:root {
  --bg: #07100f;
  --panel: rgba(12, 25, 24, 0.78);
  --panel-strong: rgba(17, 40, 38, 0.92);
  --ink: #edf8f3;
  --muted: #87a69d;
  --line: rgba(130, 255, 220, 0.16);
  --accent: #34f5c5;
  --accent-2: #ffbf5f;
  --danger: #ff6b6b;
  --good: #4ff0a3;
  --warning: #ffbf5f;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.38);
  --font-body: "LXGW WenKai", "Noto Serif SC", "Songti SC", "STSong", serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", "Consolas", monospace;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { min-height: 100%; background: var(--bg); color: var(--ink); }
body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  background:
    radial-gradient(circle at 14% 9%, rgba(52, 245, 197, 0.22), transparent 31rem),
    radial-gradient(circle at 92% 10%, rgba(255, 191, 95, 0.18), transparent 30rem),
    linear-gradient(135deg, #040807 0%, #081816 56%, #0e1513 100%);
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(52, 245, 197, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(52, 245, 197, 0.045) 1px, transparent 1px);
  background-size: 38px 38px;
  mask-image: linear-gradient(to bottom, black, transparent 86%);
}

.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.16;
  mix-blend-mode: screen;
  background-image: repeating-radial-gradient(circle at 17% 31%, rgba(255,255,255,.18) 0 1px, transparent 1px 4px);
}

button, input, select, textarea { font: inherit; }
button {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.72rem 1rem;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.045);
  cursor: pointer;
  transition: transform .18s ease, border-color .18s ease, background .18s ease;
}
button:hover { transform: translateY(-1px); border-color: rgba(52, 245, 197, .58); background: rgba(52, 245, 197, .08); }
button.primary { color: #06211c; background: linear-gradient(135deg, var(--accent), #b9ffe9); border-color: transparent; font-weight: 800; }
button.warning { border-color: rgba(255,191,95,.5); color: var(--warning); }
button.danger { color: var(--danger); border-color: rgba(255,107,107,.35); }
input, select, textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: .82rem .95rem;
  color: var(--ink);
  background: rgba(3, 13, 12, .72);
  outline: none;
}
textarea { resize: vertical; }
label { display: grid; gap: .42rem; color: var(--muted); font-size: .92rem; }
code, pre, .big-number, .stat-tile strong { font-family: var(--font-mono); }
code { color: #b9ffe9; }
pre { white-space: pre-wrap; word-break: break-word; }

.app-frame { display: grid; grid-template-columns: 230px minmax(0, 1fr); min-height: 100vh; position: relative; z-index: 1; }
.side-rail {
  position: sticky;
  top: 0;
  height: 100vh;
  padding: 1.2rem;
  border-right: 1px solid var(--line);
  background: rgba(2, 10, 9, .55);
  backdrop-filter: blur(20px);
  display: flex;
  flex-direction: column;
  gap: 1.4rem;
}
.brand { display: grid; gap: .1rem; padding: .7rem .6rem 1rem; border-bottom: 1px solid var(--line); }
.brand b { font: 900 1.72rem/1 var(--font-mono); letter-spacing: -.08em; color: var(--accent); }
.brand span { color: var(--muted); }
.side-rail nav { display: grid; gap: .52rem; }
.nav-item { justify-content: flex-start; display: flex; align-items: center; gap: .66rem; border-radius: 18px; text-align: left; }
.nav-item span { color: var(--accent); font-family: var(--font-mono); }
.nav-item.active { background: rgba(52, 245, 197, .15); border-color: rgba(52, 245, 197, .48); }
.side-rail footer { margin-top: auto; color: var(--muted); display: grid; gap: .2rem; font-size: .88rem; }
.side-rail footer strong { color: var(--ink); }
.workspace { padding: clamp(1rem, 3vw, 2.4rem); }

.page-header { display: flex; justify-content: space-between; gap: 1rem; margin: 0 0 1.2rem; align-items: flex-end; }
.page-header h1 { margin: .15rem 0; font-size: clamp(2rem, 5vw, 4.8rem); letter-spacing: -.08em; line-height: .92; }
.page-header p { color: var(--muted); max-width: 46rem; margin: 0; }
.kicker { color: var(--accent) !important; font: 800 .78rem/1 var(--font-mono); letter-spacing: .18em; text-transform: uppercase; }
.header-actions { display: flex; gap: .6rem; flex-wrap: wrap; }

.panel, .stat-tile, .rule-card, .log-row, .empty-state, .loading-card {
  border: 1px solid var(--line);
  border-radius: 28px;
  background: linear-gradient(145deg, var(--panel), rgba(4, 14, 13, .72));
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}
.panel { padding: 1.15rem; }
.panel-head { display: flex; justify-content: space-between; gap: .8rem; align-items: center; margin-bottom: 1rem; }
.panel-head h2 { margin: 0; font-size: 1.35rem; }
.panel-head p { margin: 0; }
.signal-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: .85rem; margin-bottom: .85rem; }
.stat-tile { padding: 1rem; position: relative; overflow: hidden; }
.stat-tile::after { content: ""; position: absolute; inset: auto -10% -40% 20%; height: 80px; background: radial-gradient(circle, currentColor, transparent 70%); opacity: .14; }
.stat-tile span, .stat-tile em { display: block; color: var(--muted); font-style: normal; }
.stat-tile strong { display: block; margin: .65rem 0 .4rem; font-size: clamp(1.45rem, 3vw, 2.5rem); letter-spacing: -.08em; }
.stat-good { color: var(--good); }
.stat-warning { color: var(--warning); }
.stat-bad { color: var(--danger); }
.stat-neutral { color: var(--accent); }
.two-column { display: grid; grid-template-columns: 1.05fr .95fr; gap: .85rem; margin-bottom: .85rem; }
.big-number { font-size: clamp(4rem, 15vw, 9rem); line-height: .9; letter-spacing: -.12em; color: var(--accent); }
.quick-actions, .card-actions, .filter-panel { display: flex; flex-wrap: wrap; gap: .58rem; align-items: center; }
.filter-panel input { max-width: 34rem; }
.filter-note, .muted { color: var(--muted); }

.pill { display: inline-flex; align-items: center; gap: .38rem; border: 1px solid var(--line); border-radius: 999px; padding: .36rem .58rem; color: var(--muted); font: 700 .78rem/1 var(--font-mono); }
.pill i { width: .48rem; height: .48rem; border-radius: 99px; background: currentColor; box-shadow: 0 0 14px currentColor; }
.pill-good { color: var(--good); border-color: rgba(79,240,163,.3); }
.pill-warning { color: var(--warning); border-color: rgba(255,191,95,.3); }
.pill-bad { color: var(--danger); border-color: rgba(255,107,107,.35); }
.pill-muted { color: var(--muted); }
.status-lanes { display: grid; gap: .7rem; }
.status-lanes div { display: flex; align-items: center; gap: .7rem; color: var(--muted); }

.rule-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(290px, 1fr)); gap: .85rem; margin-top: .85rem; }
.rule-card { padding: 1rem; display: grid; gap: .85rem; }
.rule-card-top { display: flex; align-items: flex-start; justify-content: space-between; gap: .7rem; }
.rule-card small { color: var(--muted); font-family: var(--font-mono); }
.rule-card h3 { margin: .2rem 0 0; }
.rule-route { display: flex; gap: .5rem; align-items: center; color: var(--muted); }
.chips { display: flex; flex-wrap: wrap; gap: .45rem; min-height: 2rem; }
.chips span { border: 1px solid rgba(52,245,197,.25); border-radius: 999px; padding: .34rem .55rem; background: rgba(52,245,197,.08); }
.chips em { color: var(--muted); }
.log-list { display: grid; gap: .66rem; }
.log-list.compact .log-row { padding: .72rem; }
.log-row { padding: .9rem; }
.log-row div { display: flex; align-items: center; gap: .6rem; }
.log-row p { margin: .5rem 0; color: var(--ink); }
.log-row small { color: var(--muted); }
.log-row pre { border-left: 2px solid var(--danger); padding-left: .7rem; color: #ffd0d0; }

.studio-layout { display: grid; grid-template-columns: minmax(0, 1fr) 370px; gap: .85rem; align-items: start; }
.studio-main { display: grid; gap: 1rem; }
.step-block { display: grid; grid-template-columns: 56px minmax(0, 1fr); gap: .8rem; padding: .9rem; border: 1px solid var(--line); border-radius: 24px; background: rgba(255,255,255,.025); }
.step-block > label, .step-block > .grid-2, .step-block > .picker-row, .step-block > .choice-list, .step-block > .variable-cloud, .step-block > .switch-line { grid-column: 2; }
.step-index { width: 48px; height: 48px; border-radius: 18px; display: grid; place-items: center; color: #05231d; background: var(--accent); font: 900 1rem var(--font-mono); }
.step-block h2 { margin: 0 0 .2rem; }
.step-block p { margin: 0 0 .75rem; color: var(--muted); }
.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .75rem; }
.picker-row { display: grid; grid-template-columns: 1fr auto; gap: .55rem; }
.choice-list { display: grid; gap: .55rem; }
.choice-list.horizontal { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); }
.choice-card { border-radius: 18px; text-align: left; display: grid; gap: .22rem; align-content: start; }
.choice-card strong { color: var(--accent); }
.choice-card code, .choice-card span { overflow: hidden; text-overflow: ellipsis; }
.choice-card.selected { border-color: var(--accent); }
.variable-cloud { display: flex; flex-wrap: wrap; gap: .38rem; }
.variable-cloud button { padding: .38rem .55rem; font-family: var(--font-mono); font-size: .78rem; }
.switch-line { display: flex; grid-template-columns: auto 1fr; align-items: center; }
.switch-line input { width: auto; }
.studio-preview { position: sticky; top: 1rem; display: grid; gap: .85rem; }
.preview-output, .json-dump { min-height: 170px; border: 1px solid var(--line); border-radius: 20px; background: rgba(0,0,0,.24); padding: .9rem; color: #d7fff1; }
.save-button { width: 100%; border-radius: 20px; background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #061411; font-weight: 900; }

.empty-state { padding: 2rem; text-align: center; color: var(--muted); }
.empty-state h3 { color: var(--ink); }
.radar-dot { width: 58px; height: 58px; margin: 0 auto 1rem; border-radius: 50%; background: radial-gradient(circle, var(--accent) 0 10%, transparent 12% 100%); border: 1px solid var(--line); box-shadow: 0 0 40px rgba(52,245,197,.22); }
.launch-screen { min-height: 88vh; display: grid; place-content: center; text-align: center; gap: .8rem; }
.launch-screen h1 { font-size: clamp(2rem, 5vw, 4rem); margin: 0; }
.orb { width: 86px; height: 86px; margin: 0 auto; border-radius: 50%; background: radial-gradient(circle, #fff, var(--accent) 45%, transparent 68%); filter: drop-shadow(0 0 35px var(--accent)); animation: pulse 1.8s infinite ease-in-out; }
.error-banner { border: 1px solid rgba(255,107,107,.34); color: #ffd6d6; background: rgba(255,107,107,.08); border-radius: 18px; padding: .8rem; margin-bottom: .85rem; }
.kv { display: grid; grid-template-columns: 120px 1fr; gap: .65rem; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; word-break: break-all; }
.deploy-list { color: var(--muted); display: grid; gap: .6rem; }

@keyframes pulse { 0%, 100% { transform: scale(.96); opacity: .72; } 50% { transform: scale(1.08); opacity: 1; } }

@media (max-width: 900px) {
  .app-frame { grid-template-columns: 1fr; padding-bottom: 76px; }
  .side-rail { position: fixed; inset: auto 0 0 0; height: 70px; z-index: 10; padding: .45rem; border-right: 0; border-top: 1px solid var(--line); flex-direction: row; align-items: center; }
  .brand, .side-rail footer { display: none; }
  .side-rail nav { display: grid; grid-template-columns: repeat(5, 1fr); width: 100%; gap: .35rem; }
  .nav-item { justify-content: center; padding: .6rem .2rem; font-size: .78rem; border-radius: 16px; }
  .nav-item span { display: none; }
  .workspace { padding: 1rem; }
  .page-header { display: grid; }
  .signal-grid, .two-column, .studio-layout { grid-template-columns: 1fr; }
  .studio-preview { position: static; }
  .grid-2, .picker-row { grid-template-columns: 1fr; }
  .step-block { grid-template-columns: 1fr; }
  .step-block > label, .step-block > .grid-2, .step-block > .picker-row, .step-block > .choice-list, .step-block > .variable-cloud, .step-block > .switch-line { grid-column: 1; }
}