:root{--live-primary:#0f766e;--live-primary-hover:#115e59;--live-secondary:#0284c7;--live-accent:#f59e0b;--live-correct:#16a34a;--live-correct-bg:#dcfce7;--live-wrong:#dc2626;--live-wrong-bg:#fee2e2;--live-partial:#d97706;--live-partial-bg:#fef3c7;--live-card-bg:#fff;--live-border:#cbd5e1;--live-bg:#f8fafc;--live-text:#0f172a;--live-muted:#64748b}@media (prefers-color-scheme:dark){:root{--live-primary:#2dd4bf;--live-primary-hover:#14b8a6;--live-secondary:#38bdf8;--live-card-bg:#1e293b;--live-border:#334155;--live-bg:#0f172a;--live-text:#f8fafc;--live-muted:#94a3b8;--live-correct:#4ade80;--live-correct-bg:#064e3b;--live-wrong:#f87171;--live-wrong-bg:#7f1d1d;--live-partial:#fbbf24;--live-partial-bg:#78350f}}[data-theme=dark]{--live-primary:#2dd4bf;--live-primary-hover:#14b8a6;--live-secondary:#38bdf8;--live-card-bg:#1e293b;--live-border:#334155;--live-bg:#0f172a;--live-text:#f8fafc;--live-muted:#94a3b8;--live-correct:#4ade80;--live-correct-bg:#064e3b;--live-wrong:#f87171;--live-wrong-bg:#7f1d1d;--live-partial:#fbbf24;--live-partial-bg:#78350f}.live-page{max-width:1080px;color:var(--live-text);min-height:80vh;margin:0 auto;padding:16px}.live-page-title,.live-room-title{color:var(--live-primary);margin:0 0 16px;font-size:1.8rem;font-weight:800}.live-header-bar{align-items:center;gap:16px;margin-bottom:12px;display:flex}.back-link{color:var(--live-primary);font-size:.95rem;font-weight:600;text-decoration:none}.back-link:hover{text-decoration:underline}.live-panel{background:var(--live-card-bg);border:1px solid var(--live-border);border-radius:16px;margin-bottom:20px;padding:20px;box-shadow:0 2px 10px #0000000a}.live-field-label{flex-direction:column;gap:6px;margin-bottom:16px;font-weight:600;display:flex}.live-select,.live-text-input{width:100%;min-height:44px;color:inherit;background:var(--live-card-bg);border:1px solid var(--live-border);box-sizing:border-box;border-radius:8px;outline:none;padding:10px 14px;font-size:1rem}.live-select:focus,.live-text-input:focus{border-color:var(--live-primary);box-shadow:0 0 0 3px #0f766e33}.live-actions{flex-wrap:wrap;align-items:center;gap:12px;margin-top:16px;display:flex}.btn{cursor:pointer;border:none;border-radius:10px;justify-content:center;align-items:center;gap:8px;min-width:44px;min-height:44px;padding:10px 20px;font-size:1rem;font-weight:700;transition:all .15s;display:inline-flex}.btn-primary{background:var(--live-primary);color:#fff}.btn-primary:hover:not(:disabled){background:var(--live-primary-hover);transform:translateY(-1px)}.btn-secondary{color:var(--live-primary);border:1.5px solid var(--live-primary);background:0 0}.btn-secondary:hover:not(:disabled){background:#0f766e14}.btn-danger{color:#fff;background:#dc2626}.btn-danger:hover:not(:disabled){background:#b91c1c}.btn:disabled{opacity:.5;cursor:not-allowed}.live-status-bar{flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:16px;font-size:.9rem;display:flex}.status-pill{border-radius:20px;padding:4px 10px;font-weight:600}.status-pill.is-live{background:var(--live-correct-bg);color:var(--live-correct)}.status-pill.is-ended{background:var(--live-border);color:var(--live-muted)}.status-pill.is-reconnecting{background:var(--live-partial-bg);color:var(--live-partial)}.teacher-pill,.class-pill,.timer-pill{color:var(--live-primary);background:#0f766e1f;border:1px solid #0f766e40;border-radius:20px;padding:4px 12px;font-weight:600}@media (prefers-color-scheme:dark){.teacher-pill,.class-pill,.timer-pill{color:#2dd4bf;background:#2dd4bf26;border-color:#2dd4bf59}}[data-theme=dark] .teacher-pill,[data-theme=dark] .class-pill,[data-theme=dark] .timer-pill{color:#2dd4bf;background:#2dd4bf26;border-color:#2dd4bf59}.timer-pill.is-urgent{background:var(--live-wrong-bg);color:var(--live-wrong);font-weight:700;animation:1s infinite alternate pulse-urgent}@keyframes pulse-urgent{0%{transform:scale(1)}to{transform:scale(1.08)}}.live-rank-bar{color:#fff;background:linear-gradient(135deg,#0f766e,#0e7490);border-radius:12px;justify-content:space-between;align-items:center;margin-bottom:16px;padding:10px 16px;display:flex;box-shadow:0 4px 12px #0f766e40}.rank-info{cursor:pointer;align-items:center;gap:12px;font-weight:700;display:flex}.rank-badge{background:#fff3;border-radius:20px;padding:4px 10px;font-size:.95rem}.rank-score{font-size:1.15rem}.rank-streak{color:#fff;background:#ea580c;border-radius:12px;padding:2px 8px;font-size:.85rem}.rank-actions{gap:8px;display:flex}.rank-board-toggle-btn,.rank-mute-btn{color:#fff;cursor:pointer;background:#fff3;border:none;border-radius:8px;min-width:38px;min-height:38px;padding:6px 10px;font-weight:600}.rank-board-toggle-btn:hover,.rank-mute-btn:hover{background:#ffffff59}.live-board-modal{z-index:1000;background:#0009;justify-content:center;align-items:center;padding:16px;display:flex;position:fixed;inset:0}.live-board-modal-content{background:var(--live-card-bg);color:var(--live-text);border-radius:16px;width:100%;max-width:460px;padding:20px;box-shadow:0 10px 30px #0000004d}.modal-header{justify-content:space-between;align-items:center;margin-bottom:16px;display:flex}.modal-header h3{color:var(--live-primary);margin:0;font-size:1.3rem}.modal-close-btn{color:var(--live-muted);cursor:pointer;background:0 0;border:none;font-size:1.4rem}.top-list{flex-direction:column;gap:8px;margin-bottom:16px;display:flex}.top-row{background:var(--live-bg);border:1px solid var(--live-border);border-radius:10px;justify-content:space-between;align-items:center;padding:10px 14px;display:flex}.top-row.is-me{border-color:var(--live-primary);background:#0f766e1a;font-weight:700}.top-rank{min-width:40px;font-weight:800}.top-name{flex:1;padding:0 12px}.top-score{color:var(--live-primary);font-weight:700}.pinned-me-row{background:var(--live-primary);color:#fff;border-radius:10px;justify-content:space-between;align-items:center;margin-top:12px;padding:12px 14px;font-weight:700;display:flex}.pinned-me-row .top-score{color:#fff}.live-feedback-banner{border-radius:12px;margin-bottom:16px;padding:16px;animation:.25s ease-out slide-down;position:relative;overflow:hidden}@keyframes slide-down{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.live-feedback-banner.is-correct{background:var(--live-correct-bg);border:2px solid var(--live-correct);color:var(--live-correct)}.live-feedback-banner.is-partial{background:var(--live-partial-bg);border:2px solid var(--live-partial);color:var(--live-partial)}.live-feedback-banner.is-wrong{background:var(--live-wrong-bg);border:2px solid var(--live-wrong);color:var(--live-wrong);animation:.4s shake}@keyframes shake{0%,to{transform:translate(0)}25%{transform:translate(-6px)}75%{transform:translate(6px)}}.live-feedback-content{align-items:center;gap:16px;display:flex}.live-feedback-icon{font-size:2.2rem;font-weight:900}.live-feedback-title{margin:0 0 6px;font-size:1.25rem}.live-feedback-details{flex-wrap:wrap;gap:8px;display:flex}.live-points-pill,.live-streak-pill,.live-delta-pill{border-radius:12px;padding:3px 8px;font-size:.85rem;font-weight:700}.live-points-pill{background:#0000001a}.live-streak-pill{color:#fff;background:#ea580c}.live-delta-pill.is-up{color:#fff;background:#16a34a}.live-delta-pill.is-down{color:#fff;background:#dc2626}.live-confetti-canvas{pointer-events:none;z-index:9999;position:fixed;inset:0}.live-choice-grid{grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:12px;margin:16px 0;display:grid}.live-choice-btn{background:var(--live-card-bg);border:2px solid var(--live-border);min-height:56px;color:inherit;cursor:pointer;text-align:left;border-radius:12px;align-items:center;gap:12px;padding:12px 16px;font-size:1.05rem;transition:all .15s;display:flex}.live-choice-btn:hover:not(:disabled){border-color:var(--live-primary);background:#0f766e0d;transform:translateY(-2px)}.live-choice-btn.is-selected{border-color:var(--live-primary);background:#0f766e26;font-weight:700}.choice-letter{background:var(--live-primary);color:#fff;border-radius:8px;flex-shrink:0;justify-content:center;align-items:center;width:32px;height:32px;font-weight:700;display:flex}.live-tf-grid{grid-template-columns:1fr 1fr;gap:16px;margin:20px 0;display:grid}.live-tf-btn{cursor:pointer;border:3px solid #0000;border-radius:16px;flex-direction:column;justify-content:center;align-items:center;gap:8px;min-height:90px;font-size:1.25rem;font-weight:800;transition:all .2s;display:flex}.tf-true{background:var(--live-correct-bg);color:var(--live-correct);border-color:var(--live-correct)}.tf-false{background:var(--live-wrong-bg);color:var(--live-wrong);border-color:var(--live-wrong)}.live-tf-btn:hover:not(:disabled){transform:scale(1.03)}.live-tf-btn.is-selected{outline:4px solid var(--live-primary)}.live-order-list{flex-direction:column;gap:10px;margin:16px 0;display:flex}.live-order-item{border:2px solid var(--live-border);background:var(--live-card-bg);cursor:pointer;border-radius:12px;align-items:center;gap:12px;min-height:48px;padding:12px 16px;display:flex}.live-order-item.is-active-swap{border-color:var(--live-accent);background:#f59e0b26}.order-number{background:var(--live-primary);color:#fff;border-radius:50%;justify-content:center;align-items:center;width:28px;height:28px;font-weight:700;display:flex}.order-text{flex:1}.order-controls{gap:6px;display:flex}.order-btn{border:1px solid var(--live-border);background:var(--live-bg);cursor:pointer;border-radius:6px;width:36px;height:36px;font-weight:700}.live-match-columns{grid-template-columns:1fr 1fr;gap:16px;margin:16px 0;display:grid}@media (width<=600px){.live-match-columns{grid-template-columns:1fr}}.match-col{flex-direction:column;gap:8px;display:flex}.match-col h4{color:var(--live-muted);margin:0 0 6px;font-size:1rem}.match-item{border:2px solid var(--live-border);background:var(--live-card-bg);cursor:pointer;border-radius:10px;flex-direction:column;gap:4px;min-height:44px;padding:12px 14px;display:flex}.match-item.is-selected{border-color:var(--live-primary);background:#0f766e1a}.match-item.is-chosen{border-color:var(--live-accent);background:#f59e0b26}.matched-tag{color:var(--live-primary);font-size:.85rem;font-weight:700}.live-category-buckets{grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:12px;margin:16px 0;display:grid}.category-bucket{border:2px dashed var(--live-primary);cursor:pointer;background:#0f766e0d;border-radius:12px;min-height:100px;padding:14px}.bucket-header{color:var(--live-primary);justify-content:space-between;margin-bottom:8px;font-weight:700;display:flex}.bucket-items-preview{flex-wrap:wrap;gap:6px;display:flex}.bucket-tag{background:var(--live-primary);color:#fff;border-radius:12px;padding:2px 8px;font-size:.8rem}.items-chips-grid{flex-wrap:wrap;gap:8px;margin:10px 0;display:flex}.assignable-chip{border:1px solid var(--live-border);background:var(--live-card-bg);cursor:pointer;border-radius:20px;align-items:center;gap:6px;min-height:40px;padding:8px 14px;font-size:.95rem;display:inline-flex}.assignable-chip.is-selected{border-color:var(--live-accent);background:#f59e0b33;font-weight:700}.input-with-unit{align-items:center;gap:8px;display:flex}.number-unit{color:var(--live-primary);font-size:1.2rem;font-weight:700}.live-keypad-grid{grid-template-columns:repeat(3,1fr);gap:8px;max-width:280px;margin:16px 0;display:grid}.keypad-btn{border:1px solid var(--live-border);background:var(--live-card-bg);min-height:48px;color:inherit;cursor:pointer;border-radius:8px;font-size:1.25rem;font-weight:700}.keypad-btn:active{background:var(--live-border)}.live-podium-container{flex-direction:column;align-items:center;margin:24px 0;display:flex;position:relative}.live-podium-heading{color:var(--live-primary);margin-bottom:24px;font-size:2rem;font-weight:900}.live-podium-stage{justify-content:center;align-items:flex-end;gap:16px;width:100%;max-width:600px;display:flex}.podium-step{flex-direction:column;flex:1;align-items:center;display:flex}.podium-crown{margin-bottom:-10px;font-size:2.5rem;animation:1s infinite alternate bounce}@keyframes bounce{0%{transform:translateY(0)}to{transform:translateY(-8px)}}.podium-badge{font-size:1.5rem;font-weight:800}.podium-name{text-align:center;margin:4px 0;font-size:1.05rem;font-weight:700}.podium-score{color:var(--live-muted);margin-bottom:8px;font-size:.9rem}.podium-block{color:#fff;border-radius:12px 12px 0 0;justify-content:center;align-items:center;width:100%;font-size:2rem;font-weight:900;display:flex}.block-1{background:linear-gradient(#eab308,#ca8a04);height:180px}.block-2{background:linear-gradient(#94a3b8,#64748b);height:130px}.block-3{background:linear-gradient(#d97706,#b45309);height:90px}.host-board-modal{max-width:600px}.host-board-table-wrap{max-height:400px;overflow-y:auto}.host-board-table{border-collapse:collapse;width:100%}.host-board-table th,.host-board-table td{text-align:left;border-bottom:1px solid var(--live-border);padding:10px 12px}.delta-badge.is-up{color:#16a34a;font-weight:700}.delta-badge.is-down{color:#dc2626;font-weight:700}.live-award-panel{border:2px solid var(--live-primary);background:#0f766e14;border-radius:16px;margin:24px 0;padding:20px}.award-mode-selector{flex-direction:column;gap:10px;margin:16px 0;display:flex}.radio-label{cursor:pointer;align-items:center;gap:10px;font-weight:600;display:flex}.award-preview-chips{flex-wrap:wrap;gap:8px;margin:10px 0 16px;display:flex}.award-chip{background:var(--live-card-bg);border:1px solid var(--live-primary);border-radius:20px;padding:6px 12px;font-size:.9rem}.award-msg{color:var(--live-primary);margin-top:10px;font-weight:700}.live-award-done{background:var(--live-correct-bg);color:var(--live-correct);border-radius:12px;margin:16px 0;padding:12px 18px;font-weight:700}.live-award-banner{color:#854d0e;background:#fef08a;border:2px solid #eab308;border-radius:12px;margin-bottom:16px;padding:14px 18px;font-size:1.1rem;animation:1.5s infinite alternate pulse-urgent}.live-host-lobby-panel{background:var(--live-card-bg);border:1px solid var(--live-border);border-radius:16px;padding:32px;box-shadow:0 4px 20px #00000014}.lobby-header-hero{border-bottom:1px solid var(--live-border);flex-wrap:wrap;justify-content:space-around;align-items:center;gap:32px;margin-bottom:24px;padding-bottom:24px;display:flex}.lobby-code-box{text-align:center}.lobby-label{color:var(--live-muted);letter-spacing:.05em;font-size:1.1rem;font-weight:700}.lobby-huge-code{letter-spacing:.15em;color:var(--live-primary);margin:8px 0;font-family:monospace;font-size:clamp(3rem,6vw,4.5rem);font-weight:900}.lobby-url{color:var(--live-secondary);font-size:1.15rem;font-weight:600}.lobby-qr-box{text-align:center;flex-direction:column;align-items:center;gap:8px;display:flex}.lobby-qr-img{border-radius:12px;box-shadow:0 4px 12px #0000001a}.lobby-qr-hint{color:var(--live-muted);font-size:.95rem;font-weight:600}.lobby-participants-box h3{margin:0 0 16px;font-size:1.3rem}.lobby-names-grid{background:var(--live-bg);border-radius:12px;flex-wrap:wrap;gap:10px;min-height:80px;margin-bottom:24px;padding:16px;display:flex}.lobby-student-chip{background:var(--live-card-bg);border:1px solid var(--live-border);border-radius:20px;padding:8px 16px;font-size:1.05rem;font-weight:700;box-shadow:0 2px 6px #0000000d}.lobby-start-bar{flex-wrap:wrap;justify-content:center;gap:16px;margin-top:24px;display:flex}.btn-start-live{border-radius:12px;padding:14px 32px;font-size:1.3rem;font-weight:800}.live-host-presentation-container{flex-direction:column;gap:16px;width:100%;display:flex}.live-host-top-bar{background:var(--live-card-bg);border:1px solid var(--live-border);border-radius:12px;justify-content:space-between;align-items:center;padding:8px 18px;display:flex;box-shadow:0 2px 8px #0000000d}.host-top-left{align-items:center;gap:16px;display:flex}.host-code-chip-btn{background:var(--live-bg);border:1px solid var(--live-border);cursor:pointer;color:var(--live-text);border-radius:20px;padding:6px 14px;font-size:1rem;font-weight:600;transition:all .2s}.host-code-chip-btn:hover{background:var(--live-primary);color:#fff;border-color:var(--live-primary)}.host-code-chip-btn strong{color:var(--live-primary);letter-spacing:.08em;font-family:monospace}.host-code-chip-btn:hover strong{color:#fff}.host-step-indicator{color:var(--live-muted);font-size:1.05rem;font-weight:700}.host-top-right{align-items:center;gap:12px;display:flex}.host-answered-chip{color:var(--live-primary);background:#0f766e1f;border:1px solid #0f766e40;border-radius:20px;padding:6px 14px;font-size:1rem;font-weight:700}[data-theme=dark] .host-answered-chip{color:#2dd4bf;background:#2dd4bf26;border-color:#2dd4bf59}.btn-outline-note{border:1px solid var(--live-accent);color:var(--live-accent);cursor:pointer;background:0 0;border-radius:8px;padding:6px 12px;font-weight:700}.btn-outline-fs{border:1px solid var(--live-border);color:var(--live-text);cursor:pointer;background:0 0;border-radius:8px;padding:6px 12px;font-weight:600}.live-host-stage{width:100%}.host-slide-stage,.host-question-stage{flex-direction:column;justify-content:center;min-height:520px;margin-bottom:0;padding:24px 32px;display:flex}.live-host-bottom-bar{z-index:50;background:var(--live-card-bg);border:1px solid var(--live-border);border-radius:14px;justify-content:space-between;align-items:center;padding:12px 20px;display:flex;position:sticky;bottom:12px;box-shadow:0 4px 18px #0000001f}.bottom-bar-left,.bottom-bar-right{flex-wrap:wrap;align-items:center;gap:12px;display:flex}.btn-next-step{padding:10px 24px;font-size:1.15rem;font-weight:800}.live-host-question{flex-direction:column;gap:18px;width:100%;display:flex}.live-host-top-meta{justify-content:space-between;align-items:center;width:100%;display:flex}.host-countdown-circle{background:var(--live-card-bg);border:4px solid var(--live-primary);width:66px;height:66px;color:var(--live-primary);border-radius:50%;flex-direction:column;justify-content:center;align-items:center;font-weight:900;display:flex;box-shadow:0 4px 12px #0000001a}.host-countdown-circle.is-urgent{color:#ef4444;border-color:#ef4444;animation:.8s infinite alternate pulse-urgent}.countdown-number{font-size:1.6rem;line-height:1}.countdown-unit{text-transform:uppercase;opacity:.8;font-size:.65rem;font-weight:700}.response-counter-badge{color:var(--live-text);background:var(--live-bg);border:1px solid var(--live-border);border-radius:24px;padding:8px 20px;font-size:1.25rem;font-weight:700}.response-counter-badge strong{color:var(--live-primary);font-size:1.45rem}.live-host-prompt{text-align:center;color:var(--live-text);margin:6px 0 16px;font-size:clamp(1.8rem,2.5vw,2.4rem);font-weight:800;line-height:1.35}.live-host-options-grid{grid-template-columns:repeat(2,1fr);gap:20px;width:100%;display:grid}@media (width<=768px){.live-host-options-grid{grid-template-columns:1fr}}.host-option-card{color:#fff;border-radius:16px;flex-direction:column;justify-content:space-between;min-height:120px;padding:20px 24px;font-weight:700;transition:all .3s;display:flex;box-shadow:0 4px 14px #00000026}.option-card-0{background:#e21b3c}.option-card-1{background:#1368ce}.option-card-2{background:#d89e00}.option-card-3{background:#26890c}.option-card-4{background:#8b5cf6}.option-card-5{background:#ec4899}.host-option-header{justify-content:space-between;align-items:center;margin-bottom:6px;display:flex}.choice-shape-badge{background:#00000040;border-radius:8px;padding:4px 12px;font-size:1.3rem;font-weight:900}.host-correct-badge{color:#16a34a;background:#fff;border-radius:20px;padding:4px 12px;font-size:.95rem;font-weight:900;box-shadow:0 2px 8px #0003}.host-option-body{margin:6px 0 10px;font-size:clamp(1.35rem,1.8vw,1.7rem);line-height:1.35}.host-option-card.is-correct{outline-offset:-2px;z-index:5;outline:5px solid #fff;transform:scale(1.02);box-shadow:0 0 25px #22c55ee6}.host-option-card.is-dimmed{opacity:.45;filter:grayscale(35%)}.host-option-distribution{background:#0000004d;border-radius:10px;margin-top:8px;padding:8px 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svg{flex-shrink:0}.login-panel-google:hover{box-shadow:0 1px 4px color-mix(in srgb, var(--ink) 20%, transparent)}.page[data-appearance=dark] .login-panel-google{color:#e3e3e3;background:#131314;border-color:#8e918f}.login-panel-form{gap:var(--space-2);margin-top:var(--space-5);text-align:left;display:grid}.login-panel-form label{color:var(--ink-2);font-size:var(--font-small);font-weight:var(--font-weight-ui)}.login-panel-form label:not(:first-child){margin-top:var(--space-3)}.login-panel-form input{width:100%;min-width:0;min-height:48px;padding:var(--space-3);border:1px solid var(--line);border-radius:var(--radius-control);background:var(--paper);color:var(--ink);font-size:max(16px, var(--font-body))}.login-panel-password{position:relative}.login-panel-password input{padding-right:52px}.login-panel-reveal{border-radius:var(--radius-control);width:44px;min-height:44px;color:var(--ink-2);background:0 0;border:0;place-items:center;display:grid;position:absolute;top:2px;bottom:2px;right:2px}.login-panel .login-panel-submit{width:100%;min-height:48px;margin-top:var(--space-4);gap:var(--space-2)}.login-panel-submit:disabled{opacity:.7}.login-panel .login-panel-hint{margin:var(--space-4) 0 0;color:var(--ink-2);font-size:var(--font-caption);line-height:1.7}.login-panel .login-panel-error{margin:var(--space-3) 0 0;padding:var(--space-3);border:1px solid var(--danger);border-radius:var(--radius-control);color:var(--danger);font-size:var(--font-small);text-align:left}.login-panel :is(button,a,input):focus-visible{outline:var(--focus-width) solid var(--accent);outline-offset:var(--focus-offset)}.login-panel-spinner{border:2px solid;border-right-color:#0000;border-radius:50%;width:18px;height:18px;animation:.7s linear infinite login-panel-spin}@keyframes login-panel-spin{to{transform:rotate(360deg)}}@media (prefers-reduced-motion:reduce){.login-panel-tabs:before{transition:none}.login-panel-spinner{animation:none}}@media (prefers-color-scheme:dark){.page[data-appearance=system] .login-panel-google{color:#e3e3e3;background:#131314;border-color:#8e918f}}@media (width<=480px){.login-panel{padding:var(--space-4)}}