:root{--bg:#f4f6f8;--card:#fff;--text:#111827;--muted:#6b7280;--line:#e5e7eb;--primary:#111827;--green:#15803d;--amber:#b45309;--red:#b91c1c;--blue:#1d4ed8}*{box-sizing:border-box}body{margin:0;font-family:Inter,"Noto Sans TC","Microsoft JhengHei",sans-serif;background:var(--bg);color:var(--text)}button,input,select,textarea{font:inherit}.hidden{display:none!important}.app-shell{min-height:100vh;display:grid;grid-template-columns:240px 1fr}.sidebar{background:#0f172a;color:#fff;padding:24px 16px;display:flex;flex-direction:column;position:sticky;top:0;height:100vh}.brand{display:flex;gap:12px;align-items:center;padding:0 8px 26px}.brand div{display:flex;flex-direction:column}.brand small{color:#94a3b8;margin-top:2px}.brand-mark{width:52px;height:52px;border-radius:16px;background:#fff;color:#111827;display:grid;place-items:center;font-size:26px;font-weight:800;box-shadow:0 10px 30px rgba(0,0,0,.12)}.brand-mark.small{width:40px;height:40px;border-radius:12px;font-size:20px}nav{display:grid;gap:6px}.nav-item{border:0;background:transparent;color:#cbd5e1;padding:12px 14px;border-radius:10px;text-align:left;cursor:pointer}.nav-item:hover,.nav-item.active{background:#1e293b;color:#fff}.sidebar-footer{margin-top:auto;display:grid;gap:10px}.mode-badge{font-size:12px;color:#cbd5e1;padding:10px 12px;border:1px solid #334155;border-radius:10px}.main{padding:30px;min-width:0}.topbar{display:flex;justify-content:space-between;align-items:flex-start;gap:20px;margin-bottom:24px}.topbar h1{margin:0;font-size:30px}.topbar p{margin:6px 0 0;color:var(--muted)}.top-actions{display:flex;gap:10px;flex-wrap:wrap}.primary,.ghost,.danger,.file-label{border:0;border-radius:10px;padding:11px 15px;cursor:pointer;display:inline-flex;align-items:center;justify-content:center}.primary{background:var(--primary);color:#fff}.ghost,.file-label{background:#fff;color:var(--text);border:1px solid var(--line)}.danger{background:#fee2e2;color:#991b1b}.full{width:100%}.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:18px}.stat{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px}.stat .num{font-size:30px;font-weight:800;margin-top:8px}.stat small{color:var(--muted)}.card{background:var(--card);border:1px solid var(--line);border-radius:14px}.toolbar{padding:14px;display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:10px;margin-bottom:18px}input,select,textarea{width:100%;border:1px solid #d1d5db;border-radius:9px;padding:11px 12px;background:#fff;color:var(--text)}input:focus,select:focus,textarea:focus{outline:2px solid #c7d2fe;border-color:#818cf8}.table-card{overflow:hidden}.section-title{padding:18px 20px;display:flex;align-items:center;gap:10px;border-bottom:1px solid var(--line)}.section-title h2{font-size:18px;margin:0}.section-title span{color:var(--muted);font-size:14px}.table-wrap{overflow:auto}table{width:100%;border-collapse:collapse;min-width:850px}th,td{text-align:left;padding:15px 18px;border-bottom:1px solid var(--line);vertical-align:middle}th{font-size:12px;color:var(--muted);background:#fafafa}tbody tr:hover{background:#fafafa}.task-title{font-weight:700}.task-sub{font-size:12px;color:var(--muted);margin-top:4px;max-width:360px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.progress-bar{height:7px;background:#e5e7eb;border-radius:99px;overflow:hidden;width:110px}.progress-fill{height:100%;background:#111827}.progress-text{font-size:12px;color:var(--muted);margin-top:5px}.status{display:inline-flex;padding:5px 9px;border-radius:999px;font-size:12px;font-weight:700}.status.待辦{background:#e5e7eb;color:#374151}.status.進行中{background:#dbeafe;color:#1d4ed8}.status.卡關{background:#fee2e2;color:#b91c1c}.status.已完成{background:#dcfce7;color:#15803d}.overdue{color:#b91c1c;font-weight:700}.icon-btn{border:0;background:transparent;font-size:24px;cursor:pointer}.edit-btn{border:1px solid var(--line);background:#fff;border-radius:8px;padding:7px 10px;cursor:pointer}.empty{text-align:center;padding:60px 20px;color:var(--muted)}.empty button{margin-top:16px}dialog{border:0;border-radius:16px;padding:0;width:min(760px,calc(100% - 24px));box-shadow:0 30px 80px rgba(0,0,0,.25)}dialog::backdrop{background:rgba(15,23,42,.55)}#taskForm{padding:22px}.dialog-head{display:flex;justify-content:space-between;gap:20px;align-items:flex-start;margin-bottom:18px}.dialog-head h2{margin:0}.dialog-head p{margin:5px 0 0;color:var(--muted)}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.form-grid label{font-size:13px;font-weight:700}.form-grid input,.form-grid select,.form-grid textarea{margin-top:7px;font-weight:400}.span-2{grid-column:span 2}.dialog-actions{display:flex;gap:10px;margin-top:20px}.spacer{flex:1}.login-view{min-height:100vh;display:grid;place-items:center;padding:20px;background:linear-gradient(145deg,#eef2ff,#f8fafc)}.login-card{width:min(420px,100%);background:#fff;border:1px solid var(--line);border-radius:18px;padding:32px;box-shadow:0 24px 70px rgba(15,23,42,.12)}.login-card h1{margin:18px 0 6px}.login-card p{color:var(--muted)}.login-card label{font-size:13px;font-weight:700}.login-card input{margin:8px 0 12px}.link-btn{width:100%;margin-top:12px;border:0;background:transparent;color:#1d4ed8;cursor:pointer}.hint{text-align:center;font-size:12px}.toast{position:fixed;right:20px;bottom:20px;background:#111827;color:#fff;padding:12px 16px;border-radius:10px;z-index:9999;opacity:0;transform:translateY(10px);transition:.2s;pointer-events:none}.toast.show{opacity:1;transform:none}@media(max-width:900px){.app-shell{grid-template-columns:1fr}.sidebar{position:static;height:auto;padding:14px}.brand{padding-bottom:12px}nav{grid-template-columns:repeat(5,minmax(110px,1fr));overflow:auto}.sidebar-footer{display:none}.main{padding:18px}.topbar{flex-direction:column}.stats{grid-template-columns:1fr 1fr}.toolbar{grid-template-columns:1fr 1fr}.toolbar input{grid-column:span 2}}@media(max-width:560px){.topbar h1{font-size:24px}.top-actions{width:100%}.top-actions>*{flex:1}.stats{grid-template-columns:1fr 1fr}.toolbar{grid-template-columns:1fr}.toolbar input{grid-column:auto}.form-grid{grid-template-columns:1fr}.span-2{grid-column:auto}.main{padding:12px}.stat{padding:14px}.stat .num{font-size:25px}}