:root {
  --bg: #0c0f17;
  --panel: #141926;
  --panel-2: #1b2233;
  --panel-3: #222b41;
  --border: #28304a;
  --text: #e6e9f2;
  --muted: #97a0bb;
  --accent: #5b8cff;
  --accent-2: #36d399;
  --warn: #f4b740;
  --danger: #f06a6a;
  --proxy: #c084fc;
  --radius: 14px;
  --shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, sans-serif;
  background: radial-gradient(1200px 600px at 80% -10%, #182038 0%, var(--bg) 55%);
  color: var(--text);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* ===== Topbar ===== */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 28px; border-bottom: 1px solid var(--border);
  position: sticky; top: 0; background: rgba(12, 15, 23, 0.85);
  backdrop-filter: blur(10px); z-index: 10;
}
.brand { display: flex; align-items: center; gap: 14px; }
.logo { font-size: 28px; }
.topbar h1 { font-size: 18px; margin: 0; letter-spacing: -0.2px; }
.sub { margin: 2px 0 0; color: var(--muted); font-size: 13px; }
.topbar-actions { display: flex; gap: 8px; }

/* ===== Layout ===== */
.layout {
  display: grid; grid-template-columns: 320px 1fr; gap: 18px;
  padding: 22px 28px; align-items: start;
}
@media (max-width: 900px) { .layout { grid-template-columns: 1fr; } }

.panel {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 18px; box-shadow: var(--shadow);
}
.panel h2 { font-size: 15px; margin: 0 0 16px; letter-spacing: 0.2px; }
.panel-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; }
.panel-head h2 { margin: 0; }

/* ===== Fields ===== */
.field { margin-bottom: 18px; }
.field > label { display: flex; align-items: center; gap: 6px; font-size: 13px; color: var(--muted); margin-bottom: 8px; }
.hint {
  display: inline-flex; align-items: center; justify-content: center;
  width: 16px; height: 16px; border-radius: 50%; background: var(--panel-2);
  color: var(--muted); font-size: 11px; cursor: help; border: 1px solid var(--border);
}
.range-row { display: flex; gap: 10px; align-items: center; }
.range-row input[type="range"] { flex: 1; }
.range-row input[type="number"] { width: 88px; }
.note { font-size: 11.5px; color: var(--muted); margin: 8px 0 0; line-height: 1.45; }
.note code { background: var(--panel-2); padding: 1px 5px; border-radius: 5px; color: var(--accent-2); }
.model-note { margin-bottom: 0; }

input, textarea { color: var(--text); }
input[type="number"], input[type="text"], select {
  background: var(--panel-2); border: 1px solid var(--border); color: var(--text);
  border-radius: 8px; padding: 7px 9px; font-size: 13px; outline: none;
}
input[type="number"]:focus, input[type="text"]:focus, select:focus { border-color: var(--accent); }
input:disabled { color: var(--muted); -webkit-text-fill-color: var(--muted); opacity: 1; cursor: default; }

input[type="range"] {
  -webkit-appearance: none; appearance: none; height: 5px; border-radius: 4px;
  background: var(--panel-2); outline: none;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none; width: 16px; height: 16px; border-radius: 50%;
  background: var(--accent); cursor: pointer; border: 2px solid #0c0f17; box-shadow: 0 0 0 1px var(--accent);
}

/* ===== Segmented ===== */
.seg {
  display: inline-flex; background: var(--panel-2); border: 1px solid var(--border);
  border-radius: 9px; padding: 3px; gap: 3px; width: 100%;
}
.seg button {
  flex: 1; border: none; background: transparent; color: var(--muted);
  padding: 7px 10px; border-radius: 7px; cursor: pointer; font-size: 12.5px; transition: all 0.15s;
}
.seg button.active { background: var(--accent); color: #fff; font-weight: 600; }

/* ===== Buttons ===== */
button.primary { background: var(--accent); color: #fff; border: none; border-radius: 9px; padding: 9px 14px; cursor: pointer; font-size: 13px; font-weight: 600; }
button.primary.small { padding: 6px 11px; font-size: 12.5px; }
button.ghost { background: transparent; color: var(--muted); border: 1px solid var(--border); border-radius: 9px; padding: 8px 13px; cursor: pointer; font-size: 13px; }
button.ghost:hover { color: var(--text); border-color: var(--accent); }
button.primary:hover { filter: brightness(1.08); }

/* ===== Setups ===== */
.setups-panel { margin: 0 28px 18px; }
#setupsList {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(420px, 1fr));
  gap: 16px; align-items: start;
}
.setup-card {
  background: var(--panel-2); border: 1px solid var(--border);
  border-radius: 12px; padding: 16px; border-top: 3px solid var(--border);
}
.setup-head { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.setup-title { display: flex; align-items: center; gap: 9px; flex: 1; min-width: 0; }
.setup-dop { display: flex; align-items: center; gap: 6px; font-size: 11.5px; color: var(--muted); flex: none; }
.setup-dop input { width: 64px; }
.setup-title .dot { width: 11px; height: 11px; border-radius: 50%; flex: none; }
.setup-title input { background: transparent; border: none; font-size: 15px; font-weight: 700; width: 100%; border-bottom: 1px dashed transparent; padding: 2px 0; }
.setup-title input:focus { outline: none; border-bottom-color: var(--accent); }
.icon-btn { background: transparent; border: none; color: var(--muted); cursor: pointer; font-size: 16px; padding: 2px 4px; }
.icon-btn:hover { color: var(--danger); }

/* Service block within setup */
.service-block {
  background: var(--panel); border: 1px solid var(--border); border-left: 3px solid var(--accent);
  border-radius: 9px; padding: 12px; margin-bottom: 10px;
}
.svc-head { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; flex-wrap: wrap; }
.svc-head .svc-name { background: transparent; border: none; font-size: 13.5px; font-weight: 600; flex: 1; min-width: 90px; border-bottom: 1px dashed transparent; }
.svc-head .svc-name:focus { outline: none; border-bottom-color: var(--accent); }
.dop-field { display: flex; align-items: center; gap: 6px; font-size: 11.5px; color: var(--muted); }
.dop-field input { width: 72px; }

.groups { margin-top: 4px; }
.group-row {
  display: grid; grid-template-columns: minmax(90px, 1fr) 70px 96px 24px;
  gap: 6px; align-items: center; margin-bottom: 6px;
}
.group-row input { padding: 6px 7px; font-size: 12px; }
.group-row .g-name { background: var(--panel-2); }
.col-head { font-size: 10px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.5px; }
.add-group { background: transparent; border: 1px dashed var(--border); color: var(--muted); border-radius: 7px; padding: 5px 9px; cursor: pointer; font-size: 11.5px; margin-top: 2px; }
.add-group:hover { color: var(--proxy); border-color: var(--proxy); }

.svc-metrics { margin-top: 9px; padding-top: 9px; border-top: 1px solid var(--border); font-size: 11px; color: var(--muted); display: flex; flex-wrap: wrap; gap: 10px; }
.svc-metrics b { color: var(--text); font-weight: 600; }

.add-svc { background: transparent; border: 1px dashed var(--border); color: var(--muted); border-radius: 8px; padding: 7px 11px; cursor: pointer; font-size: 12.5px; width: 100%; margin-bottom: 12px; }
.add-svc:hover { color: var(--accent); border-color: var(--accent); }

.setup-metrics {
  margin-top: 4px; padding: 11px 13px; border-radius: 9px; background: var(--panel-3);
  font-size: 12px; display: flex; flex-wrap: wrap; gap: 14px; align-items: center;
}
.setup-metrics .big { font-size: 18px; font-weight: 700; }
.setup-metrics .lbl { color: var(--muted); font-size: 10.5px; text-transform: uppercase; letter-spacing: 0.5px; display: block; }

/* ===== Compare / results ===== */
.bars { display: flex; flex-direction: column; gap: 12px; margin-bottom: 16px; }
.bar-item .bar-label { display: flex; justify-content: space-between; font-size: 12.5px; margin-bottom: 5px; gap: 8px; }
.bar-item .bar-label .nm { display: flex; align-items: center; gap: 7px; font-weight: 600; }
.bar-item .bar-label .nm .dot { width: 9px; height: 9px; border-radius: 50%; }
.bar-item .bar-label .v { color: var(--muted); }
.bar-track { height: 10px; background: var(--panel-2); border-radius: 6px; overflow: hidden; position: relative; }
.bar-fill { height: 100%; border-radius: 6px; transition: width 0.25s; }
.bar-ceiling { position: absolute; top: -2px; bottom: -2px; width: 2px; background: var(--text); opacity: 0.5; }

.bottleneck { font-size: 12px; padding: 11px 13px; border-radius: 9px; background: var(--panel-2); border: 1px solid var(--border); line-height: 1.5; }
.bottleneck div { margin: 3px 0; }
.bottleneck b { color: var(--warn); }
.bottleneck .ok { color: var(--accent-2); }

/* ===== Charts ===== */
.charts-panel { margin: 0 28px 18px; }
.charts-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(360px, 1fr)); gap: 18px; }
.chart-box { background: var(--panel-2); border: 1px solid var(--border); border-radius: 12px; padding: 14px; }
.chart-box h3 { margin: 0 0 10px; font-size: 13px; font-weight: 600; color: var(--text); }
.chart-wrap { height: 300px; position: relative; }

/* ===== Footer ===== */
.foot { display: flex; align-items: center; justify-content: space-between; padding: 18px 28px 40px; color: var(--muted); font-size: 12px; gap: 20px; flex-wrap: wrap; }
.foot summary { cursor: pointer; }
.formula { margin-top: 10px; max-width: 760px; line-height: 1.55; }
.formula code { background: var(--panel-2); padding: 1px 6px; border-radius: 5px; color: var(--accent-2); }
.formula ul { padding-left: 18px; }
.copyright { white-space: nowrap; }