:root{--navy:#b72922;--ink:#333;--amber:#333;--bg:#f4f6f9;--card:#fff;--line:#e2e6ec;--txt:#1d2733;--mut:#6b7686;--ok:#2e9e6b;--warn:#e0802b;--bad:#d64545}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--txt);font-family:"Microsoft JhengHei","Noto Sans TC",system-ui,sans-serif;font-size:15px}
button{font:inherit;cursor:pointer}
#app{max-width:980px;margin:0 auto;min-height:100vh;padding-bottom:76px}
header.top{position:sticky;top:0;z-index:5;background:#fff;color:#333;padding:10px 16px;display:flex;align-items:center;gap:10px;padding-top:calc(10px + env(safe-area-inset-top));border-bottom:3px solid var(--navy)}
header.top .logo{height:34px}
header.top h1{font-size:17px;margin:0;flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
header.top button{background:transparent;border:0;color:#333;font-size:15px}
.demo-bar{background:#333;color:#fff;text-align:center;font-size:12px;padding:4px}
main{padding:14px 16px}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:14px;margin-bottom:12px}
.row{display:flex;gap:10px;align-items:center}
.grow{flex:1;min-width:0}
.mut{color:var(--mut);font-size:13px}
.badge{display:inline-block;padding:2px 9px;border-radius:99px;font-size:12px;color:#fff;white-space:nowrap}
.b-進行中{background:var(--ok)}.b-待開工{background:var(--mut)}.b-已完工{background:var(--navy)}
.b-待辦{background:var(--warn)}.b-進行{background:#2b7de0}.b-完成{background:var(--ok)}
.btn{background:var(--navy);color:#fff;border:0;border-radius:9px;padding:9px 14px}
.btn.alt{background:#fff;color:var(--navy);border:1px solid var(--navy)}
.btn.sm{padding:5px 10px;font-size:13px}
.btn.amber{background:#333;color:#fff}
input,select,textarea{font:inherit;width:100%;padding:9px 10px;border:1px solid var(--line);border-radius:9px;background:#fff}
label{display:block;font-size:13px;color:var(--mut);margin:10px 0 4px}
nav.bottom{position:fixed;left:0;right:0;bottom:0;background:#fff;border-top:1px solid var(--line);display:flex;justify-content:center;padding-bottom:env(safe-area-inset-bottom);z-index:6}
nav.bottom .in{display:flex;width:100%;max-width:980px}
nav.bottom a{flex:1;text-align:center;padding:9px 0 8px;color:var(--mut);text-decoration:none;font-size:12px}
nav.bottom a b{display:block;font-size:20px;line-height:1.1}
nav.bottom a.on{color:var(--navy);font-weight:700}
.tabs{display:flex;gap:6px;margin-bottom:12px;overflow-x:auto}
.tabs button{border:1px solid var(--line);background:#fff;border-radius:99px;padding:7px 14px;white-space:nowrap}
.tabs button.on{background:var(--navy);color:#fff;border-color:var(--navy)}
.photos{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:8px}
.photos img{width:100%;aspect-ratio:1;object-fit:cover;border-radius:10px;cursor:pointer;background:#ddd}
.day-h{font-weight:700;margin:14px 0 6px}
.chat{display:flex;flex-direction:column;gap:8px;padding-bottom:8px}
.msg{max-width:82%;padding:8px 11px;border-radius:12px;background:#fff;border:1px solid var(--line);align-self:flex-start}
.msg.me{align-self:flex-end;background:#dcebff;border-color:#c3dbfb}
.msg .who{font-size:11px;color:var(--mut);margin-bottom:2px}
.msg img{max-width:100%;border-radius:8px;margin-top:4px}
.msg .act{margin-top:4px}
.composer{position:sticky;bottom:64px;background:var(--bg);padding:8px 0;display:flex;gap:8px;align-items:center}
.composer input[type=text]{flex:1}
.cal-h{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}
.cal{display:grid;grid-template-columns:repeat(7,1fr);gap:3px}
.cal .w{text-align:center;font-size:12px;color:var(--mut);padding:4px 0}
.cal .d{min-height:62px;background:#fff;border:1px solid var(--line);border-radius:8px;padding:3px;font-size:12px;cursor:pointer;overflow:hidden}
.cal .d.o{opacity:.4}.cal .d.t{border-color:var(--amber);border-width:2px}.cal .d.sel{background:#eef4ff}
.cal .e{display:block;font-size:10px;background:var(--navy);color:#fff;border-radius:4px;padding:0 3px;margin-top:2px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.cal .e.task{background:var(--warn)}
.modal{position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:20;display:flex;align-items:flex-end;justify-content:center}
.modal .box{background:#fff;width:100%;max-width:520px;border-radius:16px 16px 0 0;padding:16px;max-height:90vh;overflow:auto}
@media(min-width:700px){.modal{align-items:center}.modal .box{border-radius:16px}}
.login{max-width:420px;margin:0 auto;padding:40px 16px}
.login .u{display:flex;gap:10px;align-items:center;width:100%;text-align:left;background:#fff;border:1px solid var(--line);border-radius:12px;padding:12px;margin-bottom:8px}
.login .av,.av{width:36px;height:36px;border-radius:50%;background:var(--navy);color:#fff;display:flex;align-items:center;justify-content:center;flex:none;font-size:14px}
#toast{position:fixed;left:50%;bottom:90px;transform:translateX(-50%);background:#222;color:#fff;padding:9px 16px;border-radius:99px;opacity:0;transition:.25s;pointer-events:none;z-index:30;max-width:90%}
#toast.show{opacity:.95}
.empty{text-align:center;color:var(--mut);padding:30px 0}
.lbox{position:fixed;inset:0;background:rgba(0,0,0,.9);z-index:40;display:flex;align-items:center;justify-content:center}
.lbox img{max-width:96%;max-height:92%}