@font-face{font-family:Goblino;font-style:normal;font-weight:400;font-display:swap;src:url(/fonts/goblino-medium.woff2) format("woff2")}@font-face{font-family:Goblino;font-style:normal;font-weight:700;font-display:swap;src:url(/fonts/goblino-bold.woff2) format("woff2")}:root,[data-theme=educator]{--primary: 112 177 69;--primary-dark: 90 142 55;--primary-disabled: 168 209 145;--bg: 247 248 246;--text: 33 33 33;--muted: 115 122 117;--secondary-light: 224 224 224;--success: 76 175 80;--warning: 255 152 0;--error: 239 83 80;--disabled: 189 189 189}[data-theme=student]{--primary: 81 150 255;--primary-dark: 41 122 244;--primary-disabled: 170 204 255;--bg: 245 245 245;--text: 57 60 65;--muted: 140 140 140;--secondary-light: 235 235 235;--success: 72 204 9;--warning: 245 183 23;--error: 242 107 107;--disabled: 217 217 217}:root{--font-medium: 400;--font-bold: 700;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1)}*{box-sizing:border-box}body{margin:0;font-family:Goblino,ui-sans-serif,system-ui,sans-serif;font-size:16px;font-weight:var(--font-medium);line-height:1.5;color:rgb(var(--text));background:rgb(var(--bg));-webkit-font-smoothing:antialiased}b,strong,th{font-weight:var(--font-bold)}h1{margin:0;font-size:24px;font-weight:var(--font-bold);line-height:1.1}h2{margin:0;font-size:18px;font-weight:var(--font-bold);line-height:1.25}h3{margin:0 0 8px;font-size:16px;font-weight:var(--font-bold)}[data-theme=student] h1{font-size:28px;line-height:1.25}[data-theme=student] h1,[data-theme=student] h2{color:#000}a{color:inherit;text-decoration:underline 2px rgb(var(--disabled));text-underline-offset:3px;transition:text-decoration-color .14s}a:hover{text-decoration-color:rgb(var(--text))}.muted{color:rgb(var(--muted))}.small{font-size:14px;line-height:20px}.error{color:rgb(var(--error))}.center{text-align:center}.btn,.btn-secondary,.btn-tool{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:0;font:inherit;cursor:pointer;text-decoration:none;white-space:nowrap}.btn,.btn-tool{border-radius:999px;transition:transform .1s ease-in-out}.btn{height:36px;padding:6px 14px;color:#fff;background:linear-gradient(rgb(var(--primary) / .9),rgb(var(--primary)));box-shadow:0 0 0 1px rgb(var(--primary) / .9),0 1px 2px rgb(var(--primary) / .4)}.btn:hover:not(:disabled),.btn-tool:hover:not(:disabled){transform:scale(1.015)}.btn:active:not(:disabled),.btn-tool:active:not(:disabled){transform:scale(.975)}.btn:active:not(:disabled){background:linear-gradient(rgb(var(--primary)),rgb(var(--primary-dark)))}.btn:disabled{cursor:not-allowed;background:linear-gradient(rgb(var(--primary-disabled) / .8),rgb(var(--primary-disabled)));box-shadow:0 0 0 1px rgb(var(--primary-disabled) / .5)}.btn-block{width:100%;height:auto;padding:10px 16px;border-radius:9px}.btn-secondary{min-height:32px;padding:2px 12px;font-size:14px;line-height:20px;color:rgb(var(--muted));border:1px solid rgb(255 255 255 / .8);border-radius:999px;background:linear-gradient(#ffffffe6,#fff);box-shadow:0 0 0 1px #0000000d,0 1px 3px #0000000d;transition:color .15s ease-in-out,box-shadow .15s ease-in-out,border-color .15s ease-in-out}.btn-secondary:hover:not(:disabled){border-color:#fff;box-shadow:0 0 0 1px #0000000f,0 1px 4px #0000000f}.btn-secondary:disabled{opacity:.5;cursor:not-allowed}.btn-tool{color:rgb(var(--muted));background:linear-gradient(rgb(var(--secondary-light) / .9),rgb(var(--secondary-light)));box-shadow:0 0 0 1px rgb(var(--muted) / .1),var(--shadow-sm)}.btn-round{width:54px;height:54px;padding:0;font-size:20px;border-radius:50%}.card{padding:20px;background:#fff;border-radius:6px;box-shadow:inset 0 0 0 1px rgb(var(--muted) / .1),var(--shadow-sm)}.panel{display:flex;flex-direction:column;gap:12px;padding:18px 16px 16px;border-radius:9px;text-align:center;background:linear-gradient(rgb(var(--primary) / .1),rgb(var(--primary) / .15));box-shadow:0 0 0 1px rgb(var(--primary) / .125),var(--shadow-md)}.stack{display:flex;flex-direction:column;gap:16px}.row{display:flex;align-items:center;gap:8px}.pill{display:inline-block;padding:1px 8px;border-radius:999px;font-size:12px;font-weight:var(--font-bold);letter-spacing:.08em;color:rgb(var(--primary));background:rgb(var(--primary) / .1);box-shadow:0 0 0 1px rgb(var(--primary) / .15)}.pill--muted{font-size:14px;font-weight:var(--font-medium);letter-spacing:normal;color:rgb(var(--muted));background:rgb(var(--muted) / .1);box-shadow:none}.field{display:flex;flex-direction:column;gap:6px;font-size:14px;color:rgb(var(--muted))}.input{width:100%;padding:10px 14px;border:1px solid rgb(var(--muted) / .2);border-radius:6px;font:inherit;font-size:18px;color:rgb(var(--text));background:#fff}.input::placeholder{color:rgb(var(--muted) / .6)}.input:focus{outline:none;border-color:rgb(var(--primary));box-shadow:0 0 0 3px rgb(var(--primary) / .2)}textarea.input{font-size:16px;resize:vertical}.input--big{padding:14px 16px;font-size:22px;text-align:center}.edu-shell{display:grid;grid-template-columns:256px 1fr;height:100vh;overflow:hidden}.sidebar{padding:20px 12px;background:#fff;border-right:1px solid rgb(var(--text) / .06);overflow-y:auto}.logo{display:inline-flex;align-items:center;gap:.3em;font-weight:var(--font-bold);line-height:1;color:rgb(var(--primary));text-decoration:none}[data-theme=student] .logo{color:rgb(var(--text))}.logo--md{font-size:22px}.logo--lg{font-size:36px}.logo--center{align-self:center}.logo-emoji{font-size:1.7em;line-height:1}.logo-word{display:flex;flex-direction:column;align-items:flex-start}.logo-mini{margin-top:.08em;padding:.18em .4em .12em;border-radius:.2em;font-size:.32em;line-height:1;letter-spacing:.1em;text-transform:uppercase;color:#fff;background:rgb(var(--primary))}.sidebar-logo{margin:0 12px 24px}.nav-link{display:flex;align-items:center;gap:12px;min-height:32px;padding:6px 12px;border-radius:8px;line-height:20px;color:rgb(var(--muted));text-decoration:none;transition:color .15s cubic-bezier(.4,0,.2,1),background-color .15s cubic-bezier(.4,0,.2,1)}.nav-link:hover{color:rgb(var(--text))}.nav-link.active{color:rgb(var(--text));background:#f4f4f5}.edu-main{min-width:0;padding:24px 26px 48px;background:linear-gradient(rgb(var(--primary) / .05),rgb(var(--bg)));overflow-y:auto}.breadcrumb{display:inline-block;margin-bottom:6px;color:rgb(var(--muted));text-decoration:underline}.page-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:24px}.list-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 12px;border-radius:8px;transition:background-color .15s}.list-row:hover{background:rgb(var(--primary) / .06)}.table-wrap{margin:0 -26px;background:#fff;overflow-x:auto}.table{width:100%;border-collapse:collapse}.table th{padding:8px 12px;font-size:13px;font-weight:var(--font-medium);line-height:20px;letter-spacing:.025em;text-align:left;text-transform:uppercase;white-space:nowrap;color:rgb(var(--text) / .5);border-bottom:1px solid rgb(var(--muted) / .1)}.table td{padding:13px 12px;vertical-align:middle;border-top:1px solid rgb(var(--muted) / .05)}.table th:first-child,.table td:first-child{width:40%;padding-left:34px}.table .num{text-align:right}.table tr.clickable{cursor:pointer}.table tbody tr:hover{background:rgb(var(--muted) / .05)}.cell-title{color:#000}.cell-sub{color:rgb(var(--muted) / .7)}.table td.small{color:#000}.check-dot{display:inline-flex;align-items:center;justify-content:center;width:14px;height:14px;border-radius:50%;font-size:9px;color:#fff;background:rgb(var(--muted))}.count-badge{display:inline-flex;align-items:center;justify-content:center;min-width:22px;height:22px;padding:0 6px;border-radius:4px;font-size:12px;font-weight:var(--font-bold);color:rgb(var(--primary));background:rgb(var(--primary) / .15);box-shadow:inset 0 0 0 1px rgb(var(--primary) / .2)}.join-info{margin:8px 0}.join-url{font-size:18px;font-weight:var(--font-bold)}.join-code{font-size:30px;font-weight:var(--font-bold);letter-spacing:.08em}.section-head{display:flex;align-items:baseline;gap:8px;margin:40px 0 16px}.section-head h2{font-size:20px;color:#000}.avatar{display:inline-flex;align-items:center;justify-content:center;flex-shrink:0;width:38px;height:38px;border-radius:50%;color:rgb(var(--muted));background:rgb(var(--muted) / .1)}.grid{border-collapse:separate;border-spacing:8px;margin:0 -8px}.grid th{font-size:13px;font-weight:var(--font-medium);vertical-align:bottom}.qhead{display:flex;flex-direction:column;justify-content:flex-start;width:160px;min-height:112px;padding:10px;text-align:left;font-size:13px;line-height:1.4;white-space:normal;overflow-wrap:anywhere;background:#fff;border-radius:6px;box-shadow:inset 0 0 0 1px rgb(var(--muted) / .1),var(--shadow-sm)}.student-cell{padding-right:8px;text-align:right;white-space:nowrap}.score{display:inline-flex;align-items:center;gap:6px;color:rgb(var(--muted))}.score .dot{width:12px;height:12px;margin:0}.cell{position:relative;width:132px;height:60px;border-radius:6px;text-align:center;font-weight:var(--font-bold);color:#fff;opacity:.8;cursor:pointer;transition:transform .15s ease-out,opacity .15s ease-out,box-shadow .15s ease-out}.cell:hover{z-index:25;opacity:1;transform:scale(1.06);box-shadow:var(--shadow-md)}.cell--good{background:rgb(var(--success) / .9)}.cell--medium{background:rgb(var(--warning) / .9)}.cell--bad{background:rgb(var(--error) / .9)}.cell--needs_review{background:rgb(var(--disabled))}.cell--empty{background:rgb(var(--disabled));opacity:.1;cursor:default}.cell--empty:hover{opacity:.1;transform:none;box-shadow:none}.cell-check{position:absolute;top:6px;right:6px;display:flex;align-items:center;justify-content:center;width:16px;height:16px;border-radius:50%;font-size:10px;line-height:1;background:#ffffffe6}.cell--good .cell-check{color:rgb(var(--success))}.cell--medium .cell-check{color:rgb(var(--warning))}.cell--bad .cell-check{color:rgb(var(--error))}.legend{display:flex;gap:16px;font-size:14px;color:rgb(var(--muted))}.dot{display:inline-block;flex-shrink:0;width:10px;height:10px;margin-right:6px;border-radius:50%;background:rgb(var(--disabled) / .5)}.dot--good{background:rgb(var(--success) / .9)}.dot--medium{background:rgb(var(--warning) / .9)}.dot--bad{background:rgb(var(--error) / .9)}.dot--needs_review{background:rgb(var(--disabled))}.student-shell{min-height:100vh;padding:32px 16px 48px;background:rgb(var(--bg))}.student-col{max-width:640px;margin:0 auto}.narrow{max-width:420px;margin:8vh auto 0}.join{display:flex;flex-direction:column;max-width:480px;min-height:calc(100vh - 80px);margin:0 auto}.join form{margin-top:auto}.progress-dots{display:flex;gap:8px}.progress-dots .dot{width:16px;height:16px;margin:0}.dot--current{background:rgb(var(--primary));box-shadow:0 0 12px 2px rgb(var(--primary) / .6),0 0 20px 4px rgb(var(--primary) / .3)}.dot--done{background:rgb(var(--primary) / .4)}.problem{position:relative;margin:28px 0 20px;padding:16px 12px;text-align:center;font-size:18px;color:rgb(var(--text))}.problem .pill{position:absolute;top:-8px;left:50%;transform:translate(-50%,-100%)}.board{display:block;margin:0 auto;background:#fff;border-radius:6px;box-shadow:inset 0 0 0 1px rgb(var(--muted) / .1),var(--shadow-sm);touch-action:none}.player{display:flex;flex-direction:column;min-height:calc(100vh - 80px)}.player-body{flex:1;display:flex;flex-direction:column;min-height:0}.player-actions{margin-top:16px}.board--fill{flex:1;width:100%;height:auto;min-height:0;margin:0}.toolbar{display:flex;align-items:center;justify-content:center;gap:12px}.banner{padding:16px 20px;border-radius:9px;font-size:18px;font-weight:var(--font-bold);background:rgb(var(--muted) / .1)}.banner--good{background:rgb(var(--success) / .15);color:rgb(var(--success))}.banner--medium{background:rgb(var(--warning) / .15);color:#c48c00}.banner--bad{background:rgb(var(--error) / .15);color:rgb(var(--error))}.spinner{width:28px;height:28px;margin:0 auto 12px;border:3px solid rgb(var(--primary) / .2);border-top-color:rgb(var(--primary));border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}