* { box-sizing: border-box; }

:root {
  color-scheme: dark;
  --bg-0: #0a0e1a;
  --bg-1: #11162a;
  --bg-2: #161c35;
  --card: rgba(255, 255, 255, 0.045);
  --card-hover: rgba(255, 255, 255, 0.075);
  --border: rgba(255, 255, 255, 0.09);
  --border-soft: rgba(255, 255, 255, 0.06);
  --text: #eef1f8;
  --text-dim: #93a0bd;
  --text-faint: #5d6986;
  --accent: #5b8cff;
  --accent-2: #8b6bff;
  --accent-glow: rgba(91, 140, 255, 0.35);
  --success: #36d399;
  --warning: #ffb454;
  --danger: #ff5d7a;
  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --overlay-1: rgba(255, 255, 255, 0.04);
  --overlay-2: rgba(255, 255, 255, 0.05);
  --overlay-3: rgba(255, 255, 255, 0.06);
  --overlay-4: rgba(255, 255, 255, 0.1);
  --topbar-bg: rgba(10, 14, 26, 0.7);
  --blob-1: #1c2550;
  --blob-2: #2a1a45;
  --title-grad-1: #ffffff;
  --title-grad-2: #a9b8ff;
  --code-bg: rgba(255, 255, 255, 0.06);
  --code-text: #c9d4ff;
}

:root[data-theme="light"] {
  color-scheme: light;
  --bg-0: #eef1f8;
  --bg-1: #ffffff;
  --bg-2: #ffffff;
  --card: rgba(20, 30, 70, 0.035);
  --card-hover: rgba(20, 30, 70, 0.06);
  --border: rgba(20, 30, 70, 0.1);
  --border-soft: rgba(20, 30, 70, 0.07);
  --text: #161b2e;
  --text-dim: #4d5876;
  --text-faint: #828dac;
  --accent-glow: rgba(63, 100, 224, 0.25);
  --overlay-1: rgba(20, 30, 70, 0.035);
  --overlay-2: rgba(20, 30, 70, 0.045);
  --overlay-3: rgba(20, 30, 70, 0.05);
  --overlay-4: rgba(20, 30, 70, 0.09);
  --topbar-bg: rgba(255, 255, 255, 0.78);
  --blob-1: #dbe4ff;
  --blob-2: #ece0ff;
  --title-grad-1: #1c2550;
  --title-grad-2: #5b6fdb;
  --code-bg: rgba(20, 30, 70, 0.06);
  --code-text: #324bb5;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background: radial-gradient(circle at 15% -10%, var(--blob-1) 0%, transparent 45%),
              radial-gradient(circle at 100% 0%, var(--blob-2) 0%, transparent 40%),
              linear-gradient(160deg, var(--bg-0) 0%, var(--bg-1) 55%, var(--bg-0) 100%);
  background-attachment: fixed;
  transition: background 0.2s ease, color 0.2s ease;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 28px;
  background: var(--topbar-bg);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-soft);
}
.topbar h1 {
  margin: 0;
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  background: linear-gradient(120deg, var(--title-grad-1), var(--title-grad-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

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

.theme-toggle {
  border: 1px solid var(--border-soft);
  background: var(--overlay-1);
  color: var(--text);
  width: 36px;
  height: 36px;
  border-radius: 999px;
  cursor: pointer;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s ease;
}
.theme-toggle:hover { background: var(--overlay-3); }

.status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  color: var(--text-dim);
  background: var(--overlay-1);
  border: 1px solid var(--border-soft);
  padding: 7px 14px;
  border-radius: 999px;
}
.dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; flex-shrink: 0; }
.dot-live { background: var(--success); box-shadow: 0 0 0 0 rgba(54, 211, 153, 0.6); animation: pulse 2s infinite; }
.dot-stale { background: var(--danger); }
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(54, 211, 153, 0.5); }
  70% { box-shadow: 0 0 0 6px rgba(54, 211, 153, 0); }
  100% { box-shadow: 0 0 0 0 rgba(54, 211, 153, 0); }
}

.tabs {
  display: inline-flex;
  gap: 2px;
  margin: 22px 28px 0;
  padding: 4px;
  background: var(--overlay-1);
  border: 1px solid var(--border-soft);
  border-radius: 999px;
}
.tab-btn {
  border: none;
  background: none;
  padding: 9px 20px;
  font-size: 0.88rem;
  font-weight: 500;
  cursor: pointer;
  color: var(--text-dim);
  border-radius: 999px;
  transition: color 0.15s, background 0.15s;
}
.tab-btn.active {
  color: #fff;
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  box-shadow: 0 4px 16px var(--accent-glow);
}

main { padding: 22px 28px 60px; max-width: 1180px; margin: 0 auto; }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
  gap: 14px;
  margin-bottom: 22px;
}
.sensor-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 18px 18px 16px;
  cursor: grab;
  transition: transform 0.18s ease, background 0.18s ease, box-shadow 0.18s ease, border-color 0.12s ease;
}
.sensor-card:hover {
  transform: translateY(-3px);
  background: var(--card-hover);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.35);
}
.sensor-card.dragging { opacity: 0.4; cursor: grabbing; }
.sensor-card.drag-over { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-glow); }
.sensor-card .icon { font-size: 1.5rem; opacity: 0.95; margin-bottom: 10px; display: block; }
.sensor-card .label {
  font-size: 0.72rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 6px;
  font-weight: 600;
}
.sensor-card .value { font-size: 1.7rem; font-weight: 700; letter-spacing: -0.01em; }
.sensor-card .unit { font-size: 0.92rem; color: var(--text-dim); margin-left: 3px; font-weight: 500; }

.chart-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
}
.chart-header { display: flex; gap: 10px; align-items: center; margin-bottom: 14px; flex-wrap: wrap; color: var(--text-dim); font-size: 0.85rem; }
.chart-header select {
  padding: 7px 10px;
  background: var(--overlay-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 0.85rem;
}
#chart { width: 100%; height: 280px; display: block; }

.rules-header { margin-bottom: 18px; }
.rules-list { display: flex; flex-direction: column; gap: 10px; }
.rule-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius-md);
  padding: 16px 18px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
  transition: background 0.15s ease;
}
.rule-card:hover { background: var(--card-hover); }
.rule-card.disabled { opacity: 0.5; border-left-color: var(--text-faint); }
.rule-card.prio--1 { border-left-color: var(--text-faint); }
.rule-card.prio-0 { border-left-color: var(--accent); }
.rule-card.prio-1 { border-left-color: var(--warning); }
.rule-card.prio-2 { border-left-color: var(--danger); }

.rule-top { display: flex; align-items: center; gap: 10px; margin-bottom: 5px; }
.rule-card .rule-info h3 { margin: 0; font-size: 1rem; font-weight: 600; }
.rule-card .rule-summary { font-size: 0.83rem; color: var(--text-dim); line-height: 1.5; }
.rule-card .rule-actions { display: flex; gap: 8px; flex-shrink: 0; }

.status-pill {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  padding: 3px 9px;
  border-radius: 999px;
}
.status-pill.on { background: rgba(54, 211, 153, 0.15); color: var(--success); }
.status-pill.off { background: rgba(93, 105, 134, 0.2); color: var(--text-faint); }

.empty-hint { color: var(--text-faint); font-style: italic; padding: 16px 0; }

.btn {
  border: none;
  border-radius: var(--radius-sm);
  padding: 8px 16px;
  cursor: pointer;
  font-size: 0.86rem;
  font-weight: 500;
  transition: filter 0.12s, transform 0.08s;
}
.btn:active { transform: scale(0.97); }
.btn-primary { background: linear-gradient(120deg, var(--accent), var(--accent-2)); color: #fff; box-shadow: 0 4px 14px var(--accent-glow); }
.btn-primary:hover { filter: brightness(1.1); }
.btn-secondary { background: var(--overlay-3); color: var(--text); border: 1px solid var(--border); }
.btn-secondary:hover { background: var(--overlay-4); }
.btn-danger { background: rgba(255, 93, 122, 0.12); color: var(--danger); border: 1px solid rgba(255, 93, 122, 0.25); }
.btn-danger:hover { background: rgba(255, 93, 122, 0.2); }

.modal-backdrop {
  position: fixed; inset: 0; background: rgba(5, 7, 15, 0.65);
  display: flex; align-items: center; justify-content: center;
  padding: 20px; overflow-y: auto; z-index: 10;
  backdrop-filter: blur(4px);
}
.modal-backdrop.hidden { display: none; }
.modal {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 20px; padding: 26px;
  width: 100%; max-width: 580px; max-height: 90vh; overflow-y: auto;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.5);
}
.modal h2 { margin: 0 0 18px; font-size: 1.15rem; }
.modal form label {
  display: block; margin-bottom: 14px; font-size: 0.86rem; color: var(--text-dim);
}
.modal form input[type=text], .modal form input[type=number], .modal form select, .modal form textarea {
  width: 100%; padding: 9px 11px; margin-top: 5px;
  background: var(--overlay-1);
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  font-size: 0.9rem; color: var(--text);
}
.modal form input:focus, .modal form select:focus, .modal form textarea:focus {
  outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-glow);
}
.modal form textarea { min-height: 64px; resize: vertical; }
.checkbox-row { display: flex; align-items: center; gap: 8px; }
.checkbox-row input { width: auto; margin: 0; accent-color: var(--accent); }

.cooldown-row { margin-bottom: 14px; font-size: 0.86rem; color: var(--text-dim); }
.cooldown-fields { display: flex; gap: 8px; margin-top: 5px; }
.cooldown-fields input { flex: 1 1 auto; min-width: 0; }
.cooldown-fields select { flex: 1 1 auto; min-width: 0; }

fieldset { border: 1px solid var(--border); border-radius: var(--radius-md); margin-bottom: 14px; padding: 14px; }
fieldset legend { font-size: 0.78rem; color: var(--text-dim); padding: 0 6px; text-transform: uppercase; letter-spacing: 0.03em; }

.condition-row {
  display: flex; flex-wrap: wrap; gap: 10px; align-items: flex-end;
  margin-bottom: 12px; padding-bottom: 12px; border-bottom: 1px dashed var(--border-soft);
}
.condition-row select, .condition-row input { width: auto; flex: 1 1 auto; min-width: 110px; margin-top: 0; }
.condition-row .cond-threshold-fields, .condition-row .cond-trend-fields, .condition-row .cond-compare-fields {
  display: flex; gap: 10px; flex-wrap: wrap; flex: 1 1 100%; align-items: flex-end;
}
.condition-row .hidden { display: none; }
.modal form label.mini-field { display: flex; flex-direction: column; gap: 4px; margin: 0; flex: 1 1 auto; min-width: 110px; }
.mini-label { font-size: 0.68rem; color: var(--text-faint); font-weight: 700; text-transform: uppercase; letter-spacing: 0.03em; }
.btn-remove-condition {
  border: none; background: rgba(255, 93, 122, 0.12); color: var(--danger); border-radius: var(--radius-sm);
  width: 30px; height: 30px; cursor: pointer; flex-shrink: 0; align-self: flex-end;
}
.btn-remove-condition:hover { background: rgba(255, 93, 122, 0.22); }

.legend { margin: -6px 0 14px; font-size: 0.83rem; color: var(--text-dim); }
.legend summary { cursor: pointer; color: var(--accent); }
.legend ul { margin: 10px 0 0; padding-left: 18px; }
.legend li { margin-bottom: 4px; }

.modal-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 20px; }
.form-error {
  background: rgba(255, 93, 122, 0.12); color: var(--danger); border: 1px solid rgba(255, 93, 122, 0.25);
  padding: 9px 14px; border-radius: var(--radius-sm); margin-bottom: 14px; font-size: 0.85rem;
}
.form-error.hidden { display: none; }

small { color: var(--text-faint); }
code { background: var(--code-bg); color: var(--code-text); padding: 1px 6px; border-radius: 5px; font-size: 0.85em; }