:root{--wine:#8a1c2b;--wine-deep:#6c1421;--stone:#f6f3ee;--paper:#fff;--ink:#1a1c22;--muted:#5b6270;--line:#e6e1d8;--soft-wine:#f5e9e9;--success:#286044;--board-light:#f0e6d6;--board-dark:#a28974;--radius:8px;font-family:system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;color:var(--ink);background:var(--stone);font-synthesis:none}
.login-page{min-height:100svh;display:grid;place-items:center}.login-main{width:100%;max-width:430px;min-height:0;padding:32px 24px}.login-main .brand{margin-bottom:48px}.login-main h1{font-size:32px;margin-bottom:12px}.login-main form{margin:28px 0 18px}.login-main label{display:block;font-weight:600;font-size:13px;margin-bottom:8px}.login-main input{display:block;width:100%;min-height:54px;border:1px solid var(--line);border-radius:5px;background:white;padding:10px 14px;font-size:22px;letter-spacing:6px;margin-bottom:16px}.login-main #login-status{min-height:24px;margin-top:12px;color:var(--wine)}.account-tools{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.account-tools button{border:0;background:none;padding:8px 0;min-height:44px;color:var(--muted);font-size:11px}#sync-status[data-kind=saved]{color:var(--success)}#sync-status[data-kind=offline],#sync-status[data-kind=auth]{color:var(--wine)}
*{box-sizing:border-box}body{margin:0;font-size:15px;line-height:1.55}button,input,select{font:inherit}button,a,input,select{-webkit-tap-highlight-color:transparent}button,a{touch-action:manipulation}button{cursor:pointer}a{color:inherit;text-underline-offset:4px}button:focus-visible,a:focus-visible,select:focus-visible,input:focus-visible{outline:3px solid var(--wine);outline-offset:3px}button:disabled{cursor:default;opacity:.5}h1,h2,h3,p{margin:0}h1{font-size:clamp(28px,4vw,40px);font-weight:700;line-height:1.18;letter-spacing:-1.1px}h2{font-size:23px;line-height:1.3;letter-spacing:-.5px}h3{font-size:17px;line-height:1.4}p{color:var(--muted)}small{font-size:12px}.skip{position:absolute;left:16px;top:-100px;background:#fff;padding:12px;z-index:100}.skip:focus{top:10px}.topbar{background:var(--paper);border-bottom:1px solid var(--line);padding:16px 22px 0;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-size:21px;font-weight:800;letter-spacing:-.8px;line-height:1}.brand-soft{font-weight:500}.brand small{display:block;margin-top:7px;letter-spacing:1.5px;font-size:8px;font-weight:600;color:var(--muted)}.brand-mark{display:flex;align-items:baseline;justify-content:center;background:var(--wine);color:white;font-family:Georgia,serif;font-size:31px;width:43px;height:43px;padding-top:5px;border-radius:5px;font-weight:400;letter-spacing:-3px}.brand-mark span{font-size:23px}.topbar nav{display:flex;gap:27px;width:100%;height:43px}.topbar nav a{display:flex;align-items:center;text-decoration:none;font-size:13px;font-weight:600;color:var(--muted);border-bottom:2px solid transparent}.topbar nav a[aria-current=page]{color:var(--wine);border-bottom-color:var(--wine)}.header-note{display:none}main{max-width:1280px;margin:auto;padding:25px 18px 36px;min-height:calc(100vh - 184px)}.page-intro{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:26px}.eyebrow{color:var(--wine);font-size:10px;font-weight:750;letter-spacing:1.8px;margin-bottom:8px}.page-intro p{margin-top:8px;max-width:54ch;font-size:14px}.date-note{display:none}.workspace{display:grid;gap:26px}.board-panel{min-width:0}.board-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}.side-to-move{display:flex;align-items:center;gap:8px;font-weight:650;font-size:13px}.side-dot{width:12px;height:12px;border-radius:50%;background:var(--ink);border:1px solid #6c6561}.side-dot.white{background:#fff}.board-meta{color:var(--muted);font-size:12px;font-variant-numeric:tabular-nums}.board-frame{background:#3f3732;padding:8px;border-radius:4px;box-shadow:0 9px 28px #34261b12}.board{aspect-ratio:1;display:grid;grid-template-columns:repeat(8,1fr);position:relative;user-select:none;touch-action:pan-y}.square{position:relative;border:0;border-radius:0;padding:0;display:grid;place-items:center;aspect-ratio:1;background:var(--board-light);min-width:0;line-height:1}.square.dark{background:var(--board-dark)}.square img{width:92%;height:92%;pointer-events:none;filter:drop-shadow(0 2px 1px #0002)}.square.selected{box-shadow:inset 0 0 0 4px var(--wine);background:#d7be9e}.square.last{background:#dbc297}.square.dark.last{background:#b29566}.square.hinted:after{content:'';position:absolute;inset:6%;border:3px solid var(--wine);border-radius:50%;pointer-events:none}.square .coord{position:absolute;font-size:9px;font-weight:750;z-index:1;pointer-events:none;color:#79624e}.square.dark .coord{color:#fff8ed}.coord.rank{left:3px;top:3px}.coord.file{right:3px;bottom:3px}.board.paused:after{content:'Σε παύση';position:absolute;inset:0;display:grid;place-items:center;background:#f6f3eef0;font-size:24px;font-weight:700;backdrop-filter:blur(7px)}.board-tools{display:flex;align-items:center;justify-content:space-between;padding:12px 0 0;gap:10px}.board-tools button{border:0;background:transparent;color:var(--muted);padding:8px 0;min-height:42px;font-size:12px}.board-tools .clock{font-size:14px;font-variant-numeric:tabular-nums;font-weight:650;color:var(--ink)}.board-tools .clock.over{color:var(--wine)}.board-hint{font-size:12px;color:var(--muted);text-align:center;padding-top:4px}.inspector{display:flex;flex-direction:column;gap:22px}.session-status{display:flex;align-items:center;justify-content:space-between;font-size:11px;letter-spacing:1.1px;color:var(--muted);font-weight:700}.session-status .counter{color:var(--wine);font-size:12px;font-variant-numeric:tabular-nums}.progress-track{height:3px;background:var(--line);margin-top:9px}.progress-fill{height:100%;background:var(--wine);transition:width .25s}.exercise-heading{margin:18px 0 8px;font-size:25px;letter-spacing:-.7px}.exercise-copy{font-size:14px;line-height:1.65}.exercise-copy strong{color:var(--ink)}.feedback{padding:14px 16px;margin-top:16px;border-left:3px solid var(--wine);background:var(--soft-wine);font-size:14px;min-height:50px}.feedback.success{border-color:var(--success);background:#eaf1eb;color:var(--success)}.feedback p{font-size:13px;color:inherit;margin-top:4px}.action-row{display:flex;gap:8px;margin-top:18px;flex-wrap:wrap}.primary,.secondary,.text-button{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 18px;min-height:46px;border-radius:5px;border:1px solid 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strong{display:block;font-size:30px;line-height:1.1;letter-spacing:-1px;font-variant-numeric:tabular-nums}.summary-numbers span{display:block;font-size:11px;color:var(--muted);margin-top:5px}.solution{margin-top:16px}.solution-controls{display:flex;align-items:center;gap:8px;margin-bottom:10px}.move-list{display:flex;flex-wrap:wrap;gap:5px;font-variant-numeric:tabular-nums}.move-list button{background:transparent;border:1px solid var(--line);border-radius:4px;padding:6px 9px;min-height:36px;font-size:13px}.move-list button.current{background:var(--wine);color:white;border-color:var(--wine)}.source-link{font-size:12px;color:var(--wine)}.learning-note{margin-top:15px;font-size:13px;padding:12px 0;border-top:1px solid var(--line)}.learning-note p{margin:6px 0}.program-layout{display:grid;gap:30px}.phase-list{display:grid;gap:0;margin:22px 0}.phase{display:grid;grid-template-columns:36px 1fr;gap:14px;padding:18px 0;border-bottom:1px solid var(--line)}.phase-num{font:italic 26px Georgia,serif;color:var(--wine)}.phase p{font-size:13px;margin-top:6px}.topic-list{margin-top:18px;display:grid}.topic{padding:15px 0;border-bottom:1px solid var(--line);display:grid;grid-template-columns:1fr auto;gap:14px;align-items:center}.topic small{color:var(--muted)}.topic button{white-space:nowrap}.topic h3{font-size:15px;margin-bottom:3px}.topic details{grid-column:1/-1;margin-top:0;font-size:13px}.topic summary{cursor:pointer;color:var(--wine);padding:4px 0;min-height:32px}.topic details p{margin-top:7px;max-width:78ch}.reading-block{margin-top:28px;padding-top:24px;border-top:1px solid var(--line)}.reading-block h3{margin-bottom:9px}.reading-list{padding:0;list-style:none;margin:14px 0}.reading-list li{padding:13px 0;border-bottom:1px solid var(--line)}.reading-list a{font-weight:600;color:var(--wine);font-size:14px}.reading-list p{font-size:12px;margin-top:4px}.reading-list label{display:flex;align-items:center;gap:8px;margin-top:9px;color:var(--muted);font-size:12px}.reading-list input{accent-color:var(--wine);width:18px;height:18px}.progress-overview{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;border-bottom:1px solid var(--line);padding:8px 0 26px;margin-bottom:24px}.metric .value{font-size:36px;line-height:1.1;letter-spacing:-1px;font-weight:650;font-variant-numeric:tabular-nums}.metric p{font-size:12px;margin-top:7px}.progress-columns{display:grid;gap:30px}.theme-progress{display:grid;gap:14px;margin-top:20px}.theme-progress-row{display:grid;grid-template-columns:130px 1fr 44px;gap:12px;align-items:center;font-size:12px}.theme-progress-row .bar{height:6px;background:var(--line);border-radius:3px;overflow:hidden}.theme-progress-row .bar span{display:block;height:100%;background:var(--wine)}.theme-progress-row .pct{text-align:right;font-variant-numeric:tabular-nums;color:var(--muted)}.empty-state{border-top:1px solid var(--line);padding:26px 0}.empty-state p{margin:10px 0 18px;max-width:60ch;font-size:14px}.history-table{border-collapse:collapse;width:100%;font-size:12px;margin:16px 0}.history-table th{text-align:left;font-weight:500;color:var(--muted)}.history-table th,.history-table td{padding:11px 6px;border-bottom:1px solid var(--line)}.history-table th:first-child,.history-table td:first-child{padding-left:0}.history-scroll{overflow:auto}.trend{display:flex;gap:6px;align-items:flex-end;height:95px;margin:20px 0 8px}.trend-day{flex:1;min-width:0;height:100%;display:flex;flex-direction:column;justify-content:flex-end;align-items:center;gap:6px}.trend-day .column{background:var(--wine);width:100%;max-width:22px;border-radius:3px 3px 0 0;min-height:2px}.trend-day span{font-size:9px;color:var(--muted)}.sources{max-width:780px}.sources section{padding:22px 0;border-bottom:1px solid var(--line)}.sources section h2{font-size:20px;margin-bottom:10px}.sources section p,.sources li{font-size:14px;margin-bottom:10px}.sources a{color:var(--wine)}.storage-notice{margin-top:24px;padding-top:20px;border-top:1px solid var(--line)}footer{max-width:1280px;margin:auto;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;padding:20px 18px;border-top:1px solid var(--line);font-size:11px;color:var(--muted)}.footer-dot{margin:0 7px;color:var(--wine)}.toast{position:fixed;bottom:20px;left:50%;transform:translateX(-50%) translateY(20px);width:max-content;max-width:calc(100vw - 28px);background:var(--ink);color:#fff;padding:12px 18px;border-radius:6px;font-size:13px;box-shadow:0 5px 24px #0002;opacity:0;pointer-events:none;transition:all .2s;z-index:200}.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}dialog{max-width:440px;width:calc(100vw - 32px);border:1px solid var(--line);border-radius:10px;padding:25px;color:var(--ink);background:var(--paper)}dialog::backdrop{background:#1a1c2277;backdrop-filter:blur(3px)}dialog h2{font-size:21px;margin-bottom:12px}dialog p{font-size:14px}dialog .dialog-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:22px}.promotion-options{display:flex;gap:8px;margin:20px 0}.promotion-options button{flex:1;min-width:0;background:var(--stone);border:1px solid var(--line);border-radius:5px}.promotion-options img{width:100%}.loading{padding:50px 0;color:var(--muted)}.error-panel{max-width:600px;padding:30px 0}.error-panel p{margin:16px 0}.badge{display:inline-flex;padding:3px 7px;background:var(--soft-wine);color:var(--wine);font-size:10px;border-radius:3px;font-weight:650}.move-history{min-height:25px;margin-top:12px;font-size:13px;font-variant-numeric:tabular-nums;color:var(--muted)}.paused-notice{margin-top:14px}.alert{padding:14px;background:#fff3dc;color:#6d4f15;font-size:13px;margin-bottom:20px;border-left:3px solid #c59a42}.hidden{display:none!important}
@media(min-width:760px){.topbar{height:80px;padding:0 36px;flex-wrap:nowrap;gap:45px;justify-content:flex-start}.topbar nav{width:auto;height:80px;gap:30px}.brand{font-size:23px}.brand small{font-size:8px}.header-note{display:block;margin-left:auto;color:var(--muted);font-size:9px;letter-spacing:1.6px}main{padding:34px 36px 48px;min-height:calc(100vh - 144px)}.page-intro{margin-bottom:30px}.date-note{display:block;font-size:12px;color:var(--muted);text-align:right}.workspace{grid-template-columns:minmax(350px,1.25fr) minmax(290px,1fr);gap:38px;align-items:start}.board-frame{padding:10px}.inspector{padding:0 0 0 0;gap:22px}.board-top{margin-bottom:14px}.exercise-heading{font-size:27px}.square .coord{font-size:11px}.progress-overview{grid-template-columns:repeat(4,1fr);padding-bottom:32px}.program-layout{grid-template-columns:1.25fr 1fr;gap:54px}.progress-columns{grid-template-columns:1.3fr 1fr;gap:50px}footer{padding:20px 36px}.topic-list{margin-top:22px}.theme-progress-row{grid-template-columns:150px 1fr 44px}}
@media(min-width:1100px){.workspace{grid-template-columns:minmax(440px,580px) 1fr;gap:56px}.inspector{max-width:430px}.board-frame{padding:12px}.board-top{margin-bottom:16px}.exercise-heading{font-size:30px}.page-intro{margin-bottom:30px}}
@media(max-width:380px){.topbar{padding-inline:14px}.topbar nav{gap:24px}main{padding-inline:12px}.board-frame{padding:6px}.page-intro h1{font-size:27px}.board-tools{gap:6px}.board-tools button{font-size:11px}.theme-progress-row{grid-template-columns:115px 1fr 38px;gap:8px}.primary,.secondary{padding-inline:13px}.brand{font-size:20px}}
@media(prefers-reduced-motion:no-preference){.workspace,.program-layout,.progress-columns,.sources{animation:appear .22s ease-out}.square img{animation:piece-in .12s ease-out}@keyframes appear{from{opacity:.4;transform:translateY(5px)}to{opacity:1;transform:translateY(0)}}@keyframes piece-in{from{opacity:.6}to{opacity:1}}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important;animation:none!important}}

.board-feedback{font-size:12px;color:var(--muted);padding:7px 0;min-height:32px}.board-top{scroll-margin-top:12px}@media(max-width:759px){.topbar{padding-top:12px;gap:7px}.topbar nav{height:37px}main{padding-top:20px}.page-intro .eyebrow{display:none}.page-intro h1{font-size:26px}.page-intro{margin-bottom:22px}.page-intro p{font-size:13px;margin-top:5px}.workspace{gap:20px}}
.today-layout{display:grid;gap:28px}.today-main{min-width:0}.assessment-summary{padding-bottom:20px;border-bottom:1px solid var(--line)}.assessment-summary h2{font-size:15px;font-weight:600;letter-spacing:0}.assessment-score{display:flex;align-items:center;gap:18px;margin:10px 0}.assessment-score>strong{font-size:46px;letter-spacing:-1.8px;line-height:1.1;font-weight:700;font-variant-numeric:tabular-nums}.assessment-score strong span{font-size:26px;color:var(--muted);letter-spacing:-1px;font-weight:500}.assessment-score>span{font-size:13px;color:var(--muted);line-height:1.45}.next-step{padding-top:22px}.next-step .eyebrow{font-size:9px;letter-spacing:1.3px;margin-bottom:8px}.next-step h2{font-size:23px}.next-step>p{font-size:14px;margin-top:9px;max-width:65ch}.next-step .session-mix{font-size:11px;line-height:1.6}.guided-action{margin-top:17px;width:100%;min-height:48px;font-size:13px}.today-links{display:flex;flex-direction:column;align-items:flex-start;margin-top:8px}.today-links>a,.today-links>button{font-size:12px;min-height:44px;padding:10px 0;color:var(--wine)}.today-links>a{display:inline-flex;align-items:center}.today-links>button{color:var(--muted);font-weight:500}.today-context{border-top:1px solid var(--line);padding-top:20px}.today-context h2{font-size:16px}.today-context p{font-size:13px;margin-top:9px}.today-context .note{font-size:12px}.training-choices{border-top:1px solid var(--line);margin-top:12px}.training-choices>summary,.progress-details>summary,.assessment-breakdown>summary{cursor:pointer;min-height:44px;padding:12px 0;color:var(--wine);font-size:13px;font-weight:600}.training-choices .session-picker{padding:0;border-top:0}.training-choices .select-row{flex-wrap:wrap}.session-done{font-size:13px;margin-bottom:20px;padding-left:12px;border-left:3px solid var(--success);color:var(--success)}.progress-focus{display:grid;gap:32px}.assessment-comparison h2{font-size:21px;max-width:34ch}.assessment-pair{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin:24px 0 18px}.assessment-measure h3{font-size:12px;color:var(--muted);font-weight:600;margin-bottom:9px;letter-spacing:0}.assessment-measure>strong{display:block;font-size:38px;line-height:1.15;font-variant-numeric:tabular-nums;letter-spacing:-1px}.assessment-measure>strong span{font-size:24px;font-weight:500;color:var(--muted)}.assessment-measure>strong.unmeasured{color:#a19b93;font-weight:400}.assessment-measure p{font-size:11px;margin-top:5px}.assessment-measure .note{font-size:11px}.comparison-copy{font-size:14px;line-height:1.65;margin:12px 0 8px;max-width:70ch}.band-results{margin:14px 0}.band-results th:not(:first-child),.band-results td:not(:first-child){text-align:right;font-variant-numeric:tabular-nums;white-space:nowrap}.band-results td{font-size:13px}.assessment-breakdown{margin-top:6px}.assessment-breakdown>summary{font-size:12px;font-weight:500}.assessment-breakdown p{margin-bottom:8px}.pending-assessment{margin-top:16px;color:var(--wine)}.assessment-comparison .action-row{margin-top:13px}.assessment-comparison .action-row .primary{width:100%}.assessment-comparison .action-row .text-button{padding-inline:0;font-weight:500;font-size:12px}.practice-volume{border-top:1px solid var(--line);padding-top:24px}.practice-volume>h2{font-size:21px;margin-bottom:10px}.practice-empty{font-size:14px;margin-top:16px}.practice-volume .progress-overview{margin-top:18px;border-bottom:0;padding-bottom:0}.practice-volume .metric .value{font-size:30px}.practice-volume h3{margin-top:22px}.progress-details{border-top:1px solid var(--line);margin-top:30px}.progress-details .progress-columns{padding-top:18px}.progress-details h2{font-size:20px;margin-bottom:10px}.progress-details .theme-progress-row{grid-template-columns:minmax(120px,1fr) 1fr 35px}.storage-notice>h3{font-size:16px}.storage-notice>.note{margin-top:8px}@media(min-width:760px){.today-layout{grid-template-columns:minmax(400px,680px) minmax(200px,1fr);gap:64px;align-items:start}.today-context{border-top:0;border-left:1px solid var(--line);padding:0 0 0 28px;max-width:320px}.guided-action{width:auto;padding-inline:24px}.today-links{flex-direction:row;gap:24px;align-items:center}.assessment-score>strong{font-size:54px}.next-step h2{font-size:26px}.progress-focus{grid-template-columns:minmax(400px,1.4fr) minmax(230px,1fr);gap:54px;align-items:start}.practice-volume{border-top:0;border-left:1px solid var(--line);padding:0 0 0 28px}.practice-volume .progress-overview{grid-template-columns:1fr 1fr}.assessment-comparison .action-row .primary{width:auto}.assessment-measure>strong{font-size:44px}}