:root {
  --bg: #0A0C0F;
  --text: #E7E9EC;
  --muted: #8B93A1;
  --card-bg: #15181D;
  --card-border: #22262E;
  --row-border: #1C2027;
  --accent: #3E8BFF;
  --accent-text: #06121F;
  --green: #12B76A;
  --orange: #F79009;
  --red: #F04438;
  --red-bg: #1D1416;
  --red-border: #4A2024;
  --code-bg: #0A0C0F;
  --code-text: #7EE787;
}
:root[data-theme="light"] {
  --bg: #F5F6F8;
  --text: #1A1D21;
  --muted: #6B7280;
  --card-bg: #FFFFFF;
  --card-border: #E5E7EB;
  --row-border: #EEF0F3;
  --accent-text: #FFFFFF;
  --red-bg: #FDECEC;
  --red-border: #F3B9BB;
  --code-bg: #F0F1F3;
  --code-text: #0F7B3B;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", system-ui, sans-serif;
  padding-bottom: 40px;
  transition: background 0.15s, color 0.15s;
}
.header {
  padding: 22px 18px 14px;
  display: flex; align-items: center; justify-content: space-between;
}
.header h1 { font-size: 20px; margin: 0; font-weight: 700; letter-spacing: -0.3px; }
.status-line { display: flex; align-items: center; gap: 6px; margin-top: 3px; }
.dot { width: 7px; height: 7px; border-radius: 50%; background: var(--green); }
.dot.off { background: #4A4F58; }
.muted { color: var(--muted); font-size: 13px; }

.header-actions { display: flex; gap: 8px; align-items: center; }
.icon-btn {
  width: 34px; height: 34px; border-radius: 10px;
  background: var(--card-bg); border: 1px solid var(--card-border);
  display: flex; align-items: center; justify-content: center;
  font-size: 16px; cursor: pointer; color: var(--text);
}
.icon-btn.spinning { animation: spin 1s linear infinite; }
@keyframes spin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }

.section-title {
  margin: 18px 18px 10px;
  font-size: 15px; font-weight: 700;
  display: flex; justify-content: space-between; align-items: center;
}
.section-title .link-btn {
  font-size: 12px; font-weight: 600; color: var(--accent); cursor: pointer; background: none; border: none;
}

.card {
  background: var(--card-bg); border: 1px solid var(--card-border); border-radius: 14px;
  padding: 14px; margin: 0 18px 14px;
}
.card.clickable { cursor: pointer; }
.card.clickable:active { opacity: 0.8; }
.cards-row { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 10px; margin: 0 18px 14px; }
.cards-row .card { margin: 0; padding: 12px; }
.stat-label { font-size: 11px; color: var(--muted); margin-bottom: 8px; }
.stat-value { font-size: 19px; font-weight: 700; margin-bottom: 8px; }
.bar-track { height: 4px; border-radius: 2px; background: var(--card-border); overflow: hidden; }
.bar-fill { height: 100%; background: var(--accent); }
.bar-fill.green { background: var(--green); }
.bar-fill.orange { background: var(--orange); }

.spark { display: flex; align-items: flex-end; gap: 3px; height: 64px; }
.spark div { flex-grow: 1; min-height: 3px; background: var(--accent); border-radius: 2px; opacity: 0.85; }

.split-bar { height: 8px; border-radius: 4px; overflow: hidden; display: flex; background: var(--card-border); }
.split-fill { height: 100%; }
.split-fill.in { background: var(--accent); }
.split-fill.out { background: var(--orange); }
.split-legend { display: flex; justify-content: space-between; margin-top: 10px; font-size: 12px; }
.split-legend b { color: var(--text); }
.dot-legend { display: inline-block; width: 8px; height: 8px; border-radius: 50%; margin-right: 5px; }
.dot-legend.in { background: var(--accent); }
.dot-legend.out { background: var(--orange); }

.spark-row { display: flex; align-items: flex-end; gap: 2px; height: 64px; }
.spark-pair { flex-grow: 1; display: flex; align-items: flex-end; gap: 1px; height: 100%; }
.spark-bar { flex-grow: 1; min-height: 2px; border-radius: 2px 2px 0 0; opacity: 0.9; }
.spark-bar.in { background: var(--accent); }
.spark-bar.out { background: var(--orange); }

.chart-big { display: flex; align-items: flex-end; gap: 2px; height: 140px; margin: 10px 0; }
.chart-big-bar { flex-grow: 1; min-height: 2px; background: var(--accent); border-radius: 2px 2px 0 0; opacity: 0.9; }
.chart-stats { display: flex; justify-content: space-between; font-size: 12px; color: var(--muted); margin-top: 4px; }

.alert-card { border-radius: 14px; padding: 14px; margin: 0 18px 10px; cursor: pointer; }
.alert-card.critical { background: var(--red-bg); border: 1px solid var(--red-border); }
.alert-card.warning, .alert-card.info { background: var(--card-bg); border: 1px solid var(--card-border); display: flex; gap: 10px; align-items: center; }
.alert-card.resolved { opacity: 0.55; }
.alert-title { font-size: 13px; font-weight: 600; flex-grow: 1; }
.alert-meta { font-size: 12px; color: #B8929A; margin: 8px 0 12px; }
.alert-actions { display: flex; gap: 8px; }
.btn { flex-grow: 1; padding: 9px 0; border-radius: 9px; border: none; font-size: 12px; font-weight: 600; cursor: pointer; }
.btn.danger { background: var(--red); color: #fff; }
.btn.secondary { background: var(--card-bg); border: 1px solid var(--card-border); color: var(--text); }
.btn.accent { background: var(--accent); color: var(--accent-text); }

.rows-card { background: var(--card-bg); border: 1px solid var(--card-border); border-radius: 14px; margin: 0 18px 18px; overflow: hidden; }
.row { display: flex; align-items: center; gap: 10px; padding: 12px 14px; border-bottom: 1px solid var(--row-border); }
.row:last-child { border-bottom: none; }
.row .name { flex-grow: 1; font-size: 13px; font-weight: 600; }
.row .sub { font-size: 11px; color: var(--muted); margin-top: 2px; }
.row .num { font-size: 12px; color: var(--text); }

.cameras-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 10px; margin: 0 18px 18px; }

.sheet-backdrop {
  position: fixed; inset: 0; background: rgba(0,0,0,0.55); z-index: 10;
}
.sheet {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 11;
  background: var(--card-bg); border: 1px solid var(--card-border);
  border-top-left-radius: 20px; border-top-right-radius: 20px;
  padding: 18px 18px 26px; max-height: 80vh; overflow-y: auto;
}
.sheet-handle { width: 36px; height: 4px; border-radius: 2px; background: var(--card-border); margin: 0 auto 16px; }
.sheet-step { margin-bottom: 14px; }
.sheet-step .label { font-size: 13px; font-weight: 600; margin-bottom: 6px; }
.sheet-code {
  background: var(--code-bg); border: 1px solid var(--card-border); border-radius: 10px;
  padding: 12px; font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 12.5px; color: var(--code-text); word-break: break-all; user-select: all;
}
.hidden { display: none; }

.theme-sheet-row { display: flex; gap: 10px; margin-bottom: 16px; }
.theme-opt {
  flex-grow: 1; padding: 12px; border-radius: 12px; border: 1px solid var(--card-border);
  background: var(--bg); text-align: center; font-size: 13px; font-weight: 600; cursor: pointer;
}
.theme-opt.active { border-color: var(--accent); color: var(--accent); }
.accent-row { display: flex; gap: 10px; margin-bottom: 10px; flex-wrap: wrap; }
.accent-swatch {
  width: 36px; height: 36px; border-radius: 50%; cursor: pointer; border: 2px solid transparent;
}
.accent-swatch.active { border-color: var(--text); }