:root{--bg-gradient:linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);--card-bg:#ffffff0d;--card-border:#ffffff1a;--text-primary:#fff;--text-secondary:#a0a0b0;--accent:#e94560;--accent-hover:#c73a54;--success:#0ead69;--shadow:0 8px 32px #0000004d}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg-gradient);min-height:100vh;color:var(--text-primary);font-family:Noto Sans JP,Hiragino Sans,sans-serif;overflow-x:hidden}.container{flex-direction:column;max-width:800px;min-height:100vh;margin:0 auto;padding:2rem 1.5rem;display:flex}header{text-align:center;margin-bottom:2.5rem}header h1{background:linear-gradient(90deg,#fff,#e94560,#fff) 0 0/200%;-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;margin-bottom:.5rem;font-size:2rem;font-weight:700;animation:3s linear infinite shimmer}@keyframes shimmer{to{background-position:200%}}.subtitle{color:var(--text-secondary);font-size:.95rem}.roulette-container{justify-content:center;margin-bottom:2rem;display:flex}.card{background:var(--card-bg);border:1px solid var(--card-border);text-align:center;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-radius:24px;width:100%;max-width:500px;padding:2.5rem 2rem;transition:all .3s;position:relative;overflow:hidden}.card:before{content:"";background:linear-gradient(45deg, transparent, var(--accent), transparent);-webkit-mask-composite:xor;opacity:0;border-radius:24px;padding:2px;transition:opacity .3s;position:absolute;inset:0;-webkit-mask-image:linear-gradient(#fff 0 0),linear-gradient(#fff 0 0);mask-image:linear-gradient(#fff 0 0),linear-gradient(#fff 0 0);-webkit-mask-position:0 0,0 0;mask-position:0 0,0 0;-webkit-mask-size:auto,auto;mask-size:auto,auto;-webkit-mask-repeat:repeat,repeat;mask-repeat:repeat,repeat;-webkit-mask-clip:content-box,border-box;mask-clip:content-box,border-box;-webkit-mask-origin:content-box,border-box;mask-origin:content-box,border-box;-webkit-mask-composite:xor;mask-composite:exclude;-webkit-mask-source-type:auto,auto;mask-mode:match-source,match-source}.card.spinning:before{opacity:1;animation:1.5s ease-in-out infinite border-glow}@keyframes border-glow{0%,to{opacity:.3}50%{opacity:1}}.card.spinning .topic-text{filter:blur(1px);animation:.5s ease-in-out infinite shake}@keyframes shake{0%,to{transform:translate(0)}25%{transform:translate(-3px)}75%{transform:translate(3px)}}.category-badge{background:var(--accent);color:#fff;letter-spacing:.05em;border-radius:100px;margin-bottom:1rem;padding:.35rem 1rem;font-size:.75rem;font-weight:600;display:inline-block}.topic-text{justify-content:center;align-items:center;min-height:4rem;font-size:1.5rem;font-weight:700;line-height:1.6;display:flex}.tags{flex-wrap:wrap;justify-content:center;gap:.5rem;margin-top:1.5rem;display:flex}.tag{color:var(--text-secondary);background:#ffffff1a;border-radius:100px;padding:.25rem .75rem;font-size:.8rem}.controls{flex-wrap:wrap;justify-content:center;gap:1rem;margin-bottom:2.5rem;display:flex}.spin-btn{cursor:pointer;background:linear-gradient(135deg, var(--accent), var(--accent-hover));color:#fff;border:none;border-radius:100px;align-items:center;gap:.5rem;padding:1rem 2.5rem;font-size:1.1rem;font-weight:700;transition:all .2s;display:flex;box-shadow:0 4px 20px #e9456066}.spin-btn:hover{transform:translateY(-2px);box-shadow:0 6px 30px #e9456099}.spin-btn:active{transform:translateY(0)}.spin-btn:disabled{opacity:.6;cursor:not-allowed;transform:none}.reset-btn{border:1px solid var(--card-border);cursor:pointer;color:var(--text-secondary);background:0 0;border-radius:100px;padding:1rem 1.5rem;font-size:1rem;transition:all .2s}.reset-btn:hover{color:var(--text-primary);background:#ffffff0d}.history-section{flex:1}.history-section h2{color:var(--text-secondary);margin-bottom:1rem;font-size:1.1rem;font-weight:600}.history-list{flex-direction:column;gap:.75rem;display:flex}.history-item{background:var(--card-bg);border:1px solid var(--card-border);border-radius:12px;align-items:center;gap:1rem;padding:1rem 1.25rem;animation:.3s slide-in;display:flex}@keyframes slide-in{0%{opacity:0;transform:translateY(-10px)}}.history-item .icon{flex-shrink:0;font-size:1.5rem}.history-item .content{flex:1}.history-item .topic{margin-bottom:.25rem;font-weight:600}.history-item .category{color:var(--text-secondary);font-size:.8rem}.empty{text-align:center;color:var(--text-secondary);padding:2rem;font-style:italic}footer{text-align:center;border-top:1px solid var(--card-border);color:var(--text-secondary);margin-top:2rem;padding-top:2rem;font-size:.85rem}footer a{color:var(--accent);text-decoration:none}footer a:hover{text-decoration:underline}@media (width<=480px){.container{padding:1.5rem 1rem}header h1{font-size:1.5rem}.card{padding:1.75rem 1.25rem}.topic-text{min-height:3rem;font-size:1.2rem}.controls{gap:.75rem}.spin-btn{justify-content:center;width:100%;padding:.875rem 2rem;font-size:1rem}.reset-btn{flex:1;padding:.875rem 1.25rem}}