:root {
  --bg1: #07121f;
  --bg2: #0c2234;
  --panel: rgba(10, 21, 34, 0.94);
  --panel2: rgba(8, 25, 42, 0.86);
  --line: rgba(143, 211, 255, 0.55);
  --text: #f1faff;
  --muted: #a9cbea;
  --mono: #eaf4ff;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  color: var(--text);
  font-family: Arial, "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(67, 131, 194, 0.18), transparent 38%),
    radial-gradient(circle at bottom right, rgba(0, 143, 168, 0.14), transparent 35%),
    linear-gradient(180deg, var(--bg2), var(--bg1));
}

.app-shell {
  min-height: 100%;
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: flex-start;
}

#headerTitle {
  margin: 0;
  font-size: 26px;
  letter-spacing: 0.02em;
}

.status-text {
  margin-top: 6px;
  color: var(--muted);
  font-size: 14px;
  white-space: pre-wrap;
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: flex-end;
}

.btn {
  min-width: 78px;
  min-height: 38px;
  padding: 8px 14px;
  border: 1px solid #9cd3ff;
  border-radius: 14px;
  color: #fff;
  background: linear-gradient(180deg, rgba(30,123,255,.95), rgba(19,85,183,.95));
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 4px 0 rgba(255,255,255,.08) inset, 0 4px 16px rgba(0,0,0,.22);
}
.btn:hover { filter: brightness(1.06); }
.btn:active { transform: translateY(1px); }
.btn-green { background: linear-gradient(180deg, #159a6c, #107755); border-color: #8cffd8; }
.btn-indigo { background: linear-gradient(180deg, #5a67ff, #4650c6); border-color: #b8beff; }
.btn-cyan { background: linear-gradient(180deg, #008fa8, #006a7d); border-color: #8debff; }
.btn-blue { background: linear-gradient(180deg, #1877f2, #0b5fcc); border-color: #9fd1ff; }
.btn-muted { background: linear-gradient(180deg, #4a5d73, #34404f); border-color: #aab8c7; }
.btn-close { background: linear-gradient(180deg, #a03d56, #7a2d40); border-color: #ffb3c3; }

.content-grid {
  display: grid;
  grid-template-rows: minmax(320px, 1fr) auto;
  gap: 18px;
  flex: 1;
  min-height: 0;
}

.graph-card, .info-card, .modal-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 26px;
  box-shadow: 0 18px 40px rgba(0,0,0,.28);
}

.graph-card {
  position: relative;
  padding: 0;
  min-height: 0;
  overflow: hidden;
}

#graphCanvas {
  width: 100%;
  height: 100%;
  display: block;
  touch-action: none;
}

.info-card {
  padding: 14px 16px;
  background: rgba(9,22,36,.96);
}

.info-card pre,
.metric-pre {
  margin: 0;
  color: var(--mono);
  font: 15px/1.45 Consolas, Menlo, monospace;
  white-space: pre-wrap;
  word-break: break-word;
}

.empty-state {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  text-align: center;
  font-size: 24px;
  font-weight: 700;
  background: rgba(8,25,42,.55);
}

.tooltip {
  position: fixed;
  width: 198px;
  min-height: 86px;
  padding: 10px 12px;
  border-radius: 14px;
  background: rgba(4,17,29,.94);
  border: 1px solid rgba(143, 204, 255, .95);
  font: 14px/1.45 Consolas, Menlo, monospace;
  color: #fff;
  pointer-events: none;
  z-index: 30;
}

.modal {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 18px;
  background: rgba(0,0,0,.68);
  z-index: 50;
}

.modal-card {
  width: min(92vw, 560px);
  padding: 22px;
}

.search-card { max-width: 560px; }
.metric-card { width: min(92vw, 700px); }
.modal-title {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 18px;
}
.modal-header-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}
.field {
  display: grid;
  grid-template-columns: 120px 1fr;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}
.field span {
  font-size: 18px;
  font-weight: 700;
  color: #ddeeff;
}
.field input {
  height: 40px;
  padding: 8px 12px;
  border-radius: 10px;
  border: 1px solid #7fc7ff;
  background: #03111d;
  color: #fff;
  font-size: 18px;
}
.modal-actions {
  margin-top: 18px;
  display: flex;
  justify-content: flex-end;
  gap: 12px;
}
.metric-main-grid {
  display: grid;
  gap: 8px;
  margin-bottom: 12px;
}
.metric-line {
  font-size: 20px;
  font-weight: 800;
}
.metric-rs { color: #48e0ff; }
.metric-rct { color: #5bff96; }
.metric-zw { color: #ff9a4d; }
.metric-tau { color: #ff7ac8; }
.metric-status {
  margin: 8px 0 14px;
  color: #ffe082;
  font-weight: 800;
}
.metric-pre.meta { margin-top: 12px; color: #bcdcff; }
.hidden { display: none !important; }

@media (max-width: 900px) {
  .app-shell { padding: 14px; gap: 12px; }
  .topbar { flex-direction: column; }
  #headerTitle { font-size: 32px; }
  .status-text { font-size: 18px; }
  .toolbar { justify-content: flex-start; gap: 10px; }
  .btn {
    min-width: 132px;
    min-height: 46px;
    font-size: 22px;
    border-radius: 18px;
  }
  .content-grid { grid-template-rows: minmax(280px, 1fr) auto; }
  .info-card pre, .metric-pre { font-size: 20px; }
  .modal-card { width: min(94vw, 760px); border-radius: 24px; }
  .modal-title { font-size: 28px; }
  .field { grid-template-columns: 150px 1fr; }
  .field span { font-size: 22px; }
  .field input { height: 56px; font-size: 24px; }
  .metric-line { font-size: 24px; }
  .metric-status { font-size: 18px; }
}