:root{--bg-deep: #0d0d12;--bg-dark: #151520;--bg-card: #1a1a28;--bg-elevated: #222235;--sakura-100: #ffeef5;--sakura-200: #ffd1e3;--sakura-300: #ffadd0;--sakura-400: #ff85b8;--sakura-500: #ff5c9d;--gold-100: #fff8e7;--gold-300: #ffd666;--gold-500: #d4a853;--gold-700: #a67c3d;--ink: #e8e4f0;--ink-muted: #9590a8;--ink-faint: #5a5670;--tile-face: linear-gradient(165deg, #faf8f5 0%, #f0ebe3 50%, #e8e0d5 100%);--tile-back: linear-gradient(165deg, #2a2845 0%, #1f1d35 100%);--tile-border: #c9b896;--tile-shadow: rgba(0, 0, 0, .5);--glow-sakura: 0 0 30px rgba(255, 92, 157, .3);--glow-gold: 0 0 20px rgba(212, 168, 83, .4);--ease-spring: cubic-bezier(.34, 1.56, .64, 1);--ease-smooth: cubic-bezier(.4, 0, .2, 1)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;scroll-behavior:smooth}body{font-family:Zen Maru Gothic,Hiragino Kaku Gothic ProN,Meiryo,sans-serif;background:var(--bg-deep);color:var(--ink);min-height:100vh;overflow-x:hidden;position:relative}body:before{content:"";position:fixed;top:0;right:0;bottom:0;left:0;background:radial-gradient(ellipse 80% 50% at 50% 0%,rgba(255,92,157,.08) 0%,transparent 50%),radial-gradient(ellipse 60% 40% at 80% 100%,rgba(212,168,83,.06) 0%,transparent 40%),radial-gradient(ellipse 50% 30% at 10% 80%,rgba(138,120,200,.05) 0%,transparent 40%);pointer-events:none;z-index:0}body:after{content:"";position:fixed;top:0;right:0;bottom:0;left:0;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");opacity:.03;pointer-events:none;z-index:0}.particles{position:fixed;top:0;right:0;bottom:0;left:0;pointer-events:none;z-index:1;overflow:hidden}.petal{position:absolute;top:-20px;width:12px;height:12px;background:radial-gradient(ellipse at 30% 30%,var(--sakura-200) 0%,var(--sakura-400) 100%);border-radius:50% 0 50% 50%;opacity:.6;animation:petal-fall linear infinite;filter:blur(.5px)}.petal:nth-child(odd){width:8px;height:8px;opacity:.4}@keyframes petal-fall{0%{transform:translateY(-20px) rotate(0) translate(0);opacity:0}10%{opacity:.6}90%{opacity:.6}to{transform:translateY(100vh) rotate(720deg) translate(100px);opacity:0}}#app{position:relative;z-index:2;max-width:960px;margin:0 auto;padding:24px 20px;min-height:100vh;display:flex;flex-direction:column}.header{text-align:center;margin-bottom:32px;animation:fade-in .8s var(--ease-smooth) both}.logo{display:inline-flex;flex-direction:column;align-items:center;gap:4px}.logo-icon{font-family:Shippori Mincho,serif;font-size:2.5rem;font-weight:700;color:var(--gold-500);text-shadow:0 0 30px rgba(212,168,83,.5);animation:float 4s ease-in-out infinite}.logo h1{font-family:Shippori Mincho,serif;font-size:2.2rem;font-weight:700;color:var(--ink);letter-spacing:.3em;text-indent:.3em}.logo-sub{font-family:Shippori Mincho,serif;font-size:.9rem;color:var(--sakura-400);letter-spacing:.5em;text-indent:.5em;opacity:.9}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-6px)}}@keyframes fade-in{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.game-container{flex:1;display:flex;flex-direction:column;gap:20px}.game-area{background:var(--bg-card);border:1px solid rgba(255,255,255,.05);border-radius:24px;padding:24px;box-shadow:0 4px 24px #0006,inset 0 1px #ffffff08;animation:fade-in .8s var(--ease-smooth) .2s both}.player-section{display:flex;flex-direction:column;gap:12px}.player-section.opponent{padding-bottom:16px;border-bottom:1px solid rgba(255,255,255,.05)}.player-section.player{padding-top:16px;border-top:1px solid rgba(255,255,255,.05)}.player-info{display:flex;align-items:center;gap:12px}.player-section.player .player-info{justify-content:flex-end;flex-direction:row-reverse}.avatar{width:36px;height:36px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-family:Shippori Mincho,serif;font-size:.85rem;font-weight:700}.opponent-avatar{background:linear-gradient(135deg,#3d3a5c,#2a2845);color:var(--ink-muted);border:1px solid rgba(255,255,255,.1)}.player-avatar{background:linear-gradient(135deg,var(--sakura-500) 0%,#d44a80 100%);color:#fff;box-shadow:var(--glow-sakura)}.player-name{font-size:.9rem;font-weight:700;color:var(--ink-muted);letter-spacing:.1em}.hand{display:flex;justify-content:center;gap:6px;flex-wrap:wrap;min-height:80px;padding:8px 0}.hand-wrapper{display:flex;align-items:center;justify-content:center;gap:16px}.drawn-separator{width:2px;height:60px;background:linear-gradient(to bottom,transparent,var(--gold-500) 20%,var(--gold-500) 80%,transparent);opacity:.5}.drawn-area{min-width:60px;min-height:80px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;position:relative}.drawn-label{font-size:.7rem;color:var(--gold-500);letter-spacing:.15em;opacity:.8}.tile{width:52px;height:72px;background:var(--tile-face);border:2px solid var(--tile-border);border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:2rem;position:relative;transition:transform .3s var(--ease-spring),box-shadow .3s var(--ease-smooth);box-shadow:0 4px 8px var(--tile-shadow),0 1px #fffc inset,0 -2px 4px #0000001a inset;animation:tile-appear .4s var(--ease-spring) both}@keyframes tile-appear{0%{opacity:0;transform:scale(.8) translateY(10px)}to{opacity:1;transform:scale(1) translateY(0)}}.tile.face-down{background:var(--tile-back);border-color:#3d3a5c;color:var(--ink-faint);font-size:1.4rem;box-shadow:0 4px 8px var(--tile-shadow),0 1px #ffffff0d inset}.tile.face-down:before{content:"";position:absolute;top:6px;right:6px;bottom:6px;left:6px;border:1px solid rgba(255,255,255,.08);border-radius:6px}.tile.clickable{cursor:pointer}.tile.clickable:after{content:"";position:absolute;top:-4px;right:-4px;bottom:-4px;left:-4px;border-radius:14px;border:2px solid transparent;transition:border-color .3s}.tile.clickable:hover{transform:translateY(-12px) scale(1.05);box-shadow:0 16px 32px #0006,0 0 20px #ff5c9d4d,0 1px #fffc inset}.tile.clickable:hover:after{border-color:var(--sakura-400)}.tile.clickable:active{transform:translateY(-6px) scale(1.02)}.tile.drawn{border-color:var(--gold-500);box-shadow:0 4px 8px var(--tile-shadow),var(--glow-gold),0 1px #fffc inset;animation:tile-appear .4s var(--ease-spring) both,drawn-glow 2s ease-in-out infinite}@keyframes drawn-glow{0%,to{box-shadow:0 4px 8px var(--tile-shadow),0 0 20px #d4a85366,0 1px #fffc inset}50%{box-shadow:0 4px 8px var(--tile-shadow),0 0 30px #d4a85399,0 1px #fffc inset}}.tile.discarded{width:42px;height:58px;font-size:1.6rem;opacity:.85}.field{padding:20px 0}.field-inner{display:flex;justify-content:center;align-items:center;gap:48px}.deck-display{display:flex;flex-direction:column;align-items:center;gap:6px}.deck-icon{width:56px;height:72px;background:var(--tile-back);border:2px solid #3d3a5c;border-radius:10px;display:flex;align-items:center;justify-content:center;position:relative;box-shadow:4px 4px #1a1830,8px 8px #13121f}.deck-visual{font-family:Shippori Mincho,serif;font-size:1.4rem;color:var(--ink-faint)}.deck-count{font-family:Shippori Mincho,serif;font-size:1.8rem;font-weight:700;color:var(--gold-500);text-shadow:0 0 20px rgba(212,168,83,.5)}.deck-label{font-size:.75rem;color:var(--ink-faint);letter-spacing:.1em}.discard-zone{background:#0003;border:1px solid rgba(255,255,255,.03);border-radius:16px;padding:16px 24px;min-width:320px}.discard-label{display:flex;align-items:center;gap:8px;font-size:.8rem;color:var(--ink-faint);margin-bottom:12px;letter-spacing:.1em}.discard-icon{display:inline-flex;align-items:center;justify-content:center;width:24px;height:24px;background:#ffffff0d;border-radius:6px;font-family:Shippori Mincho,serif;font-size:.7rem}.discard-pile{display:flex;justify-content:center;gap:6px;flex-wrap:wrap;min-height:58px}.action-area{display:flex;flex-direction:column;align-items:center;gap:16px;padding:20px 0;animation:fade-in .8s var(--ease-smooth) .4s both}.message{min-height:32px;display:flex;align-items:center;justify-content:center}.message-text{font-size:1.1rem;font-weight:700;color:var(--ink);letter-spacing:.1em;text-shadow:0 2px 10px rgba(0,0,0,.5)}.start-btn{display:inline-flex;align-items:center;gap:12px;padding:16px 40px;background:linear-gradient(135deg,var(--sakura-500) 0%,#d44a80 100%);border:none;border-radius:100px;font-family:inherit;font-size:1.1rem;font-weight:700;color:#fff;letter-spacing:.15em;cursor:pointer;position:relative;overflow:hidden;transition:transform .3s var(--ease-spring),box-shadow .3s var(--ease-smooth);box-shadow:0 4px 20px #ff5c9d66,0 0 #ff5c9d66}.start-btn:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:linear-gradient(135deg,rgba(255,255,255,.2) 0%,transparent 50%)}.start-btn:hover{transform:translateY(-3px) scale(1.02);box-shadow:0 8px 30px #ff5c9d80,0 0 0 4px #ff5c9d33}.start-btn:active{transform:translateY(-1px) scale(.98)}.btn-icon{font-size:1.2rem;transition:transform .3s var(--ease-spring)}.start-btn:hover .btn-icon{transform:translate(4px)}.audio-controls{display:flex;align-items:center;justify-content:center}.audio-toggle{display:inline-flex;align-items:center;justify-content:center;padding:8px 14px;border-radius:999px;border:1px solid rgba(255,255,255,.08);background:#ffffff0a;color:var(--ink-muted);font-family:inherit;font-weight:700;letter-spacing:.08em;cursor:pointer;transition:transform .25s var(--ease-spring),background .25s var(--ease-smooth),color .25s var(--ease-smooth)}.audio-toggle:hover{transform:translateY(-1px);background:#ffffff0f;color:var(--ink)}.audio-toggle:active{transform:translateY(0)}.rules-panel{margin-top:auto;padding-top:24px;animation:fade-in .8s var(--ease-smooth) .6s both}.rules-details{background:var(--bg-card);border:1px solid rgba(255,255,255,.05);border-radius:16px;overflow:hidden}.rules-summary{display:flex;align-items:center;gap:10px;padding:16px 20px;font-size:.9rem;font-weight:700;color:var(--ink-muted);letter-spacing:.1em;cursor:pointer;transition:color .3s;list-style:none}.rules-summary::-webkit-details-marker{display:none}.rules-summary:hover{color:var(--ink)}.rules-icon{display:flex;align-items:center;justify-content:center;width:28px;height:28px;background:linear-gradient(135deg,var(--gold-500) 0%,var(--gold-700) 100%);border-radius:50%;font-family:Shippori Mincho,serif;font-size:.85rem;color:#fff}.rules-content{padding:0 20px 20px;animation:rules-open .3s var(--ease-smooth)}@keyframes rules-open{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.rules-list{list-style:none;display:flex;flex-direction:column;gap:12px}.rules-list li{display:flex;align-items:flex-start;gap:12px;font-size:.9rem;color:var(--ink-muted);line-height:1.6}.rule-num{flex-shrink:0;display:flex;align-items:center;justify-content:center;width:28px;height:28px;background:#ffffff0d;border-radius:8px;font-family:Shippori Mincho,serif;font-size:.8rem;color:var(--sakura-400)}@media (max-width: 640px){.logo-icon{font-size:2rem}.logo h1{font-size:1.6rem}.game-area{padding:16px;border-radius:20px}.tile{width:44px;height:62px;font-size:1.7rem;border-radius:8px}.tile.discarded{width:36px;height:50px;font-size:1.3rem}.field-inner{flex-direction:column;gap:20px}.discard-zone{min-width:auto;width:100%}.hand{gap:4px}.hand-wrapper{flex-direction:column;gap:12px}.drawn-separator{width:60px;height:2px;background:linear-gradient(to right,transparent,var(--gold-500) 20%,var(--gold-500) 80%,transparent)}.start-btn{padding:14px 32px;font-size:1rem}}@keyframes shake{0%,to{transform:translate(0)}25%{transform:translate(-5px)}75%{transform:translate(5px)}}@keyframes pulse{0%,to{transform:scale(1)}50%{transform:scale(1.05)}}.message-text.winner{color:var(--gold-300);animation:pulse .8s ease-in-out infinite;text-shadow:0 0 30px rgba(255,214,102,.6)}