:root{--bg:#0f1115;--card:#181b22;--line:#2a2f3a;--tx:#e8eaf0;--mut:#8b93a5;--pri:#4f8cff;--dng:#ff5d5d}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;height:100%;background:var(--bg);color:var(--tx);font:15px/1.5 -apple-system,"Hiragino Sans",sans-serif;touch-action:manipulation;overscroll-behavior:none}
.hidden{display:none!important}
button,input,select,textarea{font:inherit;color:inherit;background:var(--card);border:1px solid var(--line);border-radius:10px;padding:10px}
input,select,textarea{font-size:16px;width:100%}
button{cursor:pointer}
button.pri{background:var(--pri);border-color:var(--pri);color:#fff}
button.danger{color:var(--dng);border-color:var(--dng);width:100%;margin-top:8px}
button.sm{padding:6px 12px;font-size:14px}
button.ic{padding:4px 14px;font-size:22px;line-height:1}
.err{color:var(--dng);min-height:1.2em;margin:6px 0 0}.muted{color:var(--mut)}
#login{height:100%;display:flex;align-items:center;justify-content:center;padding:24px}
#loginForm{width:100%;max-width:340px;display:grid;gap:12px}
#app{height:100%;display:flex;flex-direction:column}
main{flex:1;min-height:0;position:relative}
.tab{position:absolute;inset:0;display:flex;flex-direction:column;overflow-y:auto;padding:0 12px;-webkit-overflow-scrolling:touch}
#tab-chat{overflow:hidden}
.bar{display:flex;align-items:center;gap:8px;padding:12px 0;padding-top:max(12px,env(safe-area-inset-top))}
.bar h2{flex:1;margin:0;font-size:18px;text-align:center}
#chatTitle{text-align:left;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}
nav{display:flex;border-top:1px solid var(--line);background:var(--card);padding-bottom:env(safe-area-inset-bottom)}
nav button{flex:1;border:0;border-radius:0;background:none;display:flex;flex-direction:column;align-items:center;font-size:20px;padding:8px 0;color:var(--mut)}
nav button span{font-size:11px}nav button.on{color:var(--pri)}
.grid{display:grid;grid-template-columns:repeat(7,1fr);gap:2px;text-align:center}
.grid .dow{color:var(--mut);font-size:12px;padding:4px 0}
.grid .d{position:relative;padding:8px 0 12px;border-radius:10px;cursor:pointer}
.grid .d.out{color:var(--mut);opacity:.45}.grid .d.today{outline:1px solid var(--pri)}
.grid .d.sel{background:var(--pri);color:#fff}
.grid .d i{position:absolute;bottom:4px;left:50%;width:5px;height:5px;margin-left:-2px;border-radius:50%;background:var(--pri)}
.grid .d.sel i{background:#fff}
.dayhead{display:flex;align-items:center;justify-content:space-between;margin-top:14px}
.dayhead h3{margin:0;font-size:16px}
.list{list-style:none;margin:8px 0;padding:0;display:grid;gap:8px}
.list li{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:10px 12px;display:flex;gap:10px;align-items:center}
.list li .t{flex:1;min-width:0}.list li .t b{display:block;overflow-wrap:anywhere}.list li .t small{color:var(--mut)}
.list li.done .t b{text-decoration:line-through;color:var(--mut)}
.list li input[type=checkbox]{width:22px;height:22px;padding:0}
.msgs{flex:1;overflow-y:auto;display:flex;flex-direction:column;gap:10px;padding:4px 0 10px;-webkit-overflow-scrolling:touch}
.m{max-width:92%;padding:10px 12px;border-radius:14px;white-space:pre-wrap;overflow-wrap:anywhere}
.m.user{align-self:flex-end;background:var(--pri);color:#fff}
.m.assistant{align-self:flex-start;background:var(--card);border:1px solid var(--line)}
.m pre{background:#0b0d11;padding:8px;border-radius:8px;overflow-x:auto;margin:6px 0}
.m a{color:#8fb7ff}
.m .act{display:block;margin-top:6px;padding:4px 8px;border-radius:8px;background:#1e3a2a;color:#9be3b0;font-size:13px}
.m.err{border-color:var(--dng)}
.composer{display:flex;gap:8px;padding:8px 0;padding-bottom:max(8px,env(safe-area-inset-bottom))}
.composer textarea{resize:none;max-height:140px}
.sheet{position:fixed;inset:0;background:rgba(0,0,0,.6);display:flex;align-items:flex-end;justify-content:center;z-index:10}
.sheetbox{background:var(--bg);border:1px solid var(--line);border-radius:16px 16px 0 0;width:100%;max-width:560px;max-height:85%;overflow-y:auto;padding:16px;display:grid;gap:10px}
.sheetbox h3{margin:0}
.two{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:12px;margin-bottom:12px;display:grid;gap:10px}
.card label{display:grid;gap:4px}.card label.row{display:flex;gap:8px;align-items:center}
.card input[type=checkbox]{width:20px;height:20px;padding:0}
.card p{margin:0}