:root{color-scheme:dark;--bg: #12161c;--panel: #1b222c;--line: #2c3644;--text: #e7edf5;--muted: #9aa8b8;--accent: #d4a24c;--danger: #d66;--ok: #6cba7a;font-family:Segoe UI,Candara,sans-serif}*{box-sizing:border-box}html,body,#app{margin:0;min-height:100%;background:radial-gradient(1200px 700px at 20% 0%,#1a2430 0%,var(--bg) 55%);color:var(--text)}body{min-height:100vh}.auth-shell,.game-shell{min-height:100vh;display:grid;place-items:center;padding:24px}.panel{width:min(420px,100%);background:color-mix(in srgb,var(--panel) 92%,transparent);border:1px solid var(--line);border-radius:14px;padding:24px;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.panel h1{margin:0 0 6px;font-size:1.8rem;letter-spacing:.04em}.panel .sub{margin:0 0 20px;color:var(--muted);font-size:.95rem}label{display:block;margin:0 0 6px;color:var(--muted);font-size:.85rem}input{width:100%;margin-bottom:12px;padding:10px 12px;border-radius:8px;border:1px solid var(--line);background:#0f1318;color:var(--text)}.row{display:flex;gap:8px;margin-top:8px}button{border:1px solid var(--line);background:#243041;color:var(--text);border-radius:8px;padding:10px 14px;cursor:pointer}button.primary{background:var(--accent);color:#1a1205;border-color:transparent;font-weight:600}button:disabled{opacity:.55;cursor:not-allowed}.error{color:var(--danger);min-height:1.2em;margin:8px 0 0;font-size:.9rem}.auth-actions{position:relative}.tip-wrap{position:relative;display:inline-flex}.tip-wrap[data-tip]:after{content:attr(data-tip);position:absolute;left:50%;bottom:calc(100% + 8px);transform:translate(-50%) translateY(4px);padding:6px 10px;border-radius:6px;background:#0f1318;border:1px solid var(--line);color:var(--text);font-size:.8rem;white-space:nowrap;opacity:0;pointer-events:none;transition:opacity .12s ease,transform .12s ease;z-index:2}.tip-wrap:hover:after,.tip-wrap:focus-within:after{opacity:1;transform:translate(-50%) translateY(0)}.toast{margin-top:14px;text-align:center;padding:10px 12px;border-radius:8px;border:1px solid var(--line);background:#243041;color:var(--accent);font-weight:600}.toast.show{animation:toast-pop .18s ease}@keyframes toast-pop{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}.game-shell{display:flex;flex-direction:column;align-items:stretch;gap:12px;max-width:1100px;margin:0 auto}.hud{display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;padding:12px 14px;border:1px solid var(--line);border-radius:12px;background:color-mix(in srgb,var(--panel) 88%,transparent)}.hud .meta{color:var(--muted);font-size:.9rem}.hud .meta strong{color:var(--text)}.stage{border:1px solid var(--line);border-radius:12px;overflow:hidden;background:#0b0e12}canvas{display:block;width:100%;height:min(70vh,720px);cursor:crosshair}.hint{color:var(--muted);font-size:.9rem}