:root{--bg-primary: #ffffff;--bg-secondary: #f1f5f9;--accent: #7c3aed;--accent-hover: #6d28d9;--text-primary: #0f172a;--text-secondary: #64748b;--glass-bg: rgba(255, 255, 255, .7);--glass-border: rgba(0, 0, 0, .1);--word-hard: #9333ea;--word-important: #000000;--word-non-important: #cbd5e1}*,*:before,*:after{box-sizing:border-box}body{margin:0;font-family:Inter,system-ui,-apple-system,sans-serif;background:var(--bg-primary);color:var(--text-primary);min-height:100vh;-webkit-font-smoothing:antialiased}#root{width:100%;max-width:1400px;margin:0 auto;padding:1rem}.glass{background:var(--glass-bg);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid var(--glass-border);border-radius:12px;box-shadow:0 4px 6px -1px #0000001a,0 2px 4px -1px #0000000f}.btn{background:var(--accent);color:#fff;border:none;padding:.75rem 1.5rem;border-radius:8px;font-weight:600;cursor:pointer;transition:all .2s}.btn:hover{background:var(--accent-hover);transform:translateY(-1px);box-shadow:0 4px 12px #7c3aed4d}.input{background:#fff;border:1px solid #e2e8f0;color:var(--text-primary);padding:.75rem;border-radius:8px;width:100%;font-size:1rem;outline:none;transition:all .2s;box-shadow:0 1px 2px #0000000d}.input:focus{border-color:var(--accent);box-shadow:0 0 0 3px #7c3aed1a}.header-container{padding:1rem;margin-bottom:1rem;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:1rem}.header-controls{display:flex;gap:1rem;align-items:center}.legend-container{padding:1rem;margin-bottom:2rem;display:flex;gap:2rem;align-items:center;justify-content:center;flex-wrap:wrap}.main-layout{display:grid;grid-template-columns:320px 1fr 320px;grid-template-areas:"input output sidebar";gap:1.5rem;align-items:start;width:100%}.input-panel{grid-area:input;padding:1rem;height:fit-content;position:sticky;top:1rem}.content-panel{grid-area:output;padding:2rem;min-height:800px;background:#fff}.translation-panel{grid-area:sidebar;padding:1.5rem;height:fit-content;min-height:300px;position:sticky;top:1rem;background:#fff}.word{display:inline-block;white-space:pre-wrap;cursor:pointer;padding:0 2px;border-radius:4px;transition:background-color .2s;font-size:1.1em}.word:hover{background-color:#0000000d}.word-hard{color:var(--word-hard);font-weight:500}.word-hard-important{color:var(--word-hard);font-weight:800}.word-important{color:var(--word-important);font-weight:800}.word-low{color:#cbd5e1;font-weight:400;transition:color .1s ease}.word-fade-1{color:#94a3b8}.word-fade-2{color:#64748b}.word-fade-3{color:#475569}.word-low:hover,.word-fade-1:hover,.word-fade-2:hover{color:var(--text-primary)}.word-low:hover{color:#64748b}.close-btn{background:transparent;border:none;color:var(--text-secondary);cursor:pointer}.loader{border:3px solid #e2e8f0;border-radius:50%;border-top:3px solid var(--accent);width:24px;height:24px;animation:spin 1s linear infinite;display:inline-block}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@media(max-width:1200px){.main-layout{grid-template-columns:1fr 320px;grid-template-areas:"input input" "output sidebar"}.input-panel{position:static;margin-bottom:1rem}}@media(max-width:850px){.main-layout{display:flex;flex-direction:column;grid-template-areas:none;gap:1rem}#root{padding:.5rem}.header-container{flex-direction:column;align-items:flex-start}.header-controls{width:100%;flex-direction:column;align-items:stretch}.header-controls input,.header-controls select{width:100%!important}.legend-container{gap:1rem;justify-content:flex-start}.input-panel,.content-panel,.translation-panel{width:100%;position:static}.translation-panel{order:3}.content-panel{min-height:300px;padding:1rem}}.flashcard-container{perspective:1000px;width:100%;height:180px;cursor:pointer;margin-bottom:1rem}.flashcard-inner{position:relative;width:100%;height:100%;text-align:center;transition:transform .6s cubic-bezier(.4,0,.2,1);transform-style:preserve-3d}.flashcard-container.is-flipped .flashcard-inner{transform:rotateY(180deg)}.flashcard-front,.flashcard-back{position:absolute;width:100%;height:100%;-webkit-backface-visibility:hidden;backface-visibility:hidden;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:1rem;border-radius:12px;box-shadow:0 4px 6px -1px #0000001a;border:1px solid var(--glass-border)}.flashcard-front{background-color:#fff}.flashcard-back{background-color:#f8fafc;transform:rotateY(180deg);border:2px solid var(--accent)}.flashcard-word{font-size:1.5rem;font-weight:700;color:var(--accent);margin-bottom:.5rem}.flashcard-translation{font-size:1.8rem;font-weight:700;color:var(--text-primary);direction:rtl}.flashcard-hint{font-size:.75rem;color:var(--text-secondary);margin-top:1rem;text-transform:uppercase;letter-spacing:.05em}.flashcard-meta{font-size:.7rem;color:var(--text-secondary);margin-top:.5rem}