/* ───────────────────────────────────────────────
   ParkLink Admin Dashboard – monotone/bitone theme
   Two tones only: near-black slate + single blue accent.
   ─────────────────────────────────────────────── */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  /* Backgrounds */
  --bg:          #f4f5f7;
  --surface:     #ffffff;
  --surface-alt: #f9fafb;

  /* Borders & dividers */
  --border:      #dde0e6;
  --border-lt:   #eceef2;

  /* Text */
  --text:        #16181d;
  --muted:       #6c7282;
  --muted-lt:    #9aa0b0;

  /* Single accent – slate blue */
  --accent:      #3a5bd9;
  --accent-dk:   #2d48b5;
  --accent-lt:   #eef1fb;
  --accent-mid:  #c5cef5;

  /* Functional – kept muted, same family */
  --ok:          #3a5bd9;   /* online/positive  – same accent */
  --ok-lt:       #eef1fb;
  --warn:        #5a5a72;   /* warnings – dark grey-purple */
  --warn-lt:     #f0f0f5;
  --err:         #4a4a5a;   /* errors   – near-black */
  --err-lt:      #ececf0;

  /* Geometry */
  --radius:      8px;
  --sidebar-w:   216px;
  --header-h:    56px;
}

html, body {
  height: 100%;
  font-family: -apple-system, "Segoe UI", system-ui, sans-serif;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
}

/* ── Layout ──────────────────────────────────── */

.layout {
  display: flex;
  min-height: 100vh;
}

/* ── Sidebar ─────────────────────────────────── */

.sidebar {
  width: var(--sidebar-w);
  background: #111318;
  color: #8d93a5;
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  position: fixed;
  top: 0; bottom: 0; left: 0;
  overflow-y: auto;
  z-index: 100;
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 17px 18px;
  border-bottom: 1px solid rgba(255,255,255,.06);
  color: #e8eaf0;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .2px;
}

.sidebar-brand svg { flex-shrink: 0; }

.sidebar-nav { flex: 1; padding: 14px 0; }

.nav-label {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 1.1px;
  text-transform: uppercase;
  color: #3e4355;
  padding: 10px 18px 4px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 8px 18px;
  border-radius: 5px;
  margin: 1px 8px;
  color: #6d738a;
  cursor: pointer;
  transition: background .12s, color .12s;
  font-size: 13px;
  user-select: none;
  text-decoration: none;
}

.nav-item:hover { background: rgba(255,255,255,.05); color: #c8ccda; }

.nav-item.active {
  background: rgba(58,91,217,.18);
  color: #7b9ef5;
}

.sidebar-footer {
  padding: 14px 18px;
  border-top: 1px solid rgba(255,255,255,.05);
  font-size: 11px;
  color: #3e4355;
}

/* ── Main ────────────────────────────────────── */

.main {
  margin-left: var(--sidebar-w);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ── Topbar ──────────────────────────────────── */

.topbar {
  height: var(--header-h);
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 50;
}

.topbar-title { font-size: 15px; font-weight: 600; color: var(--text); }

.topbar-right { display: flex; align-items: center; gap: 10px; }

.token-input {
  width: 272px;
  padding: 6px 11px;
  border: 1px solid var(--border);
  border-radius: 5px;
  font-size: 12px;
  color: var(--muted);
  background: var(--surface-alt);
  outline: none;
  transition: border .15s;
  font-family: "SF Mono", "Fira Code", monospace;
  letter-spacing: .5px;
}

.token-input:focus { border-color: var(--accent); background: #fff; color: var(--text); }

.btn {
  padding: 6px 14px;
  border-radius: 5px;
  border: none;
  font-size: 12.5px;
  font-weight: 500;
  cursor: pointer;
  transition: opacity .12s;
  letter-spacing: .2px;
}

.btn:hover { opacity: .82; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-ghost   { background: transparent; border: 1px solid var(--border); color: var(--text); }

/* ── Status dot ──────────────────────────────── */

.status-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--border);
  flex-shrink: 0;
}

.status-dot.online  { background: var(--accent); }
.status-dot.offline { background: var(--muted); }

.status-row {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--muted);
}

/* ── Pages ───────────────────────────────────── */

.page {
  display: none;
  padding: 24px 26px;
  flex-direction: column;
  gap: 22px;
  animation: fadeIn .18s ease;
}

.page.visible { display: flex; }

@keyframes fadeIn { from { opacity: 0; transform: translateY(3px); } to { opacity: 1; transform: none; } }

.page-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-lt);
}

.page-title { font-size: 18px; font-weight: 700; color: var(--text); }

.page-subtitle { font-size: 12.5px; color: var(--muted); margin-top: 3px; }

.last-updated { font-size: 11.5px; color: var(--muted-lt); margin-top: 4px; }

/* ── Section heading ─────────────────────────── */

.section-title {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 10px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border-lt);
}

/* ── Stat cards ──────────────────────────────── */

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
  gap: 14px;
}

.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 7px;
  position: relative;
  overflow: hidden;
}

/* Subtle left bar – single accent always */
.stat-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 3px; height: 100%;
  background: var(--border);
  border-radius: var(--radius) 0 0 var(--radius);
}

.stat-card.accent::before,
.stat-card.green::before,
.stat-card.orange::before,
.stat-card.purple::before { background: var(--accent); }

.stat-icon {
  width: 32px; height: 32px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-lt);
  color: var(--accent);
}

/* All coloured variants use the same accent icon */
.stat-card.green  .stat-icon,
.stat-card.orange .stat-icon,
.stat-card.purple .stat-icon { background: var(--accent-lt); color: var(--accent); }

.stat-label {
  font-size: 11px;
  color: var(--muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .6px;
}

.stat-value {
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  color: var(--text);
  letter-spacing: -.5px;
}

.stat-sub {
  font-size: 11.5px;
  color: var(--muted-lt);
}

.stat-value.loading {
  background: var(--border-lt);
  color: transparent;
  border-radius: 4px;
  animation: shimmer 1.4s infinite;
  width: 72px; height: 26px;
}

@keyframes shimmer {
  0%   { opacity: 1; }
  50%  { opacity: .35; }
  100% { opacity: 1; }
}

/* ── Chart cards ─────────────────────────────── */

.chart-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

@media (max-width: 900px) { .chart-grid { grid-template-columns: 1fr; } }

.chart-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
}

.chart-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 14px;
}

.chart-card-title { font-size: 13px; font-weight: 600; color: var(--text); }

.chart-card-sub { font-size: 11.5px; color: var(--muted); margin-top: 2px; }

.chart-wrap { position: relative; height: 210px; }

/* ── Health grid ─────────────────────────────── */

.health-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
  gap: 12px;
}

.health-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.health-name { font-weight: 600; font-size: 13px; }

.health-url { font-size: 10.5px; color: var(--muted-lt); word-break: break-all; }

/* ── Alert ───────────────────────────────────── */

.alert {
  padding: 11px 14px;
  border-radius: var(--radius);
  font-size: 12.5px;
  display: flex;
  align-items: flex-start;
  gap: 9px;
  line-height: 1.5;
}

.alert-warn {
  background: var(--warn-lt);
  border: 1px solid #d4d4e0;
  color: var(--warn);
}

.alert-info {
  background: var(--accent-lt);
  border: 1px solid var(--accent-mid);
  color: var(--accent-dk);
}

/* ── Info table ──────────────────────────────── */

.info-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12.5px;
}

.info-table th {
  text-align: left;
  padding: 7px 12px;
  background: var(--surface-alt);
  border-bottom: 1px solid var(--border);
  font-weight: 600;
  color: var(--muted);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .5px;
}

.info-table td {
  padding: 9px 12px;
  border-bottom: 1px solid var(--border-lt);
}

.info-table tr:last-child td { border-bottom: none; }

/* ── Badge ───────────────────────────────────── */

.badge {
  display: inline-block;
  padding: 2px 7px;
  border-radius: 99px;
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: .3px;
  text-transform: uppercase;
}

/* Bitone: accent for positive, grey for everything else */
.badge-green  { background: var(--accent-lt); color: var(--accent); }
.badge-orange { background: var(--warn-lt);   color: var(--warn); }
.badge-gray   { background: var(--border-lt); color: var(--muted); }
.badge-red    { background: var(--err-lt);    color: var(--err); }

/* ── Misc ────────────────────────────────────── */

.divider { height: 1px; background: var(--border); }

.empty-state {
  text-align: center;
  padding: 40px;
  color: var(--muted-lt);
  font-size: 13px;
}

/* ── Responsive ──────────────────────────────── */

@media (max-width: 700px) {
  .sidebar { display: none; }
  .main { margin-left: 0; }
  .stat-grid { grid-template-columns: 1fr 1fr; }
  .token-input { width: 150px; }
}