:root{--bg: #0f172a;--bg2: #1e293b;--card: #1e293b;--card2: #273449;--accent: #6366f1;--accent2: #8b5cf6;--amber: #f59e0b;--green: #22c55e;--text: #e2e8f0;--muted: #94a3b8;--border: #334155;--nav-h: 64px;--topbar-h: 44px;--nav-bg: rgba(15,23,42,.92);--toast-bg: #0b1220;--face-front: linear-gradient(160deg, #273449, #1e293b);--face-back: linear-gradient(160deg, #312e5f, #241f45)}:root[data-theme=light]{--bg: #f5f7fb;--bg2: #ffffff;--card: #ffffff;--card2: #eef2f7;--accent: #6366f1;--accent2: #8b5cf6;--amber: #f59e0b;--green: #16a34a;--text: #0f172a;--muted: #64748b;--border: #dbe2ec;--nav-bg: rgba(255,255,255,.92);--toast-bg: #ffffff;--face-front: linear-gradient(160deg, #eef2ff, #ffffff);--face-back: linear-gradient(160deg, #f3e8ff, #ffffff)}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body,#root{height:100%}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe 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var(--border)}.word-main{flex:1;min-width:0}.word-en{font-size:17px;font-weight:600;display:flex;align-items:center;gap:8px}.word-learned{color:#4ade80;font-size:14px}.word-ru{font-size:15px;color:var(--muted);margin-top:2px}.word-speak{flex-shrink:0;width:42px;height:42px;border-radius:12px;border:1px solid var(--border);background:#6366f11f;font-size:18px;cursor:pointer}.word-speak:active{transform:scale(.94)}.overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:var(--bg);z-index:100;display:flex;flex-direction:column;padding-top:env(safe-area-inset-top)}.overlay-head{display:flex;align-items:center;justify-content:space-between;padding:12px 14px;border-bottom:1px solid var(--border)}.close-btn{width:40px;height:40px;border-radius:10px;border:1px solid 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