:root{--bg:#fff8f0;--card-bg:#fff;--text:#2c2422;--muted:#8a7c74;--accent:#ff8a5b;--accent-dark:#e96f3f;--bubble-other:#f3ede6;--bubble-self:#ffe3d1;--border:#eee1d6;--mention:#fff2b8;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}@media (prefers-color-scheme:dark){:root{--bg:#201a17;--card-bg:#2b2320;--text:#f3ece6;--muted:#b3a49b;--accent:#ff8a5b;--accent-dark:#ffa679;--bubble-other:#3a312c;--bubble-self:#5a3a26;--border:#40332c;--mention:#5c4d1f;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}}*{box-sizing:border-box}html,body,#root{height:100%}body{background:var(--bg);color:var(--text);margin:0;font-family:Hiragino Sans,Noto Sans JP,system-ui,-apple-system,sans-serif}button,input,textarea{font-family:inherit}.page-center{justify-content:center;align-items:center;min-height:100%;padding:24px;display:flex}.card{background:var(--card-bg);border:1px solid var(--border);border-radius:20px;padding:32px 28px;box-shadow:0 10px 30px #0000000f}.home-card{text-align:center;width:100%;max-width:420px}.home-hero{letter-spacing:4px;margin-bottom:8px;font-size:36px}.home-card h1{margin:0 0 8px;font-size:24px}.muted{color:var(--muted);line-height:1.6}.muted.small{margin-top:16px;font-size:12px}.btn{cursor:pointer;border:none;border-radius:999px;padding:12px 24px;font-size:15px;font-weight:600;transition:transform 50ms,opacity .2s}.btn:active{transform:scale(.97)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--accent);color:#fff;text-decoration:none;display:inline-block}.btn-primary:hover:not(:disabled){background:var(--accent-dark)}.btn-ghost{border:1px solid var(--border);color:var(--text);background:0 0;padding:8px 14px;font-size:13px}.btn-danger{color:#d64545;border-color:#d6454555}.field-label{text-align:left;color:var(--muted);margin:16px 0 6px;font-size:12px;display:block}.text-input{border:1px solid var(--border);background:var(--bg);width:100%;color:var(--text);resize:none;border-radius:12px;margin:16px 0;padding:12px 14px;font-size:16px}.field-label+.text-input{margin-top:0}.text-input:focus{outline:2px solid var(--accent)}.error-text{color:#d64545;font-size:14px}.image-error{margin:0;padding:4px 16px;font-size:12px}.link-mode-toggle{width:100%;color:var(--muted);cursor:pointer;background:0 0;border:none;margin-top:14px;font-size:12px;text-decoration:underline;display:block}.link-code-banner{background:var(--bubble-other);border-radius:10px;flex-direction:column;gap:6px;margin-bottom:6px;padding:10px 12px;font-size:13px;display:flex}.link-code-banner .link-code-value{letter-spacing:.05em;color:var(--accent-dark);font-size:20px;font-weight:700}.link-code-banner-row{justify-content:space-between;align-items:center;gap:8px;display:flex}.feature-list{text-align:left;color:var(--muted);flex-direction:column;gap:10px;margin:24px 0 0;padding:0;font-size:14px;list-style:none;display:flex}.chat-page{flex-direction:column;height:100dvh;display:flex}.chat-header{border-bottom:1px solid var(--border);background:var(--card-bg);flex-wrap:wrap;justify-content:space-between;align-items:center;row-gap:6px;padding:12px 16px;display:flex}.chat-header-title{text-overflow:ellipsis;white-space:nowrap;max-width:100%;font-weight:700;overflow:hidden}.chat-header-actions{flex-wrap:wrap;justify-content:flex-end;align-items:center;gap:8px;display:flex}.header-menu-wrapper{position:relative}.header-menu-toggle{padding:8px 12px;font-size:16px;line-height:1}.header-menu{background:var(--card-bg);border:1px solid var(--border);z-index:10;border-radius:12px;flex-direction:column;gap:2px;min-width:220px;padding:6px;display:flex;position:absolute;top:calc(100% + 6px);right:0;box-shadow:0 10px 30px #0000001f}.header-menu-item{text-align:left;width:100%;color:var(--text);cursor:pointer;white-space:nowrap;background:0 0;border:none;border-radius:8px;padding:10px 12px;font-size:14px;display:block}.header-menu-item:hover{background:var(--bubble-other)}.header-menu-item-danger{color:#d64545}.header-menu-note{color:var(--muted);cursor:default;font-size:12px}.header-menu-divider{background:var(--border);height:1px;margin:4px 0}.member-bar{border-bottom:1px solid var(--border);background:var(--card-bg);align-items:center;gap:6px;padding:8px 16px;display:flex;overflow-x:auto}.member-avatar{flex:none;font-size:20px}.pinned-bar{background:var(--mention);border-bottom:1px solid var(--border);align-items:center;gap:8px;padding:8px 16px;display:flex}.pinned-bar-content{text-align:left;cursor:pointer;min-width:0;color:var(--text);text-overflow:ellipsis;white-space:nowrap;background:0 0;border:none;flex:1;font-size:13px;overflow:hidden}.pinned-bar-unpin{cursor:pointer;color:var(--muted);background:0 0;border:none;flex:none;font-size:14px}.member-avatar.is-self{filter:drop-shadow(0 0 0 2px var(--accent))}.member-count{color:var(--muted);white-space:nowrap;flex:none;margin-left:auto;font-size:12px}.message-list{flex-direction:column;flex:1;gap:10px;padding:16px;display:flex;overflow-y:auto}.empty-state{text-align:center;margin-top:40px}.system-message{color:var(--muted);text-align:center;align-self:center;padding:2px 10px;font-size:12px}.message-row{align-items:flex-end;gap:8px;max-width:80%;display:flex}.message-row.is-self{flex-direction:row-reverse;align-self:flex-end}.message-avatar{flex:none;font-size:22px}.message-bubble{background:var(--bubble-other);border-radius:16px;min-width:40px;padding:8px 12px}.message-row.is-self .message-bubble{background:var(--bubble-self)}.message-bubble.is-mention{box-shadow:0 0 0 2px var(--accent) inset}.message-author{color:var(--accent-dark);margin-bottom:2px;font-size:12px;font-weight:700}.message-text{white-space:pre-wrap;word-break:break-word;font-size:15px}.message-link{color:var(--accent-dark);word-break:break-all;text-decoration:underline}.mention-token{color:var(--accent-dark);font-weight:700}.message-image-link{margin-bottom:6px;display:block}.message-image{object-fit:cover;border-radius:12px;max-width:100%;max-height:260px;display:block}.link-embed{max-width:100%;margin-top:6px}.link-embed-youtube{aspect-ratio:16/9;border-radius:12px;width:100%;max-width:320px;position:relative;overflow:hidden}.link-embed-youtube iframe{border:none;width:100%;height:100%;position:absolute;inset:0}.link-embed-twitter{border-radius:12px;width:100%;max-width:100%;max-height:150px;position:relative;overflow:hidden}.link-embed-twitter iframe{max-width:100%}.link-embed-twitter:after{content:"";background:linear-gradient(to bottom, transparent, var(--bubble-other));pointer-events:none;height:36px;position:absolute;bottom:0;left:0;right:0}.message-row.is-self .link-embed-twitter:after{background:linear-gradient(to bottom, transparent, var(--bubble-self))}.link-embed-image-link{margin-top:6px;display:block}.link-embed-image{object-fit:cover;border-radius:12px;max-width:100%;max-height:150px;display:block}.message-meta{color:var(--muted);align-items:center;gap:8px;margin-top:4px;font-size:11px;display:flex}.reply-btn{color:var(--muted);cursor:pointer;background:0 0;border:none;margin:-8px -4px;padding:8px 4px;font-size:12px;text-decoration:underline}.reply-quote{text-align:left;border:none;border-left:3px solid var(--accent);width:100%;color:var(--muted);cursor:pointer;white-space:nowrap;text-overflow:ellipsis;background:#0000000d;border-radius:6px;margin-bottom:6px;padding:4px 8px;font-size:12px;display:block;overflow:hidden}.highlight-wrap{border-radius:16px;animation:1.5s flash-highlight}@keyframes flash-highlight{0%{background:var(--mention)}to{background:0 0}}.message-input-area{border-top:1px solid var(--border);background:var(--card-bg);padding:10px 12px calc(10px + env(safe-area-inset-bottom))}.reply-banner{background:var(--bubble-other);border-radius:10px;justify-content:space-between;align-items:center;gap:8px;margin-bottom:6px;padding:6px 10px;font-size:12px;display:flex}.reply-banner button{cursor:pointer;color:var(--muted);background:0 0;border:none;flex:none;font-size:14px}.message-input-row{align-items:flex-end;gap:8px;display:flex}.message-textarea{max-height:120px;margin:0}.send-btn{flex:none;padding:12px 20px}.photo-btn{flex:none;padding:10px 14px;font-size:18px;line-height:1}.photo-error{margin:0 0 6px;font-size:12px}.mention-suggestions{flex-wrap:wrap;gap:6px;margin-bottom:8px;display:flex}.mention-suggestion{background:var(--bubble-other);border:1px solid var(--border);color:var(--text);cursor:pointer;border-radius:999px;padding:6px 12px;font-size:13px}.mention-suggestion:hover{border-color:var(--accent)}