9px;
  border-radius: 12px;
  font-size: .72rem;
  font-weight: 600;
}
.badge-success  { background: #22c55e22; color: var(--success); }
.badge-warning  { background: #f59e0b22; color: var(--warning); }
.badge-danger   { background: #ef444422; color: var(--danger); }
.badge-info     { background: #3b82f622; color: var(--accent-blue); }
.badge-purple   { background: #8b5cf622; color: var(--accent-light); }
.badge-muted    { background: var(--bg-tertiary); color: var(--text-secondary); }

.stage-production { background: #22c55e22; color: var(--success); }
.stage-staging    { background: #f59e0b22; color: var(--warning); }
.stage-archived   { background: #ef444422; color: var(--danger); }
.stage-none       { background: var(--bg-tertiary); color: var(--text-muted); }

/* ── Buttons ──────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  font-size: .85rem;
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: opacity .15s, transform .1s;
  white-space: nowrap;
}
.btn:hover  { opacity: .88; }
.btn:active { transform: scale(.97); }
.btn-primary  { background: var(--accent);      color: #fff; }
.btn-blue     { background: var(--accent-blue); color: #fff; }
.btn-success  { background: var(--success);     color: #fff; }
.btn-warning  { background: var(--warning);     color: #000; }
.btn-danger   { background: var(--danger);      color: #fff; }
.btn-ghost    { background: transparent; color: var(--text-secondary); border: 1px solid var(--border-color); }
.btn-ghost:hover { color: var(--text-primary); border-color: var(--text-secondary); background: var(--bg-hover); }
.btn-sm { padding: 5px 12px; font-size: .8rem; }
.btn-lg { padding: 11px 24px; font-size: .95rem; }
.btn:disabled { opacity: .45; cursor: not-allowed; }

/* ── Tables ───────────────────────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
thead tr { border-bottom: 1px solid var(--border-color); }
th {
  text-align: left;
  padding: 10px 14px;
  font-size: .78rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: .05em;
  white-space: nowrap;
}
td { padding: 11px 14px; font-size: .88rem; border-bottom: 1px solid #30363d55; }
tr:last-child td { border-bottom: none; }
tr:hover td { background: var(--bg-hover); }

/* ── Forms ────────────────────────────────────────────────────────────────── */
.form-group { margin-bottom: 16px; }
.form-label { display: block; font-size: .82rem; font-weight: 500; color: var(--text-secondary); margin-bottom: 6px; }
.form-control, .form-select {
  width: 100%;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  padding: 9px 12px;
  font-size: .88rem;
  outline: none;
  transition: border-color .15s;
  appearance: none;
}
.form-control:focus, .form-select:focus { border-color: var(--accent); box-shadow: 0 0 0 3px #8b5cf620; }
.form-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238b949e' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  padding-right: 32px;
}

/* ── Progress bars ────────────────────────────────────────────────────────── */
.progress-bar-wrap {
  background: var(--bg-tertiary);
  border-radius: 99px;
  height: 8px;
  overflow: hidden;
}
.progress-bar {
  height: 100%;
  border-radius: 99px;
  background: linear-gradient(90deg, var(--accent), var(--accent-blue));
  transition: width .4s ease;
}

/* ── Tabs ─────────────────────────────────────────────────────────────────── */
.tab-bar {
  display: flex;
  gap: 2px;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 20px;
}
.tab-btn {
  padding: 9px 18px;
  font-size: .87rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: color .15s, border-color .15s;
  margin-bottom: -1px;
}
.tab-btn:hover  { color: var(--text-primary); }
.tab-btn.active { color: var(--accent-light); border-bottom-color: var(--accent); }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ── Modals ───────────────────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,.65);
  display: flex; align-items: center; justify-content: center;
  z-index: 200;
  opacity: 0; pointer-events: none;
  transition: opacity .2s;
}
.modal-overlay.open { opacity: 1; pointer-events: all; }
.modal {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 24px;
  width: min(540px, 95vw);
  max-height: 90vh;
  overflow-y: auto;
  transform: translateY(12px);
  transition: transform .2s;
}
.modal-overlay.open .modal { transform: translateY(0); }
.modal-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; }
.modal-title  { font-size: 1.05rem; font-weight: 600; }
.modal-close  { background: none; border: none; color: var(--text-secondary); cursor: pointer; font-size: 1.1rem; }
.modal-close:hover { color: var(--danger); }
.modal-footer { display: flex; gap: 10px; justify-content: flex-end; margin-top: 20px; }

/* ── Toast notifications ──────────────────────────────────────────────────── */
#toast-area {
  position: fixed; bottom: 24px; right: 24px;
  z-index: 300; display: flex; flex-direction: column; gap: 10px;
}
.toast {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 12px 18px;
  font-size: .86rem;
  box-shadow: var(--shadow);
  display: flex; align-items: center; gap: 10px;
  animation: slideIn .25s ease;
  min-width: 240px;
}
.toast.success { border-left: 3px solid var(--success); }
.toast.error   { border-left: 3px solid var(--danger);  }
.toast.info    { border-left: 3px solid var(--accent);  }
@keyframes slideIn { from { transform: translateX(40px); opacity: 0; } to { transform: none; opacity: 1; } }

/* ── Pipeline / DAG canvas ────────────────────────────────────────────────── */
.dag-canvas { background: var(--bg-primary); border-radius: var(--radius); min-height: 300px; }
.pipeline-log {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 14px;
  font-family: 'Fira Code', 'Courier New', monospace;
  font-size: .82rem;
  color: var(--text-secondary);
  max-height: 240px;
  overflow-y: auto;
  line-height: 1.7;
}
.log-line-ok   { color: var(--success); }
.log-line-err  { color: var(--danger); }
.log-line-info { color: var(--accent-light); }

/* ── AutoML leaderboard ───────────────────────────────────────────────────── */
.leaderboard-row {
  display: grid;
  grid-template-columns: 30px 1fr auto auto;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  transition: background .15s;
}
.leaderboard-row:hover { background: var(--bg-hover); }
.rank-badge {
  width: 26px; height: 26px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: .8rem;
}
.rank-1 { background: #f59e0b33; color: var(--warning); }
.rank-2 { background: #8b949e33; color: var(--text-secondary); }
.rank-3 { background: #d97706aa; color: #d97706; }
.rank-n { background: var(--bg-tertiary); color: var(--text-muted); }

/* ── Metric value highlight ───────────────────────────────────────────────── */
.metric-val {
  font-weight: 700;
  font-size: .95rem;
  font-variant-numeric: tabular-nums;
}
.metric-good   { color: var(--success); }
.metric-medium { color: var(--warning); }
.metric-bad    { color: var(--danger);  }

/* ── Section headings ─────────────────────────────────────────────────────── */
.page-title { font-size: 1.4rem; font-weight: 700; margin-bottom: 4px; }
.page-sub   { font-size: .88rem; color: var(--text-secondary); margin-bottom: 24px; }

/* ── Grid helpers ─────────────────────────────────────────────────────────── */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-gap     { display: flex; align-items: center; gap: 10px; }
.mt-4  { margin-top: 4px; }
.mt-8  { margin-top: 8px; }
.mt-12 { margin-top: 12px; }
.mt-20 { margin-top: 20px; }
.mb-20 { margin-bottom: 20px; }
.gap-12 { gap: 12px; }

/* ── Responsive ───────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: none; }
  .main, .topnav { margin-left: 0; left: 0; }
  .page-content { padding: 16px; }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .stat-grid { grid-template-columns: 1fr 1fr; }
}

/* ── Plotly overrides ─────────────────────────────────────────────────────── */
.js-plotly-plot .plotly { border-radius: var(--radius-sm); }
.modebar { display: none !important; }

/* ── Category pill row ────────────────────────────────────────────────────── */
.category-pills { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 14px; }
.category-pill {
  padding: 4px 12px;
  border-radius: 20px;
  font-size: .78rem;
  font-weight: 500;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
  cursor: pointer;
  transition: all .15s;
}
.category-pill:hover, .category-pill.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

/* ── Algorithm card grid ──────────────────────────────────────────────────── */
.algo-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 10px; }
.algo-card {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  cursor: pointer;
  transition: border-color .15s, background .15s;
  position: relative;
}
.algo-card:hover  { border-color: var(--accent); background: #8b5cf610; }
.algo-card.selected { border-color: var(--accent); background: #8b5cf618; }
.algo-card .algo-name { font-weight: 500; font-size: .85rem; margin-bottom: 3px; }
.algo-card .algo-desc { font-size: .75rem; color: var(--text-muted); line-height: 1.4; }
.algo-card .algo-dot  {
  width: 8px; height: 8px; border-radius: 50%;
  position: absolute; top: 12px; right: 12px;
}

/* ── Spinning loader ──────────────────────────────────────────────────────── */
.spinner {
  width: 20px; height: 20px; border-radius: 50%;
  border: 2px solid var(--border-color);
  border-top-color: var(--accent);
  animation: spin .6s linear infinite;
  display: inline-block;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Empty state ──────────────────────────────────────────────────────────── */
.empty-state {
  text-align: center;
  padding: 48px 20px;
  color: var(--text-muted);
}
.empty-state-icon { font-size: 3rem; margin-bottom: 12px; }
.empty-state-title { font-size: 1rem; font-weight: 600; color: var(--text-secondary); margin-bottom: 6px; }

/* ── Workflow banner ──────────────────────────────────────────────────────── */
.workflow-step {
  display: flex; flex-direction: column; align-items: center; gap: 5px;
  font-size: .75rem; font-weight: 500; color: var(--text-secondary);
  padding: 8px 14px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  min-width: 80px; text-align: center;
}
.workflow-step i { font-size: 1.1rem; }
.workflow-arrow {
  color: var(--text-muted); font-size: .8rem;
  padding: 0 6px;
}
@media (max-width: 768px) {
  .workflow-arrow { display: none; }
  .workflow-step  { min-width: 60px; padding: 6px 8px; font-size: .7rem; }
}

/* ── Light theme ──────────────────────────────────────────────────────────── */
[data-theme="light"] {
  --bg-primary:    #f6f8fa;
  --bg-secondary:  #ffffff;
  --bg-tertiary:   #eaeef2;
  --bg-hover:      #d0d7de30;
  --border-color:  #d0d7de;
  --text-primary:  #24292f;
  --text-secondary:#57606a;
  --text-muted:    #8c959f;
  --shadow:        0 4px 24px rgba(0,0,0,.10);
}
[data-theme="light"] .form-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2357606a' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
}
[data-theme="light"] .topnav-badge {
  color: #fff;
}
[data-theme="light"] .pipeline-log {
  color: var(--text-secondary);
}

/* ── Smooth theme transition ──────────────────────────────────────────────── */
body.theme-transition,
body.theme-transition *,
body.theme-transition *::before,
body.theme-transition *::after {
  transition: background-color .22s ease, color .22s ease, border-color .22s ease !important;
}