:root {
  color-scheme: dark;
  --bg: #0b100e;
  --panel: #121916;
  --panel-2: #17201c;
  --line: #2a3731;
  --muted: #91a097;
  --text: #eef5f0;
  --lime: #c8f36a;
  --green: #53d68a;
  --red: #ff746c;
  --amber: #f1bd5b;
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 15% -10%, rgba(109, 175, 87, .16), transparent 31rem),
    linear-gradient(180deg, #0d1411 0%, var(--bg) 45%);
  color: var(--text);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: .18;
  background-image: linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
  background-size: 32px 32px;
}

.shell { width: min(1420px, calc(100% - 48px)); margin: 0 auto; padding-bottom: 72px; }

.topbar {
  min-height: 150px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}

.eyebrow, small, .step { font-size: 11px; letter-spacing: .16em; color: var(--lime); font-weight: 700; }
h1 { margin: 8px 0 4px; font-size: clamp(34px, 5vw, 58px); letter-spacing: -.05em; line-height: .92; }
.topbar p, .intro p { color: var(--muted); margin: 8px 0 0; }
.topbar-actions { display: flex; align-items: center; gap: 10px; }
.game-entry-link { padding: 10px 14px; border-radius: 8px; background: var(--lime); color: #17200f; font-size: 13px; font-weight: 800; text-decoration: none; transition: .18s ease; }
.game-entry-link:hover { transform: translateY(-1px); box-shadow: 0 10px 24px rgba(200,243,106,.14); }
.game-entry-link:focus-visible { outline: 3px solid rgba(200,243,106,.28); outline-offset: 3px; }
.health { color: var(--muted); border: 1px solid var(--line); padding: 10px 14px; border-radius: 999px; font-size: 13px; }
.health span { display: inline-block; width: 8px; height: 8px; background: var(--amber); border-radius: 50%; margin-right: 8px; box-shadow: 0 0 15px currentColor; }
.health.up span { background: var(--green); }
.health.down span { background: var(--red); }

main { display: grid; gap: 20px; }
.intro { padding: 44px 0 28px; display: flex; align-items: end; justify-content: space-between; gap: 28px; }
.intro h2 { font-size: clamp(26px, 4vw, 42px); margin: 10px 0; max-width: 680px; letter-spacing: -.03em; }
.intro p { max-width: 720px; line-height: 1.7; }
.route { display: flex; align-items: center; gap: 10px; white-space: nowrap; color: var(--muted); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12px; }
.route span { border: 1px solid var(--line); background: rgba(19, 28, 24, .8); padding: 9px 11px; border-radius: 7px; }
.route i { color: var(--lime); font-style: normal; }

.workspace { display: grid; grid-template-columns: minmax(0, 1.18fr) minmax(360px, .82fr); gap: 20px; }
.panel { background: linear-gradient(145deg, rgba(23,32,28,.96), rgba(15,22,19,.98)); border: 1px solid var(--line); border-radius: 14px; box-shadow: 0 18px 54px rgba(0,0,0,.18); }
.composer, .response-panel, .trace-panel { padding: 24px; }
.panel-title { display: flex; justify-content: space-between; align-items: start; gap: 20px; margin-bottom: 22px; }
.panel-title h3 { margin: 6px 0 0; font-size: 20px; }

.fields { display: grid; gap: 14px; }
.fields.two { grid-template-columns: 1fr 1fr; }
.fields.three { grid-template-columns: 1fr 1fr 1fr; }
label { display: grid; gap: 8px; font-size: 12px; color: var(--muted); }
input, select, textarea { width: 100%; color: var(--text); background: #0d1411; border: 1px solid var(--line); border-radius: 8px; outline: none; }
input, select { padding: 12px; }
textarea { min-height: 280px; resize: vertical; padding: 16px; line-height: 1.65; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 13px; }
input:focus, select:focus, textarea:focus { border-color: #769b4c; box-shadow: 0 0 0 3px rgba(200,243,106,.08); }
.editor-label { margin-top: 16px; }

button { font: inherit; border-radius: 8px; cursor: pointer; border: 1px solid transparent; transition: .18s ease; }
button:disabled { opacity: .55; cursor: wait; }
.actions { display: flex; gap: 10px; margin-top: 16px; }
.primary { flex: 1; padding: 13px 16px; background: var(--lime); color: #17200f; font-weight: 800; }
.primary:hover { transform: translateY(-1px); box-shadow: 0 10px 24px rgba(200,243,106,.14); }
.primary span { float: right; opacity: .55; }
.secondary, .ghost { background: transparent; color: var(--text); border-color: var(--line); padding: 11px 14px; }
.secondary:hover, .ghost:hover { border-color: #65756c; background: rgba(255,255,255,.025); }

.response-panel { min-height: 430px; }
.badge { padding: 7px 10px; border-radius: 999px; font-size: 11px; font-weight: 800; }
.badge.idle { color: var(--muted); background: rgba(145,160,151,.1); }
.badge.success { color: var(--green); background: rgba(83,214,138,.1); }
.badge.error { color: var(--red); background: rgba(255,116,108,.1); }
.meta { color: var(--muted); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12px; padding-bottom: 16px; border-bottom: 1px solid var(--line); }
pre { margin: 18px 0 0; overflow: auto; white-space: pre-wrap; overflow-wrap: anywhere; color: #d9e9df; font: 12px/1.65 ui-monospace, SFMono-Regular, Menlo, monospace; }

.trace-panel { margin-top: 0; }
.legend { color: var(--muted); font-size: 12px; display: flex; align-items: center; gap: 7px; }
.ok-dot, .bad-dot { width: 7px; height: 7px; border-radius: 50%; display: inline-block; }
.ok-dot { background: var(--green); } .bad-dot { background: var(--red); margin-left: 8px; }
.empty { padding: 42px; text-align: center; border: 1px dashed var(--line); border-radius: 10px; color: var(--muted); }
.trace-list { display: grid; gap: 12px; }
.trace-card { border: 1px solid var(--line); border-radius: 10px; background: #0d1411; overflow: hidden; }
.trace-head { padding: 14px 16px; display: flex; justify-content: space-between; gap: 16px; border-bottom: 1px solid var(--line); }
.trace-path { font: 12px ui-monospace, SFMono-Regular, Menlo, monospace; }
.trace-ok { color: var(--green); } .trace-bad { color: var(--red); }
.trace-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; }
.trace-cell { min-width: 0; padding: 14px 16px; border-right: 1px solid var(--line); }
.trace-cell:last-child { border-right: 0; }
.trace-cell strong { display: block; margin-bottom: 9px; font-size: 11px; letter-spacing: .08em; color: var(--muted); }
.trace-cell pre { max-height: 190px; margin: 0; }

@media (max-width: 980px) {
  .shell { width: min(100% - 28px, 760px); }
  .topbar, .intro { align-items: flex-start; flex-direction: column; justify-content: center; }
  .topbar { padding: 28px 0; gap: 18px; }
  .topbar-actions { flex-wrap: wrap; }
  .route { flex-wrap: wrap; }
  .workspace { grid-template-columns: 1fr; }
  .fields.three { grid-template-columns: 1fr 1fr; }
  .trace-grid { grid-template-columns: 1fr; }
  .trace-cell { border-right: 0; border-bottom: 1px solid var(--line); }
}

@media (max-width: 560px) {
  .fields.two, .fields.three { grid-template-columns: 1fr; }
  .actions { flex-direction: column; }
  .panel-title { align-items: flex-start; flex-direction: column; }
  .legend { flex-wrap: wrap; }
}