/* ─── Variables ───────────────────────────────────────────────────────────── */
:root {
  --bg: #0a1628;
  --bg-card: #0f2035;
  --border: #1e3a5f;
  --accent: #00B0E4;
  --accent-dim: #0078a0;
  --text: #e2e8f0;
  --muted: #64748b;
  --success: #22c55e;
  --warning: #f59e0b;
  --danger: #ef4444;
  --radius: 8px;
  --radius-sm: 4px;
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 13px;
  line-height: 1.5;
  min-height: 100vh;
}

/* ─── Nav ─────────────────────────────────────────────────────────────────── */
.topnav {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 6px 16px;
  background: #0a1628;
  border-bottom: 1px solid var(--border);
  font-size: 12px;
  position: sticky;
  top: 0;
  z-index: 9999;
  overflow-x: auto;
  white-space: nowrap;
}
.topnav-brand {
  color: var(--accent);
  font-weight: 700;
  font-size: 13px;
  margin-right: 12px;
}
.sn {
  color: #94a3b8;
  text-decoration: none;
  padding: 4px 10px;
  border-radius: 6px;
  transition: background .15s, color .15s;
}
.sn:hover { background: #1e3a5f; color: var(--text); }
.sn.active { background: var(--accent-dim); color: white; }

/* ─── Page ────────────────────────────────────────────────────────────────── */
main { padding: 16px; max-width: 1600px; margin: 0 auto; }

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  gap: 12px;
}
.page-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
}
.status-badge {
  padding: 4px 12px;
  border-radius: 16px;
  font-size: 12px;
  font-weight: 600;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--muted);
}
.status-badge.running { border-color: var(--success); color: var(--success); }

/* ─── Dashboard Grid ──────────────────────────────────────────────────────── */
.dashboard-grid {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 16px;
  align-items: start;
}
@media (max-width: 1100px) {
  .dashboard-grid { grid-template-columns: 1fr; }
}
.col-left, .col-right { display: flex; flex-direction: column; gap: 16px; }

/* ─── Cards ───────────────────────────────────────────────────────────────── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
}
.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
  gap: 8px;
  flex-wrap: wrap;
}
.card-title {
  font-weight: 700;
  font-size: 13px;
  color: var(--text);
}
.section-label {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--muted);
  margin: 12px 0 8px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 4px;
}

/* ─── Forms ───────────────────────────────────────────────────────────────── */
.form-row { margin-bottom: 10px; }
.form-row label { display: block; color: #94a3b8; font-size: 12px; margin-bottom: 4px; }
.val { color: var(--accent); font-weight: 700; }
.muted { color: var(--muted); }

input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
  height: 4px;
  cursor: pointer;
}

.text-input {
  width: 100%;
  background: #0a1628;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  padding: 5px 8px;
  font-size: 12px;
  outline: none;
  transition: border-color .15s;
}
.text-input:focus { border-color: var(--accent); }
.text-input-sm { width: 120px; }

.select-input {
  width: 100%;
  background: #0a1628;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  padding: 5px 8px;
  font-size: 12px;
  outline: none;
  cursor: pointer;
}
.select-input:focus { border-color: var(--accent); }

.dual-range { display: flex; flex-direction: column; gap: 4px; }

/* Toggle switch */
.switch { position: relative; display: inline-block; width: 40px; height: 22px; }
.switch input { opacity: 0; width: 0; height: 0; }
.switch-slider {
  position: absolute; inset: 0;
  background: #1e3a5f;
  border-radius: 22px;
  cursor: pointer;
  transition: background .2s;
}
.switch-slider::before {
  content: "";
  position: absolute;
  width: 16px; height: 16px;
  left: 3px; top: 3px;
  background: #64748b;
  border-radius: 50%;
  transition: transform .2s, background .2s;
}
.switch input:checked + .switch-slider { background: var(--accent-dim); }
.switch input:checked + .switch-slider::before { transform: translateX(18px); background: var(--accent); }

/* Toggle group */
.toggle-group { display: flex; gap: 4px; }
.toggle-btn {
  flex: 1;
  padding: 5px 8px;
  background: #0a1628;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--muted);
  font-size: 12px;
  cursor: pointer;
  transition: all .15s;
}
.toggle-btn.active { background: var(--accent-dim); border-color: var(--accent); color: white; }
.toggle-btn:hover:not(.active) { border-color: var(--accent); color: var(--text); }

/* Multi-select chips */
.multi-select { display: flex; flex-wrap: wrap; gap: 6px; }
.chip {
  display: flex; align-items: center; gap: 4px;
  padding: 3px 8px;
  background: #0a1628;
  border: 1px solid var(--border);
  border-radius: 12px;
  font-size: 11px;
  cursor: pointer;
  transition: all .15s;
}
.chip:hover { border-color: var(--accent); }
.chip input { accent-color: var(--accent); }

/* Buttons */
.btn {
  padding: 7px 14px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all .15s;
}
.btn-sm { padding: 4px 10px; font-size: 11px; }
.btn-primary { background: var(--accent-dim); color: white; }
.btn-primary:hover { background: var(--accent); }
.btn-danger { background: #7f1d1d; color: #fca5a5; }
.btn-danger:hover { background: #991b1b; }
.btn-warning { background: #78350f; color: #fcd34d; }
.btn-warning:hover { background: #92400e; }
.btn-secondary { background: #1e3a5f; color: var(--text); }
.btn-secondary:hover { background: #2d4f7c; }
.btn-row { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 12px; }

.status-text { margin-top: 10px; font-size: 12px; color: var(--muted); }
.badge-scenario {
  background: #78350f; color: #fcd34d;
  padding: 2px 8px; border-radius: 10px; font-size: 11px;
}
.badge-refresh { font-size: 11px; color: var(--muted); }

/* ─── Metrics ─────────────────────────────────────────────────────────────── */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}
.metric-tile {
  background: #0a1628;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
}
.metric-label { font-size: 11px; color: var(--muted); margin-bottom: 2px; }
.metric-value { font-size: 22px; font-weight: 700; color: var(--text); }
.metric-value small { font-size: 12px; color: var(--muted); margin-left: 2px; }
.text-error { color: var(--danger); }
.sparkline { display: block; margin-top: 4px; }
.metric-error-line { margin-top: 10px; font-size: 12px; color: var(--muted); }

/* ─── Charger Grid ────────────────────────────────────────────────────────── */
.charger-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 8px;
  max-height: 480px;
  overflow-y: auto;
  padding-right: 4px;
}
.charger-grid::-webkit-scrollbar { width: 6px; }
.charger-grid::-webkit-scrollbar-track { background: var(--bg); }
.charger-grid::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

.charger-card {
  background: #0a1628;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
  cursor: pointer;
  transition: border-color .15s, background .15s;
}
.charger-card:hover { background: #0f1e35; }
.charger-card.available { border-color: var(--success); }
.charger-card.charging { border-color: var(--accent); }
.charger-card.faulted { border-color: var(--danger); }
.charger-card.offline { border-color: var(--muted); opacity: .6; }

.cc-id { font-size: 10px; font-weight: 700; color: var(--accent); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.cc-status { font-size: 11px; font-weight: 600; margin-top: 2px; }
.cc-status.available { color: var(--success); }
.cc-status.charging { color: var(--accent); }
.cc-status.faulted { color: var(--danger); }
.cc-status.offline { color: var(--muted); }
.cc-detail { font-size: 10px; color: var(--muted); margin-top: 2px; }
.grid-empty { grid-column: 1 / -1; text-align: center; color: var(--muted); padding: 32px; font-size: 12px; }

/* ─── Event Log ───────────────────────────────────────────────────────────── */
.log-body {
  max-height: 260px;
  overflow: hidden;
  transition: max-height .3s;
}
.log-body.collapsed { max-height: 0; }
.log-container {
  height: 240px;
  overflow-y: auto;
  background: #050e1a;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  padding: 6px 8px;
  font-family: "JetBrains Mono", "Fira Code", monospace;
  font-size: 11px;
}
.log-container::-webkit-scrollbar { width: 6px; }
.log-container::-webkit-scrollbar-track { background: var(--bg); }
.log-container::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
.log-line { padding: 1px 0; line-height: 1.5; }
.log-line.level-info { color: var(--success); }
.log-line.level-warning { color: var(--warning); }
.log-line.level-error { color: var(--danger); }
.log-hint { font-style: italic; }
.log-controls { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.collapse-icon { font-size: 11px; color: var(--muted); cursor: pointer; }

/* ─── Scenarios ───────────────────────────────────────────────────────────── */
.scenario-list { display: flex; flex-direction: column; gap: 8px; }
.scenario-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  background: #0a1628;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
}
.scenario-name { font-size: 12px; font-weight: 600; }
.scenario-desc { font-size: 11px; }

/* ─── Modal ───────────────────────────────────────────────────────────────── */
.modal {
  position: fixed; inset: 0;
  background: rgba(0,0,0,.7);
  z-index: 10000;
  display: flex; align-items: center; justify-content: center;
}
.modal-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  min-width: 320px; max-width: 90vw;
  padding: 16px;
}
.modal-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; font-weight: 700; }
.btn-close { background: none; border: none; color: var(--muted); cursor: pointer; font-size: 16px; }
.btn-close:hover { color: var(--text); }
.modal-body p { margin-bottom: 8px; }

/* ─── Scrollbar ───────────────────────────────────────────────────────────── */
* { scrollbar-width: thin; scrollbar-color: var(--border) var(--bg); }