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.es-icon{background:var(--accent-soft);color:var(--accent);width:60px;height:60px;border-radius:18px}.entity-card{position:relative;overflow:hidden}.entity-card:before{content:"";position:absolute;inset:0 0 auto;height:3px;background:var(--accent);opacity:0;transition:opacity .16s}.entity-card:hover:before{opacity:1}:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}.card.entity-card:hover{border-color:color-mix(in srgb,var(--accent) 40%,var(--border))}.stat-card .stat-icon{background:var(--accent-soft);color:var(--accent)}.stat-card:hover{box-shadow:var(--shadow);transform:translateY(-2px);transition:transform .16s ease,box-shadow .16s ease}.nav-brand .logo{box-shadow:var(--shadow-accent)}.panel{transition:box-shadow .16s ease}.segmented button.active,.tabs button.active{font-weight:700}.badge{font-weight:600;letter-spacing:.01em}.page-heading h1{background:none}*{scrollbar-width:thin;scrollbar-color:var(--border-strong) transparent}*::-webkit-scrollbar{width:10px;height:10px}*::-webkit-scrollbar-thumb{background:var(--border-strong);border-radius:999px;border:2px solid transparent;background-clip:content-box}*::-webkit-scrollbar-thumb:hover{background:var(--text-muted);background-clip:content-box}.search-box{border-radius:var(--radius-pill)}.app-shell{background:var(--bg)}.stat-card .stat-value,.score-number span,.score-summary span,.nav-brand h1{font-family:var(--font);font-weight:800;letter-spacing:-.02em}.select{appearance:none;-webkit-appearance:none;-moz-appearance:none;background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%238a877c' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'><polyline points='6 9 12 15 18 9'/></svg>");background-repeat:no-repeat;background-position:right 12px center;background-size:16px;padding-right:40px;cursor:pointer}.select:hover{border-color:var(--border-strong)}.select:focus{background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23c96442' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'><polyline points='6 9 12 15 18 9'/></svg>")}.select option{color:var(--text);background:var(--surface)}.lang-toggle{display:inline-flex;background:var(--bg-soft);border-radius:999px;padding:2px}.lang-toggle button{border:none;background:transparent;padding:3px 12px;border-radius:999px;font-size:12px;font-weight:600;color:var(--text-muted);cursor:pointer;transition:background .12s,color .12s}.lang-toggle button.active{background:var(--surface);color:var(--accent-strong);box-shadow:var(--shadow-sm)}.upload-zone{display:flex;flex-direction:column;align-items:center;gap:4px;padding:26px 18px;text-align:center;cursor:pointer;border:1.5px dashed var(--border-strong);border-radius:var(--radius);background:var(--surface-2);transition:border-color .15s,background .15s}.upload-zone:hover{border-color:var(--accent);background:var(--accent-soft)}.upload-zone svg{color:var(--accent)}.upload-zone span{font-weight:600;font-size:14px;margin-top:4px}.upload-zone small{color:var(--text-muted);font-size:12px}.flashcard{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:40px 20px;background:var(--surface-2);border:1px dashed var(--border-strong);border-radius:var(--radius)}.rate-row{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.rate-btn{display:flex;flex-direction:column;align-items:center;gap:2px;padding:12px 8px;border-radius:var(--radius-sm);border:1px solid var(--border-strong);background:var(--surface);cursor:pointer;transition:transform .14s,box-shadow .14s,border-color .14s,color .14s}.rate-btn span{font-weight:700;font-size:14px}.rate-btn small{color:var(--text-muted);font-size:11px}.rate-btn:hover{transform:translateY(-2px);box-shadow:var(--shadow-sm)}.rate-btn:disabled{opacity:.55;cursor:not-allowed}.rate-btn.again:hover{border-color:var(--danger);color:var(--danger)}.rate-btn.hard:hover{border-color:var(--warning);color:var(--warning)}.rate-btn.good:hover{border-color:var(--accent);color:var(--accent)}.rate-btn.easy:hover{border-color:var(--success);color:var(--success)}.mcq-options{display:flex;flex-direction:column;gap:10px}.mcq-option{display:flex;align-items:center;gap:12px;width:100%;text-align:left;padding:13px 15px;border-radius:var(--radius-sm);border:1px solid var(--border-strong);background:var(--surface);cursor:pointer;font-size:14px;transition:border-color .14s,background .14s,opacity .14s}.mcq-option:hover:not(:disabled){border-color:var(--accent);background:var(--accent-soft)}.mcq-option:disabled{cursor:default}.mcq-letter{width:26px;height:26px;border-radius:50%;background:var(--bg-soft);display:grid;place-items:center;font-weight:700;font-size:13px;flex-shrink:0}.mcq-option.correct{border-color:var(--success);background:var(--success-soft)}.mcq-option.correct .mcq-letter{background:var(--success);color:#fff}.mcq-option.correct svg{color:var(--success)}.mcq-option.wrong{border-color:var(--danger);background:var(--danger-soft)}.mcq-option.wrong .mcq-letter{background:var(--danger);color:#fff}.mcq-option.wrong svg{color:var(--danger)}.mcq-option.dim{opacity:.5}.select-wrap{position:relative;width:100%}.select-trigger{display:flex;align-items:center;justify-content:space-between;gap:8px;width:100%;padding:10px 13px;font-size:14px;border:1px solid var(--border-strong);border-radius:var(--radius-sm);background:var(--surface);color:var(--text);cursor:pointer;text-align:left;transition:border .15s,box-shadow .15s}.select-trigger:hover{border-color:var(--accent)}.select-trigger.open{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}.select-trigger:disabled{opacity:.55;cursor:not-allowed}.select-trigger .ph{color:var(--text-muted)}.select-trigger .select-chev{color:var(--text-muted);flex-shrink:0;transition:transform .18s ease,color .15s}.select-trigger.open .select-chev{transform:rotate(180deg);color:var(--accent)}.select-menu{position:absolute;top:calc(100% + 6px);left:0;right:0;z-index:70;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);box-shadow:var(--shadow-lg);padding:6px;max-height:280px;overflow-y:auto;animation:select-in .14s ease}@keyframes select-in{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}.select-option{display:flex;align-items:center;justify-content:space-between;gap:8px;width:100%;padding:9px 11px;font-size:14px;text-align:left;border:none;background:transparent;color:var(--text);border-radius:7px;cursor:pointer;transition:background .12s}.select-option:hover{background:var(--bg-soft)}.select-option.selected{background:var(--accent-soft);color:var(--accent-strong);font-weight:600}.select-option svg{color:var(--accent);flex-shrink:0}.select-wrap.sm .select-trigger{padding:6px 10px;font-size:13px}.btn{font-weight:600}.btn.secondary:hover{background:var(--accent-soft)}.btn.ghost:hover{background:var(--accent-soft);color:var(--accent-strong)}.tag{border-radius:6px}.btn.tonal{background:var(--accent-soft);color:var(--accent-strong);box-shadow:none}.btn.tonal:hover{background:#f0ddd2}