:root{--bg: #f6f1e6;--surface: #fffdf8;--ink: #2c271f;--muted: #9a9082;--accent: #bf6b3f;--accent-soft: #f0e3d4;--line: #e6dcc9;--radius: 12px}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:ui-sans-serif,-apple-system,Segoe UI,Roboto,sans-serif;line-height:1.55;-webkit-font-smoothing:antialiased}.app{max-width:600px;margin:0 auto;padding:3rem 1.25rem 5rem}.masthead h1{font-family:Iowan Old Style,Palatino,Book Antiqua,Georgia,serif;font-size:1.5rem;font-weight:600;letter-spacing:.02em;margin:0 0 1.25rem}.tabs{display:flex;gap:1.25rem;margin-bottom:2rem}.tabs button{position:relative;background:none;border:none;padding:.25rem 0;font-size:.92rem;color:var(--muted);cursor:pointer;transition:color .2s ease}.tabs button:hover,.tabs button.active{color:var(--ink)}.tabs button.active:after{content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;background:var(--accent);border-radius:2px;animation:underline .25s ease}@keyframes underline{0%{transform:scaleX(0)}to{transform:scaleX(1)}}.view{display:flex;flex-direction:column;gap:1.5rem;animation:fade-up .35s ease both}@keyframes fade-up{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.card-stage{perspective:1400px}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:2rem 1.75rem;box-shadow:0 1px 2px #3c321e0a}.card.enter{animation:fade-up .3s ease both}.card.flip{animation:page-flip 1.5s cubic-bezier(.4,0,.2,1) both;transform-origin:left center;backface-visibility:hidden;will-change:transform}@keyframes page-flip{0%{transform:rotateY(108deg);opacity:0;box-shadow:-18px 10px 28px #3c321e33}60%{transform:rotateY(-9deg);opacity:1;box-shadow:-7px 7px 18px #3c321e1f}80%{transform:rotateY(4deg);box-shadow:-3px 4px 10px #3c321e12}to{transform:rotateY(0);box-shadow:0 1px 2px #3c321e0a}}.card-head{display:flex;align-items:flex-start;justify-content:space-between;gap:1rem}.word{font-family:Iowan Old Style,Palatino,Book Antiqua,Georgia,serif;font-size:2.4rem;font-weight:600;margin:0;line-height:1.1}.star{background:none;border:none;cursor:pointer;font-size:1.4rem;color:var(--accent);line-height:1;transition:transform .15s ease}.star:hover{transform:scale(1.15)}.star.on{animation:pop .3s ease}@keyframes pop{0%{transform:scale(.7)}60%{transform:scale(1.25)}to{transform:scale(1)}}.phonetic{color:var(--muted);margin:.4rem 0 0;font-size:.95rem}.pos{color:var(--accent);font-style:italic;margin:.6rem 0 0;font-size:.88rem}.definition{margin:.85rem 0 0}.example{color:var(--muted);margin:.75rem 0 0;font-style:italic}.muted{color:var(--muted)}.actions{display:flex;gap:.6rem;margin-top:1.75rem}.actions button{flex:1;padding:.6rem .75rem;border-radius:9px;border:1px solid var(--line);background:var(--surface);color:var(--ink);cursor:pointer;font-size:.9rem;transition:transform .12s ease,background .2s ease,border-color .2s ease}.actions button:hover:not(:disabled){transform:translateY(-1px);border-color:var(--accent)}.actions button.primary{background:var(--accent);border-color:var(--accent);color:#fff}.actions button.primary:hover:not(:disabled){background:#a85a32}.actions button:disabled{opacity:.45;cursor:default}.toast{position:fixed;left:50%;bottom:2rem;transform:translate(-50%);background:var(--ink);color:var(--bg);padding:.5rem 1rem;border-radius:999px;font-size:.85rem;animation:toast 1s ease both;pointer-events:none}@keyframes toast{0%{opacity:0;transform:translate(-50%,10px)}15%,75%{opacity:1;transform:translate(-50%)}to{opacity:0;transform:translate(-50%,-6px)}}.search{display:flex;gap:.5rem}.search input{flex:1;padding:.6rem .85rem;border-radius:9px;border:1px solid var(--line);background:var(--surface);color:var(--ink);font-size:.95rem}.search input:focus{outline:none;border-color:var(--accent)}.search button{padding:0 1.1rem;border-radius:9px;border:1px solid var(--accent);background:var(--accent);color:#fff;cursor:pointer}.date-label{color:var(--muted);font-size:.8rem;margin:0 0 .4rem;letter-spacing:.03em}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important}}