:root {
  color-scheme: dark;
  --bg: #070b12;
  --panel: #0d1420;
  --panel-2: #111b29;
  --line: #263244;
  --line-soft: #1a2635;
  --text: #f3f7fb;
  --muted: #96a5b6;
  --cyan: #29d3e2;
  --cyan-soft: rgba(41, 211, 226, .12);
  --coral: #ff5b63;
  --coral-soft: rgba(255, 91, 99, .13);
  --green: #4ee59b;
  --amber: #ffbf5c;
  --shadow: 0 18px 60px rgba(0,0,0,.28);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { background: var(--bg); }
body { margin: 0; min-width: 320px; background: radial-gradient(circle at 72% -10%, rgba(41,211,226,.09), transparent 28rem), var(--bg); color: var(--text); }
button, input, select { font: inherit; }
button { color: inherit; }
button:focus-visible, a:focus-visible, input:focus-visible, select:focus-visible { outline: 3px solid rgba(41,211,226,.75); outline-offset: 3px; }
.skip-link { position: fixed; left: 1rem; top: -5rem; z-index: 100; padding: .7rem 1rem; background: var(--text); color: #071018; border-radius: .6rem; }
.skip-link:focus-visible { top: 1rem; }
.prototype-banner { min-height: 34px; display: flex; align-items: center; justify-content: center; gap: .65rem; padding: .45rem 1rem; border-bottom: 1px solid rgba(255,191,92,.25); background: #18130d; color: #e9d4a8; font-size: .78rem; text-align: center; }
.prototype-banner span { padding: .15rem .5rem; border: 1px solid rgba(255,191,92,.45); border-radius: 999px; color: var(--amber); font-weight: 800; text-transform: uppercase; letter-spacing: .08em; }
.app-shell { display: grid; grid-template-columns: 248px minmax(0,1fr); min-height: calc(100vh - 34px); }
.sidebar { position: sticky; top: 0; height: calc(100vh - 34px); padding: 1.25rem 1rem; border-right: 1px solid var(--line-soft); background: rgba(7,11,18,.88); backdrop-filter: blur(16px); display: flex; flex-direction: column; z-index: 20; }
.brand { color: inherit; text-decoration: none; display: flex; align-items: center; gap: .75rem; padding: .35rem .55rem 1.7rem; }
.brand-mark { width: 38px; height: 38px; display: grid; place-items: center; border: 1px solid rgba(41,211,226,.6); border-radius: 12px; background: linear-gradient(145deg, rgba(41,211,226,.2), rgba(255,91,99,.15)); color: var(--cyan); font-weight: 900; }
.brand strong, .brand small, .profile-button strong, .profile-button small { display: block; }
.brand strong { font-size: 1.05rem; letter-spacing: .01em; }
.brand small, .profile-button small { color: var(--muted); margin-top: .15rem; font-size: .72rem; }
nav { display: grid; gap: .35rem; }
.nav-item, .profile-button { width: 100%; border: 0; background: transparent; cursor: pointer; text-align: left; }
.nav-item { padding: .78rem .85rem; border-radius: 10px; color: #b7c3d1; display: grid; grid-template-columns: 24px 1fr; align-items: center; gap: .45rem; }
.nav-item:hover { background: rgba(255,255,255,.04); color: var(--text); }
.nav-item.is-active { color: var(--cyan); background: var(--cyan-soft); box-shadow: inset 3px 0 0 var(--cyan); }
.nav-item span { text-align: center; font-size: 1.1rem; }
.side-footer { margin-top: auto; display: grid; gap: .85rem; }
.system-line { padding: .75rem; border-top: 1px solid var(--line-soft); color: var(--muted); font-size: .75rem; display: flex; align-items: center; gap: .45rem; }
.status-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 4px rgba(78,229,155,.09); flex: 0 0 auto; }
.status-dot--muted { background: var(--muted); box-shadow: none; }
.status-dot--warn { background: var(--amber); box-shadow: 0 0 0 4px rgba(255,191,92,.09); }
.status-dot--danger { background: var(--coral); box-shadow: 0 0 0 4px rgba(255,91,99,.1); }
.profile-button { padding: .65rem; display: grid; grid-template-columns: 36px 1fr auto; gap: .6rem; align-items: center; border-radius: 12px; }
.profile-button:hover { background: var(--panel); }
.avatar { width: 36px; height: 36px; display: grid; place-items: center; border-radius: 50%; background: var(--cyan-soft); border: 1px solid rgba(41,211,226,.35); color: var(--cyan); font-size: .75rem; font-weight: 800; }
.workspace { min-width: 0; }
.topbar { min-height: 88px; padding: 1rem clamp(1rem, 3vw, 2.25rem); display: flex; align-items: center; gap: 1rem; border-bottom: 1px solid var(--line-soft); background: rgba(7,11,18,.72); backdrop-filter: blur(14px); position: sticky; top: 0; z-index: 10; }
.topbar h1 { margin: .15rem 0 0; font-size: clamp(1.35rem,2.2vw,2rem); }
.eyebrow { margin: 0; color: var(--cyan); font-size: .67rem; letter-spacing: .14em; font-weight: 800; }
.top-actions { margin-left: auto; display: flex; align-items: center; gap: .65rem; }
.connection-chip { display: flex; gap: .55rem; align-items: center; padding: .55rem .8rem; border: 1px solid var(--line); border-radius: 999px; color: #bcc8d4; font-size: .78rem; background: rgba(13,20,32,.72); }
.icon-button, .menu-button { width: 40px; height: 40px; border: 1px solid var(--line); background: var(--panel); border-radius: 10px; cursor: pointer; }
.menu-button { display: none; }
main { padding: clamp(1rem, 3vw, 2.25rem); max-width: 1500px; margin: 0 auto; }
.stack { display: grid; gap: 1rem; }
.grid-2 { display: grid; grid-template-columns: minmax(0,1.3fr) minmax(280px,.7fr); gap: 1rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 1rem; }
.card { background: linear-gradient(145deg, rgba(17,27,41,.94), rgba(10,16,25,.94)); border: 1px solid var(--line); border-radius: 16px; box-shadow: var(--shadow); }
.card-body { padding: 1.15rem; }
.card h2, .card h3 { margin-top: 0; }
.card h2 { font-size: 1.1rem; }
.card h3 { font-size: .95rem; }
.muted { color: var(--muted); }
.small { font-size: .78rem; }
.hero { position: relative; overflow: hidden; min-height: 250px; padding: clamp(1.3rem,4vw,2.5rem); display: grid; align-content: center; }
.hero::after { content: ""; position: absolute; inset: -30% -10% -30% 48%; background: radial-gradient(circle, rgba(41,211,226,.24), transparent 55%), linear-gradient(135deg, transparent 30%, rgba(255,91,99,.14)); transform: rotate(-8deg); pointer-events: none; }
.hero > * { position: relative; z-index: 1; max-width: 620px; }
.hero h2 { font-size: clamp(1.65rem,4vw,3rem); margin-bottom: .6rem; }
.hero p { color: #bdc8d4; line-height: 1.6; }
.actions { display: flex; flex-wrap: wrap; align-items: center; gap: .65rem; margin-top: 1rem; }
.button { border: 1px solid var(--line); border-radius: 10px; padding: .72rem 1rem; background: var(--panel-2); cursor: pointer; font-weight: 750; }
.button:hover { border-color: #40516a; transform: translateY(-1px); }
.button--primary { color: #051116; border-color: transparent; background: linear-gradient(90deg, var(--cyan), #7ae7d8); }
.button--danger { border-color: rgba(255,91,99,.45); background: var(--coral-soft); color: #ff9aa0; }
.button--quiet { background: transparent; }
.button[disabled] { opacity: .42; cursor: not-allowed; transform: none; }
.progress-card { padding: 1rem; }
.stepper { display: grid; grid-template-columns: repeat(5,minmax(0,1fr)); gap: .5rem; }
.step { padding: .8rem; border: 1px solid var(--line); background: rgba(7,11,18,.35); border-radius: 12px; color: var(--muted); }
.step strong { display: block; color: #dce4ec; margin-bottom: .25rem; font-size: .82rem; }
.step.is-done { border-color: rgba(78,229,155,.4); background: rgba(78,229,155,.07); }
.step.is-current { border-color: rgba(41,211,226,.5); background: var(--cyan-soft); }
.metric { min-height: 120px; padding: 1rem; }
.metric .value { font-size: 1.7rem; margin: .8rem 0 .25rem; font-weight: 850; }
.checklist, .event-list, .help-list { list-style: none; padding: 0; margin: 0; display: grid; gap: .55rem; }
.checklist li, .event-list li, .help-list li { display: flex; gap: .7rem; align-items: center; padding: .75rem; border: 1px solid var(--line-soft); border-radius: 10px; background: rgba(7,11,18,.28); }
.check-icon { width: 24px; height: 24px; display: grid; place-items: center; border-radius: 50%; color: var(--muted); border: 1px solid var(--line); flex: 0 0 auto; }
.check-icon.is-done { color: var(--green); border-color: rgba(78,229,155,.45); background: rgba(78,229,155,.08); }
.experience-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 1rem; }
.experience-card { overflow: hidden; }
.experience-art { min-height: 150px; display: grid; place-items: center; position: relative; background: radial-gradient(circle at 35% 30%, rgba(41,211,226,.3), transparent 35%), radial-gradient(circle at 72% 65%, rgba(255,91,99,.28), transparent 35%), #0a1019; }
.experience-art--goal { background: radial-gradient(circle at 70% 30%, rgba(255,191,92,.25), transparent 35%), radial-gradient(circle at 30% 70%, rgba(41,211,226,.24), transparent 35%), #0a1019; }
.experience-art--boss { background: radial-gradient(circle at 50% 45%, rgba(255,91,99,.35), transparent 38%), radial-gradient(circle at 50% 80%, rgba(142,82,255,.24), transparent 34%), #0a1019; }
.art-symbol { font-size: 3.2rem; filter: drop-shadow(0 8px 18px rgba(0,0,0,.45)); }
.pill { display: inline-flex; align-items: center; gap: .35rem; padding: .25rem .5rem; border-radius: 999px; border: 1px solid var(--line); color: var(--muted); font-size: .7rem; }
.pill--official { color: var(--cyan); border-color: rgba(41,211,226,.4); background: var(--cyan-soft); }
.experience-card .card-body { display: grid; gap: .65rem; }
.experience-card h2 { margin: 0; }
.experience-card p { margin: 0; min-height: 3em; line-height: 1.5; }
.studio-layout { display: grid; grid-template-columns: minmax(320px,1.1fr) minmax(300px,.9fr); gap: 1rem; }
.preview { min-height: 360px; padding: 1.2rem; position: relative; overflow: hidden; display: grid; place-items: center; background: radial-gradient(circle at 28% 50%, rgba(41,211,226,.3), transparent 35%), radial-gradient(circle at 75% 50%, rgba(255,91,99,.3), transparent 35%), #07101b; }
.battle-scene { width: min(90%,720px); display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 1rem; text-align: center; }
.fighter { min-height: 170px; border: 1px solid var(--line); border-radius: 16px; display: grid; place-items: center; font-size: 3rem; background: rgba(7,11,18,.48); }
.versus { color: var(--amber); font-size: 1.6rem; font-weight: 900; }
.preview-label { position: absolute; top: 1rem; left: 1rem; }
.form-grid { display: grid; gap: .9rem; }
label { display: grid; gap: .4rem; color: #c5d0db; font-size: .8rem; font-weight: 700; }
select, input[type="text"] { width: 100%; padding: .72rem; border-radius: 10px; border: 1px solid var(--line); background: #0a111c; color: var(--text); }
.range-row { display: grid; grid-template-columns: 1fr auto; gap: .6rem; align-items: center; }
input[type="range"] { accent-color: var(--cyan); width: 100%; }
.runtime-status { display: flex; flex-wrap: wrap; gap: .65rem; align-items: center; justify-content: space-between; }
.live-badge { display: inline-flex; align-items: center; gap: .45rem; padding: .45rem .7rem; background: var(--coral-soft); border: 1px solid rgba(255,91,99,.4); border-radius: 999px; color: #ff9ba1; font-weight: 800; }
.empty { padding: 2rem; text-align: center; color: var(--muted); }
.empty-symbol { width: 58px; height: 58px; margin: 0 auto 1rem; display: grid; place-items: center; border: 1px solid var(--line); border-radius: 50%; color: var(--cyan); background: var(--cyan-soft); font-size: 1.4rem; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; min-width: 620px; }
th, td { padding: .85rem; text-align: left; border-bottom: 1px solid var(--line-soft); }
th { color: var(--muted); font-size: .72rem; text-transform: uppercase; letter-spacing: .06em; }
.toast-region { position: fixed; right: 1rem; bottom: 1rem; z-index: 50; display: grid; gap: .5rem; }
.toast { max-width: 360px; padding: .85rem 1rem; border: 1px solid rgba(41,211,226,.4); border-radius: 12px; background: #0e1b26; box-shadow: var(--shadow); }
.alert { padding: .85rem 1rem; border-radius: 12px; border: 1px solid rgba(255,191,92,.35); background: rgba(255,191,92,.08); color: #f0d5a5; }
.alert--danger { border-color: rgba(255,91,99,.4); background: var(--coral-soft); color: #ffafb4; }
.details-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: .7rem; }
.detail { padding: .75rem; border: 1px solid var(--line-soft); border-radius: 10px; }
.detail small, .detail strong { display: block; }
.detail small { color: var(--muted); margin-bottom: .25rem; }

@media (max-width: 1020px) {
  .grid-2, .studio-layout { grid-template-columns: 1fr; }
  .grid-3, .experience-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .stepper { grid-template-columns: repeat(3,minmax(0,1fr)); }
}

@media (max-width: 760px) {
  .prototype-banner { align-items: flex-start; }
  .app-shell { grid-template-columns: 1fr; }
  .sidebar { position: fixed; inset: 34px auto 0 0; width: min(86vw,280px); height: calc(100vh - 34px); transform: translateX(-105%); transition: transform .2s ease; box-shadow: 22px 0 60px rgba(0,0,0,.48); }
  .sidebar.is-open { transform: translateX(0); }
  .menu-button { display: inline-grid; place-items: center; flex: 0 0 auto; }
  .connection-chip { display: none; }
  .topbar { min-height: 76px; }
  main { padding: 1rem; }
  .grid-3, .experience-grid, .details-grid { grid-template-columns: 1fr; }
  .stepper { grid-template-columns: 1fr; }
  .hero { min-height: 290px; }
  .battle-scene { grid-template-columns: 1fr; }
  .fighter { min-height: 100px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; animation: none !important; }
}