:root{--bg-primary: #1a1b26;--bg-secondary: #1e1e2e;--bg-tertiary: #2a2a3e;--bg-surface: #242438;--bg-hover: #33334d;--text-primary: #c0caf5;--text-secondary: #8892b0;--text-muted: #565f89;--border-subtle: #292e42;--border-default: #3b4261;--border-focus: #7aa2f7;--accent: #7aa2f7;--accent-warn: #e0af68;--accent-danger: #f7768e;--accent-success: #9ece6a;--pos-NOUN: #e0af68;--pos-VERB: #f7768e;--pos-ADJ: #9ece6a;--pos-ADV: #73daca;--pos-DET: #7dcfff;--pos-PRON: #7dcfff;--pos-PROPN: #ff9e64;--pos-ADP: #bb9af7;--pos-CCONJ: #9d7cd8;--pos-SCONJ: #7aa2f7;--pos-PART: #c0caf5;--pos-NUM: #e06c75;--pos-PUNCT: #565f89;--pos-AUX: #f7768e;--pos-INTJ: #ff007f;--pos-X: #565f89;--edge-color: #3b4261;--root-border: #7aa2f7;--font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-greek: "Noto Serif", "Gentium", "Palatino Linotype", "Times New Roman", serif;--radius-sm: 4px;--radius-md: 6px;--radius-lg: 10px;--t-fast: .1s ease;--t-normal: .2s ease}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body{height:100%;font-family:var(--font-body);font-size:14px;color:var(--text-primary);background:var(--bg-primary);overflow:hidden}#app{display:flex;flex-direction:column;height:100vh}#toolbar{display:flex;align-items:center;justify-content:space-between;padding:8px 16px;background:var(--bg-secondary);border-bottom:1px solid var(--border-subtle);z-index:100;flex-shrink:0}#toolbar h1{font-size:18px;font-weight:700;color:var(--accent);letter-spacing:-.5px}#toolbar-right{display:flex;align-items:center;gap:8px}#toolbar button{padding:4px 12px;background:var(--bg-tertiary);color:var(--text-primary);border:1px solid var(--border-default);border-radius:var(--radius-sm);font-size:13px;cursor:pointer;transition:background var(--t-fast),border-color var(--t-fast)}#toolbar button:hover{background:var(--bg-hover);border-color:var(--border-focus)}#toolbar button:active{transform:scale(.97)}.filename{color:var(--text-muted);font-size:13px;margin-left:8px}#main{display:flex;flex:1;overflow:hidden}#sidebar{width:220px;min-width:180px;background:var(--bg-secondary);border-right:none;display:flex;flex-direction:column;overflow:hidden}.resize-handle{width:6px;cursor:col-resize;position:relative;flex-shrink:0;z-index:50;transition:background var(--t-fast)}.resize-handle:after{content:"";position:absolute;top:0;bottom:0;left:50%;transform:translate(-50%);width:1px;background:var(--border-subtle);transition:background var(--t-fast),width var(--t-fast)}.resize-handle:hover:after,body.resizing .resize-handle:after{background:var(--accent);width:3px}#sidebar h2{font-size:11px;font-weight:600;padding:12px 12px 6px;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.5px}#sentence-list{list-style:none;overflow-y:auto;flex:1}#sentence-list li{padding:6px 12px;cursor:pointer;border-left:3px solid transparent;transition:background var(--t-fast),border-color var(--t-fast)}#sentence-list li:hover{background:var(--bg-hover)}#sentence-list li.active{background:var(--bg-tertiary);border-left-color:var(--accent)}.sent-num{font-size:11px;color:var(--text-muted);font-weight:600}.sent-preview{font-size:13px;color:var(--text-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-top:2px;font-family:var(--font-greek)}#canvas-area{flex:1;position:relative;overflow:hidden;background:var(--bg-primary)}#canvas-area>svg,#canvas-area>#drop-overlay,#canvas-area>#sentence-display,#canvas-area>#tooltip{position:absolute}#canvas-area>svg{top:0;left:0;width:100%;height:100%}#sentence-display{top:10px;left:0;right:0;text-align:center;padding:8px 24px;z-index:10}.sent-cards{display:flex;flex-wrap:wrap;justify-content:center;gap:4px 6px}.sent-card{display:inline-flex;flex-direction:column;align-items:center;padding:4px 10px 6px;border-radius:var(--radius-md);background:color-mix(in srgb,var(--token-color) 12%,var(--bg-surface));border-bottom:2px solid var(--token-color);cursor:pointer;transition:background var(--t-fast),transform var(--t-fast);pointer-events:auto;max-width:160px}.sent-card:hover{background:color-mix(in srgb,var(--token-color) 28%,var(--bg-surface));transform:translateY(-1px)}.sent-card-word{font-family:var(--font-greek);font-size:15px;font-weight:700;color:var(--text-primary);line-height:1.3;text-align:center;word-break:break-word;display:flex;flex-wrap:wrap;justify-content:center;gap:1px}.sent-card-word .segment{transition:filter var(--t-fast);cursor:help}.sent-card-word .segment:hover{filter:brightness(1.3)}.sent-card-gloss{font-size:11px;color:var(--accent-warn);font-weight:500;line-height:1.3;margin-top:1px;text-align:center;max-width:140px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.sent-card-lemma{font-size:11px;color:var(--text-muted);font-style:italic;line-height:1.2;margin-top:1px}.sent-translations{margin-top:10px;display:flex;flex-direction:column;gap:4px;align-items:center}.sent-trans{font-size:14px;line-height:1.5;max-width:70ch}.sent-trans-label{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.4px;color:var(--text-muted);margin-right:6px}.sent-trans-prose{color:var(--text-primary);font-weight:500}.sent-trans-literal{color:var(--text-secondary);font-style:italic}#tree-svg{position:static;cursor:grab;display:block}#tree-svg:active{cursor:grabbing}#drop-overlay{position:absolute;top:0;right:0;bottom:0;left:0;display:none;align-items:center;justify-content:center;background:var(--bg-primary);z-index:1}#drop-overlay.visible{display:flex}#drop-overlay.visible{opacity:1;pointer-events:auto}.drop-content{text-align:center;color:var(--text-secondary)}.drop-icon{font-size:64px;display:block;margin-bottom:16px}.drop-content code{background:var(--bg-tertiary);padding:2px 6px;border-radius:var(--radius-sm);font-family:var(--font-body);font-size:13px}.hint{font-size:13px!important;color:var(--text-muted)!important}#legend-panel{width:280px;min-width:160px;background:var(--bg-secondary);border-left:1px solid var(--border-subtle);overflow-y:auto;padding:12px;transition:width var(--t-normal),padding var(--t-normal)}#legend-panel.hidden{width:0;padding:0;overflow:hidden;border:none}#legend-panel h2{font-size:11px;font-weight:600;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.5px;margin-bottom:8px;padding-bottom:4px;border-bottom:1px solid var(--border-subtle)}#legend-panel h3{font-size:11px;color:var(--text-muted);font-weight:600;margin:10px 0 4px;text-transform:uppercase}#legend-pos,#legend-deprel{margin-bottom:12px}.legend-item{display:flex;align-items:center;gap:8px;padding:2px 0;cursor:pointer;font-size:13px;transition:opacity var(--t-fast)}.legend-item:hover{opacity:.75}.legend-item.dimmed{opacity:.2}.legend-swatch{width:10px;height:10px;border-radius:2px;flex-shrink:0}.legend-label{overflow:hidden;text-overflow:ellipsis}#tooltip{position:absolute;background:var(--bg-surface);border:1px solid var(--border-default);border-radius:var(--radius-md);padding:8px 12px;font-size:13px;pointer-events:none;opacity:0;transform:translateY(4px);transition:opacity var(--t-fast),transform var(--t-fast);box-shadow:0 4px 12px #0006;z-index:200;max-width:300px}#tooltip.visible{opacity:1;transform:translateY(0)}.tt-form{font-family:var(--font-greek);font-size:16px;font-weight:600;margin-bottom:2px}.tt-lemma{color:var(--text-secondary);font-style:italic}.tt-features{margin-top:6px;display:flex;flex-wrap:wrap;gap:4px}.tt-feat{background:var(--bg-tertiary);padding:1px 6px;border-radius:var(--radius-sm);font-size:11px;color:var(--text-secondary)}.tt-deprel{margin-top:4px;font-size:12px;color:var(--text-secondary)}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;padding:24px 16px;background:#00000094;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;overflow-y:auto;z-index:1000}.modal-overlay.hidden{display:none}.morph-panel{width:min(760px,calc(100vw - 32px));max-height:calc(100vh - 48px);background:var(--bg-surface);border:1px solid var(--border-default);border-radius:var(--radius-lg);box-shadow:0 20px 60px #00000073;display:flex;flex-direction:column;overflow:hidden}#morph-body{display:flex;flex:1;flex-direction:column;min-height:0;overflow:hidden}.morph-header{display:flex;align-items:center;justify-content:space-between;padding:10px 16px;border-bottom:1px solid var(--border-subtle);background:var(--bg-surface);flex-shrink:0}.morph-header h3{font-size:13px;font-weight:600;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.5px;margin:0}.morph-close{background:none;border:none;color:var(--text-muted);font-size:20px;cursor:pointer;line-height:1;padding:2px 6px;border-radius:var(--radius-sm);transition:color var(--t-fast),background var(--t-fast)}.morph-close:hover{color:var(--text-primary);background:var(--bg-hover)}.morph-word-display{padding:16px;border-bottom:1px solid var(--border-subtle);text-align:center;flex-shrink:0}.morph-word-meta{display:flex;align-items:baseline;justify-content:center;gap:8px;flex-wrap:wrap;margin-bottom:6px}.morph-word-form{font-size:18px;font-weight:700;font-family:var(--font-greek)}.morph-word-lemma{font-size:14px;color:var(--text-secondary);font-style:italic}.morph-word-definition{font-size:14px;color:var(--text-primary);font-weight:500}.morph-word-pos{font-size:12px;color:var(--text-muted);text-transform:uppercase;letter-spacing:.08em}.morph-char-row{display:flex;justify-content:center;gap:1px;margin-bottom:4px;flex-wrap:wrap}.morph-char{font-family:var(--font-greek);font-size:24px;font-weight:700;text-align:center;line-height:1.4;padding:2px 3px;border-bottom:3px solid;transition:filter var(--t-fast);cursor:help}.morph-char:hover{filter:brightness(1.3)}.morph-char-row-whole{margin-top:4px}.morph-char-all{font-size:18px;opacity:.9;letter-spacing:.04em;border-bottom-style:dashed}.morph-word-underlined{display:inline-flex;flex-wrap:wrap;justify-content:center;position:relative;padding-bottom:8px}.morph-word-underlined:after{content:"";position:absolute;left:0;right:0;bottom:0;height:4px;border-radius:999px;background:var(--whole-word-underline);opacity:.95}.morph-feat-bars{display:flex;justify-content:center;align-items:flex-start;gap:2px;margin:0 auto;max-width:90%}.morph-feat-bar{display:flex;flex-direction:column;align-items:center;padding-top:6px;margin-top:2px;font-size:10px;color:var(--text-secondary);font-family:var(--font-body);white-space:nowrap}.morph-feat-bar span:first-child{font-weight:700;font-size:10px;text-transform:uppercase;letter-spacing:.3px;opacity:.9}.morph-bar-val{font-size:11px;font-weight:600;color:var(--text-primary);margin-top:1px}.morph-char-legend{display:flex;justify-content:center;gap:10px;flex-wrap:wrap;font-size:11px;color:var(--text-secondary);margin-top:6px}.morph-char-legend-item{display:flex;align-items:center;gap:4px}.morph-char-legend-swatch{width:8px;height:8px;border-radius:2px}.morph-content{padding:12px 16px 16px;overflow-y:auto;flex:1}.morph-empty{text-align:center;color:var(--text-muted);font-size:13px;padding:12px}.morph-feat{display:flex;align-items:baseline;gap:8px;padding:6px 10px;margin-bottom:4px;background:var(--bg-secondary);border-radius:var(--radius-sm);border-left:3px solid var(--feat-color, var(--border-default));transition:background var(--t-fast)}.morph-feat:hover{background:var(--bg-hover)}.morph-feat-key{font-size:12px;font-weight:700;font-family:var(--font-body);min-width:80px;text-transform:uppercase;letter-spacing:.3px}.morph-feat-val{font-size:13px;font-weight:600;color:var(--text-primary);min-width:50px}.morph-feat-desc{font-size:12px;color:var(--text-secondary);font-style:italic}.morph-segment-group{margin-bottom:10px;border-radius:6px;border-left:3px solid var(--seg-color, var(--border-default));background:#ffffff05;overflow:hidden}.morph-segment-group:last-child{margin-bottom:0}.morph-segment-header{display:flex;align-items:baseline;gap:8px;padding:5px 10px}.morph-segment-text{font-family:var(--font-greek);font-size:18px;font-weight:700;border-bottom:2px solid;padding:0 2px 1px;line-height:1.3}.morph-segment-label{font-size:11px;color:var(--text-muted);font-style:italic;text-transform:uppercase;letter-spacing:.4px}.morph-segment-features{padding:2px 6px 6px}.translation-panel{position:absolute;bottom:20px;left:50%;transform:translate(-50%);width:560px;max-width:calc(100% - 16px);max-height:70vh;background:var(--bg-surface);border:1px solid var(--border-default);border-radius:var(--radius-lg);box-shadow:0 8px 32px #00000080;z-index:150;display:flex;flex-direction:column;overflow:hidden;transition:opacity .15s ease,transform .15s ease}.translation-panel.hidden{display:none}.translation-content{padding:12px 16px 16px;overflow-y:auto;flex:1}.trans-section{margin-bottom:12px}.trans-section-label{font-size:11px;color:var(--text-muted);font-weight:600;text-transform:uppercase;letter-spacing:.5px;margin-bottom:4px}.trans-text{font-size:14px;color:var(--text-primary);line-height:1.5;font-style:italic}.trans-text.prose{font-style:normal;font-weight:500}.tree-edge{fill:none;stroke:var(--edge-color);stroke-width:1.6;transition:stroke var(--t-fast),stroke-width var(--t-fast)}.tree-edge.hl{stroke-width:2.5}.tree-edge.dim{stroke:var(--border-subtle);stroke-width:1}.edge-label{font-family:var(--font-body);font-size:9px;fill:var(--text-muted);text-anchor:middle;pointer-events:none}.edge-label.hl{fill:var(--accent);font-weight:600}.edge-label-bg{fill:var(--bg-primary);opacity:.8;rx:3;ry:3}.tnode{cursor:pointer;transition:opacity var(--t-fast)}.tnode.dim{opacity:.2}.tnode.focus{opacity:1}.tnode-rect{fill:var(--bg-surface);stroke:var(--border-default);stroke-width:1;rx:var(--radius-md);ry:var(--radius-md);transition:stroke var(--t-fast)}.tnode:hover .tnode-rect{stroke:var(--border-focus)}.tnode.root .tnode-rect{stroke:var(--root-border);stroke-width:2}.tnode.hl .tnode-rect{stroke-width:2.5;filter:drop-shadow(0 0 6px var(--accent))}.tnode-form{font-family:var(--font-greek);font-size:13px;fill:var(--text-primary);text-anchor:middle;font-weight:600;pointer-events:none}.tnode-lemma{font-family:var(--font-body);font-size:9px;fill:var(--text-secondary);text-anchor:middle;font-style:italic;pointer-events:none}.tnode-gloss{font-family:var(--font-body);font-size:9px;fill:var(--accent-warn);text-anchor:middle;font-weight:500;pointer-events:none}.pos-bar{pointer-events:none;rx:1;ry:1}.arrowhead-fill{fill:var(--edge-color)}#top-nav{display:flex;align-items:center;padding:6px 16px;background:var(--bg-secondary);border-bottom:1px solid var(--border-subtle);z-index:200;flex-shrink:0;height:36px}.nav-link{color:var(--text-secondary);text-decoration:none;font-size:13px;font-weight:600;padding:2px 8px;border-radius:var(--radius-sm);transition:color var(--t-fast),background var(--t-fast)}.nav-link:hover{color:var(--text-primary);background:var(--bg-hover)}.nav-link.active{color:var(--accent);background:var(--bg-tertiary)}.nav-divider{color:var(--border-subtle);font-size:13px}.nav-title{font-size:12px;color:var(--text-muted);margin-left:8px;font-style:italic}.nav-spacer{flex:1}.nav-hint{font-size:12px;color:var(--text-muted);letter-spacing:-.3px}.browser-container{height:calc(100vh - 36px);overflow-y:auto;padding:24px 32px;background:var(--bg-primary)}.browser-container h1{font-size:22px;font-weight:700;color:var(--accent);margin-bottom:4px}.browser-subtitle{font-size:13px;color:var(--text-muted);margin-bottom:24px}.browser-actions{display:flex;gap:10px;margin-bottom:24px}.browser-btn{padding:8px 18px;border-radius:var(--radius-md);border:1px solid var(--border-default);background:var(--bg-surface);color:var(--text-primary);font-size:13px;font-weight:600;cursor:pointer;transition:all var(--t-fast)}.browser-btn:hover{background:var(--bg-hover);border-color:var(--border-focus)}.browser-btn.primary{background:var(--accent);color:var(--bg-primary);border-color:var(--accent)}.browser-btn.primary:hover{opacity:.9}.browser-drop-zone{border:2px dashed var(--border-subtle);border-radius:var(--radius-lg);padding:32px;text-align:center;margin-bottom:24px;transition:border-color var(--t-fast),background var(--t-fast)}.browser-drop-zone.dragover{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 5%,var(--bg-primary))}.browser-drop-zone .drop-icon{font-size:40px;display:block;margin-bottom:8px}.browser-drop-zone p{color:var(--text-secondary);font-size:13px}.browser-drop-zone code{background:var(--bg-tertiary);padding:1px 6px;border-radius:var(--radius-sm)}.file-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(340px,1fr));gap:16px}.file-card{background:var(--bg-surface);border:1px solid var(--border-default);border-radius:var(--radius-lg);padding:16px 20px;cursor:pointer;transition:all var(--t-fast)}.file-card:hover{border-color:var(--border-focus);transform:translateY(-2px);box-shadow:0 4px 16px #0000004d}.file-card-name{font-size:15px;font-weight:700;color:var(--text-primary);margin-bottom:2px}.file-card-author{font-size:12px;color:var(--text-secondary);font-style:italic;margin-bottom:12px}.file-card-stats{display:flex;gap:16px;margin-bottom:14px;font-size:12px;color:var(--text-muted)}.file-card-stats span{display:flex;align-items:center;gap:4px}.file-card-mastery{width:100%;height:4px;background:var(--bg-tertiary);border-radius:2px;overflow:hidden;margin-bottom:12px}.file-card-mastery-fill{height:100%;background:var(--accent-success);border-radius:2px;transition:width .3s ease}.file-card-actions{display:flex;gap:8px}.file-card-actions button{flex:1;padding:6px 12px;font-size:12px;font-weight:600;border-radius:var(--radius-sm);border:1px solid var(--border-default);background:var(--bg-secondary);color:var(--text-primary);cursor:pointer;transition:all var(--t-fast)}.file-card-actions button:hover{background:var(--bg-hover)}.file-card-actions .action-study{background:color-mix(in srgb,var(--accent) 20%,var(--bg-secondary));border-color:var(--accent);color:var(--accent)}.file-card-actions button:disabled{opacity:.4;cursor:not-allowed}.no-files{text-align:center;padding:60px 20px;color:var(--text-muted)}.no-files .no-files-icon{font-size:48px;margin-bottom:12px}.no-files p{font-size:14px;margin-bottom:4px}.study-container{height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;background:var(--bg-primary);padding:0 16px}.study-header{width:100%;max-width:520px;margin-bottom:16px}.study-header h2{font-size:14px;font-weight:600;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.5px;margin-bottom:4px}.study-header-copy{min-width:0}.study-file-name{font-size:18px;font-weight:700;color:var(--accent)}.study-file-meta{margin-top:2px;font-size:12px;color:var(--text-muted)}.study-header-row{display:flex;align-items:center;justify-content:space-between;gap:12px}.study-sel-btn{padding:6px 12px;font-size:12px;font-weight:600;background:var(--bg-tertiary);color:var(--text-secondary);border:1px solid var(--border-default);border-radius:var(--radius-sm);cursor:pointer;white-space:nowrap;transition:all .12s ease}.study-sel-btn:hover{background:var(--bg-surface);color:var(--text-primary);border-color:var(--accent)}.study-progress{width:100%;max-width:520px;margin-bottom:24px}.study-progress-bar{width:100%;height:6px;background:var(--bg-tertiary);border-radius:3px;overflow:hidden;margin-bottom:4px}.study-progress-fill{height:100%;background:var(--accent);border-radius:3px;transition:width .3s ease}.study-progress-label{font-size:12px;color:var(--text-muted);display:flex;justify-content:space-between}.study-due-count{color:var(--accent-danger);font-weight:600}.study-card-wrap{perspective:1200px;width:100%;max-width:560px;margin-bottom:20px}.study-card{width:100%;min-height:320px;position:relative;transform-style:preserve-3d;transition:transform .4s ease;cursor:pointer}.study-card.flipped{transform:rotateY(180deg)}.study-card-face{position:absolute;top:0;right:0;bottom:0;left:0;backface-visibility:hidden;border-radius:var(--radius-lg);display:flex;flex-direction:column;align-items:center;justify-content:center;padding:32px 24px}.study-card-front{background:var(--bg-surface);border:1px solid var(--border-default)}.study-card-front .study-word{font-family:var(--font-greek);font-size:42px;font-weight:700;color:var(--text-primary);text-align:center;line-height:1.3;margin-bottom:16px}.study-card-front .study-sentence-context{width:100%;text-align:center;margin-top:12px;padding-top:10px;border-top:1px solid var(--border-subtle)}.study-card-front .study-greek-sentence{font-family:var(--font-greek);font-size:15px;color:var(--text-primary);line-height:1.5}.study-card-front .study-highlighted-token{font-weight:700;text-decoration:underline;text-decoration-color:var(--accent);text-underline-offset:3px}.study-card-front .study-sentence-label{font-size:10px;color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px;font-weight:600;margin-bottom:4px}.study-card-front .study-hint{position:absolute;bottom:16px;font-size:12px;color:var(--text-muted);opacity:.5}.study-card-back{background:var(--bg-surface);border:1px solid var(--border-default);transform:rotateY(180deg);justify-content:flex-start;overflow-y:auto;padding:20px}.study-morph-section{width:100%}.study-morph-analysis{margin-top:6px;border:1px solid var(--border-subtle);border-radius:var(--radius-md);overflow:hidden;background:color-mix(in srgb,var(--bg-surface) 88%,var(--bg-secondary))}.study-card-back .study-morph-analysis .morph-word-display{padding:14px 14px 12px}.study-card-back .study-morph-analysis .morph-content{flex:none;overflow:visible;padding:10px 14px 14px}.study-card-back .study-morph-analysis .morph-word-form{font-size:26px}.study-card-back .study-morph-analysis .morph-char{font-size:20px}.study-card-back .study-morph-analysis .morph-char-legend{gap:8px}.study-card-back .study-morph-analysis .morph-feat{margin-bottom:6px}.study-sentence{width:100%;margin-top:12px;padding-top:10px;border-top:1px solid var(--border-subtle)}.study-sentence-label{font-size:10px;color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px;font-weight:600;margin-bottom:4px}.study-greek-sentence{font-family:var(--font-greek);font-size:15px;color:var(--text-primary);line-height:1.5;margin-bottom:6px}.study-highlighted-token{font-weight:700;text-decoration:underline;text-decoration-color:var(--accent);text-underline-offset:3px}.study-sent-id{font-size:10px;color:var(--text-muted);font-family:monospace;margin-bottom:8px}.study-translation-prose{font-size:14px;color:var(--text-primary);font-weight:500;margin-bottom:4px}.study-translation-literal{font-size:13px;color:var(--text-secondary);font-style:italic}.study-ratings-wrap{display:flex;flex-direction:column;align-items:center;gap:8px;width:100%;max-width:560px}.study-ratings{display:flex;gap:8px;width:100%;max-width:520px}.study-rating-btn{flex:1;padding:10px 8px 12px;border:2px solid var(--border-default);border-radius:var(--radius-md);background:var(--bg-surface);color:var(--text-primary);cursor:pointer;transition:all .12s ease;text-align:center;position:relative}.study-rating-btn .rating-kbd{display:block;font-family:var(--font-mono, monospace);font-size:13px;font-weight:700;margin-bottom:4px}.study-rating-btn .rating-label{font-size:14px;font-weight:700;display:block}.study-rating-btn .rating-interval{font-family:var(--font-mono, monospace);font-size:14px;font-weight:700;display:block;margin-top:2px;color:var(--text-primary)}.study-rating-btn .rating-desc{font-size:11px;color:var(--text-muted);display:block;margin-top:2px}.study-rating-btn:hover{transform:translateY(-2px)}.study-rating-btn.again{border-color:#f7768e}.study-rating-btn.again:hover{background:color-mix(in srgb,#f7768e 20%,var(--bg-surface))}.study-rating-btn.hard{border-color:#e0af68}.study-rating-btn.hard:hover{background:color-mix(in srgb,#e0af68 20%,var(--bg-surface))}.study-rating-btn.good{border-color:#9ece6a}.study-rating-btn.good:hover{background:color-mix(in srgb,#9ece6a 20%,var(--bg-surface))}.study-rating-btn.easy{border-color:#7dcfff}.study-rating-btn.easy:hover{background:color-mix(in srgb,#7dcfff 20%,var(--bg-surface))}.study-kbd-hint{font-size:12px;color:var(--text-muted)}.study-kbd-hint kbd{display:inline-block;padding:2px 5px;font-family:var(--font-mono, monospace);font-size:11px;background:var(--bg-tertiary);border:1px solid var(--border-default);border-radius:4px;color:var(--text-secondary);line-height:1.4}.study-done{text-align:center;padding:60px 24px}.study-done .done-icon{font-size:64px;margin-bottom:16px}.study-done h2{font-size:24px;color:var(--accent-success);margin-bottom:8px}.study-done p{color:var(--text-secondary);font-size:14px;margin-bottom:20px}.study-done-next-step{margin:24px auto 0;padding:18px;max-width:420px;border:1px solid color-mix(in srgb,var(--accent) 35%,var(--border-default));border-radius:var(--radius-lg);background:color-mix(in srgb,var(--accent) 8%,var(--bg-surface))}.study-done-next-label{font-size:11px;color:var(--text-muted);text-transform:uppercase;letter-spacing:.6px;font-weight:700}.study-done-next-title{margin-top:6px;font-size:18px;font-weight:700;color:var(--text-primary)}.study-done-next-detail{margin-top:6px;font-size:13px;color:var(--accent);font-family:var(--font-mono, monospace)}.study-done-next-copy{margin-top:10px;font-size:13px;line-height:1.5;color:var(--text-secondary)}.study-done-actions{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-top:16px}.study-done-btn{padding:10px 24px;background:var(--accent);color:var(--bg-primary);border:none;border-radius:var(--radius-md);font-size:14px;font-weight:600;cursor:pointer}.study-done-primary{margin-top:14px}.study-done-secondary{background:var(--bg-tertiary);color:var(--text-primary);border:1px solid var(--border-default)}.study-word .segment{transition:filter var(--t-fast);cursor:help}.study-word .segment:hover{filter:brightness(1.3)}#sentence-selector-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0009;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;z-index:1000}.sentence-selector-card{background:var(--bg-surface);border:1px solid var(--border-default);border-radius:var(--radius-lg);width:min(580px,calc(100vw - 40px));max-height:80vh;display:flex;flex-direction:column;box-shadow:0 20px 60px #0000004d}.sentence-selector-header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--border-subtle)}.sentence-selector-header h3{margin:0;font-size:15px;color:var(--text-primary)}.sentence-selector-hint{margin:6px 0 0;max-width:420px;font-size:12px;line-height:1.5;color:var(--text-muted)}.sentence-selector-hint strong{color:var(--accent)}#sentence-selector-close{background:none;border:none;color:var(--text-muted);font-size:24px;cursor:pointer;padding:0 4px;line-height:1}#sentence-selector-close:hover{color:var(--text-primary)}.sentence-selector-actions{display:flex;gap:6px;padding:10px 20px;border-bottom:1px solid var(--border-subtle)}.sel-action-btn{padding:5px 12px;font-size:12px;font-weight:600;background:var(--bg-tertiary);color:var(--text-secondary);border:1px solid var(--border-default);border-radius:var(--radius-sm);cursor:pointer;transition:all .12s ease}.sel-action-btn:hover{background:var(--bg-surface);color:var(--text-primary);border-color:var(--accent)}.sentence-selector-list{overflow-y:auto;flex:1;padding:8px}.sentence-selector-item{display:flex;align-items:flex-start;gap:10px;padding:8px 12px;border-radius:var(--radius-sm);cursor:pointer;transition:background .12s ease;-webkit-user-select:none;user-select:none}.sentence-selector-item:hover{background:var(--bg-tertiary)}.sentence-selector-item.selected{background:color-mix(in srgb,var(--accent) 8%,var(--bg-surface))}.sentence-check{font-size:16px;line-height:1.4;flex-shrink:0}.sentence-id{font-size:11px;font-family:monospace;color:var(--text-muted);padding:2px 6px;background:var(--bg-tertiary);border-radius:3px;flex-shrink:0;margin-top:1px}.sentence-preview{font-size:13px;color:var(--text-secondary);font-family:var(--font-greek);line-height:1.4}.sentence-selector-footer{padding:12px 20px;border-top:1px solid var(--border-subtle);display:flex;justify-content:flex-end}.sel-confirm-btn{padding:8px 20px;font-size:14px;font-weight:600;background:var(--accent);color:var(--bg-primary);border:none;border-radius:var(--radius-md);cursor:pointer;transition:opacity .12s ease}.sel-confirm-btn:hover{opacity:.85}