/* ============================================================
   B4LOUNGE — Brainground game shell (shared)
   Set --dc (domain colour) on .game-stage.
   ============================================================ */
.game-stage{--dc:var(--accent);max-width:840px;margin:0 auto;background:#fff;border:1px solid var(--line);border-radius:var(--r-area);box-shadow:var(--shadow-m);overflow:hidden;position:relative}
.g-top{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:18px 26px;border-bottom:1px solid var(--line);background:var(--surface)}
.g-top .gt-name{display:flex;align-items:center;gap:12px;font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;font-size:22px;font-weight:700;color:var(--ink)}
.g-top .gt-name .dd{width:12px;height:12px;border-radius:50%;background:var(--dc)}
.g-top .gt-meta{font-size:11px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3)}

.g-screen{display:none;padding:clamp(28px,4vw,48px)}
.g-screen.active{display:block}

/* intro */
.g-intro{text-align:center}
.g-intro .g-ico{width:74px;height:74px;border-radius:20px;margin:0 auto 22px;display:flex;align-items:center;justify-content:center;color:#fff;background:linear-gradient(150deg,var(--dc),color-mix(in srgb,var(--dc) 60%,#1a2744))}
.g-intro .g-ico svg{width:34px;height:34px}
.g-intro h2{font-size:clamp(26px,3.4vw,40px);margin-bottom:14px}
.g-intro p.lead{color:var(--ink-2);font-size:16.5px;max-width:520px;margin:0 auto 22px}
.g-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;max-width:600px;margin:0 auto 28px;text-align:left}
.g-steps .gs{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:16px 18px}
.g-steps .gs .n{width:26px;height:26px;border-radius:50%;background:color-mix(in srgb,var(--dc) 14%,#fff);color:var(--dc);display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;margin-bottom:10px}
.g-steps .gs b{font-size:13.5px;color:var(--ink);display:block;margin-bottom:3px}
.g-steps .gs span{font-size:12.5px;color:var(--ink-2);line-height:1.45}
.g-key{display:inline-flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-bottom:6px}
.kbd{display:inline-flex;align-items:center;gap:6px;font-size:11.5px;font-weight:600;color:var(--ink-2);background:var(--surface);border:1px solid var(--line-2);border-bottom-width:2px;border-radius:8px;padding:6px 11px}
@media(max-width:560px){.g-steps{grid-template-columns:1fr}}

/* HUD */
.g-hud{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:22px}
.hud-item{text-align:center;flex:1}
.hud-item .hv{font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;font-size:32px;font-weight:700;color:var(--ink);line-height:1}
.hud-item .hl{font-size:10px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3);margin-top:4px}
.g-timerbar{height:6px;background:var(--surface-2);border-radius:6px;overflow:hidden;margin-bottom:24px}
.g-timerbar .tf{height:100%;width:100%;background:var(--dc);border-radius:6px;transition:width .25s linear}

/* arena */
.g-arena{min-height:300px;display:flex;flex-direction:column;align-items:center;justify-content:center;border-radius:var(--r-card);background:var(--surface);border:1px solid var(--line);padding:30px;margin-bottom:24px;position:relative;user-select:none}
.g-stim{font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;font-weight:700;font-size:clamp(60px,12vw,120px);line-height:1;letter-spacing:1px}
.g-stim-sm{font-size:clamp(40px,8vw,72px)}
.g-hint{position:absolute;top:16px;left:0;right:0;text-align:center;font-size:12px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-3)}
.g-feedback{position:absolute;bottom:16px;left:0;right:0;text-align:center;font-size:13px;font-weight:700;letter-spacing:.06em;opacity:0;transition:opacity .15s}
.g-feedback.ok{color:var(--body);opacity:1}
.g-feedback.no{color:#b0475a;opacity:1}

/* big target (reaction) */
.g-target{width:100%;min-height:300px;border-radius:var(--r-card);display:flex;flex-direction:column;align-items:center;justify-content:center;cursor:pointer;color:#fff;text-align:center;transition:background .15s;font-weight:600}
.g-target .tt{font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;font-size:clamp(30px,5vw,52px);font-weight:700}
.g-target .ts{font-size:14px;opacity:.85;margin-top:8px;font-family:'Helvetica Neue',sans-serif}

/* controls */
.g-controls{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.g-btn{min-width:120px;padding:20px 28px;border-radius:14px;border:2px solid transparent;font-family:'Helvetica Neue',sans-serif;font-weight:700;font-size:15px;letter-spacing:.04em;cursor:pointer;transition:.15s var(--ease);color:#fff}
.g-btn:hover{transform:translateY(-2px);box-shadow:var(--shadow-m)}
.g-btn:active{transform:translateY(0)}
.g-btn.big{min-width:220px;font-size:17px;padding:24px 36px}
.g-btn.ghost{background:#fff;color:var(--ink);border-color:var(--line-2)}
.g-btn.ghost:hover{border-color:var(--ink)}

/* digit input */
.g-input{width:100%;max-width:340px;text-align:center;font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;font-size:44px;font-weight:700;letter-spacing:10px;padding:14px;border:2px solid var(--line-2);border-radius:14px;background:#fff;color:var(--ink)}
.g-input:focus{outline:none;border-color:var(--dc)}

/* result */
.g-result{text-align:center}
.g-result .score-dial{position:relative;width:200px;height:200px;margin:0 auto 6px}
.g-result .score-dial svg{transform:rotate(-90deg)}
.g-result .score-dial .c{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center}
.g-result .score-dial .pk{font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;font-size:60px;font-weight:700;color:var(--ink);line-height:.9}
.g-result .score-dial .pu{font-size:10px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3);margin-top:2px}
.g-result h2{font-size:clamp(26px,3.4vw,38px);margin:10px 0 6px}
.g-metrics{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;margin:22px 0}
.g-metrics .m{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:16px 22px;min-width:120px}
.g-metrics .m b{font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;font-size:30px;font-weight:700;color:var(--dc);display:block;line-height:1}
.g-metrics .m span{font-size:11px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3);margin-top:6px;display:block}
.g-result .r-lead{color:var(--ink-2);font-size:15px;max-width:480px;margin:4px auto 0}
.g-result .r-cta{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:30px}
.countdown{font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;font-size:clamp(80px,16vw,150px);font-weight:700;color:var(--dc)}