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@media(min-width:1600px){.main-content{padding-top:54px}.page-header{margin-bottom:42px}.challenge-grid,.card-grid{gap:20px}.challenge-card{padding:28px}}
@media(max-width:1200px){:root{--sidebar-width:210px}.sidebar-brand-row{padding:27px 17px}.brand{font-size:15px;gap:7px}.main-content{padding-top:36px}.challenge-grid,.card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.split-layout{grid-template-columns:minmax(0,1fr) 255px;gap:22px}.stat{padding:0 16px}.stat-value,.stat>strong,.stat>h2{font-size:27px}.auth-story{padding-left:42px;padding-right:42px}}
@media(max-width:900px){.sidebar{width:245px;transform:translateX(-100%);transition:transform .22s var(--ease);z-index:60}.nav-open .sidebar{transform:translateX(0)}.nav-open{overflow:hidden}.nav-toggle,.nav-close{display:inline-flex}.nav-backdrop:not([hidden]){display:block;position:fixed;inset:0;background:rgba(24,38,29,.3);border:0;z-index:50;cursor:pointer}.app-main{margin-left:0}.topbar{min-height:64px;padding:0 24px}.topbar-label{font-size:10px}.main-content{padding:32px 24px 0}.sidebar-brand-row{padding:25px 17px;gap:5px}.page-header{margin-bottom:30px}.split-layout{grid-template-columns:minmax(0,1fr) 280px}.auth-layout{grid-template-columns:42% 58%}.auth-story{padding:35px 28px}.auth-story h1{font-size:43px}.auth-story-content>p:not(.eyebrow){font-size:11px}.auth-form-wrap{padding:44px 34px}.signal-art{gap:6px}.guest-main>.flash-stack{width:calc(58% - 60px)}}
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@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important}}

/* Player workspaces and management tools. */
.stats-strip:has(>.stat:nth-child(3):last-child){grid-template-columns:repeat(3,minmax(0,1fr))}.stat-note{display:block;font-size:10px;color:var(--muted);margin-top:7px}.dashboard-columns{display:grid;grid-template-columns:minmax(0,1fr) 270px;align-items:start;gap:28px;margin-top:34px}.dashboard-challenges{grid-template-columns:repeat(2,minmax(0,1fr))}.dashboard-main{min-width:0}.challenge-card[href]{color:var(--ink);text-decoration:none}.challenge-card[href]:hover h2,.challenge-card[href]:hover h3{color:var(--green)}.challenge-card[href] h2,.challenge-card[href] h3{transition:color .15s}.challenge-points small{font-size:9px;font-weight:500;color:var(--muted)}.card-arrow{font-size:17px;color:var(--green)}.solve-count{margin-left:auto;font-size:9px}.difficulty{display:inline-flex;align-items:center;gap:5px}.difficulty-dot{width:4px;height:4px;display:inline-block;border-radius:50%;background:currentColor}.progress-panel{padding:20px 24px}.progress-panel 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.search-field{flex:1}.toolbar .search-field input{width:100%;padding-left:34px}.search-icon{position:absolute;left:12px;top:5px;color:var(--muted);font-size:23px;line-height:30px}.toolbar .button{min-height:41px}.toolbar-select select{min-width:150px}.back-link{display:inline-flex;align-items:center;gap:7px;font-size:10px;font-weight:600;margin-bottom:24px;color:var(--muted)}.back-link:hover{color:var(--green)}.challenge-header .challenge-meta{justify-content:flex-start;gap:12px;margin-bottom:14px}.challenge-header .challenge-meta .badge{font-size:9px}.challenge-score{display:flex;flex-direction:column;align-items:flex-end;padding-bottom:7px}.challenge-score strong{font-size:39px;line-height:1;font-weight:550;color:var(--green);letter-spacing:-.055em;font-variant-numeric:tabular-nums}.challenge-score span{font-size:10px;color:var(--muted);margin-top:8px}.section-index{font-size:10px;font-weight:500;color:var(--faint);font-variant-numeric:tabular-nums}.challenge-brief{padding:29px}.challenge-brief .panel-heading{margin-bottom:26px}.challenge-brief .prose{font-size:12px;line-height:1.9}.challenge-brief .prose p:last-child{margin-bottom:0}.resource-block{display:flex;align-items:flex-start;flex-direction:column;gap:10px;margin-top:26px;padding-top:21px;border-top:1px solid var(--line)}.resource-block .help-text{margin:0}.hint-panel{border:1px solid var(--line);border-radius:var(--radius);background:var(--paper);margin-bottom:24px}.hint-panel summary{display:flex;align-items:center;justify-content:space-between;gap:15px;cursor:pointer;list-style:none;padding:18px 23px;font-size:11px;font-weight:650;transition:background .15s}.hint-panel summary::-webkit-details-marker{display:none}.hint-panel summary:hover{background:#eff3e7}.hint-panel summary .help-text{margin:0;font-size:9px;font-weight:450}.hint-symbol{font-size:17px;font-weight:450;margin-right:10px;display:inline-block;vertical-align:middle;line-height:1;transition:transform .15s var(--ease)}.hint-panel[open] .hint-symbol{transform:rotate(45deg)}.hint-content{padding:0 24px 23px;font-size:12px}.hint-content p:last-child{margin:0}.flag-panel .panel-heading{margin-bottom:25px}.full-width{width:100%}.flag-feedback:empty{display:none}.submission-note{font-size:9px;color:var(--muted);margin-top:20px;padding-top:17px;border-top:1px solid var(--line)}.solved-callout{display:flex;align-items:flex-start;gap:11px;padding:14px;background:var(--green-soft);border:1px solid #ccd8be;border-radius:5px;margin-bottom:18px;color:var(--green-dark)}.solved-callout strong{font-size:11px;font-weight:700}.solved-callout p{font-size:10px;line-height:1.7;color:var(--green);margin-top:3px}.solved-icon{flex:none;font-size:17px;line-height:1.3}.solver-list{display:grid;gap:18px}.solver-list li{display:flex;align-items:center;gap:10px}.solver-list li>div{flex:1;min-width:0}.solver-list strong{display:block;overflow-wrap:anywhere;font-size:10px;font-weight:650}.solver-list li>div>span{display:block;font-size:9px;color:var(--muted);margin-top:2px}.avatar-small{width:28px;height:28px;font-size:10px}.badge.admin{color:var(--green);background:var(--green-soft)}.rank-chip{display:flex;align-items:center;gap:12px;padding:11px 16px;background:var(--green-soft);border:1px solid #d0dbc3;border-radius:5px;font-size:10px;color:var(--green)}.rank-chip strong{font-size:22px;line-height:1;letter-spacing:-.025em;font-weight:550}.rank-chip>span:first-child{color:var(--muted)}.rank-chip>span:last-child{border-left:1px solid #c7d3bb;padding-left:12px}.leaderboard-panel .panel-heading>.help-text{font-size:9px;margin:0}.leaderboard-table th,.leaderboard-table 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a[aria-current="page"]::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--green)}.admin-form-panel{max-width:900px}.admin-overview-grid{grid-template-columns:minmax(0,1.4fr) minmax(250px,1fr)}.platform-status{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:18px 23px}.platform-status>div{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.platform-status>a{font-size:10px;font-weight:650;white-space:nowrap}.table-actions{display:flex;align-items:center;gap:12px}.table-actions a{font-size:10px;font-weight:650}.text-danger{color:var(--danger)}.field.field-checkbox{padding-top:7px}.checkbox-label{font-size:11px!important;line-height:1.6;margin-bottom:0!important}.required-indicator{color:var(--green);margin-left:3px}.field-invalid input,.field-invalid textarea,.field-invalid select{border-color:var(--danger)!important;background:#fffaf7!important}.admin-overview-grid .table-wrap{overflow-x:auto}.admin-overview-grid .empty-state{border:0;background:transparent;padding:30px 0 20px;margin:0}.admin-overview-grid .empty-state h3{font-size:16px}
@media(max-width:1200px){.dashboard-columns{grid-template-columns:minmax(0,1fr) 235px;gap:20px}.dashboard-challenges{grid-template-columns:1fr}.profile-layout{grid-template-columns:minmax(0,1fr) 270px}.admin-overview-grid{grid-template-columns:1fr}.admin-nav{gap:19px}}
@media(max-width:900px){.dashboard-columns{grid-template-columns:minmax(0,1fr) 250px}.dashboard-challenges{grid-template-columns:repeat(2,minmax(0,1fr))}.profile-layout{grid-template-columns:minmax(0,1fr) 280px}.toolbar-select select{min-width:130px}.toolbar input{min-width:160px}.toolbar{gap:9px}.admin-overview-grid{grid-template-columns:minmax(0,1.3fr) minmax(230px,1fr)}}
@media(max-width:760px){.dashboard-challenges{grid-template-columns:1fr}.admin-overview-grid{grid-template-columns:1fr}.toolbar{flex-wrap:wrap}.toolbar .search-field{flex-basis:100%}.toolbar-select{flex:1}.toolbar-select select{width:100%}}
@media(max-width:680px){.stats-strip:has(>.stat:nth-child(3):last-child){grid-template-columns:repeat(3,minmax(0,1fr));column-gap:10px;row-gap:0}.stats-strip:has(>.stat:nth-child(3):last-child) .stat{padding:0 10px;border-left:1px solid var(--line)}.stats-strip:has(>.stat:nth-child(3):last-child) .stat:first-child{padding-left:0;border-left:0}.stats-strip:has(>.stat:nth-child(3):last-child) .stat:last-child{padding-right:0}.stats-strip:has(>.stat:nth-child(3):last-child) .stat-label{font-size:8px;line-height:1.6}.stats-strip:has(>.stat:nth-child(3):last-child) .stat-note{font-size:8px;line-height:1.6}.stats-strip:has(>.stat:nth-child(3):last-child) .stat-value{font-size:26px}.dashboard-columns,.profile-layout{grid-template-columns:1fr;gap:4px}.dashboard-challenges{grid-template-columns:1fr}.progress-panel{padding:19px 20px}.progress-panel .progress-label{font-size:20px}.category-panel{margin-top:5px}.category-progress-list{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.category-progress-list li>a{font-size:10px}.category-count{font-size:8px}.challenge-header{flex-direction:row;align-items:flex-end;gap:15px}.challenge-header h1{font-size:33px}.challenge-score{padding-bottom:6px}.challenge-score strong{font-size:31px}.challenge-score span{font-size:9px;margin-top:5px}.challenge-brief{padding:23px 20px}.challenge-brief .panel-heading{margin-bottom:21px}.hint-panel summary{padding:17px 20px}.hint-panel summary .help-text{font-size:8px}.hint-content{padding:0 20px 20px}.back-link{margin-bottom:20px;font-size:9px}.rank-chip{gap:9px;padding:10px 13px;font-size:9px}.rank-chip strong{font-size:20px}.leaderboard-panel .panel-heading{gap:20px}.leaderboard-panel .panel-heading>.help-text{font-size:8px;line-height:1.6;max-width:125px;text-align:right}.leaderboard-table th,.leaderboard-table td{padding:14px 11px}.player-identity{gap:8px}.player-identity .avatar{width:23px;height:23px;font-size:9px}.leaderboard-table .rank-column{width:55px}.score-cell{font-size:11px}.rank-number{font-size:10px;width:23px;height:23px}.admin-nav{gap:21px;margin-top:-5px;margin-bottom:25px}.admin-nav a{font-size:10px;padding-bottom:12px}.platform-status{align-items:flex-start;padding:17px 20px;flex-direction:column;gap:12px}.admin-form-panel{padding:20px}.toolbar .search-field{flex-basis:100%;width:100%}.toolbar input{width:100%}.toolbar-select{flex:1;min-width:calc(50% - 5px)}.toolbar-select select{width:100%;min-width:0}.toolbar .button{min-height:38px}.table-actions{gap:10px}.table-actions a{font-size:9px}}

@media(max-width:680px){.admin-nav{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0 16px;overflow:visible}.admin-nav a{justify-content:center;padding:10px 0;font-size:10px}}

/* Leaderboard score history. */
.score-history-figure{margin:0;min-width:0}.score-history-panel{min-width:0}.score-history-panel .panel-heading{margin-bottom:16px}.score-history-panel .panel-heading p{font-size:10px}.score-history-scroll{overflow-x:auto;max-width:100%;padding:4px 0 8px;scrollbar-width:thin;scrollbar-color:#bdc6b5 transparent;border-radius:3px}.score-history-scroll:focus-visible{outline-offset:3px}.score-history-chart{display:block;width:100%;min-width:680px;height:auto;overflow:visible}.chart-grid line{stroke:var(--line);stroke-width:1;stroke-dasharray:3 5}.chart-grid text,.chart-axis text{fill:var(--muted);font-family:Manrope,"Helvetica Neue",sans-serif;font-size:17px;font-weight:450;font-variant-numeric:tabular-nums}.chart-axis line{stroke:#bac2b3;stroke-width:1}.chart-date-label{font-size:14px;fill:var(--faint)}.score-line{fill:none;stroke:var(--chart-color);stroke-width:2.5;stroke-linecap:round;stroke-linejoin:round;vector-effect:non-scaling-stroke}.score-endpoint{fill:var(--paper);stroke:var(--chart-color);stroke-width:2;vector-effect:non-scaling-stroke}.chart-series-0{--chart-color:#245443}.chart-series-1{--chart-color:#396885}.chart-series-1 .score-line{stroke-dasharray:8 4}.chart-series-2{--chart-color:#926b28}.chart-series-2 .score-line{stroke-dasharray:2 4}.chart-series-3{--chart-color:#755b7d}.chart-series-3 .score-line{stroke-dasharray:10 4 2 4}.chart-series-4{--chart-color:#a05d42}.chart-series-4 .score-line{stroke-dasharray:4 3}.chart-series-5{--chart-color:#3c7e75}.chart-series-5 .score-line{stroke-dasharray:12 3}.chart-series-6{--chart-color:#984854}.chart-series-6 .score-line{stroke-dasharray:8 3 2 3}.chart-series-7{--chart-color:#59658c}.chart-series-7 .score-line{stroke-dasharray:3 5}.chart-series-8{--chart-color:#75732c}.chart-series-8 .score-line{stroke-dasharray:12 3 3 3}.chart-series-9{--chart-color:#79584d}.chart-series-9 .score-line{stroke-dasharray:6 3}.score-history-legend{list-style:none;padding:20px 0 0;margin:10px 0 0;border-top:1px solid var(--line);display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:13px 24px}.score-history-legend li{display:flex;align-items:center;gap:9px;font-size:10px;min-width:0}.chart-legend-swatch{width:28px;height:12px;flex:none;overflow:visible}.chart-player-name{font-weight:650;overflow-wrap:anywhere;line-height:1.5;min-width:0}.chart-player-score{margin-left:auto;white-space:nowrap;font-weight:650;font-variant-numeric:tabular-nums}.chart-player-score>span{font-weight:450;color:var(--muted);font-size:9px}
@media(max-width:680px){.score-history-panel .panel-heading{margin-bottom:12px}.score-history-panel .panel-heading p{font-size:9px}.score-history-legend{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px 18px;padding-top:17px}.score-history-legend li{gap:6px;font-size:9px}.chart-legend-swatch{width:23px}.chart-player-score>span{font-size:8px}}

@media(max-width:680px){.auth-form .field input:not([type="checkbox"]):not([type="radio"]){font-size:16px;min-height:44px}}

/* Challenge chat and organizer preview. */
.challenge-content,.chat-panel,.chat-authoring-fields,.chat-authoring-preview{min-width:0}
.challenge-header>div:first-child{min-width:0}
.challenge-header h1,.challenge-card h2{overflow-wrap:anywhere}
.challenge-score{flex-shrink:0}
.challenge-header .challenge-meta{flex-wrap:wrap}
.challenge-header .challenge-meta .badge,.challenge-card-top .category{white-space:normal;overflow-wrap:anywhere}
.badge.chat-type{color:var(--green);background:var(--green-soft);font-size:9px}
.challenge-card h2 .chat-type{display:inline-flex;vertical-align:middle;margin-left:8px;letter-spacing:0;font-weight:650}
.chat-panel .panel-heading{align-items:flex-start;margin-bottom:18px}
.chat-panel .panel-heading p{font-size:11px;line-height:1.65}
.chat-history,.chat-preview-transcript{border:1px solid var(--line);border-radius:5px;background:var(--canvas);min-height:220px;max-height:480px;overflow-y:auto;overflow-x:hidden;padding:16px;scrollbar-width:thin;scrollbar-color:#bdc6b5 transparent;overscroll-behavior:contain}
.chat-messages{list-style:none;padding:0;margin:0;display:grid;gap:14px;min-width:0}
.chat-message{min-width:0;max-width:100%;padding:12px 14px;border-radius:5px;overflow-wrap:anywhere}
.chat-message-user{margin-left:28px;background:var(--green-soft);border:1px solid #d0dbc3}
.chat-message-assistant{margin-right:16px;background:var(--paper);border:1px solid var(--line)}
.chat-message-role{display:block;font-size:9px;font-weight:750;letter-spacing:.06em;color:var(--green);margin-bottom:6px}
.chat-message-content{white-space:pre-wrap;overflow-wrap:anywhere;font-size:12px;line-height:1.8;margin:0}
.chat-greeting{margin-bottom:14px}
.chat-empty{font-size:11px;line-height:1.8;color:var(--muted);padding:14px 2px}
.chat-composer{margin-top:20px}
.chat-composer .field{margin-bottom:14px}
.chat-composer .field textarea{min-height:100px}
.chat-composer .field textarea:disabled{background:var(--sidebar);color:var(--muted);cursor:not-allowed}
.chat-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.chat-actions .button{min-height:40px}
.chat-pending{display:inline-flex;align-items:center;gap:7px;font-size:10px;color:var(--muted)}
.chat-pending .status-dot{background:var(--green)}
.chat-status{margin-top:12px;font-size:11px;line-height:1.7;overflow-wrap:anywhere;color:var(--muted)}
.chat-status:empty{display:none}
.chat-status.is-error{color:var(--danger)}
.admin-form-panel:has(.chat-authoring-layout){max-width:1200px}
.chat-authoring-layout{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(280px,.85fr);gap:28px;align-items:start}
.chat-authoring-preview{position:sticky;top:24px}
.chat-editor-section{margin-top:24px;padding-top:22px;border-top:1px solid var(--line)}
.chat-editor-section>h2,.chat-editor-section>h3{margin-bottom:16px}
.chat-preview-transcript{min-height:190px;max-height:380px}
.chat-preview-transcript .chat-message+.chat-message{margin-top:12px}
.chat-settings-note{font-size:11px;line-height:1.8;color:var(--muted);margin:12px 0;overflow-wrap:anywhere}
.chat-preset-actions{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}
.chat-advanced{margin-top:20px;border-top:1px solid var(--line);padding-top:14px}
.chat-advanced>summary{cursor:pointer;font-size:11px;font-weight:700;line-height:1.7}
.chat-advanced[open]>summary{margin-bottom:16px}
@media(max-width:1050px){.chat-authoring-layout{grid-template-columns:1fr;gap:20px}.chat-authoring-preview{position:static}}
@media(max-width:680px){.chat-panel{padding:20px}.chat-panel .panel-heading p{font-size:10px}.chat-history,.chat-preview-transcript{padding:12px;min-height:190px;max-height:380px}.chat-message{padding:11px 12px}.chat-message-user{margin-left:16px}.chat-message-assistant{margin-right:8px}.chat-composer .field textarea{font-size:16px;min-height:105px}.chat-actions{gap:8px}.chat-actions .button{min-height:44px}.chat-actions .button.quiet{font-size:10px;padding:10px 8px}.chat-status{font-size:11px}.chat-authoring-layout{gap:18px}}

.admin-form:not(.has-chat) .chat-authoring-layout { grid-template-columns: 1fr; }

.chat-settings-note a, .help-text a { text-decoration: underline; text-underline-offset: 3px; }

.difficulty.beginner{color:var(--green)}.difficulty.god{color:#6c38a3;font-weight:750}

.classifier-record { white-space: pre-wrap; overflow-wrap: anywhere; padding: 1rem; background: var(--surface-soft, #f4f2ed); border-radius: 6px; }

/* Classifier decision workspace. */
.classifier-lab{padding:26px;min-width:0}.classifier-lab-header{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;margin-bottom:24px}.classifier-lab-header h2{font-size:20px;letter-spacing:-.025em}.classifier-eyebrow{font-size:9px;text-transform:uppercase;letter-spacing:.12em;color:var(--muted);font-weight:750;margin-bottom:8px}.classifier-model{font-size:9px;color:var(--muted);border:1px solid var(--line);padding:5px 8px;border-radius:4px;max-width:45%;text-align:right;line-height:1.5}.classifier-source{padding:16px 18px;background:var(--canvas);border:1px solid var(--line);border-radius:5px}.classifier-section-label{display:flex;justify-content:space-between;gap:12px;font-size:9px;color:var(--muted);margin-bottom:10px}.classifier-section-label span:first-child{font-weight:750;text-transform:uppercase;letter-spacing:.07em}.classifier-source pre{margin:0;white-space:pre-wrap;overflow-wrap:anywhere;font-family:inherit;font-size:12px;line-height:1.8;color:var(--ink)}.classifier-policy{border-bottom:1px solid var(--line);margin:5px 0 23px}.classifier-policy>summary{display:flex;justify-content:space-between;gap:12px;padding:15px 0;cursor:pointer;list-style:none;font-size:11px;font-weight:650;color:var(--green)}.classifier-policy>summary::-webkit-details-marker{display:none}.classifier-policy>summary span{font-size:16px;line-height:1;transition:transform .15s}.classifier-policy[open]>summary span{transform:rotate(45deg)}.classifier-policy-body{padding:0 0 20px;font-size:11px;line-height:1.85}.classifier-policy-body p+p{margin-top:10px}.classifier-goals{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin:18px 0}.classifier-goals span{display:block;font-size:9px;color:var(--muted);margin-bottom:4px}.classifier-goals strong{font-size:12px;font-weight:650}.classifier-options{list-style:none;padding:0;margin:0;display:grid;gap:8px}.classifier-options li{display:grid;grid-template-columns:minmax(85px,.3fr) 1fr;gap:15px}.classifier-options strong{font-size:10px;font-weight:650;overflow-wrap:anywhere}.classifier-options span{color:var(--muted)}.classifier-evidence{margin-top:18px;overflow:auto}.classifier-evidence h3{font-size:12px;margin-bottom:10px}.classifier-evidence table{border-collapse:collapse;width:100%;font-size:10px;text-align:left}.classifier-evidence th,.classifier-evidence td{padding:8px 10px;border-bottom:1px solid var(--line);vertical-align:top}.classifier-evidence th{color:var(--muted);font-weight:650}.classifier-input-label{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:9px}.classifier-input-label label{font-size:11px;font-weight:650}.classifier-input-label>span{font-size:9px;color:var(--muted);font-variant-numeric:tabular-nums;flex:none}.classifier-composer>textarea{display:block;width:100%;min-height:145px;resize:vertical;padding:14px 16px;border:1px solid #cbd1c3;border-radius:5px;background:var(--paper);color:var(--ink);font-size:12px;line-height:1.8;transition:border-color .15s,box-shadow .15s}.classifier-composer>textarea::placeholder{color:var(--faint)}.classifier-composer>textarea:focus{border-color:var(--green);box-shadow:0 0 0 2px var(--green-soft);outline:none}.classifier-action-row{display:flex;justify-content:space-between;align-items:center;gap:18px;margin-top:13px}.classifier-action-row>p{font-size:9px;line-height:1.7;color:var(--muted)}.classifier-action-row>p span{display:block;color:var(--faint)}.classifier-action-buttons{display:flex;gap:8px;align-items:center;justify-content:flex-end;flex-wrap:wrap}.classifier-action-buttons .button{min-height:38px;white-space:nowrap;font-size:10px;padding:9px 13px}.classifier-state{font-size:10px;color:var(--muted);padding-top:12px;overflow-wrap:anywhere}.classifier-result{margin-top:22px;padding:20px 0 0;border-top:1px solid var(--line);font-size:11px;line-height:1.7}.classifier-result-header{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:16px}.classifier-result-caption{display:block;font-size:9px;color:var(--muted);margin-bottom:4px}.classifier-decision{display:inline-flex;align-items:center;font-size:15px;font-weight:650;line-height:1.3;color:var(--ink)}.classifier-confidence{text-align:right;flex:none}.classifier-confidence span{display:block;font-size:9px;color:var(--muted)}.classifier-confidence strong{font-size:14px;font-weight:650;font-variant-numeric:tabular-nums}.classifier-distribution{display:grid;gap:9px;margin-bottom:16px}.classifier-probability{display:grid;grid-template-columns:minmax(80px,.3fr) 1fr 48px;align-items:center;gap:14px}.classifier-probability-label{font-size:10px;color:var(--muted);overflow-wrap:anywhere}.classifier-probability-value{font-size:10px;color:var(--muted);text-align:right;font-variant-numeric:tabular-nums}.classifier-probability.is-selected .classifier-probability-label,.classifier-probability.is-selected .classifier-probability-value{color:var(--green);font-weight:700}.classifier-probability meter{width:100%;height:6px;appearance:none;-webkit-appearance:none;background:var(--sidebar);border:0;border-radius:3px;overflow:hidden}.classifier-probability meter::-webkit-meter-bar{background:var(--sidebar);border:0;border-radius:3px}.classifier-probability meter::-webkit-meter-optimum-value{background:#8c9f88;border-radius:3px}.classifier-probability.is-selected meter::-webkit-meter-optimum-value{background:var(--green)}.classifier-probability meter::-moz-meter-bar{background:var(--green);border-radius:3px}.classifier-result-message{font-size:11px;color:var(--muted);margin-top:14px;line-height:1.75}.classifier-result.is-success .classifier-result-caption,.classifier-result.is-success .classifier-decision{color:var(--green)}.classifier-trace{list-style:none;margin:15px 0 0;padding:13px 0 0;border-top:1px solid var(--line);display:grid;gap:8px}.classifier-trace li{display:grid;grid-template-columns:14px minmax(80px,.4fr) 1fr;align-items:baseline;gap:8px;font-size:10px;line-height:1.7}.classifier-trace strong{font-weight:650}.classifier-trace li>span:last-child{color:var(--muted)}.classifier-trace-mark{color:var(--muted)}.classifier-trace .is-passed .classifier-trace-mark{color:var(--green)}.classifier-metrics{display:flex;gap:24px;margin:14px 0;flex-wrap:wrap}.classifier-metrics>div span{display:block;font-size:9px;color:var(--muted)}.classifier-metrics strong{font-size:12px;font-weight:650}.classifier-flag{display:flex;align-items:center;justify-content:space-between;gap:14px;border:1px solid #cbd8c3;background:var(--green-soft);padding:12px 14px;border-radius:5px;margin-top:14px}.classifier-flag code{font-size:11px;overflow-wrap:anywhere}.classifier-flag .button{font-size:10px;white-space:nowrap;flex:none}.classifier-pending{font-size:11px;color:var(--muted);display:flex;gap:10px;align-items:center;min-height:35px}.classifier-pending::before{content:"";width:12px;height:12px;border:2px solid var(--line);border-top-color:var(--green);border-radius:50%;animation:classifier-spin .8s linear infinite}.classifier-error{font-size:11px;line-height:1.7;color:var(--danger);background:var(--danger-soft);padding:12px 14px;border-radius:5px;margin-top:18px}.classifier-lab-footer{display:flex;gap:8px 16px;flex-wrap:wrap;font-size:8px;line-height:1.7;color:var(--faint);border-top:1px solid var(--line);padding-top:14px;margin-top:23px}.classifier-action-buttons .button:disabled{opacity:.55}@keyframes classifier-spin{to{transform:rotate(360deg)}}@media(prefers-reduced-motion:reduce){.classifier-pending::before{animation:none}}@media(max-width:680px){.classifier-lab{padding:21px 20px}.classifier-lab-header{gap:12px;margin-bottom:20px}.classifier-lab-header h2{font-size:19px}.classifier-model{font-size:8px;max-width:42%}.classifier-source{padding:14px}.classifier-source pre{font-size:12px}.classifier-composer>textarea{font-size:16px;min-height:150px}.classifier-action-row{align-items:stretch;flex-direction:column;gap:12px}.classifier-action-buttons{justify-content:flex-start}.classifier-action-buttons .button{min-height:44px;flex-grow:1}.classifier-probability{grid-template-columns:80px 1fr 45px;gap:10px}.classifier-trace li{grid-template-columns:12px 1fr}.classifier-trace li>span:last-child{grid-column:2}.classifier-flag{align-items:flex-start;flex-direction:column}.classifier-policy-body{font-size:12px}}

.classifier-input-example{margin:15px 0;font-size:10px}.classifier-input-example pre{white-space:pre-wrap;overflow-wrap:anywhere;max-width:100%;font-size:10px;padding:10px 12px;background:var(--canvas);border-radius:4px;line-height:1.8}

/* Player transcript: stable reading space, explicit navigation, and native scrolling. */
.chat-conversation-toolbar{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:10px}
.chat-conversation-label{display:flex;align-items:baseline;gap:10px;flex-wrap:wrap}
.chat-conversation-label h3{font-size:12px;letter-spacing:0;font-weight:650}
.chat-message-count{font-size:10px;color:var(--muted);font-variant-numeric:tabular-nums}
.chat-expand{font-size:10px;padding:6px 10px;min-height:32px}
.chat-viewport{position:relative;min-width:0}
.chat-panel .chat-history{height:clamp(22rem,55dvh,38rem);min-height:0;max-height:none;padding:18px;overflow-y:auto;scrollbar-width:auto;scrollbar-color:#8c9f88 var(--canvas);scrollbar-gutter:stable;overflow-anchor:none;touch-action:pan-y pinch-zoom}
.chat-panel.chat-expanded .chat-history{height:clamp(30rem,76dvh,64rem)}
.chat-panel .chat-history::-webkit-scrollbar{width:10px}
.chat-panel .chat-history::-webkit-scrollbar-track{background:var(--canvas)}
.chat-panel .chat-history::-webkit-scrollbar-thumb{background:#8c9f88;border:2px solid var(--canvas);border-radius:8px}
.chat-panel .chat-history:focus-visible{outline:2px solid var(--green);outline-offset:3px}
.chat-latest{position:absolute;bottom:12px;left:50%;transform:translateX(-50%);display:inline-flex;align-items:center;gap:7px;padding:8px 14px;min-height:36px;border:1px solid #a8b8a0;border-radius:18px;background:var(--paper);color:var(--green);font-size:11px;font-weight:650;white-space:nowrap;box-shadow:0 2px 8px rgb(36 84 67 / .10)}
.chat-message-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:8px}
.chat-message-heading .chat-message-role{margin:0}
.chat-copy{border:0;padding:4px 2px;background:transparent;color:var(--muted);font-size:10px;line-height:1.4;border-radius:2px}
.chat-copy:hover{color:var(--green);text-decoration:underline;text-underline-offset:3px}
.chat-panel .chat-message-content{font-size:13px;line-height:1.85}
.chat-panel .chat-composer{margin-top:16px}
@media(max-width:680px){.chat-panel .chat-history{height:clamp(20rem,52dvh,32rem);padding:12px}.chat-panel.chat-expanded .chat-history{height:clamp(28rem,76dvh,54rem)}.chat-panel .chat-message-content{font-size:14px;line-height:1.8}.chat-conversation-toolbar{gap:10px}.chat-expand{min-height:40px}.chat-copy{min-height:32px;padding:5px}.chat-latest{min-height:42px;font-size:12px;bottom:10px}}

/* Organizer controls stay separate from player navigation. */
.challenge-card-shell{display:flex;flex-direction:column;min-width:0}.challenge-card-shell>.challenge-card{flex:1}.challenge-card-admin{display:flex;justify-content:flex-end;padding:8px 2px 0}.admin-current-flag{padding:16px 0;margin:0 0 18px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.admin-flag-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}.admin-flag-heading h3{font-size:12px;font-weight:650;letter-spacing:0}.admin-current-flag .help-text{margin-top:8px}.admin-flag-value{display:block;margin-top:12px;padding:12px;background:var(--canvas);border:1px solid var(--line);border-radius:4px;font-size:12px;white-space:pre-wrap;overflow-wrap:anywhere;user-select:text}.admin-flag-status:empty{display:none}.admin-flag-status.is-error{color:var(--danger)}.organizer-controls>.help-text{margin-top:10px}.organizer-controls .admin-current-flag{border-top:0;padding-top:0}

#challenge-flag{scroll-margin-top:24px}.admin-flag-value{width:100%;min-width:0;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;color:var(--ink)}.admin-flag-value::placeholder{font-family:Manrope,"Helvetica Neue",sans-serif;color:var(--muted)}

/* Compact challenge catalogue with visible topic navigation. */
.challenge-browser-header{margin-bottom:28px}.challenge-browser-header .page-actions{flex-wrap:wrap}.challenge-topics{margin-bottom:25px}.challenge-topics>h2{font-size:12px;letter-spacing:0;margin-bottom:12px}.challenge-topic-nav{display:grid;grid-template-columns:repeat(auto-fit,minmax(155px,1fr));gap:8px}.challenge-topic{display:flex;flex-direction:column;justify-content:space-between;gap:6px;padding:11px 12px;min-width:0;border:1px solid var(--line);border-radius:5px;color:var(--ink);background:transparent;text-decoration:none!important;line-height:1.5}.challenge-topic>span{font-size:11px;font-weight:650;overflow-wrap:anywhere}.challenge-topic>small{font-size:9px;color:var(--muted);font-variant-numeric:tabular-nums}.challenge-topic:hover{background:var(--paper);border-color:#b9c8b0}.challenge-topic.is-active{background:var(--green-soft);border-color:var(--green);color:var(--green-dark)}.challenge-topic.is-active>small{color:var(--green)}.challenge-searchbar .search-field{flex:1}.challenge-searchbar .toolbar-select{flex:0 1 180px}.challenge-results-heading{display:flex;align-items:center;justify-content:space-between;gap:16px;margin:27px 0 17px}.challenge-results-heading h2{font-size:18px}.challenge-results-heading .help-text{margin-top:5px}.challenge-status-nav{display:flex;flex-wrap:wrap;gap:5px}.challenge-status-link{padding:7px 10px;border-radius:4px;border:1px solid transparent;color:var(--muted);font-size:10px;font-weight:650;text-decoration:none!important;white-space:nowrap}.challenge-status-link>span{margin-left:5px;font-variant-numeric:tabular-nums;font-weight:500}.challenge-status-link:hover{background:var(--paper);color:var(--ink)}.challenge-status-link.is-active{border-color:var(--line);background:var(--paper);color:var(--green)}.challenge-catalog{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}.challenge-column-head{display:grid;grid-template-columns:minmax(0,1fr) 120px 70px 100px;gap:18px;padding:0 18px 10px;font-size:9px;color:var(--muted)}.challenge-column-head.has-admin{grid-template-columns:minmax(0,1fr) 120px 70px 100px 48px}.challenge-list-item{display:flex;align-items:stretch;border-bottom:1px solid var(--line);scroll-margin-top:24px;outline:none}.challenge-row{display:grid;grid-template-columns:minmax(0,1fr) 120px 70px 100px;gap:18px;align-items:center;flex:1;min-width:0;padding:15px 18px;color:var(--ink);text-decoration:none!important}.challenge-row:hover{background:var(--paper)}.challenge-row-title{min-width:0}.challenge-row-title>strong{display:block;font-size:12px;font-weight:650;line-height:1.6;overflow-wrap:anywhere}.challenge-row-category{display:block;margin-top:3px;font-size:9px;color:var(--muted);line-height:1.5}.challenge-row-category:empty{display:none}.challenge-row>.difficulty{font-size:10px}.challenge-row-points{font-size:12px;font-weight:650;font-variant-numeric:tabular-nums;white-space:nowrap}.challenge-row-points>small{font-size:9px;font-weight:450;color:var(--muted)}.challenge-row-status{font-size:10px;color:var(--muted);white-space:nowrap}.challenge-row-status.is-solved{color:var(--green);font-weight:650}.challenge-row-edit{display:flex;align-items:center;justify-content:center;flex:none;width:66px;font-size:10px;text-decoration:none!important}.challenge-row-edit:hover{background:var(--green-soft)}.challenge-list-end{text-align:center;margin:22px 0 0;font-size:10px;color:var(--muted)}
@media(max-width:900px){.challenge-row,.challenge-column-head{grid-template-columns:minmax(0,1fr) 100px 60px 85px;gap:12px}.challenge-column-head.has-admin{grid-template-columns:minmax(0,1fr) 100px 60px 85px 48px}}
@media(max-width:680px){.challenge-topic-nav{grid-template-columns:repeat(2,minmax(0,1fr))}.challenge-topic{padding:10px}.challenge-searchbar .toolbar-select{flex:auto}.challenge-results-heading{align-items:flex-start;flex-direction:column;gap:12px}.challenge-column-head{display:none}.challenge-row{grid-template-columns:minmax(0,1fr) auto auto;gap:9px 14px;padding:14px 8px}.challenge-row-title{grid-column:1/-1}.challenge-row-title>strong{font-size:13px}.challenge-row-category{font-size:10px}.challenge-row-edit{width:43px}.challenge-row-status,.challenge-row>.difficulty{font-size:10px}.challenge-browser-header .page-actions{align-items:flex-start}}

.challenge-category-select{display:none}.challenge-row-title>strong{font-size:14px;line-height:1.5}.challenge-row-category{font-size:10px;overflow-wrap:anywhere}.challenge-topic>span{font-size:12px}.challenge-topic>small{font-size:10px}.challenge-status-link{font-size:11px}.challenge-row-status,.challenge-row>.difficulty{font-size:11px}.challenge-results-heading>div{min-width:0}.challenge-results-heading h2{overflow-wrap:anywhere}@media(max-width:680px){.challenge-topics{display:none}.challenge-category-select{display:block}.challenge-row-title>strong{font-size:14px}.challenge-row-category{font-size:11px}.challenge-row-status,.challenge-row>.difficulty{font-size:11px}}

/* Keep the flag allowance visible before the submission form. */
.flag-panel .submission-note{font-size:11px;margin:0 0 18px;padding:0;border:0}

/* Organizer catalogue: all matches, stable selection and compact bulk controls. */
.admin-challenge-collection{min-width:0;margin-bottom:26px}
.admin-collection-heading{margin:0 0 14px}
.admin-collection-heading h2{font-size:18px;letter-spacing:-.025em}
.admin-collection-heading .help-text{font-size:11px;margin-top:5px}
.admin-bulk-bar{position:sticky;top:12px;z-index:5;background:var(--paper);border:1px solid var(--line);border-radius:5px 5px 0 0;padding:14px 18px;margin:0}
.admin-bulk-selection{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:10px;min-height:31px}
.admin-bulk-selection>strong{font-size:12px;font-weight:650;font-variant-numeric:tabular-nums;margin-right:auto}
.admin-bulk-fields{display:grid;grid-template-columns:minmax(130px,1fr) minmax(160px,1.35fr) minmax(135px,1fr) auto;gap:12px;align-items:end}
.admin-bulk-fields>.field{margin:0}
.admin-bulk-fields>.field>label{font-size:10px;margin-bottom:5px}
.admin-bulk-fields .field select,.admin-bulk-fields .field input{min-height:39px;font-size:11px;padding:8px 10px}
.admin-bulk-help{margin:10px 0 0;font-size:10px;color:var(--muted);line-height:1.7}
.admin-challenge-collection>.admin-challenge-scroll{max-height:clamp(24rem,62dvh,52rem);overflow:auto;overscroll-behavior:contain;scrollbar-gutter:stable;scrollbar-color:#8c9f88 var(--canvas);border-top:0;border-radius:0 0 5px 5px;margin:0;touch-action:pan-x pan-y pinch-zoom}
.admin-challenge-scroll:focus-visible{outline-offset:3px}
.admin-challenge-table{min-width:1030px;border-collapse:separate;border-spacing:0}
.admin-challenge-table thead th{position:sticky;top:0;z-index:2;background:#f4f5ee}
.admin-challenge-table th,.admin-challenge-table td{padding-left:14px;padding-right:14px}
.admin-challenge-table .admin-select-cell{width:55px;padding:0 8px 0 12px}
.admin-challenge-table .admin-challenge-title{min-width:225px;max-width:330px;white-space:normal}
.admin-challenge-title strong{font-size:12px;line-height:1.6;overflow-wrap:anywhere}
.admin-challenge-title .help-text{margin-top:3px;font-size:10px}
.admin-row-selector{display:inline-flex;align-items:center;justify-content:center;width:36px;min-height:44px;cursor:pointer}
.admin-row-selector input{width:16px;height:16px;margin:0;accent-color:var(--green);cursor:pointer}
.admin-challenge-table tbody tr.is-selected,.admin-challenge-table tbody tr.is-selected:hover{background:var(--green-soft)}
.admin-collection-end{margin:10px 0 0;font-size:10px;color:var(--muted);text-align:right}
@media(max-width:900px){.admin-bulk-fields{grid-template-columns:repeat(3,minmax(0,1fr))}.admin-bulk-fields>[data-bulk-submit]{grid-column:1/-1;justify-self:end}.admin-bulk-bar{position:relative;top:auto}.admin-challenge-table{min-width:990px}}
@media(max-width:680px){.admin-bulk-bar{padding:12px}.admin-bulk-selection{gap:4px}.admin-bulk-selection>strong{width:100%;margin-bottom:4px}.admin-bulk-fields{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px 10px}.admin-bulk-fields .admin-bulk-tries{grid-column:1/2}.admin-bulk-fields>[data-bulk-submit]{grid-column:2/3;justify-self:stretch;min-height:44px}.admin-bulk-fields .field select,.admin-bulk-fields .field input{font-size:16px;min-height:44px}.admin-bulk-fields>.field>label{font-size:11px}.admin-bulk-help{font-size:11px}.admin-challenge-collection>.admin-challenge-scroll{max-height:60dvh}.admin-row-selector{width:40px}.admin-collection-end{font-size:11px;text-align:left}}

/* Cosmetic solve rewards keep the challenge controls unobstructed. */
.category-titles-summary{padding-bottom:20px;margin-bottom:22px;border-bottom:1px solid var(--line)}
.category-title-caption{font-size:10px;font-weight:650;color:var(--muted);margin-bottom:10px}
.category-title-help{font-size:11px;color:var(--muted);line-height:1.75}
.category-title-list{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:10px}
.category-title-chip{display:flex;align-items:center;gap:9px;max-width:100%;padding:9px 12px;background:var(--green-soft);border:1px solid #d0dbc3;border-radius:5px;overflow-wrap:anywhere}
.category-title-mark{font-size:16px;line-height:1;color:var(--green);flex:none}
.category-title-chip strong{display:block;font-size:11px;line-height:1.5;font-weight:700;color:var(--green-dark)}
.category-title-chip div>span{display:block;font-size:9px;line-height:1.5;color:var(--green)}
.category-panel .category-title-list{display:grid;gap:8px}
.category-panel .category-title-chip{padding:8px 10px}
.category-titles-panel .panel-heading{align-items:flex-start}
.category-titles-panel .panel-heading>span{flex:none}
.solve-celebration{display:flex;align-items:flex-start;gap:8px;margin:-3px 0 18px;color:var(--green-dark)}
.solve-celebration-mark{font-size:19px;line-height:1.4;flex:none;color:var(--green)}
.solve-celebration strong{font-size:12px;font-weight:750}
.solve-celebration p{font-size:10px;color:var(--green);margin-top:3px;overflow-wrap:anywhere}
.solve-confetti{position:fixed;inset:0;z-index:70;overflow:hidden;pointer-events:none;contain:strict}
.solve-confetti-piece{position:absolute;top:15%;left:50%;width:6px;height:11px;background:var(--green);border-radius:1px;opacity:0;animation:solve-confetti-fall 1.65s var(--ease) both;--confetti-x:25px;--confetti-y:42vh;--confetti-turn:240deg}
.solve-confetti-piece:nth-child(4n+1){background:#245443;--confetti-x:-32px;--confetti-turn:-220deg}
.solve-confetti-piece:nth-child(4n+2){background:#899b75;width:7px;height:7px;--confetti-x:23px;--confetti-y:35vh;--confetti-turn:180deg}
.solve-confetti-piece:nth-child(4n+3){background:#b99542;--confetti-x:-12px;--confetti-y:48vh;--confetti-turn:310deg}
.solve-confetti-piece:nth-child(4n){background:#b6c7a6;width:5px;height:9px;--confetti-x:34px;--confetti-y:40vh;--confetti-turn:-270deg}
.solve-confetti-piece:nth-child(10n+1){left:13%;animation-delay:.02s}
.solve-confetti-piece:nth-child(10n+2){left:21%;animation-delay:.12s}
.solve-confetti-piece:nth-child(10n+3){left:28%;animation-delay:.04s}
.solve-confetti-piece:nth-child(10n+4){left:35%;animation-delay:.14s}
.solve-confetti-piece:nth-child(10n+5){left:43%;animation-delay:.06s}
.solve-confetti-piece:nth-child(10n+6){left:51%;animation-delay:.16s}
.solve-confetti-piece:nth-child(10n+7){left:59%;animation-delay:.08s}
.solve-confetti-piece:nth-child(10n+8){left:66%;animation-delay:.18s}
.solve-confetti-piece:nth-child(10n+9){left:74%;animation-delay:.1s}
.solve-confetti-piece:nth-child(10n){left:82%;animation-delay:.2s}
.solve-confetti-piece:nth-child(n+11){top:12%;animation-delay:0s}
@keyframes solve-confetti-fall{0%{opacity:0;transform:translate3d(0,-18px,0) rotate(0deg)}12%{opacity:1}100%{opacity:0;transform:translate3d(var(--confetti-x),var(--confetti-y),0) rotate(var(--confetti-turn))}}
@media(prefers-reduced-motion:reduce){.solve-confetti{display:none}.solve-confetti-piece{animation:none}}
@media(max-width:680px){.category-titles-panel .panel-heading{flex-wrap:wrap}.category-title-chip{padding:9px 11px}.solve-confetti-piece{--confetti-y:34vh}}

/* Administration landing dashboard. */
.admin-overview-grid>.panel{min-width:0}
.admin-dashboard-stats .stat-label>a{color:var(--muted)}
.admin-dashboard-stats .stat-label>a:hover{color:var(--green)}
.admin-dashboard-participation .section-heading{margin-bottom:21px}
.admin-dashboard-metrics{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px 24px;margin:0}
.admin-dashboard-metrics>div{min-width:0}
.admin-dashboard-metrics dt{color:var(--muted);font-size:10px;line-height:1.6}
.admin-dashboard-metrics dd{margin:8px 0 0;font-size:24px;line-height:1.2;font-weight:550;letter-spacing:-.035em;font-variant-numeric:tabular-nums}
.admin-dashboard-metrics dd small{font-size:13px;font-weight:450;color:var(--muted);margin-left:2px}
.admin-dashboard-metric-note{display:block;color:var(--muted);font-size:10px;font-weight:450;letter-spacing:0;line-height:1.7;margin-top:6px}
.admin-dashboard-activity .data-table td:nth-child(2){white-space:normal;min-width:145px;max-width:250px;overflow-wrap:anywhere}
@media(max-width:680px){.admin-dashboard-metrics{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px 20px}.admin-dashboard-participation .section-heading{align-items:flex-start}.admin-dashboard-participation .section-heading p{max-width:190px}.admin-dashboard-stats .stat-note{font-size:11px}.admin-dashboard-metrics dt,.admin-dashboard-metric-note{font-size:11px}}