.training-hub-workspace{max-width:1240px;margin:0 auto;padding:42px 24px 80px}.training-hub-loading{min-height:420px;display:grid;place-content:center;text-align:center;gap:14px}.training-hub-hero{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:26px}.training-hub-hero h1{font-size:clamp(2rem,4vw,4rem);line-height:1.02;margin:.35rem 0 .8rem;max-width:760px}.training-hub-hero p{max-width:720px;color:var(--muted,#667085);font-size:1.05rem}.training-duration{display:flex;gap:7px;padding:6px;border:1px solid var(--line,#dbe2ec);border-radius:14px;background:var(--panel,#fff)}.training-duration button{border:0;background:transparent;border-radius:9px;padding:10px 13px;font-weight:800;cursor:pointer;color:inherit}.training-duration button.is-active{background:#dfb64a;color:#1c1a13}.training-summary-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-bottom:18px}.training-summary-grid article{display:flex;gap:14px;align-items:center;padding:19px;border:1px solid var(--line,#dbe2ec);border-radius:16px;background:var(--panel,#fff);min-width:0}.training-summary-grid article>span{display:grid;place-items:center;width:42px;height:42px;border-radius:12px;background:rgba(214,169,56,.14);font-size:1.25rem;flex:0 0 auto}.training-summary-grid div{display:grid;min-width:0}.training-summary-grid b{font-size:1.25rem}.training-summary-grid strong,.training-summary-grid small{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.training-summary-grid small{color:var(--muted,#667085);margin-top:3px}.training-plan-card{border:1px solid var(--line,#dbe2ec);border-radius:20px;background:var(--panel,#fff);padding:22px;margin-bottom:18px}.training-plan-card>header{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:18px}.training-plan-card h2{margin:.25rem 0 0}.training-start,.training-challenges button{border:0;border-radius:11px;background:#dfb64a;color:#1c1a13;font-weight:850;padding:12px 18px;cursor:pointer}.training-plan-list{display:grid;gap:9px}.training-plan-list>button{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:14px;width:100%;text-align:left;padding:14px;border:1px solid var(--line,#dbe2ec);background:transparent;color:inherit;border-radius:13px;cursor:pointer}.training-plan-list>button:hover{border-color:#d3a52f;background:rgba(214,169,56,.07)}.training-plan-list i{display:grid;place-items:center;width:32px;height:32px;border-radius:50%;background:rgba(214,169,56,.15);font-style:normal;font-weight:900}.training-plan-list span{display:grid}.training-plan-list small{color:var(--muted,#667085);margin-top:3px}.training-plan-list b{font-size:.9rem}.training-challenges{display:grid;grid-template-columns:1fr 1fr;gap:18px}.training-challenges article{display:flex;align-items:center;justify-content:space-between;gap:22px;padding:24px;border-radius:18px;border:1px solid var(--line,#dbe2ec);background:var(--panel,#fff)}.training-challenges h2{margin:.3rem 0 .45rem}.training-challenges p{margin:0;color:var(--muted,#667085)}.weekly-study-card{background:linear-gradient(135deg,rgba(38,52,88,.06),rgba(214,169,56,.08))!important}@media(max-width:980px){.training-summary-grid{grid-template-columns:1fr 1fr}.training-hub-hero{align-items:flex-start;flex-direction:column}.training-challenges{grid-template-columns:1fr}}@media(max-width:620px){.training-hub-workspace{padding:24px 12px 60px}.training-summary-grid{grid-template-columns:1fr}.training-duration{width:100%;overflow:auto}.training-duration button{flex:1}.training-plan-card>header,.training-challenges article{align-items:stretch;flex-direction:column}.training-plan-list>button{grid-template-columns:auto 1fr}.training-plan-list>button>b{grid-column:2}.training-start{width:100%}}

.training-challenge-actions{display:flex;gap:8px;flex-wrap:wrap}.training-challenges button.secondary{background:transparent;color:inherit;border:1px solid var(--line,#dbe2ec)}

/* TJK-Chess 15.0 connected training system */
.training-system-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:20px}.training-system-head h1{font-size:clamp(2rem,4.4vw,4.2rem);line-height:1;margin:.35rem 0 .7rem;max-width:850px}.training-system-head p{max-width:760px;color:var(--muted,#667085);font-size:1.05rem}.training-system-tabs{display:flex;gap:7px;overflow:auto;padding:6px;margin-bottom:18px;border:1px solid var(--line,#dbe2ec);border-radius:15px;background:var(--panel,#fff);scrollbar-width:thin}.training-system-tabs button{display:flex;align-items:center;gap:7px;white-space:nowrap;border:0;border-radius:10px;background:transparent;color:inherit;padding:11px 15px;font-weight:800;cursor:pointer}.training-system-tabs button.is-active{background:#dfb64a;color:#1c1a13}.training-system-tabs i{display:grid;place-items:center;min-width:20px;height:20px;padding:0 5px;border-radius:999px;background:rgba(0,0,0,.15);font-style:normal;font-size:.75rem}.training-system-content{min-height:420px}.training-summary-grid-v2{grid-template-columns:repeat(4,minmax(0,1fr))}.training-plan-v2 header p{margin:.35rem 0 0;color:var(--muted,#667085);max-width:720px}.training-challenges-v2{margin-bottom:18px}.training-brand-card{display:grid;grid-template-columns:1.4fr 1fr;gap:24px;padding:26px;border-radius:20px;border:1px solid var(--line,#dbe2ec);background:linear-gradient(135deg,rgba(214,169,56,.08),rgba(38,52,88,.04))}.training-brand-card h2{font-size:1.65rem;margin:.3rem 0 .6rem}.training-brand-card p{margin:0;color:var(--muted,#667085)}.training-brand-meta{display:grid;gap:10px}.training-brand-meta span{display:grid;padding:10px 12px;border-radius:11px;background:rgba(255,255,255,.5)}.training-brand-meta span b{font-size:.76rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted,#667085)}.training-brand-meta a{font-weight:850;color:inherit}.training-section-card{border:1px solid var(--line,#dbe2ec);border-radius:20px;background:var(--panel,#fff);padding:24px}.training-section-header{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;margin-bottom:20px}.training-section-header h2{font-size:clamp(1.5rem,3vw,2.5rem);margin:.25rem 0 .45rem}.training-section-header p{margin:0;color:var(--muted,#667085);max-width:760px}.training-header-actions,.training-filter-row,.training-review-actions,.training-board-actions{display:flex;gap:8px;flex-wrap:wrap}.training-section-card button,.training-modal button,.coach-panel button,.plan-task-grid button,.endgame-lesson-grid button{border:0;border-radius:10px;background:#dfb64a;color:#1c1a13;font-weight:850;padding:10px 14px;cursor:pointer}.training-section-card button.secondary,.training-modal button.secondary,.endgame-lesson-grid button.secondary{background:transparent;color:inherit;border:1px solid var(--line,#dbe2ec)}.training-filter-row{margin-bottom:16px}.training-filter-row button{background:transparent;color:inherit;border:1px solid var(--line,#dbe2ec)}.training-filter-row button.is-active{background:rgba(214,169,56,.16);border-color:#d2a32f}.training-review-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.training-review-card{display:flex;flex-direction:column;gap:10px;padding:18px;border:1px solid var(--line,#dbe2ec);border-radius:15px;min-width:0}.training-review-card h3{margin:0}.training-review-card p{margin:0;color:var(--muted,#667085);flex:1}.training-review-card-head,.training-review-meta{display:flex;align-items:center;justify-content:space-between;gap:8px}.training-review-meta{justify-content:flex-start;flex-wrap:wrap}.training-review-meta span{padding:5px 8px;border-radius:999px;background:rgba(103,115,135,.09);font-size:.75rem}.training-status{display:inline-flex;width:max-content;padding:5px 9px;border-radius:999px;font-size:.73rem;text-transform:uppercase;letter-spacing:.06em;font-weight:900;background:rgba(103,115,135,.12)}.training-status.unsure,.training-status.overdue{background:rgba(206,61,61,.15)}.training-status.with_hint{background:rgba(224,154,37,.16)}.training-status.correct,.training-status.secure,.training-status.mastered{background:rgba(46,148,91,.15)}.training-empty{display:grid;place-items:center;text-align:center;gap:9px;padding:52px 20px;border:1px dashed var(--line,#dbe2ec);border-radius:15px}.training-empty>span{font-size:2.5rem}.training-empty h3,.training-empty p{margin:0}.training-empty p{color:var(--muted,#667085);max-width:580px}.training-empty>div{display:flex;gap:8px}.plan-task-grid,.endgame-lesson-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.plan-task-grid article,.endgame-lesson-grid article{display:flex;flex-direction:column;align-items:flex-start;gap:10px;padding:20px;border:1px solid var(--line,#dbe2ec);border-radius:15px}.plan-task-grid article>span,.endgame-lesson-grid article>span{font-size:.72rem;text-transform:uppercase;letter-spacing:.08em;font-weight:850;color:var(--muted,#667085)}.plan-task-grid h3,.endgame-lesson-grid h3{margin:0}.plan-task-grid p,.endgame-lesson-grid p{margin:0;color:var(--muted,#667085);flex:1}.endgame-lesson-grid article>div{display:flex;gap:8px;flex-wrap:wrap}.training-mode-select{display:grid;gap:5px;font-weight:800}.training-mode-select select{border:1px solid var(--line,#dbe2ec);border-radius:10px;padding:10px;background:var(--panel,#fff);color:inherit}.progress-status-grid{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:10px;margin-bottom:18px}.progress-status-grid article{display:flex;gap:10px;align-items:center;padding:13px;border:1px solid var(--line,#dbe2ec);border-radius:13px;min-width:0}.progress-status-grid article>span{font-size:1.25rem}.progress-status-grid article div{display:grid;min-width:0}.progress-status-grid article small{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--muted,#667085)}.progress-layout,.coach-layout{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:14px}.progress-panel,.coach-panel{padding:20px;border:1px solid var(--line,#dbe2ec);border-radius:15px}.progress-panel h3,.coach-panel h3{margin-top:0}.progress-panel ol{padding-left:20px}.progress-panel li+li{margin-top:9px}.progress-day-list{display:grid;gap:8px}.progress-day-list>div{display:grid;grid-template-columns:92px 1fr 44px 72px;align-items:center;gap:8px;font-size:.82rem}.progress-day-list i{display:block;height:8px;border-radius:999px;background:linear-gradient(90deg,#dfb64a var(--accuracy),rgba(103,115,135,.16) var(--accuracy));}.progress-total{color:var(--muted,#667085)}.coach-panel form{display:grid;gap:10px}.coach-panel label,.coach-assignment-form label,.training-position-layout aside label{display:grid;gap:6px;font-weight:750}.coach-panel input,.coach-assignment-form input,.coach-assignment-form textarea{width:100%;box-sizing:border-box;border:1px solid var(--line,#dbe2ec);border-radius:10px;padding:10px;background:var(--panel,#fff);color:inherit}.coach-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:11px 0;border-bottom:1px solid var(--line,#dbe2ec)}.coach-row:last-child{border:0}.coach-row span{display:grid}.coach-row small{color:var(--muted,#667085)}.training-session-progress{height:9px;border-radius:999px;background:rgba(103,115,135,.12);overflow:hidden;margin-bottom:16px}.training-session-progress i{display:block;height:100%;background:#dfb64a}.training-plan-list>button.is-done{opacity:.66}.training-link-button{margin-top:12px;background:transparent!important;color:inherit!important;text-decoration:underline}.training-modal{position:fixed;z-index:10000;inset:0;display:grid;place-items:center;padding:18px;background:rgba(8,12,20,.72);backdrop-filter:blur(6px)}.training-modal-dialog{width:min(900px,96vw);max-height:94vh;overflow:auto;border-radius:20px;background:var(--panel,#fff);color:inherit;box-shadow:0 30px 90px rgba(0,0,0,.35);padding:22px}.training-modal-dialog>header{display:flex;align-items:flex-start;justify-content:space-between;gap:18px;margin-bottom:18px}.training-modal-dialog>header h2{margin:.25rem 0 0}.training-modal-dialog>header>button{background:transparent;color:inherit;border:1px solid var(--line,#dbe2ec);font-size:1.2rem}.training-position-dialog{width:min(1120px,97vw)}.training-position-layout{display:grid;grid-template-columns:minmax(360px,580px) 1fr;gap:24px}.training-position-board,.plan-position-preview{display:grid;grid-template-columns:repeat(8,1fr);aspect-ratio:1;overflow:hidden;border-radius:8px;box-shadow:0 12px 30px rgba(0,0,0,.18)}.training-board-square{position:relative;display:grid;place-items:center;padding:0;border:0!important;border-radius:0!important;background:none;font-size:clamp(1.5rem,6vw,4.2rem);aspect-ratio:1;cursor:pointer}.training-board-square.light{background:#e6d3ad!important}.training-board-square.dark{background:#8e6847!important}.training-board-square span,.training-board-square i{display:grid;place-items:center;width:84%;height:84%;font-style:normal}.training-board-square img,.training-board-square svg{width:100%;height:100%;object-fit:contain}.training-board-square.is-last{box-shadow:inset 0 0 0 5px rgba(238,202,42,.78)}.training-board-square.is-selected{box-shadow:inset 0 0 0 5px rgba(52,121,219,.85)}.training-board-square.is-legal::after{content:'';width:22%;height:22%;border-radius:50%;background:rgba(35,70,52,.45)}.training-board-square.is-capture::after{content:'';position:absolute;inset:7%;border:5px solid rgba(35,70,52,.45);border-radius:50%}.training-board-square.is-hint{animation:tjkHintPulse .65s ease-in-out 2}.training-board-actions{margin-top:10px}.training-position-layout aside{display:flex;flex-direction:column;align-items:flex-start;gap:12px}.training-position-layout aside h3{font-size:1.45rem;margin:0}.training-position-layout aside p{margin:0;color:var(--muted,#667085)}.training-explanation{width:100%;box-sizing:border-box;padding:14px;border-radius:12px;background:rgba(214,169,56,.09)}.training-explanation p{margin:.3rem 0 .8rem!important}.plan-solver{display:grid;grid-template-columns:minmax(300px,480px) 1fr;gap:22px}.plan-choice-list{display:grid;gap:9px}.plan-choice-list button{text-align:left;background:transparent;color:inherit;border:1px solid var(--line,#dbe2ec)}.plan-choice-list button.is-correct{background:rgba(46,148,91,.16);border-color:rgba(46,148,91,.55)}.plan-choice-list button.is-wrong{background:rgba(206,61,61,.14);border-color:rgba(206,61,61,.55)}.plan-result{margin-top:14px;padding:15px;border-radius:12px;background:rgba(214,169,56,.1)}.coach-assignment-form{display:grid;gap:12px}@keyframes tjkHintPulse{50%{box-shadow:inset 0 0 0 7px #dfb64a,0 0 22px rgba(223,182,74,.7)}}

@media(max-width:1100px){.training-review-grid,.plan-task-grid,.endgame-lesson-grid{grid-template-columns:1fr 1fr}.progress-status-grid{grid-template-columns:repeat(4,minmax(0,1fr))}.training-position-layout{grid-template-columns:minmax(320px,1fr) 1fr}}
@media(max-width:760px){.training-hub-workspace{padding:22px 10px 70px}.training-system-head,.training-section-header{flex-direction:column;align-items:stretch}.training-summary-grid-v2,.training-review-grid,.plan-task-grid,.endgame-lesson-grid,.progress-layout,.coach-layout,.training-brand-card,.training-position-layout,.plan-solver{grid-template-columns:1fr}.progress-status-grid{grid-template-columns:1fr 1fr}.training-modal{padding:0}.training-modal-dialog{width:100vw;max-height:100vh;min-height:100vh;border-radius:0;padding:14px}.training-position-board,.plan-position-preview{width:min(100%,calc(100vh - 300px));margin:auto}.training-board-actions button{flex:1}.progress-day-list>div{grid-template-columns:76px 1fr 38px}.progress-day-list small{display:none}.training-system-tabs{position:sticky;top:66px;z-index:15}.training-section-card{padding:15px}}

.progress-skill-grid,.progress-training-stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:12px;margin-top:14px}
.plan-choice-list button.is-selected{outline:3px solid rgba(80,140,255,.65);transform:translateY(-1px)}
.plan-text-answer{display:grid;gap:.75rem}.plan-text-answer textarea{width:100%;resize:vertical;border:1px solid var(--line,#334155);border-radius:.75rem;background:var(--panel,#111827);color:inherit;padding:.85rem;font:inherit}.plan-multi-submit{margin-top:.75rem}.plan-instruction{padding:.8rem 1rem;border-radius:.75rem;background:rgba(59,130,246,.1)}
.plan-position-preview button.training-board-square{border:0;padding:0;cursor:pointer}.plan-position-preview button.training-board-square:hover{box-shadow:inset 0 0 0 4px rgba(59,130,246,.75)}.plan-position-preview .training-board-square.is-correct{box-shadow:inset 0 0 0 5px rgba(34,197,94,.9)}.plan-position-preview .training-board-square.is-wrong{box-shadow:inset 0 0 0 5px rgba(239,68,68,.9)}

/* v15.0.1 — resilient catalog and full-page training layout. */
.training-catalog-empty{grid-column:1/-1;min-height:220px}
.training-hub-workspace{min-height:calc(100dvh - 72px)}

/* v15.0.2 — accessible plan dialog, feedback and mobile viewport repair. */
body.tjk-training-modal-open{overflow:hidden!important}
.training-modal{overflow:auto;overscroll-behavior:contain}
.training-modal-dialog>header>button[data-training-modal-close]{display:grid;place-items:center;flex:0 0 48px;width:48px;height:48px;padding:0;border-radius:14px;cursor:pointer;font-size:2rem;line-height:1;position:relative;z-index:2}
.training-modal-dialog>header>button[data-training-modal-close]:hover,.training-modal-dialog>header>button[data-training-modal-close]:focus-visible{outline:3px solid rgba(45,111,223,.35);background:rgba(76,117,180,.12)}
.plan-choice-list button{display:grid;gap:6px;min-height:58px;padding:13px 16px;cursor:pointer}
.plan-choice-list button span{font-weight:800}
.plan-choice-list button small{display:block;font-size:.82rem;line-height:1.4;color:var(--muted,#667085);font-weight:600}
.plan-choice-list button:disabled{opacity:1;cursor:default}
.plan-choice-list button.is-correct small{color:#17613a}
.plan-choice-list button.is-wrong small{color:#8d2525}
.plan-self-grade{display:flex;gap:9px;flex-wrap:wrap;margin-top:12px}
.plan-self-grade button{min-height:44px}
.plan-text-answer small{color:var(--muted,#667085);line-height:1.45}
.training-modal-dialog [hidden]{display:none!important}
@media(max-width:760px){
  .training-modal-dialog{box-sizing:border-box;height:100dvh;min-height:0;max-height:100dvh;overflow-y:auto;padding-bottom:max(22px,env(safe-area-inset-bottom))}
  .training-modal-dialog>header{position:sticky;top:-14px;z-index:3;margin:-14px -14px 14px;padding:14px;background:var(--panel,#fff);border-bottom:1px solid var(--line,#dbe2ec)}
  .plan-position-preview{width:min(100%,calc(100dvh - 390px));min-width:270px}
}

.training-offline-banner{display:flex;align-items:center;gap:.7rem;margin:.75rem 0 1rem;padding:.8rem 1rem;border:1px solid #d8a72f;border-radius:14px;background:#fff8dd;color:#493605;font-size:.94rem;line-height:1.35}.training-offline-banner strong{flex:0 0 auto}.training-offline-banner span{opacity:.9}@media(max-width:640px){.training-offline-banner{align-items:flex-start;flex-direction:column;gap:.25rem}}

/* v15.0.4 — rating-aware planning and explicit endgame groups. */
.training-preferences{display:grid;gap:10px;justify-items:end;min-width:min(100%,430px)}
.training-rating-select{display:grid;grid-template-columns:auto minmax(130px,170px);align-items:center;gap:6px 10px;width:100%;font-weight:850}
.training-rating-select span{text-align:right}
.training-rating-select select{width:100%;border:1px solid var(--line,#dbe2ec);border-radius:11px;padding:10px 12px;background:var(--panel,#fff);color:inherit;font:inherit;font-weight:800}
.training-rating-select small{grid-column:1/-1;text-align:right;color:var(--muted,#667085);font-weight:550;line-height:1.35}
.endgame-group-tabs,.endgame-category-row{display:flex;gap:8px;flex-wrap:wrap;margin:0 0 14px}
.endgame-group-tabs button,.endgame-category-row button{background:transparent;color:inherit;border:1px solid var(--line,#dbe2ec)}
.endgame-group-tabs button.is-active,.endgame-category-row button.is-active{background:rgba(223,182,74,.2);border-color:#d2a32f}
.endgame-engine-policy{display:grid;gap:4px;max-width:310px;padding:12px 14px;border:1px solid rgba(46,148,91,.35);border-radius:12px;background:rgba(46,148,91,.1)}
.endgame-engine-policy span{color:var(--muted,#667085);font-size:.84rem;line-height:1.35}
.endgame-lesson-grid article>small{color:var(--muted,#667085);font-weight:700}
@media(max-width:760px){.training-preferences{justify-items:stretch;min-width:0}.training-rating-select{grid-template-columns:1fr}.training-rating-select span,.training-rating-select small{text-align:left}.training-rating-select small{grid-column:1}.endgame-engine-policy{max-width:none}}


/* v15.0.9 — return control after a required puzzle/study block. */
.training-session-return{
  position:fixed;
  z-index:2600;
  left:50%;
  bottom:max(18px,env(safe-area-inset-bottom));
  display:flex;
  align-items:center;
  gap:18px;
  width:min(680px,calc(100vw - 28px));
  padding:14px 16px;
  border:1px solid rgba(214,169,56,.55);
  border-radius:15px;
  background:#0b1739;
  color:#fff;
  box-shadow:0 18px 55px rgba(5,12,30,.36);
  transform:translateX(-50%);
}
.training-session-return div{display:grid;gap:2px;min-width:0;flex:1}
.training-session-return strong{font-size:1rem}
.training-session-return span{color:#c8d3e5;font-size:.84rem}
.training-session-return button{
  flex:0 0 auto;
  min-height:44px;
  padding:10px 15px;
  border:0;
  border-radius:10px;
  background:#dfb64a;
  color:#1c1a13;
  cursor:pointer;
  font-weight:900;
}
@media(max-width:620px){
  .training-session-return{align-items:stretch;flex-direction:column;gap:10px}
  .training-session-return button{width:100%}
}

/* v15.1.77 — personal puzzle board uses the same large, draggable-piece feel as the main boards. */
.training-position-board{touch-action:none;user-select:none;width:min(100%,640px)}
.training-position-board .training-board-square span{width:98%;height:98%;cursor:grab;position:relative;z-index:3}
.training-position-board .training-board-square.is-drop-target{box-shadow:inset 0 0 0 5px #f2c21a}
.training-drag-ghost{position:fixed;z-index:40000;display:grid;place-items:center;pointer-events:none;transform:translate(-50%,-50%);filter:drop-shadow(0 7px 9px rgba(0,0,0,.3))}.training-drag-ghost .tjk-chess-piece,.training-drag-ghost img,.training-drag-ghost svg{width:96%;height:96%;object-fit:contain}
@media(max-width:760px){.training-position-board{width:min(100%,calc(100dvw - 14px));max-width:none}.training-position-layout>div{min-width:0}}

/* v15.1.85 — training-plan return is always available during external tasks. */
.training-session-return.is-complete{border-color:#6eb889}.training-session-return.is-complete button{font-weight:900}.training-session-return.is-plan-complete{box-shadow:0 0 0 2px rgba(52,168,83,.22)}

/* v15.1.127 — personal mistake trainer uses the same full-size pieces, annotations and engine language as the rest of TJK-Chess. */
.training-personal-dialog{width:min(1180px,98vw)}
.training-personal-board-column{min-width:0}
.training-personal-board-row{display:flex;align-items:stretch;gap:8px;min-width:0}
.training-position-board-wrap{position:relative;flex:1;min-width:0}
.training-position-board-wrap .training-position-board{width:100%;max-width:none}
.training-position-annotations{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;z-index:8;overflow:visible}
.training-position-board .training-board-square span{width:100%;height:100%}
.training-position-board .tjk-chess-piece,.training-position-board img,.training-position-board svg:not(.training-position-annotations){width:100%;height:100%;max-width:none;object-fit:contain}
.training-position-eval{position:relative;width:28px;min-width:28px;border-radius:7px;overflow:hidden;background:#111;border:1px solid var(--line,#dbe2ec)}
.training-position-eval>div{position:absolute;left:0;right:0;bottom:0;height:50%;background:#f4f4ed;transition:height .18s ease}
.training-position-eval>span{position:absolute;z-index:2;left:50%;top:7px;transform:translateX(-50%) rotate(-90deg);transform-origin:center;white-space:nowrap;font-size:.68rem;font-weight:900;color:#fff;text-shadow:0 1px 2px #000}
.training-personal-stage{display:inline-flex;padding:6px 9px;border-radius:999px;background:rgba(59,130,246,.10);font-size:.76rem;font-weight:900;letter-spacing:.04em;text-transform:uppercase}
.training-personal-engine{width:100%;box-sizing:border-box;border:1px solid var(--line,#dbe2ec);border-radius:13px;overflow:hidden;background:var(--panel,#fff)}
.training-personal-engine-head{display:flex;justify-content:space-between;gap:12px;padding:10px 12px;border-bottom:1px solid var(--line,#dbe2ec);font-size:.82rem}
.training-personal-engine-head span{color:var(--muted,#667085)}
.training-personal-engine-line{display:grid;grid-template-columns:62px minmax(0,1fr) 38px;gap:8px;align-items:center;padding:9px 11px;border-bottom:1px solid var(--line,#dbe2ec);font-size:.82rem}
.training-personal-engine-line:last-child{border-bottom:0}.training-personal-engine-line span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.training-personal-engine-line small{text-align:right;color:var(--muted,#667085)}
.training-personal-dialog .training-review-actions{margin-top:auto}
@media(max-width:760px){.training-personal-board-row{gap:5px}.training-position-eval{width:22px;min-width:22px}.training-personal-engine-line{grid-template-columns:52px minmax(0,1fr) 34px}.training-position-board-wrap .training-position-board{width:100%}}

/* v15.1.128 — personal game mistakes mirror Computer Analysis interaction and proportions. */
.training-personal-dialog{width:min(1260px,98vw)!important}
.training-personal-layout{grid-template-columns:minmax(430px,620px) minmax(360px,1fr)!important;gap:18px!important}
.training-position-board{border:2px solid #263246;border-radius:5px!important;box-shadow:0 8px 24px rgba(20,32,50,.16)!important}
.training-board-square.light{background:#eeeecf!important}
.training-board-square.dark{background:#789b59!important}
.training-position-board .training-board-square>span{display:grid!important;place-items:center!important;width:100%!important;height:100%!important;position:relative!important;z-index:3!important}
.training-position-board .training-board-square .tjk-chess-piece,
.training-position-board .training-board-square img,
.training-position-board .training-board-square svg{width:92%!important;height:92%!important;max-width:92%!important;max-height:92%!important;object-fit:contain!important;transform:none!important}
.training-drag-ghost .tjk-chess-piece,.training-drag-ghost img,.training-drag-ghost svg{width:92%!important;height:92%!important;max-width:92%!important;max-height:92%!important}
.training-board-square.is-selected{box-shadow:inset 0 0 0 4px #f2c21a!important}
.training-board-square.is-legal::after{content:"";position:absolute;z-index:4;width:22%;height:22%;border-radius:50%;background:rgba(44,51,58,.36)!important;pointer-events:none}
.training-board-square.is-capture::after{content:"";position:absolute;z-index:4;inset:10%;width:auto;height:auto;border:5px solid rgba(44,51,58,.34)!important;border-radius:50%;background:transparent!important;pointer-events:none}
.training-board-square.is-drop-target{box-shadow:inset 0 0 0 4px #f2c21a!important}
.training-key-help{display:inline-flex;align-items:center;padding:0 8px;color:var(--muted,#667085);font-size:.74rem;font-weight:750}
.training-personal-grade{display:grid;grid-template-columns:42px minmax(0,1fr);align-items:center;gap:9px;width:100%;padding:9px 11px;border:1px solid var(--line,#dbe2ec);border-radius:10px;background:color-mix(in srgb,var(--panel,#fff) 90%,#eef3f8)}
.training-personal-grade[hidden]{display:none!important}.training-personal-grade .game-review-icon{width:38px;height:38px;margin:0}.training-personal-grade>div{display:grid;gap:1px}.training-personal-grade span{color:var(--muted,#667085);font-size:.67rem;font-weight:850;text-transform:uppercase;letter-spacing:.05em}.training-personal-grade strong{font-size:1rem}.training-personal-grade small{color:var(--muted,#667085);font-size:.72rem}
.training-personal-engine{display:flex;flex-direction:column;min-height:0!important;max-height:none!important}
.training-personal-engine-controls{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:6px;padding:7px 9px;border-bottom:1px solid var(--line,#dbe2ec);background:color-mix(in srgb,var(--panel,#fff) 94%,#eef3f8)}
.training-personal-engine-controls label{display:grid!important;gap:3px!important;color:var(--muted,#667085);font-size:.66rem!important;font-weight:850!important;text-transform:uppercase;letter-spacing:.04em}
.training-personal-engine-controls select{min-height:31px;border:1px solid var(--line,#dbe2ec);border-radius:6px;background:var(--panel,#fff);color:inherit;padding:3px 6px;font:700 .75rem inherit}
.training-personal-engine-lines{height:var(--trainer-engine-height,260px)!important;min-height:120px!important;max-height:520px!important;overflow:auto;flex:0 0 auto!important}
.training-personal-engine-line{display:grid!important;width:100%;grid-template-columns:62px minmax(0,1fr) 40px;gap:8px;align-items:center;padding:8px 10px!important;border:0!important;border-bottom:1px solid var(--line,#dbe2ec)!important;border-radius:0!important;background:var(--panel,#fff)!important;color:inherit!important;text-align:left!important;font-size:.82rem;cursor:pointer}
.training-personal-engine-line:hover,.training-personal-engine-line:focus-visible{background:color-mix(in srgb,#eaf2ff 72%,var(--panel,#fff))!important;outline:none}.training-personal-engine-line b{color:#174ea6}.training-personal-engine-line span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.training-personal-engine-line small{text-align:right;color:var(--muted,#667085)}
.training-engine-calculating{display:block;padding:12px;color:var(--muted,#667085)}
.training-personal-game{width:100%;min-height:150px;max-height:290px;display:flex;flex-direction:column;border:1px solid var(--line,#dbe2ec);border-radius:12px;overflow:hidden;background:var(--panel,#fff)}
.training-personal-game-head{display:grid;padding:9px 11px;border-bottom:1px solid var(--line,#dbe2ec);background:color-mix(in srgb,var(--panel,#fff) 93%,#eef3f8)}.training-personal-game-head span{color:#315be8;font-size:.66rem;font-weight:900;letter-spacing:.08em}.training-personal-game-head strong{font-size:.95rem}
.training-personal-game-moves{min-height:0;overflow:auto;padding:5px}.training-personal-game-row{display:grid;grid-template-columns:34px minmax(0,1fr) minmax(0,1fr);gap:4px;align-items:center;min-height:35px}.training-personal-game-row>span{padding-left:5px;color:var(--muted,#667085);font-size:.78rem}.training-personal-game-row button{display:block;width:100%;min-width:0;padding:6px 7px!important;border:1px solid transparent!important;border-radius:6px!important;background:transparent!important;color:inherit!important;text-align:left;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.training-personal-game-row button:hover{background:color-mix(in srgb,#eaf2ff 72%,var(--panel,#fff))!important}.training-personal-game-row button.is-current{border-color:#80b355!important;background:color-mix(in srgb,#dceccc 65%,var(--panel,#fff))!important}.training-personal-game-empty{padding:12px!important;font-size:.8rem!important}
@media(max-width:800px){.training-personal-layout{grid-template-columns:1fr!important}.training-personal-engine-controls{grid-template-columns:repeat(3,1fr)}.training-personal-game{max-height:240px}}

/* v15.1.129 — personal game trainer now uses Analysis Board board/engine primitives instead of its legacy board renderer. */
.training-personal-board-row{
  display:grid!important;
  grid-template-columns:24px minmax(0,1fr)!important;
  align-items:stretch!important;
  gap:6px!important;
  min-width:0;
}
.training-analysis-board-stage{
  position:relative;
  width:100%;
  min-width:0;
  aspect-ratio:1;
}
.training-analysis-board{
  width:100%!important;
  height:100%!important;
  min-width:0!important;
  max-width:none!important;
  aspect-ratio:1!important;
  border-radius:5px!important;
  overflow:hidden!important;
  touch-action:none!important;
  user-select:none!important;
}
.training-analysis-board .analysis-square{cursor:pointer}
.training-analysis-board .analysis-piece{width:100%!important;height:100%!important;display:grid!important;place-items:center!important}
.training-analysis-board .analysis-piece>.tjk-chess-piece{width:92%!important;height:92%!important;max-width:92%!important;max-height:92%!important;transform:none!important}
.training-analysis-board .analysis-piece.is-hidden{opacity:0!important}
.training-analysis-drag-ghost{position:fixed!important;top:0!important;left:0!important;z-index:50000!important;pointer-events:none!important;will-change:transform}
.training-analysis-drag-ghost>.tjk-chess-piece{width:92%!important;height:92%!important;max-width:92%!important;max-height:92%!important}
.training-personal-eval{
  width:24px!important;
  min-width:24px!important;
  height:auto!important;
  min-height:0!important;
  align-self:stretch!important;
  overflow:hidden!important;
}
.training-personal-eval>span{
  left:50%!important;
  top:5px!important;
  right:auto!important;
  bottom:auto!important;
  max-width:none!important;
  transform:translateX(-50%)!important;
  transform-origin:center!important;
  writing-mode:vertical-rl!important;
  white-space:nowrap!important;
  overflow:visible!important;
  line-height:1!important;
  font-size:.66rem!important;
}
.training-personal-engine-head{align-items:center}
.training-personal-engine-head .analysis-switch{margin-left:auto}
.training-personal-engine-state{padding:6px 10px;color:var(--muted,#667085);font-size:.72rem;border-bottom:1px solid var(--line,#dbe2ec)}
.training-personal-engine-controls{
  grid-template-columns:minmax(82px,1fr) minmax(82px,1fr) minmax(82px,1fr) auto!important;
  align-items:end!important;
}
.training-personal-engine-controls .training-engine-arrow-toggle{
  min-height:31px!important;
  padding:5px 9px!important;
  white-space:nowrap;
  background:transparent!important;
  color:inherit!important;
  border:1px solid var(--line,#dbe2ec)!important;
  border-radius:6px!important;
  font-size:.72rem!important;
}
.training-personal-engine-controls .training-engine-arrow-toggle.is-active{
  background:rgba(49,91,232,.10)!important;
  border-color:rgba(49,91,232,.48)!important;
  color:#2454c6!important;
}
.training-personal-engine-line.is-loading{cursor:default!important;color:var(--muted,#667085)!important}
.training-plan-list>button.is-done{opacity:.66}
.training-plan-list>button.is-done i{font-weight:900}
@media(max-width:800px){
  .training-personal-board-row{grid-template-columns:20px minmax(0,1fr)!important;gap:4px!important}
  .training-personal-eval{width:20px!important;min-width:20px!important}
  .training-personal-engine-controls{grid-template-columns:repeat(2,minmax(0,1fr))!important}
}


/* v15.1.130 — keep the board in the board column when the eval bar is hidden.
   The previous grid auto-placement moved the board into the 24px eval track,
   which made the whole chessboard appear as a tiny icon before Stockfish was shown. */
.training-personal-board-row.analysis-board-wrap{
  display:grid!important;
  grid-template-columns:24px minmax(0,1fr)!important;
  width:min(100%,690px)!important;
  max-width:690px!important;
  margin:0 auto!important;
  gap:5px!important;
  align-items:stretch!important;
}
.training-personal-board-row>.training-personal-eval{grid-column:1!important;grid-row:1!important}
.training-personal-board-row>.training-analysis-board-stage{
  grid-column:2!important;
  grid-row:1!important;
  width:100%!important;
  min-width:0!important;
  aspect-ratio:1!important;
}
.training-personal-board-row>.training-analysis-board-stage>.training-analysis-board{
  display:grid!important;
  grid-template-columns:repeat(8,minmax(0,1fr))!important;
  grid-template-rows:repeat(8,minmax(0,1fr))!important;
  width:100%!important;
  height:100%!important;
  min-width:0!important;
  aspect-ratio:1!important;
}
@media(max-width:800px){
  .training-personal-board-row.analysis-board-wrap{grid-template-columns:20px minmax(0,1fr)!important;gap:2px!important;width:100%!important;max-width:none!important}
}


/* v15.1.131 — Tactic-from-game drag + engine-lines sizing fixes.
   Drag ghosts must sit above the z-index:10000 training modal; the shared Analysis Board
   ghost normally uses z-index:5000. "Platz" now controls the actual engine-line viewport. */
.training-modal .training-analysis-board .analysis-piece.is-hidden{visibility:hidden!important;opacity:0!important}
.training-analysis-drag-ghost{display:grid!important;place-items:center!important;background:transparent!important;overflow:visible!important}
.training-analysis-drag-ghost>.tjk-chess-piece{display:block!important;width:92%!important;height:92%!important;max-width:92%!important;max-height:92%!important;visibility:visible!important;opacity:1!important}
.training-personal-engine-lines{box-sizing:border-box!important}

/* v15.1.132 — smoother personal-trainer drag, Analysis-Board eval-label placement,
   compact fixed training-plan return, and analysis navigation buttons. */
.training-analysis-drag-ghost{
  transform:translate3d(0,0,0);
  backface-visibility:hidden;
  contain:layout paint style;
}
.training-personal-eval>span{top:auto!important;bottom:auto!important}
.training-personal-eval.is-white-advantage:not(.is-flipped)>span{top:auto!important;bottom:6px!important}
.training-personal-eval.is-black-advantage:not(.is-flipped)>span{top:6px!important;bottom:auto!important}
.training-personal-eval.is-flipped.is-white-advantage>span{top:6px!important;bottom:auto!important}
.training-personal-eval.is-flipped.is-black-advantage>span{top:auto!important;bottom:6px!important}
.training-board-actions .training-analysis-nav{min-width:42px;padding:8px 11px}
.training-board-actions .training-analysis-nav:disabled{opacity:.35;cursor:default}

@media (min-width: 761px){
  .training-session-return{
    left:auto!important;
    right:18px!important;
    bottom:18px!important;
    transform:none!important;
    width:min(360px,calc(100vw - 36px))!important;
    padding:10px 12px!important;
    gap:10px!important;
  }
  .training-session-return span{display:none}
  .training-session-return button{min-height:40px;padding:8px 12px}
}


/* v15.1.134 — standard plan/position tasks reuse the same board proportions as Tactic from Game. */
.training-standard-dialog{width:min(1120px,96vw)!important}
.training-standard-layout{grid-template-columns:minmax(360px,560px) minmax(320px,1fr)!important;gap:20px!important;align-items:start!important}
.training-standard-board-column{min-width:0}
.training-standard-board-stage{position:relative;width:min(100%,560px);aspect-ratio:1;margin:0 auto}
.training-standard-board-stage>.training-analysis-board{display:grid!important;grid-template-columns:repeat(8,minmax(0,1fr))!important;grid-template-rows:repeat(8,minmax(0,1fr))!important;width:100%!important;height:100%!important;aspect-ratio:1!important}
.training-analysis-drag-ghost{filter:none!important;box-shadow:none!important;will-change:transform!important;contain:layout paint style!important}
@media(max-width:760px){.training-standard-layout{grid-template-columns:1fr!important}.training-standard-board-stage{width:min(100%,560px)}}

/* v15.1.148 — compact return-to-training-plan control during external tasks. */
@media (min-width:761px){
  .training-session-return{
    width:max-content!important;
    max-width:calc(100vw - 36px)!important;
    gap:7px!important;
    padding:8px 9px!important;
  }
  .training-session-return div{
    flex:0 0 auto!important;
    display:block!important;
  }
  .training-session-return strong{
    white-space:nowrap!important;
  }
  .training-session-return button{
    min-height:38px!important;
    padding:7px 10px!important;
    white-space:nowrap!important;
  }
}


/* v15.1.149 — Tactic from Game: Analysis-Board-like right panel and notation. */
.training-personal-side{display:flex!important;flex-direction:column!important;align-items:stretch!important;gap:10px!important;min-width:0!important;width:100%!important}
.training-personal-side>.training-personal-engine,
.training-personal-side>.training-personal-game{width:100%!important;min-width:0!important;max-width:none!important;box-sizing:border-box!important}
.training-personal-engine-lines{width:100%!important;min-width:0!important;box-sizing:border-box!important}
.training-personal-engine-lines>.analysis-pv-row{display:grid!important;grid-template-columns:64px minmax(0,1fr) 38px!important;width:100%!important;min-width:0!important;box-sizing:border-box!important;margin:0!important;border-radius:0!important}
.training-personal-game{min-height:0!important;max-height:none!important;flex:1 1 auto!important}
.training-personal-game-moves{min-height:0!important;overflow:auto!important;padding:0!important}
.training-personal-analysis-tree{width:100%!important;min-width:0!important}
.training-personal-analysis-tree .analysis-mainline-row{display:grid!important;grid-template-columns:42px minmax(0,1fr) minmax(0,1fr)!important;align-items:stretch!important;width:100%!important;min-height:30px!important;padding:0!important;box-sizing:border-box!important}
.training-personal-analysis-tree .analysis-mainline-number{display:flex!important;align-items:center!important;justify-content:center!important;min-height:30px!important;color:#758196!important;font-size:13px!important;font-weight:800!important;border-right:1px solid #dbe2ec!important}
.training-personal-analysis-tree .analysis-mainline-cell{display:flex!important;align-items:stretch!important;min-width:0!important;min-height:30px!important}
.training-personal-analysis-tree .analysis-mainline-cell+.analysis-mainline-cell{border-left:1px solid #edf1f6!important}
.training-personal-analysis-tree .analysis-mainline-cell>.analysis-move-unit{display:flex!important;flex:1 1 auto!important;min-width:0!important;height:100%!important}
.training-personal-analysis-tree .analysis-mainline-cell .analysis-tree-move{display:flex!important;align-items:center!important;width:100%!important;min-width:0!important;min-height:30px!important;margin:0!important;padding:2px 8px!important;border:0!important;border-radius:0!important;background:transparent!important;color:#172b4d!important;font-size:15.5px!important;font-weight:700!important;line-height:1.12!important;box-sizing:border-box!important;text-align:left!important}
.training-personal-analysis-tree .analysis-mainline-cell .analysis-tree-move:hover{background:#eef4ff!important}
.training-personal-analysis-tree .analysis-mainline-cell .analysis-tree-move.is-current{background:#2865d8!important;color:#fff!important}
html[data-theme="dark"] .training-personal-analysis-tree .analysis-mainline-number{color:#aeb9c8!important;border-color:#344153!important}
html[data-theme="dark"] .training-personal-analysis-tree .analysis-mainline-cell+.analysis-mainline-cell{border-color:#344153!important}
html[data-theme="dark"] .training-personal-analysis-tree .analysis-mainline-cell .analysis-tree-move{color:#e7edf5!important}
html[data-theme="dark"] .training-personal-analysis-tree .analysis-mainline-cell .analysis-tree-move:hover{background:#26364b!important}
.training-personal-layout.is-complete{align-items:start!important}
.training-personal-layout.is-complete .training-personal-side{align-self:start!important}
@media(max-width:800px){.training-personal-analysis-tree .analysis-mainline-row{grid-template-columns:34px minmax(0,1fr) minmax(0,1fr)!important}.training-personal-analysis-tree .analysis-mainline-cell .analysis-tree-move{font-size:14.5px!important;padding:2px 7px!important}}

/* v15.1.158 — founder endgame library management */
.founder-endgame-manager{margin:16px 0 18px;padding:16px;border:1px solid #bdd2f2;border-radius:13px;background:#f4f8ff}.founder-endgame-manager>header{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;margin-bottom:13px}.founder-endgame-manager h3{margin:2px 0 4px}.founder-endgame-manager p{margin:0;color:#5d6d84}.founder-endgame-manager form{display:grid;grid-template-columns:1.3fr 1fr .8fr .9fr;gap:10px}.founder-endgame-manager label{display:grid;gap:5px;font-size:.78rem;font-weight:800;color:#475569}.founder-endgame-manager input,.founder-endgame-manager select,.founder-endgame-manager textarea{width:100%;box-sizing:border-box;padding:9px 10px;border:1px solid #c8d3e1;border-radius:8px;background:#fff;color:#172842}.founder-endgame-manager .is-wide{grid-column:1/-1}.founder-endgame-actions{display:flex;justify-content:flex-end}.founder-endgame-actions button{min-height:40px;padding:8px 14px;border:0;border-radius:8px;background:#0b5fe7;color:#fff;font-weight:850;cursor:pointer}.endgame-lesson-grid article.is-founder-endgame{box-shadow:inset 0 3px 0 #0b5fe7}.endgame-lesson-grid article div{display:flex;flex-wrap:wrap;gap:7px}.endgame-lesson-grid button.secondary{background:#eef3fa;color:#28405f}.endgame-lesson-grid button.danger{background:#fff1f1;color:#b42318;border-color:#f2c4c4}
html[data-theme="dark"] .founder-endgame-manager{background:#16243a;border-color:#36547c}html[data-theme="dark"] .founder-endgame-manager p,html[data-theme="dark"] .founder-endgame-manager label{color:#c3cede}html[data-theme="dark"] .founder-endgame-manager input,html[data-theme="dark"] .founder-endgame-manager select,html[data-theme="dark"] .founder-endgame-manager textarea{background:#0f1724;color:#edf2f7;border-color:#41506a}
@media(max-width:900px){.founder-endgame-manager form{grid-template-columns:1fr 1fr}}@media(max-width:560px){.founder-endgame-manager form{grid-template-columns:1fr}.founder-endgame-manager .is-wide{grid-column:auto}}