:root {
  --bg: #0e1117;
  --bg-elev: #161b22;
  --bg-elev-2: #1c2230;
  --border: #262d3a;
  --text: #e6edf3;
  --text-dim: #8b949e;
  --text-mute: #6e7681;
  --accent: #f9bd2b;
  --accent-2: #1d874b;
  --danger: #f85149;
  --ok: #3fb950;
  --radius: 10px;
  --shadow: 0 1px 0 rgba(255, 255, 255, 0.04) inset, 0 8px 24px rgba(0, 0, 0, 0.25);
  --scale-0: #1b2230;
  --scale-1: #2a3a1e;
  --scale-2: #436b25;
  --scale-3: #6c9a32;
  --scale-4: #9bc847;
  --scale-5: #c7ee63;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.5 "DM Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-feature-settings: "ss01" on; /* DM Sans alt single-storey g */
}

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

/* Top bar */
.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 24px;
  background: rgba(14, 17, 23, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}

.brand { display: flex; align-items: center; gap: 12px; }
.brand .logo { font-size: 22px; color: var(--accent); }
.brand h1 { font-size: 16px; margin: 0; font-weight: 600; }
.brand .subtitle { margin: 0; color: var(--text-dim); font-size: 12px; }

.range-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

/* Range dropdown (Klaviyo-style) */
.range-dropdown { position: relative; }

.range-trigger {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 8px 12px;
  border-radius: 8px;
  cursor: pointer;
  font: inherit;
  font-weight: 500;
  min-width: 200px;
  transition: border-color 0.12s ease;
}
.range-trigger:hover { border-color: var(--text-mute); }
.range-trigger[aria-expanded="true"] { border-color: var(--accent); }
.range-trigger-icon { font-size: 14px; line-height: 1; }
.range-trigger-label { flex: 1; text-align: left; }
.range-trigger-caret {
  font-size: 10px;
  color: var(--text-dim);
  transition: transform 0.15s ease;
}
.range-trigger[aria-expanded="true"] .range-trigger-caret { transform: rotate(180deg); }

.range-panel {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  z-index: 50;
  min-width: 280px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
  padding: 6px;
  animation: dropdown-in 0.12s ease-out;
}
@keyframes dropdown-in {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

.range-group + .range-group {
  margin-top: 4px;
  padding-top: 4px;
  border-top: 1px solid var(--border);
}
.range-group-label {
  color: var(--text-mute);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 6px 8px 4px;
  user-select: none;
}
.range-options {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
}
.range-options button {
  background: transparent;
  border: 0;
  color: var(--text-dim);
  padding: 7px 10px;
  border-radius: 6px;
  cursor: pointer;
  font: inherit;
  text-align: left;
  transition: background 0.1s ease, color 0.1s ease;
}
.range-options button:hover { background: var(--bg-elev-2); color: var(--text); }
.range-options button.active { background: rgba(249, 189, 43, 0.14); color: var(--accent); font-weight: 500; }
.range-options button:focus-visible { outline: 2px solid var(--accent); outline-offset: -2px; }

.range-custom {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  align-items: end;
  padding: 4px 8px 8px;
  font-size: 12px;
  color: var(--text-dim);
}
.range-custom label { display: flex; flex-direction: column; gap: 4px; }
.range-custom input[type="date"] {
  background: var(--bg-elev-2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 6px 8px;
  border-radius: 6px;
  font: inherit;
  width: 100%;
}
.range-custom-apply {
  grid-column: 1 / -1;
  background: var(--accent);
  border: 0;
  color: #1a1300;
  font-weight: 600;
  padding: 8px;
  border-radius: 6px;
  cursor: pointer;
  font: inherit;
  margin-top: 2px;
}
.range-custom-apply:hover { filter: brightness(1.05); }

.refresh {
  background: var(--bg-elev-2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 8px 14px;
  border-radius: 8px;
  cursor: pointer;
  font: inherit;
}
.refresh:hover { border-color: var(--accent); }

/* Main grid */
main {
  max-width: 1400px;
  margin: 0 auto;
  padding: 24px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}
.panel.wide { grid-column: 1 / -1; }

@media (max-width: 900px) {
  main { grid-template-columns: 1fr; }
  .topbar { flex-direction: column; align-items: stretch; }
}

/* Stat cards */
.stats {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}
@media (max-width: 700px) { .stats { grid-template-columns: repeat(2, 1fr); } }

.stat-card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
  box-shadow: var(--shadow);
}
.stat-label { display: block; color: var(--text-dim); font-size: 12px; text-transform: uppercase; letter-spacing: 0.04em; }
.stat-value { display: block; margin-top: 6px; font-size: 26px; font-weight: 600; }

/* Panels */
.panel {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
  box-shadow: var(--shadow);
}
.panel-head { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 12px; }
.panel-head h2 { margin: 0; font-size: 14px; font-weight: 600; }
.panel-sub { color: var(--text-mute); font-size: 12px; font-weight: 400; }

.panel-body { min-height: 80px; }
.chart-wrap { position: relative; height: 260px; }

.placeholder { color: var(--text-mute); font-size: 13px; padding: 20px 0; text-align: center; }
.error-banner {
  grid-column: 1 / -1;
  background: rgba(248, 81, 73, 0.12);
  border: 1px solid var(--danger);
  color: #ffb4b0;
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 13px;
}

/* Heatmap */
.heatmap { display: inline-grid; gap: 2px; font-size: 11px; }
.heatmap .row-label, .heatmap .col-label {
  color: var(--text-mute);
  font-size: 10px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding-right: 6px;
}
.heatmap .col-label { justify-content: center; padding: 0 0 4px 0; }
.heatmap-cell {
  width: 16px;
  height: 16px;
  border-radius: 3px;
  background: var(--scale-0);
  position: relative;
}
.heatmap-cell.l1 { background: var(--scale-1); }
.heatmap-cell.l2 { background: var(--scale-2); }
.heatmap-cell.l3 { background: var(--scale-3); }
.heatmap-cell.l4 { background: var(--scale-4); }
.heatmap-cell.l5 { background: var(--scale-5); }
.heatmap-cell:hover { outline: 1px solid var(--text); }
.heatmap-cell[data-tip]:hover::after {
  content: attr(data-tip);
  position: absolute;
  bottom: 130%;
  left: 50%;
  transform: translateX(-50%);
  background: #000;
  color: var(--text);
  padding: 4px 8px;
  border-radius: 4px;
  white-space: nowrap;
  pointer-events: none;
  z-index: 20;
  font-size: 11px;
  border: 1px solid var(--border);
}

/* Calendar heatmap */
.calendar { display: flex; gap: 14px; overflow-x: auto; padding-bottom: 6px; }
.calendar .month { display: flex; flex-direction: column; gap: 2px; }
.calendar .month-label { font-size: 10px; color: var(--text-mute); margin-bottom: 2px; }
.calendar .week { display: flex; gap: 2px; }
.calendar .day { width: 13px; height: 13px; border-radius: 2px; background: var(--scale-0); }
.calendar .day.l1 { background: var(--scale-1); }
.calendar .day.l2 { background: var(--scale-2); }
.calendar .day.l3 { background: var(--scale-3); }
.calendar .day.l4 { background: var(--scale-4); }
.calendar .day.l5 { background: var(--scale-5); }
.calendar .day[data-tip]:hover::after {
  content: attr(data-tip);
  position: absolute;
  margin-top: -28px;
  background: #000;
  color: var(--text);
  padding: 3px 7px;
  border-radius: 4px;
  font-size: 10px;
  white-space: nowrap;
  z-index: 20;
  border: 1px solid var(--border);
}
.legend { display: flex; align-items: center; gap: 4px; margin-top: 10px; font-size: 11px; color: var(--text-mute); }
.legend .swatch { width: 12px; height: 12px; border-radius: 2px; }

/* Table */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); white-space: nowrap; }
th { color: var(--text-dim); font-weight: 500; font-size: 12px; cursor: pointer; user-select: none; }
th:hover { color: var(--text); }
th.num, td.num { text-align: right; font-variant-numeric: tabular-nums; }
tbody tr:hover { background: var(--bg-elev-2); }
td.tool-name { font-weight: 500; font-size: 13px; }

/* Page link cells (landing / exit tables) */
td.page-cell { max-width: 360px; }
td.page-cell a {
  display: inline-block;
  max-width: 100%;
  color: var(--text);
  font-size: 12.5px;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  vertical-align: bottom;
}
td.page-cell a:hover { color: var(--accent); text-decoration: none; }
td.page-cell .page-host { color: var(--text-mute); font-weight: 400; }
.exit-bar {
  display: inline-block;
  height: 6px;
  border-radius: 3px;
  background: var(--accent);
  vertical-align: middle;
  margin-right: 6px;
  min-width: 4px;
}
.exit-bar.high { background: var(--danger); }
.exit-bar.mid { background: var(--accent); }
.exit-bar.low { background: var(--ok); }

.footnote { grid-column: 1 / -1; text-align: center; color: var(--text-mute); font-size: 12px; padding: 16px 0; }

/* ============================================================
   ADMIN UI
   ============================================================ */
.admin-body { background: var(--bg); }

/* Login gate */
.admin-login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.admin-card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 32px;
  width: 100%;
  max-width: 420px;
  box-shadow: var(--shadow);
}
.admin-card.wide { max-width: none; padding: 22px 24px; }
.admin-card h1 { margin: 0 0 4px; font-size: 18px; font-weight: 600; }
.admin-card .sub { margin: 0 0 20px; color: var(--text-dim); font-size: 13px; }
.admin-card label {
  display: block;
  font-size: 12px;
  color: var(--text-dim);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.admin-card input,
.admin-card select {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 10px 12px;
  border-radius: 8px;
  font: inherit;
  margin-bottom: 16px;
}
.admin-card input:focus,
.admin-card select:focus { outline: none; border-color: var(--accent); }
.admin-card input:last-child { margin-bottom: 0; }
.admin-err { color: var(--danger); font-size: 13px; margin-top: 12px; min-height: 18px; }
.admin-back {
  display: block;
  margin-top: 20px;
  text-align: center;
  color: var(--text-mute);
  font-size: 12px;
  text-decoration: none;
}
.admin-back:hover { color: var(--text); }

/* Buttons */
.admin-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--border);
  background: var(--bg-elev-2);
  color: var(--text);
  padding: 8px 14px;
  border-radius: 8px;
  cursor: pointer;
  font: inherit;
  font-weight: 500;
  text-decoration: none;
  transition: border-color 0.12s ease, background 0.12s ease;
}
.admin-btn:hover { border-color: var(--text-mute); }
.admin-btn.primary {
  background: var(--accent);
  color: #1a1300;
  border-color: var(--accent);
  font-weight: 600;
}
.admin-btn.primary:hover { filter: brightness(1.05); border-color: var(--accent); }
.admin-btn.primary:disabled { opacity: 0.6; cursor: not-allowed; }
.admin-btn.ghost { background: transparent; }
.admin-btn.danger { color: var(--danger); border-color: rgba(248, 81, 73, 0.4); }
.admin-btn.danger:hover { background: rgba(248, 81, 73, 0.1); border-color: var(--danger); }
.admin-btn.small { padding: 5px 10px; font-size: 12px; }

/* Admin panel layout */
.admin-panel { min-height: 100vh; }

/* Critical: the HTML `hidden` attribute must win over any `display` value.
   Without this, `display: flex` on .admin-login-wrap keeps the form visible
   even after JS sets element.hidden = true. */
[hidden] { display: none !important; }
.admin-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 24px;
  background: rgba(14, 17, 23, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}
.admin-topbar .brand { display: flex; align-items: center; gap: 12px; }
.admin-topbar .logo { font-size: 22px; color: var(--accent); }
.admin-topbar h1 { font-size: 16px; margin: 0; font-weight: 600; }
.admin-topbar .subtitle { margin: 0; color: var(--text-dim); font-size: 12px; }
.admin-actions { display: flex; gap: 8px; flex-wrap: wrap; }

.admin-main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

/* Project form */
.project-form .form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}
.project-form .field { display: flex; flex-direction: column; }
.project-form .field.full { grid-column: 1 / -1; }
.project-form .field label {
  margin-bottom: 6px;
  text-transform: none;
  letter-spacing: 0;
  font-size: 13px;
  color: var(--text-dim);
  display: flex;
  align-items: center;
  gap: 8px;
}
.project-form .field .req { color: var(--danger); }
.project-form .field .hint {
  font-size: 11px;
  color: var(--text-mute);
  font-weight: 400;
  text-transform: none;
}
.project-form .field .hint code {
  background: var(--bg-elev-2);
  padding: 1px 5px;
  border-radius: 3px;
  font-size: 11px;
}
.project-form .field input,
.project-form .field select {
  width: 100%;
  margin-bottom: 0;
  background: var(--bg);
}
.project-form .key-row { display: flex; gap: 8px; }
.project-form .key-row input { flex: 1; }
.project-form .key-row .admin-btn { white-space: nowrap; }
.form-actions { display: flex; gap: 10px; align-items: center; }

@media (max-width: 640px) {
  .project-form .form-grid { grid-template-columns: 1fr; }
}

/* Projects table */
#admin-projects-table code {
  background: var(--bg-elev-2);
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 12px;
}
#admin-projects-table code.muted { background: transparent; color: var(--text-dim); }
#admin-projects-table .muted { color: var(--text-dim); }
#admin-projects-table .row-link { color: var(--text-mute); text-decoration: none; margin-left: 4px; }
#admin-projects-table .row-link:hover { color: var(--accent); }
#admin-projects-table .actions-col { white-space: nowrap; text-align: right; }
#admin-projects-table .actions-col .admin-btn + .admin-btn { margin-left: 6px; }

/* ============================================================
   PROJECT SWITCHER (main dashboard top bar)
   ============================================================ */
.project-switcher { position: relative; }
.project-switcher-trigger {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 8px 12px;
  border-radius: 8px;
  cursor: pointer;
  font: inherit;
  font-weight: 600;
  min-width: 180px;
  transition: border-color 0.12s ease;
}
.project-switcher-trigger:hover { border-color: var(--text-mute); }
.project-switcher-trigger .ps-icon { font-size: 14px; }
.project-switcher-trigger .ps-label { flex: 1; text-align: left; }
.project-switcher-trigger .ps-caret {
  font-size: 10px;
  color: var(--text-dim);
  transition: transform 0.15s ease;
}
.project-switcher-trigger[aria-expanded="true"] { border-color: var(--accent); }
.project-switcher-trigger[aria-expanded="true"] .ps-caret { transform: rotate(180deg); }

.project-switcher-panel {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  z-index: 50;
  min-width: 240px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
  padding: 6px;
  animation: dropdown-in 0.12s ease-out;
}
.project-switcher-panel button {
  display: block;
  width: 100%;
  background: transparent;
  border: 0;
  color: var(--text-dim);
  padding: 8px 12px;
  border-radius: 6px;
  cursor: pointer;
  font: inherit;
  text-align: left;
  transition: background 0.1s ease, color 0.1s ease;
}
.project-switcher-panel button:hover { background: var(--bg-elev-2); color: var(--text); }
.project-switcher-panel button.active {
  background: rgba(249, 189, 43, 0.14);
  color: var(--accent);
  font-weight: 500;
}
.project-switcher-empty {
  padding: 14px 12px;
  color: var(--text-mute);
  font-size: 13px;
}
.project-switcher-empty a { color: var(--accent); }

/* ============================================================
   LOADING STATES
   ============================================================ */
.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 80px;
  color: var(--text-mute);
  font-size: 13px;
}
.chart-wrap.loading { min-height: 200px; }
.spinner {
  width: 16px;
  height: 16px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Skeleton pulse for stat cards while loading */
.stat-value.skeleton {
  display: inline-block;
  min-width: 60px;
  height: 26px;
  background: linear-gradient(90deg, var(--bg-elev-2) 25%, var(--bg-elev) 50%, var(--bg-elev-2) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.4s ease-in-out infinite;
  border-radius: 4px;
  color: transparent;
}
@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}