*{box-sizing:border-box;margin:0;padding:0}:root{--bg-app:#0f1629;--bg-header:#0f1629;--bg-graph:#0a101e;--bg-surface:#151e32;--bg-surface-hover:#1a253d;--border-subtle:#2a344a;--border-medium:#2a344a;--text-primary:#f9fafb;--text-secondary:#d1d5db;--text-tertiary:#9ca3af;--text-muted:#6b7280;--text-mid:#d1d5db;--accent:#f90;--accent-hover:#e68a00;--accent-bg:#ff99001a;--visitor-bg:#ff99001a;--visitor-border:#ff99004d;--visitor-text:#f90;--error:#ef4444;--link:#f90;--btn-login:#f90;--scrollbar-thumb:#ffffff14;--scrollbar-hover:#ffffff26}[data-theme=light]{--bg-app:#f6f8fa;--bg-header:linear-gradient(180deg, #f6f8fa, #eef2f6);--bg-graph:#fff;--bg-surface:#fff;--bg-surface-hover:#f3f4f6;--border-subtle:#1f232814;--border-medium:#1f232824;--text-primary:#1f2328;--text-secondary:#57606a;--text-tertiary:#6e7781;--text-muted:#8c959f;--text-mid:#24292f;--accent:#0969da;--accent-hover:#0550ae;--accent-bg:#0969da1a;--visitor-bg:#1a7f3714;--visitor-border:#1a7f3733;--visitor-text:#1a7f37;--error:#cf222e;--link:#0969da;--btn-login:#1f883d;--scrollbar-thumb:#1f232824;--scrollbar-hover:#1f232838}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.loading-icon{margin-right:6px;animation:1s linear infinite spin;display:inline-block}body{background:var(--bg-app);color:var(--text-primary);font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Helvetica,Arial,sans-serif,Apple Color Emoji,Segoe UI Emoji;overflow:auto}.app{background:var(--bg-app);flex-direction:column;width:100vw;min-height:100vh;padding-top:5rem;display:flex}.header{background:var(--bg-header);border-bottom:1px solid var(--border-subtle);justify-content:space-between;align-items:center;padding:16px 28px;display:flex}.header-additional{background:var(--bg-header);border-bottom:1px solid var(--border-subtle);justify-content:flex-end;align-items:center;padding:16px 28px;display:flex}.header-additional .header-left,.header-additional .lang-selector{display:none}.header-left h1{color:var(--accent);letter-spacing:3px;margin-bottom:4px;font-size:14px;font-weight:500}.header-left p{color:var(--text-primary);font-size:22px;font-weight:600}.header-right{align-items:center;gap:16px;display:flex}.visitor-count{background:var(--visitor-bg);border:1px solid var(--visitor-border);color:var(--visitor-text);border-radius:6px;padding:4px 12px;font-size:12px;font-weight:500}.badge{color:var(--error);background:#ef444426;border:1px solid #ef444466;border-radius:6px;padding:4px 12px;font-size:12px;font-weight:600}.streak{color:var(--text-secondary);font-size:13px}.lang-selector{gap:4px;display:flex}.lang-btn{color:var(--text-secondary);cursor:pointer;background:#ffffff0d;border:1px solid #fff3;border-radius:4px;padding:4px 10px;font-size:10px;font-weight:600;transition:all .2s}.lang-btn:hover{color:var(--text-mid);border-color:#ffffff4d}.lang-btn.active{border-color:var(--accent);color:var(--accent);background:#f59e0b26}.tabs{border-bottom:1px solid var(--border-subtle);background:var(--bg-surface);gap:0;padding:0 28px;display:flex}.tab{cursor:pointer;color:var(--text-tertiary);background:0 0;border:none;border-bottom:2px solid #0000;padding:14px 20px;font-size:14px;font-weight:500;transition:all .2s}.tab:hover{color:var(--text-secondary)}.tab.active{color:var(--accent);border-bottom-color:var(--accent)}.main-area{flex:1;display:flex;overflow:hidden}.controls-panel{border-right:1px solid var(--border-subtle);flex-direction:column;gap:16px;padding:20px;display:flex;overflow-y:auto}.filter-section{flex-wrap:wrap;gap:8px;display:flex}.filter-pill{border:1px solid var(--border-medium);color:var(--text-secondary);cursor:pointer;background:#ffffff08;border-radius:16px;align-items:center;gap:6px;padding:6px 12px;font-size:12px;transition:all .2s;display:flex}.filter-pill:hover{background:var(--border-subtle)}.filter-pill.active{color:#fff;background:#ffffff1a;border-color:#ffffff4d}.filter-dot{border-radius:50%;flex-shrink:0;width:8px;height:8px}.slots-section{background:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:12px;padding:16px}.slots-header{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px;margin-bottom:12px;display:flex}.slots-title{color:var(--text-primary);font-size:14px;font-weight:600}.difficulty-buttons{gap:6px;display:flex}.diff-btn{border:1px solid var(--border-medium);color:var(--text-secondary);cursor:pointer;background:#ffffff08;border-radius:6px;padding:4px 10px;font-size:11px;transition:all .2s}.diff-btn:hover{background:var(--border-subtle)}.diff-btn.active{background:var(--accent);color:var(--bg-app);border-color:var(--accent)}.diff-btn.reset{color:var(--error);border-color:#ef44444d}.diff-btn.reset:hover{background:#ef44441a}.slots-grid{grid-template-columns:repeat(4,1fr);gap:10px;margin-bottom:14px;display:grid}.slot-card{border:2px dashed var(--border-medium);background:var(--bg-surface);cursor:pointer;border-radius:10px;flex-direction:column;justify-content:center;align-items:center;gap:6px;min-height:100px;padding:16px 8px;transition:all 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.2s}.generate-btn:hover:not(:disabled){background:var(--accent-hover);transform:translateY(-1px);box-shadow:0 6px 20px #f59e0b4d}.generate-btn:disabled{opacity:.4;cursor:not-allowed}.concept-panel{flex:1;overflow-y:auto}.concept-header{text-align:center;border-bottom:1px solid var(--border-subtle);margin-bottom:20px;padding-bottom:16px}.concept-emoji{margin-bottom:8px;font-size:48px;display:block}.concept-header h2{color:var(--accent);margin-bottom:4px;font-size:22px}.concept-subtitle{color:var(--text-tertiary);font-size:13px}.concept-section{border-bottom:1px solid #ffffff0f;margin-bottom:20px;padding-bottom:16px}.concept-section h3{color:var(--accent);margin-bottom:10px;font-size:14px;font-weight:600}.easy-text{color:var(--text-mid);font-size:13px;line-height:1.7}.point-card{background:#ffffff08;border:1px solid #ffffff0f;border-radius:8px;margin-bottom:10px;padding:12px}.point-card h4{color:var(--accent);margin-bottom:6px;font-size:12px;font-weight:600}.point-text{color:var(--text-mid);margin-bottom:6px;font-size:12px;line-height:1.5}.point-easy{color:var(--text-tertiary);font-size:11px;font-style:italic;line-height:1.4}.related-grid{flex-wrap:wrap;gap:6px;display:flex}.related-btn{color:var(--accent);cursor:pointer;background:#f59e0b0d;border:1px solid #f59e0b4d;border-radius:6px;padding:4px 10px;font-size:11px;transition:all .2s}.related-btn:hover{background:#f59e0b26}.empty-state{color:#334155;text-align:center;justify-content:center;align-items:center;min-height:300px;font-size:14px;line-height:1.6;display:flex}.status-panel{flex:1}.graph-panel{flex-direction:column;flex:1;min-width:0;display:flex}.graph-label{color:var(--text-primary);border-bottom:1px solid #ffffff0f;padding:12px 20px;font-size:14px;font-weight:600}.graph-box{background:var(--bg-graph);flex:1;overflow:hidden}select{background-color:#f903!important}select:hover{background-color:#ff99004d!important}select option{color:var(--text-mid);background:#f903}select option:checked{color:#fff;background:#f903}select option:hover{color:#fff;background:#ff99004d}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:var(--border-subtle);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--border-medium)}@media (width<=900px){.main-area{flex-direction:column}.controls-panel{border-right:none;border-bottom:1px solid var(--border-subtle);max-height:50vh}.graph-panel{min-height:300px}.slots-grid{grid-template-columns:repeat(2,1fr)}}@media (width<=768px){.app{overflow-y:auto}.header{flex-wrap:wrap;gap:12px;padding:12px 16px}.header-additional{flex-wrap:wrap;gap:8px;padding:12px 16px}.header-left h1{letter-spacing:2px;font-size:11px}.header-left p{font-size:16px}.header-right{flex-wrap:wrap;justify-content:space-between;gap:8px;width:100%}.visitor-count,.badge,.streak{padding:3px 8px;font-size:11px}.lang-selector{gap:2px}.lang-btn{padding:3px 8px;font-size:9px}.tabs{gap:4px;padding:0 12px;overflow-x:auto}.tab{white-space:nowrap;flex-shrink:0;padding:10px 12px;font-size:12px}.main-area{flex-direction:column;overflow-y:auto}.controls-panel{border-right:none;border-bottom:1px solid var(--border-subtle);gap:12px;max-height:none;padding:12px}.filter-section{gap:6px}.filter-pill{padding:5px 10px;font-size:11px}.slots-section{padding:12px}.slots-header{flex-direction:column;align-items:flex-start;gap:8px}.slots-title{font-size:13px}.difficulty-buttons{gap:4px;width:100%}.diff-btn{flex:1;min-width:0;padding:3px 8px;font-size:10px}.slots-grid{grid-template-columns:repeat(2,1fr);gap:8px}.slot-card{min-height:80px;padding:12px 6px}.slot-emoji{font-size:24px}.slot-name{font-size:11px}.generate-btn{padding:10px 16px;font-size:13px}.graph-panel{min-height:250px}.graph-label{padding:10px 15px;font-size:13px}}@media (width<=480px){.app{padding-top:4rem}.header{gap:8px;padding:10px 12px}.header-additional{gap:6px;padding:10px 12px}.header-left h1{letter-spacing:1px;font-size:10px}.header-left p{font-size:14px}.header-right{gap:6px;width:100%}.visitor-count,.badge,.streak{padding:2px 6px;font-size:10px}.lang-btn{padding:2px 6px;font-size:8px}.tabs{gap:0;padding:0 8px;overflow-x:auto}.tab{white-space:nowrap;padding:8px 10px;font-size:11px}.controls-panel{gap:8px;padding:8px}.filter-pill{gap:4px;padding:4px 8px;font-size:10px}.slots-section{padding:8px}.slots-header{flex-direction:column;gap:6px}.slots-title{font-size:12px}.difficulty-buttons{gap:3px;width:100%}.diff-btn{flex:1;padding:2px 6px;font-size:9px}.slots-grid{grid-template-columns:repeat(2,1fr);gap:6px}.slot-card{gap:4px;min-height:70px;padding:10px 4px}.slot-emoji{font-size:20px}.slot-name{font-size:10px}.slot-cat{font-size:9px}.generate-btn{padding:8px 12px;font-size:12px}.graph-panel{min-height:200px}.graph-label{padding:8px 10px;font-size:11px}.concept-emoji{font-size:32px}.concept-header h2{font-size:16px}.concept-subtitle{font-size:12px}.point-card{margin-bottom:8px;padding:8px}.point-card h4,.point-text{font-size:11px}.point-easy{font-size:10px}.empty-state{min-height:200px;font-size:12px}}