:root {
  --bg: #090b10;
  --panel: #11151d;
  --panel-2: #181d28;
  --border: rgba(255, 255, 255, 0.08);
  --text: #f3f5f7;
  --muted: #a4adba;
  --accent: #3b82f6;
  --shadow: 0 12px 34px rgba(0, 0, 0, 0.28);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

body { padding: 18px; }

.app {
  max-width: 1380px;
  margin: 0 auto;
  display: grid;
  gap: 10px;
}

.panel {
  background: linear-gradient(180deg, rgba(17,21,29,0.98), rgba(12,15,22,0.98));
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 14px 16px;
  box-shadow: var(--shadow);
}

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

.eyebrow, .label, .subtle { color: var(--muted); }
.eyebrow, .label {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.72rem;
}

h1 { margin: 4px 0 4px; font-size: clamp(1.4rem, 2.5vw, 1.9rem); }

button, select, input[type="range"] { font: inherit; }

button, select {
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--panel-2);
  color: var(--text);
  padding: 8px 14px;
}

button { cursor: pointer; }
button:hover, select:hover { filter: brightness(1.06); }
button.active { background: var(--accent); border-color: transparent; }
button.ghost { background: transparent; }

.controls { display: grid; gap: 12px; }
.hazards { display: flex; flex-wrap: wrap; gap: 8px; }

.slider-block { display: grid; gap: 8px; }

.slider-top {
  display: flex;
  align-items: center;
  gap: 8px;
}

.slider-top input[type="range"] {
  flex: 1;
}

input[type="range"] {
  accent-color: var(--accent);
}

button.compact {
  padding: 6px 12px;
  min-width: 0;
  font-size: 0.9rem;
}

.slider-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  font-size: 0.85rem;
  flex-wrap: wrap;
}

.status-row {
  display: flex;
  gap: 24px;
  font-size: 0.85rem;
}

.viewer {
  padding: 14px;
  overflow: hidden;
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(230, 234, 240, 0.95), rgba(214, 220, 229, 0.98));
}

.plot-wrap {
  position: relative;
  background: #eef1f5;
  border-radius: 18px;
  overflow: hidden;
}

#plotCanvas {
  display: block;
  width: 100%;
  height: auto;
  background: #ffffff;
  border-radius: 18px;
}

.empty-state {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: var(--muted);
  padding: 60px 24px;
  text-align: center;
  background: rgba(5, 7, 11, 0.45);
  border-radius: 18px;
  font-size: 0.9rem;
  pointer-events: none;
}


@media (max-width: 640px) {
  body { padding: 10px; }
  .topbar { flex-direction: column; }
  .slider-top, .slider-meta { flex-wrap: wrap; }
}