:root{--primary:#009999;--primary-d:#007a7a;--bg:#f2f5f7;--card:#fff;--text:#1d2939;--muted:#667085;--line:#e4e7ec;--danger:#d92d20;--ok:#067647}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans TC","Microsoft JhengHei",sans-serif;background:var(--bg);color:var(--text);font-size:15px}
.hidden{display:none !important}
button{font:inherit;border:0;border-radius:8px;padding:9px 16px;background:var(--primary);color:#fff;cursor:pointer;white-space:nowrap}
button:hover{background:var(--primary-d)}
button:disabled{opacity:.6;cursor:wait}
button.ghost{background:#fff;color:var(--primary);border:1px solid var(--primary)}
button.ghost:hover{background:#e6f7f7}
button.danger{background:var(--danger)}
button.small{padding:5px 10px;font-size:13px}
input,select{font:inherit;width:100%;padding:9px 10px;border:1px solid #d0d5dd;border-radius:8px;background:#fff;margin-top:4px;color:var(--text)}
input:focus,select:focus{outline:2px solid #99e0e0;border-color:var(--primary)}
label{display:block;margin-bottom:12px;font-size:14px;color:var(--muted)}
label.check{display:flex;gap:8px;align-items:center}
label.check input{width:auto;margin:0}
.card,.week-grid .day,.table-wrap,.modal-box{box-shadow:0 2px 10px rgba(16,24,40,.08)}
.card{background:var(--card);border-radius:14px}
.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px}
.login-card{width:100%;max-width:360px;padding:28px}
.login-card h1{font-size:22px;margin:0 0 20px;text-align:center;color:var(--primary-d)}
.login-card button{width:100%}
.form-error{color:var(--danger);min-height:1.2em;font-size:14px;margin:6px 0}
.topbar{display:flex;flex-wrap:wrap;align-items:center;gap:10px 16px;padding:12px 20px;background:var(--primary);color:#fff}
.topbar .brand{font-weight:700;font-size:18px;margin-right:auto}
.topbar .tag{background:rgba(255,255,255,.2);color:#fff}
.topbar button{background:transparent;color:#fff;border:1px solid #fff}
.topbar button:hover{background:rgba(255,255,255,.15)}
.tabs{display:flex;gap:4px;padding:0 16px;background:#fff;border-bottom:1px solid var(--line);overflow-x:auto}
.tab{background:none;color:var(--muted);border-radius:0;padding:12px 14px;border-bottom:3px solid transparent}
.tab:hover{background:none;color:var(--primary)}
.tab.active{color:var(--primary-d);border-bottom-color:var(--primary);font-weight:600}
.content{padding:16px;max-width:1280px;margin:0 auto}
.toolbar{display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:space-between;margin-bottom:14px}
.toolbar h2{margin:0;font-size:18px}
.nav-group{display:flex;gap:6px;align-items:center;flex-wrap:wrap}
.week-label{margin-left:8px;font-weight:600}
.toolbar-right{display:flex;gap:8px;align-items:center}
.toolbar-right select{width:auto;min-width:180px;margin:0}
.week-grid{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:10px}
.day{background:var(--card);border-radius:12px;min-height:180px;overflow:hidden}
.day.today{outline:2px solid var(--primary)}
.day-head{display:flex;justify-content:space-between;align-items:center;padding:8px 10px;border-bottom:1px solid var(--line);background:#fafbfc}
.day.today .day-head{background:#e6f7f7}
.day-head span{color:var(--muted);font-size:13px;margin-right:6px}
.day-head .add-day{padding:2px 9px;background:#fff;color:var(--primary);border:1px solid var(--primary)}
.day-body{padding:8px;display:flex;flex-direction:column;gap:8px}
.booking{display:flex;flex-direction:column;align-items:flex-start;gap:2px;text-align:left;background:hsl(var(--hue) 70% 96%);color:var(--text);border-left:4px solid hsl(var(--hue) 70% 42%);border-radius:8px;padding:8px 10px;width:100%;white-space:normal}
.booking:hover{background:hsl(var(--hue) 70% 92%)}
.booking.mine{box-shadow:inset 0 0 0 1px hsl(var(--hue) 70% 42%)}
.booking .time{font-size:12px;color:var(--muted);font-weight:600}
.booking .title{font-weight:600;word-break:break-all}
.booking .meta{font-size:12px;color:var(--muted)}
.empty{color:#98a2b3;font-size:13px;text-align:center;padding:14px 0}
.table-wrap{overflow-x:auto;background:var(--card);border-radius:12px}
table{width:100%;border-collapse:collapse;min-width:520px}
th,td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--line);font-size:14px;vertical-align:middle}
th{color:var(--muted);font-weight:600;background:#fafbfc}
.ops{white-space:nowrap}
.ops button+button{margin-left:6px}
.tag{display:inline-block;padding:2px 8px;border-radius:999px;font-size:12px;background:#eef2f6;color:var(--muted)}
.tag.ok{background:#ecfdf3;color:var(--ok)}
.tag.off{background:#fef3f2;color:var(--danger)}
.modal{position:fixed;inset:0;background:rgba(16,24,40,.45);display:flex;align-items:center;justify-content:center;padding:16px;z-index:10}
.modal-box{background:#fff;border-radius:14px;width:100%;max-width:440px;max-height:92vh;overflow:auto;padding:20px 22px}
.modal-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}
.modal-head h3{margin:0}
.modal-head button{background:none;color:var(--muted);padding:4px 8px}
.modal-head button:hover{background:none}
.actions{display:flex;justify-content:flex-end;gap:8px;margin-top:14px;flex-wrap:wrap}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.detail{display:grid;grid-template-columns:90px 1fr;gap:8px 12px;margin:0}
.detail dt{color:var(--muted)}
.detail dd{margin:0;font-weight:500}
#toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%) translateY(20px);background:#1d2939;color:#fff;padding:10px 18px;border-radius:10px;opacity:0;transition:.25s;pointer-events:none;max-width:90vw;z-index:20}
#toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
@media (max-width:860px){.week-grid{grid-template-columns:1fr}.day{min-height:0}}
@media (max-width:520px){
  .toolbar-right{width:100%}
  .toolbar-right select{flex:1;min-width:0}
  .toolbar-right button{flex:none}
  .row2{grid-template-columns:1fr}
  .content{padding:12px}
  .topbar .brand{width:100%}
}

.card.rules{padding:16px 18px;margin-bottom:14px}
.card.rules h3{margin:0 0 10px;font-size:16px}
.rules-row{display:flex;gap:10px;align-items:flex-end;flex-wrap:wrap}
.rules-row label{flex:1;min-width:220px;margin:0}
.hint{font-size:13px;color:var(--muted);margin:0 0 12px}