:root {
  --bg-dark: #0a0f16;
  --bg-panel: #0f1620;
  --bg-card: #131c27;
  --bg-input: #0b1119;
  --border: #223142;
  --border-active: #355b7a;
  --text: #e9eef5;
  --text-dim: #88a0b5;
  --text-label: #6f869a;
  --accent: #00d6a2;
  --accent-soft: rgba(0, 214, 162, 0.15);
  --warn: #ffc857;
  --danger: #ff5d5d;
  --ok: #00d68f;
  --blue: #00aaff;
  --orange: #ff8855;
  --cyan: #00e5ff;
  --amber: #ffc857;
  --red: #ff5d5d;
}
* { box-sizing: border-box; }
html, body { min-height: 100%; margin: 0; }
body {
  font-family: "Rajdhani", sans-serif;
  background: radial-gradient(circle at 75% 0%, rgba(0, 229, 255, 0.09), transparent 28%), radial-gradient(circle at 10% 15%, rgba(0, 214, 162, 0.075), transparent 34%), var(--bg-dark);
  color: var(--text);
  line-height: 1.4;
}
button, input, select { font: inherit; }
.grid-bg {
  position: fixed; inset: 0;
  background-image: linear-gradient(rgba(0, 214, 162, 0.035) 1px, transparent 1px), linear-gradient(90deg, rgba(0, 214, 162, 0.035) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}
.app { position: relative; z-index: 1; min-height: 100vh; }
.header {
  display: grid; grid-template-columns: minmax(270px, 1fr) auto auto; gap: 18px; align-items: center;
  padding: 18px 24px; border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(0, 214, 162, 0.05), rgba(10, 15, 22, 0.78));
  backdrop-filter: blur(10px);
}
.logo { display: flex; align-items: center; gap: 14px; }
.logo-icon { width: 46px; height: 46px; color: var(--cyan); filter: drop-shadow(0 0 12px rgba(0, 229, 255, .18)); }
.logo-title { font-size: 30px; font-weight: 700; letter-spacing: 0.16em; color: var(--accent); text-shadow: 0 0 18px var(--accent-soft); }
.logo-sub { margin-top: -3px; font-size: 11px; letter-spacing: 0.27em; color: var(--text-dim); }
.header-actions, .header-badges { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.btn-header, .badge {
  border: 1px solid var(--border); background: var(--bg-card); color: var(--text-dim); letter-spacing: 0.1em; text-transform: uppercase;
  cursor: pointer; transition: border-color .2s, color .2s, transform .2s, background .2s;
}
.btn-header { padding: 8px 12px; font-size: 12px; font-weight: 700; }
.btn-header:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-1px); }
.btn-header.ghost { color: var(--warn); }
.badge { display: inline-flex; align-items: center; gap: 8px; padding: 8px 12px; font-size: 11px; font-weight: 700; }
.badge-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 8px var(--accent); }
.badge-dot.warn { background: var(--warn); box-shadow: 0 0 8px var(--warn); }
.badge-dot.orange { background: var(--orange); box-shadow: 0 0 8px var(--orange); }
.badge-dot.cyan { background: var(--cyan); box-shadow: 0 0 8px var(--cyan); }
.main { display: grid; grid-template-columns: minmax(360px, .9fr) minmax(520px, 1.1fr); gap: 22px; padding: 22px; max-width: 1600px; margin: 0 auto; }
.inputs-panel, .results-panel { display: flex; flex-direction: column; gap: 16px; }
.input-card, .result-card { background: linear-gradient(180deg, rgba(255,255,255,.018), transparent), var(--bg-card); border: 1px solid var(--border); box-shadow: 0 18px 45px rgba(0,0,0,.24); overflow: hidden; }
.input-card { border-left-width: 4px; }
.accent-amber { border-left-color: var(--amber); }
.accent-blue { border-left-color: var(--blue); }
.accent-orange { border-left-color: var(--orange); }
.accent-cyan { border-left-color: var(--cyan); }
summary, .card-heading { list-style: none; padding: 15px 18px; border-bottom: 1px solid var(--border); color: var(--text); font-weight: 700; letter-spacing: .12em; text-transform: uppercase; cursor: pointer; }
summary::-webkit-details-marker { display: none; }
summary span { color: var(--text-label); font-family: "JetBrains Mono", monospace; margin-right: 10px; }
.card-body { padding: 16px; display: grid; gap: 14px; }
.two-up { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.full { grid-column: 1 / -1; }
.field { position: relative; display: grid; gap: 7px; color: var(--text-label); font-size: 12px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; }
.field input, .field select { width: 100%; padding: 12px 56px 12px 12px; background: var(--bg-input); border: 1px solid var(--border); color: var(--text); font-family: "JetBrains Mono", monospace; outline: none; }
.field select { padding-right: 12px; }
.field input:focus, .field select:focus { border-color: var(--border-active); box-shadow: 0 0 0 3px rgba(0,214,162,.08); }
.field span { position: absolute; right: 11px; bottom: 11px; color: var(--text-label); font-size: 11px; font-family: "JetBrains Mono", monospace; text-transform: none; letter-spacing: 0; }
.field input[readonly] { color: var(--cyan); border-color: rgba(0,229,255,.24); }
.toggle-row { display: flex; align-items: center; gap: 12px; color: var(--text); font-weight: 700; letter-spacing: .12em; }
.toggle-row input { display: none; }
.toggle-row i { width: 64px; height: 32px; border: 1px solid var(--border); background: var(--bg-input); position: relative; box-shadow: inset 0 0 18px rgba(0,0,0,.3); }
.toggle-row i::before { content: ""; position: absolute; top: 4px; left: 4px; width: 22px; height: 22px; background: var(--accent); box-shadow: 0 0 14px var(--accent-soft); transition: transform .2s; }
.toggle-row input:checked + i::before { transform: translateX(32px); background: var(--cyan); }
.note { margin: 0; color: var(--text-dim); font-size: 13px; }
.note.warn { color: var(--warn); }
.hidden { display: none !important; }
.hero { padding-bottom: 18px; }
.state-source { margin: 16px 18px 0; padding: 13px 14px; border: 1px solid rgba(0,229,255,.22); background: rgba(0,229,255,.07); display: flex; justify-content: space-between; gap: 12px; align-items: center; }
.state-source span { color: var(--text-label); font-size: 12px; font-weight: 700; letter-spacing: .12em; }
.state-source strong { color: var(--cyan); font-family: "JetBrains Mono", monospace; font-size: 13px; }
.meters { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; padding: 18px; }
.meters div { padding: 15px; background: var(--bg-input); border: 1px solid var(--border); min-height: 102px; }
.meters span { display: block; color: var(--text-label); font-size: 12px; letter-spacing: .12em; text-transform: uppercase; font-weight: 700; }
.meters strong { display: block; margin-top: 12px; color: var(--accent); font-family: "JetBrains Mono", monospace; font-size: clamp(21px, 2.6vw, 32px); line-height: 1; }
.meters em { display: block; margin-top: 7px; color: var(--text-dim); font-style: normal; font-family: "JetBrains Mono", monospace; font-size: 11px; }
.validation { margin: 14px 18px 0; padding: 12px; border: 1px solid rgba(255,93,93,.38); background: rgba(255,93,93,.1); color: var(--danger); font-weight: 700; }
.reference-block { margin: 0 18px; padding: 14px; border: 1px solid rgba(0,214,162,.22); background: var(--accent-soft); color: var(--text-dim); font-size: 13px; }
.table-wrap { overflow-x: auto; padding: 8px 0; }
table { width: 100%; border-collapse: collapse; min-width: 760px; }
th, td { padding: 12px 14px; border-bottom: 1px solid var(--border); text-align: left; vertical-align: top; }
th { color: var(--text-label); font-size: 11px; letter-spacing: .12em; text-transform: uppercase; background: rgba(0,0,0,.16); position: sticky; top: 0; }
td { color: var(--text-dim); font-size: 13px; }
td:nth-child(2), td:nth-child(3) { font-family: "JetBrains Mono", monospace; color: var(--text); white-space: nowrap; }
.chart-wrap { padding: 16px; }
.chart-wrap svg { width: 100%; display: block; }
.chart-bg { fill: #0b1119; stroke: #223142; }
.grid-line { stroke: rgba(136,160,181,.16); stroke-width: 1; }
.axis { stroke: rgba(233,238,245,.5); stroke-width: 1.5; }
.rh-curve { fill: none; stroke: rgba(0,229,255,.55); stroke-width: 1.4; }
.crosshair { stroke: rgba(255,200,87,.55); stroke-width: 1; stroke-dasharray: 4 5; }
.state-dot { fill: #00d6a2; stroke: #e9eef5; stroke-width: 2; filter: drop-shadow(0 0 8px rgba(0,214,162,.55)); }
.chart-label, .axis-label { fill: #88a0b5; font-family: "JetBrains Mono", monospace; font-size: 11px; }
.state-label { fill: #e9eef5; font-family: "JetBrains Mono", monospace; font-size: 12px; font-weight: 700; }
@media (max-width: 1080px) { .header { grid-template-columns: 1fr; } .main { grid-template-columns: 1fr; } }
@media (max-width: 680px) { .main { padding: 12px; } .logo-title { font-size: 24px; } .two-up, .meters { grid-template-columns: 1fr; } .state-source { align-items: flex-start; flex-direction: column; } }
@media print { body { background: #fff; color: #000; } .grid-bg, .header-actions, .inputs-panel { display: none; } .main { display: block; padding: 0; } .result-card { box-shadow: none; border-color: #999; break-inside: avoid; } details:not([open]) > *:not(summary) { display: block; } }