*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg: #0f1117;--surface: #1a1f2e;--surface2: #242938;--border: #2e3547;--primary: #4f9cf9;--primary-d: #2d7de0;--success: #22c55e;--danger: #ef4444;--warning: #f59e0b;--text: #e2e8f0;--muted: #64748b;--radius: 10px;--shadow: 0 4px 24px rgba(0,0,0,.45)}body{font-family:Inter,system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--text);min-height:100vh;line-height:1.5}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}.page{min-height:100vh;display:flex;flex-direction:column}.center{display:flex;justify-content:center;align-items:center}.col{display:flex;flex-direction:column}.row{display:flex;align-items:center}.gap-sm{gap:8px}.gap-md{gap:16px}.gap-lg{gap:24px}.w-full{width:100%}.mt-auto{margin-top:auto}.text-muted{color:var(--muted);font-size:.875rem}.text-center{text-align:center}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 20px;border:none;border-radius:var(--radius);font-size:.95rem;font-weight:600;cursor:pointer;transition:opacity .15s,transform .1s}.btn:active{transform:scale(.97)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover:not(:disabled){background:var(--primary-d)}.btn-danger{background:var(--danger);color:#fff}.btn-success{background:var(--success);color:#fff}.btn-ghost{background:transparent;color:var(--text);border:1px solid var(--border)}.btn-ghost:hover:not(:disabled){background:var(--surface2)}.btn-sm{padding:6px 14px;font-size:.85rem}.btn-lg{padding:14px 28px;font-size:1.05rem}.input{width:100%;padding:10px 14px;background:var(--surface2);border:1px solid var(--border);border-radius:var(--radius);color:var(--text);font-size:.95rem;outline:none;transition:border-color .15s}.input:focus{border-color:var(--primary)}.input::placeholder{color:var(--muted)}label{font-size:.875rem;color:var(--muted);margin-bottom:4px;display:block}.form-group{display:flex;flex-direction:column;gap:4px}.form-error{color:var(--danger);font-size:.8rem;margin-top:4px}.navbar{display:flex;align-items:center;justify-content:space-between;padding:10px 16px;background:var(--surface);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100;flex-wrap:wrap;gap:8px}.navbar-logo{font-size:1.1rem;font-weight:700;color:var(--primary);white-space:nowrap}.navbar-nav{display:flex;align-items:center;gap:8px;flex-wrap:wrap}@media (max-width: 480px){.navbar{padding:8px 12px}.navbar-nav .btn-sm{padding:6px 10px;font-size:.8rem}.navbar-nav .text-muted{display:none}}.auth-wrapper{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px}.auth-card{width:100%;max-width:420px}.auth-title{font-size:1.6rem;font-weight:700;margin-bottom:4px}.auth-subtitle{color:var(--muted);margin-bottom:28px}.dashboard{padding:24px 16px;max-width:1100px;margin:0 auto}.dashboard-greeting{margin-bottom:20px;font-size:1.4rem;font-weight:700}.section-title{font-size:.78rem;font-weight:700;margin-bottom:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.08em}.games-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:14px;margin-bottom:24px}.dashboard-cols{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-bottom:8px}@media (max-width: 640px){.dashboard-cols{grid-template-columns:1fr}}.task-row{display:flex;align-items:center;gap:10px;padding:10px 4px;cursor:pointer;border-bottom:1px solid var(--border)}.task-row:last-child{border-bottom:none}.task-row:hover{opacity:.8}.task-check{width:20px;height:20px;border-radius:50%;border:2px solid var(--border);flex-shrink:0;display:flex;align-items:center;justify-content:center;font-size:.7rem;color:var(--success)}.task-check--done{background:var(--success);border-color:var(--success);color:#fff}.task-icon{font-size:1.1rem;flex-shrink:0}.task-body{display:flex;flex-direction:column;gap:2px;min-width:0}.task-title{font-size:.88rem;font-weight:500}.task-title--done{text-decoration:line-through;color:var(--muted)}.task-due{font-size:.72rem;color:var(--muted)}.event-row{display:flex;align-items:center;gap:12px;padding:10px 4px;border-bottom:1px solid var(--border)}.event-row:last-child{border-bottom:none}.event-icon{font-size:1.3rem;flex-shrink:0}.rank-row{display:flex;align-items:center;gap:10px;padding:8px 4px;border-bottom:1px solid var(--border);border-radius:6px}.rank-row:last-child{border-bottom:none}.rank-row--me{background:#4f9cf914;border-radius:8px;padding:8px;margin:2px -4px;border-bottom:none}.rank-pos{width:28px;text-align:center;font-size:.85rem;font-weight:700;color:var(--muted);flex-shrink:0}.rank-avatar{font-size:1.2rem;flex-shrink:0}.rank-name{flex:1;font-size:.88rem;font-weight:500;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.rank-score{font-size:.85rem;font-weight:700;color:var(--primary);flex-shrink:0}.rank-streak{font-size:.75rem;color:var(--muted);flex-shrink:0;margin-left:4px}.game-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:28px 24px;cursor:pointer;transition:border-color .2s,transform .15s,box-shadow .2s;text-decoration:none;color:inherit;display:flex;flex-direction:column;gap:10px}.game-card:hover{border-color:var(--primary);transform:translateY(-2px);box-shadow:0 8px 32px #4f9cf926;text-decoration:none}.game-card-icon{font-size:2.4rem}.game-card-name{font-size:1.1rem;font-weight:700}.game-card-desc{font-size:.85rem;color:var(--muted)}.stats-bar{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:28px}.stat-chip{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:14px 20px;flex:1;min-width:120px}.stat-chip-value{font-size:1.5rem;font-weight:700;color:var(--primary)}.stat-chip-label{font-size:.78rem;color:var(--muted);margin-top:2px}.game-page{display:flex;flex-direction:column;height:100vh;overflow:hidden}.game-topbar{display:flex;align-items:center;justify-content:space-between;padding:10px 20px;background:var(--surface);border-bottom:1px solid var(--border);flex-shrink:0}.game-topbar-title{font-weight:700;font-size:1rem}.unity-canvas-wrap{flex:1;position:relative;background:#000;overflow:hidden}.unity-canvas-wrap canvas{display:block;width:100%!important;height:100%!important}.unity-loading-overlay{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;align-items:center;justify-content:center;background:#000;color:var(--muted);gap:12px;font-size:.9rem}.unity-progress{width:240px;height:4px;background:var(--surface2);border-radius:99px;overflow:hidden}.unity-progress-bar{height:100%;background:var(--primary);border-radius:99px;transition:width .3s}.detection-bar-wrap{display:flex;align-items:center;gap:12px}.detection-dot{width:10px;height:10px;border-radius:50%;background:var(--muted);transition:background .1s}.detection-dot.active{background:var(--success);box-shadow:0 0 8px var(--success)}.strength-bar{width:100px;height:6px;background:var(--surface2);border-radius:99px;overflow:hidden}.strength-bar-fill{height:100%;border-radius:99px;background:linear-gradient(90deg,var(--primary),var(--success));transition:width .08s}.debug-panel{position:fixed;bottom:16px;right:16px;background:#0f1117eb;border:1px solid var(--border);border-radius:var(--radius);padding:12px 16px;font-size:.75rem;font-family:monospace;min-width:200px;z-index:200;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.debug-panel-title{font-weight:700;margin-bottom:8px;color:var(--muted)}.debug-row{display:flex;justify-content:space-between;gap:16px;padding:2px 0}.gate-pass{color:var(--success)}.gate-fail{color:var(--danger)}.calibration-wrap{max-width:520px;margin:0 auto;padding:32px 24px}.calibration-phase{text-align:center;padding:32px}.calibration-icon{font-size:3rem;margin-bottom:12px}.calibration-timer{font-size:3rem;font-weight:700;color:var(--primary);font-variant-numeric:tabular-nums;margin:20px 0}.calibration-progress{width:100%;height:8px;background:var(--surface2);border-radius:99px;overflow:hidden;margin-bottom:16px}.calibration-progress-fill{height:100%;background:var(--primary);border-radius:99px;transition:width .1s}.rms-live{font-size:1.4rem;font-weight:700;color:var(--primary);font-variant-numeric:tabular-nums}.badge{display:inline-block;padding:2px 8px;border-radius:99px;font-size:.75rem;font-weight:600;background:var(--primary);color:#fff}.badge-success{background:var(--success)}.badge-danger{background:var(--danger)}.spinner{width:24px;height:24px;border:3px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.admin-table-wrap{overflow-x:auto}.admin-table{width:100%;border-collapse:collapse;font-size:.88rem}.admin-table th{padding:10px 16px;text-align:left;color:var(--muted);font-size:.75rem;text-transform:uppercase;letter-spacing:.05em;border-bottom:1px solid var(--border)}.admin-table td{padding:10px 16px;border-bottom:1px solid var(--border)}.admin-table tr:last-child td{border-bottom:none}.admin-row--me td{background:#4f9cf90d}.role-select{background:var(--surface2);border:1px solid var(--border);border-radius:6px;color:inherit;padding:4px 8px;font-size:.82rem;cursor:pointer}.badge{background:var(--primary);color:#fff;font-size:.65rem;padding:2px 6px;border-radius:99px;margin-left:6px;vertical-align:middle}.join-code{background:var(--surface2);border:1px solid var(--border);border-radius:6px;padding:3px 8px;font-family:monospace;font-size:.85rem;letter-spacing:.1em;color:var(--primary)}.join-code--lg{font-size:1.4rem;padding:6px 14px;letter-spacing:.15em}.prof-classroom-bar{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:20px}.prof-classroom-tabs{display:flex;gap:8px;flex-wrap:wrap;flex:1}.prof-new-class{display:flex;gap:8px;align-items:center}.prof-tabs{display:flex;gap:8px;margin-bottom:16px;flex-wrap:wrap}.tab-badge{background:var(--surface2);color:var(--muted);font-size:.7rem;padding:1px 6px;border-radius:99px;margin-left:4px}.prof-form-row{display:flex;gap:8px;flex-wrap:wrap;align-items:center}.prof-form-row .input{flex:1;min-width:120px}.lang-switcher{display:flex;gap:2px;background:var(--surface2);border-radius:8px;padding:2px}.lang-btn{background:none;border:none;cursor:pointer;font-size:1rem;padding:3px 5px;border-radius:6px;opacity:.5;transition:opacity .15s,background .15s}.lang-btn:hover{opacity:.8}.lang-btn--active{background:var(--border);opacity:1}