:root{--bg: #0f1729;--surface: rgba(255, 255, 255, .08);--surface-2: rgba(255, 255, 255, .14);--text: #e6e8ec;--muted: #9aa4b2;--primary: #6aa9ff;--primary-2: #3f8cff;--ring: rgba(99, 132, 255, .6);--success: #22c55e;--radius: 12px;--shadow: 0 10px 30px rgba(0, 0, 0, .25)}@media (prefers-color-scheme: light){:root{--bg: #f7f8fb;--surface: #ffffff;--surface-2: #f1f5f9;--text: #0f1623;--muted: #5b6676;--primary: #3f8cff;--primary-2: #2f6be6;--ring: rgba(63, 140, 255, .35);--shadow: 0 10px 30px rgba(25, 50, 100, .12)}}*{box-sizing:border-box}html,body{height:100%}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Hiragino Kaku Gothic ProN,Noto Sans JP,Yu Gothic,Meiryo,Arial,sans-serif;color:var(--text);background:radial-gradient(1200px 800px at 20% -20%,rgba(63,140,255,.15),transparent 60%),radial-gradient(1000px 700px at 120% 20%,rgba(34,197,94,.12),transparent 50%),var(--bg);line-height:1.6}h1,h2{margin:0 0 12px}h1{letter-spacing:.2px;text-align:center;padding:20px 0}h2{letter-spacing:.2px;color:var(--muted);font-weight:600}#create-room,#join-room,#vote-area{background:linear-gradient(180deg,#ffffff0f,#ffffff0a);border:1px solid rgba(255,255,255,.11);border-radius:calc(var(--radius) + 4px);padding:18px 16px;box-shadow:var(--shadow);margin:16px auto;width:min(960px,94%)}.label{display:inline-block;margin:4px 0 6px;color:var(--muted);font-size:.95rem}.input{width:min(520px,100%);appearance:none;border:1px solid transparent;background:var(--surface);color:var(--text);padding:12px 14px;font-size:16px;border-radius:var(--radius);outline:none;transition:border-color .2s ease,box-shadow .2s ease,background .2s ease,transform .05s ease;box-shadow:inset 0 0 0 1px #ffffff0d}.input::placeholder{color:var(--muted)}.input:focus{border-color:var(--primary);box-shadow:0 0 0 6px var(--ring);background:var(--surface-2)}.input:active{transform:translateY(1px)}.input-readonly{cursor:default}#roomInput,#roomShareUrl,#usernameInput{width:min(520px,100%);appearance:none;border:1px solid transparent;background:var(--surface);color:var(--text);padding:12px 14px;font-size:16px;border-radius:var(--radius);outline:none;transition:border-color .2s ease,box-shadow .2s ease,background .2s ease,transform .05s ease;box-shadow:inset 0 0 0 1px #ffffff0d}#roomInput::placeholder,#roomShareUrl::placeholder,#usernameInput::placeholder{color:var(--muted)}#roomInput:focus,#roomShareUrl:focus,#usernameInput:focus{border-color:var(--primary);box-shadow:0 0 0 6px var(--ring);background:var(--surface-2)}#roomShareUrl[readonly]{cursor:default}#user-info{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;margin:16px 0;text-align:center}#usernameInput{width:min(320px,90%)}#roomLinkBox,#join-room{display:grid;gap:10px;grid-template-columns:1fr auto;align-items:center}#join-room h2{grid-column:1 / -1}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 16px;min-height:40px;border-radius:calc(var(--radius) - 2px);border:1px solid transparent;background:linear-gradient(180deg,var(--surface),var(--surface-2));color:var(--text);font-size:15px;font-weight:600;letter-spacing:.2px;cursor:pointer;transition:transform .06s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease,opacity .2s ease;box-shadow:var(--shadow);backdrop-filter:saturate(120%) blur(4px)}.btn:hover{transform:translateY(-1px);border-color:#ffffff1f}.btn:active{transform:translateY(1px)}.btn:focus-visible{outline:none;box-shadow:0 0 0 6px var(--ring)}.btn[disabled]{opacity:.55;cursor:not-allowed}.btn-primary{background:linear-gradient(180deg,var(--primary),var(--primary-2));color:#fff;border-color:transparent}.btn-primary:hover{filter:brightness(1.03)}.btn-primary:active{filter:brightness(.98)}.btn-ghost{background:transparent;border:1px solid rgba(255,255,255,.18);color:var(--text)}.btn-ghost:hover{background:var(--surface)}#createRoomBtn,#copyLinkBtn,#joinRoomBtn,#toggleStartReset,#toggleEndReveal{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 16px;min-height:40px;border-radius:calc(var(--radius) - 2px);border:1px solid transparent;background:linear-gradient(180deg,var(--surface),var(--surface-2));color:var(--text);font-size:15px;font-weight:600;letter-spacing:.2px;cursor:pointer;transition:transform .06s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease,opacity .2s ease;box-shadow:var(--shadow);backdrop-filter:saturate(120%) blur(4px)}#createRoomBtn,#toggleStartReset{background:linear-gradient(180deg,var(--primary),var(--primary-2));color:#fff}#copyLinkBtn{background:transparent;border:1px solid rgba(255,255,255,.18)}#copyLinkBtn:hover{background:var(--surface)}.card-container{display:grid;grid-template-columns:repeat(auto-fit,minmax(84px,1fr));gap:10px;width:100%;margin:0 auto}.card{background:var(--surface);color:var(--text);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow);text-align:center;font-size:18px;font-weight:700;cursor:pointer;border:1px solid rgba(255,255,255,.08);transition:transform .06s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease}.card:hover{transform:translateY(-2px);border-color:#ffffff2e}.card:active{transform:translateY(1px)}.card:focus-visible{outline:none;box-shadow:0 0 0 6px var(--ring)}#votes{margin-top:16px;margin-bottom:48px;display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:16px;align-items:start}.vote-card{position:relative;width:120px;height:160px;margin:0 auto;perspective:1000px}.voter-name{margin-top:6px;text-align:center;color:var(--muted);font-size:.95rem}.hidden{display:none!important}@media (max-width: 520px){#roomLinkBox,#join-room{grid-template-columns:1fr}.card-container{grid-template-columns:repeat(auto-fit,minmax(72px,1fr))}.vote-card{width:108px;height:148px}}.flip-inner{width:100%;height:100%;position:relative;transform-style:preserve-3d;transition:transform 1s ease-in-out;transform:rotateY(180deg)}.vote-card.revealed .flip-inner{transform:rotateY(0)}.flip-front,.flip-back{position:absolute;inset:0;backface-visibility:hidden;border:1px solid rgba(255,255,255,.14);border-radius:var(--radius);background:#fff;color:#000;display:flex;align-items:center;justify-content:center;font-size:64px;font-weight:700;box-shadow:var(--shadow);padding:8px}.flip-back{transform:rotateY(180deg);background:url("./media/goat-U5GFKPVX.png") center/cover no-repeat;color:transparent;text-shadow:none}option{background:var(--surface);color:#000}