:root{
  --ground:#F4F2EE; --surface:#FFFFFF; --lane:#EAE7E1; --ink:#17181C; --muted:#55575E;
  --line:#E2DFD8; --field:#CFCBC2; --accent:#2C44C9; --accent-soft:#E8EBFA; --accent-ink:#1F318F;
  --warn:#B4530A; --warn-soft:#FCEBDD; --warn-ink:#8A3D05; --chip:#F1EFEA;
  --display:Lexend, "Be Vietnam Pro", system-ui, sans-serif; --body:"Be Vietnam Pro", system-ui, sans-serif;
}
*{box-sizing:border-box}
html,body{margin:0;background:var(--ground);color:var(--ink);font-family:var(--body);font-size:15px}
a{color:var(--accent)}a:hover{color:var(--accent-ink)}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
h1,h2,h3{font-family:var(--display);margin:0}
.muted{color:var(--muted)}
.hide{display:none!important}

/* header */
.top{height:72px;padding:0 32px;display:flex;align-items:center;justify-content:space-between;gap:24px;background:var(--surface);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}
.brand{display:flex;align-items:center;gap:12px;font-family:var(--display);font-weight:600;font-size:17px;white-space:nowrap}
.brand i{width:28px;height:28px;border-radius:8px;background:var(--accent);display:block}
.nav{display:flex;gap:6px;flex-wrap:wrap}
.nav button{height:40px;padding:0 16px;border:0;border-radius:8px;background:none;color:#3A3C42;font-weight:500;cursor:pointer;display:flex;align-items:center;gap:8px}
.nav button[aria-current="page"]{background:var(--accent-soft);color:var(--accent-ink);font-weight:600}
.badge{min-width:22px;height:22px;padding:0 6px;border-radius:999px;background:var(--accent);color:#fff;font-size:12px;display:inline-flex;align-items:center;justify-content:center}
.badge.warn{background:var(--warn-soft);color:var(--warn-ink);font-weight:600}
.who{display:flex;align-items:center;gap:14px;text-align:right}
.who b{display:block;font-size:15px}.who small{color:var(--muted)}

/* buttons & fields */
.btn{height:44px;padding:0 18px;border-radius:10px;border:1px solid var(--field);background:var(--surface);font-weight:600;cursor:pointer}
.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}
.btn.dark{background:var(--ink);border-color:var(--ink);color:#fff}
.btn:disabled{opacity:.55;cursor:wait}
.field{display:flex;flex-direction:column;gap:6px}
.field label{font-size:14px;font-weight:600}
.field input,.field select,.field textarea{height:46px;padding:0 14px;border:1px solid var(--field);border-radius:10px;background:#fff;font-size:15px}
.field textarea{height:110px;padding:12px 14px;resize:vertical}
.check{display:flex;align-items:center;gap:10px;font-size:14px}
.check input{width:18px;height:18px}
.error{color:#A01818;font-size:14px;min-height:20px}

/* login */
.login{min-height:calc(100vh - 72px);display:flex;gap:40px;padding:48px 56px;align-items:flex-start}
.login .col{width:440px;flex-shrink:0;display:flex;flex-direction:column;gap:24px}
.login h1{font-size:40px;line-height:1.15;font-weight:700}
.card{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:32px;display:flex;flex-direction:column;gap:18px}
.order{flex:1;min-width:0}
.order .head{display:flex;justify-content:space-between;align-items:flex-start;gap:16px}
.pill{padding:6px 12px;border-radius:999px;background:var(--warn-soft);color:var(--warn-ink);font-size:13px;font-weight:600;white-space:nowrap}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:16px 20px}
.grid2 .wide{grid-column:1/-1}
.honey{position:absolute;left:-9999px}

/* main */
.main{padding:28px 32px 48px}
.main-head{display:flex;justify-content:space-between;align-items:flex-end;gap:16px;margin-bottom:20px}
.main-head h1{font-size:30px;font-weight:700}
.board{display:grid;grid-template-columns:repeat(4,minmax(240px,1fr));gap:18px;align-items:start}
.lane{background:var(--lane);border-radius:14px;padding:14px;display:flex;flex-direction:column;gap:12px;min-height:160px}
.lane h2{font-family:var(--body);font-size:15px;font-weight:600;display:flex;justify-content:space-between}
.task{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:16px;display:flex;flex-direction:column;gap:10px}
.task.soon{border:2px solid var(--warn)}
.task .meta{display:flex;justify-content:space-between;font-size:13px;color:var(--muted)}
.task h3{font-family:var(--body);font-size:16px;font-weight:600;line-height:1.35}
.chips{display:flex;gap:6px;flex-wrap:wrap}
.chip{padding:4px 10px;border-radius:999px;background:var(--chip);font-size:12px;font-weight:600}
.chip.warn{background:var(--warn-soft);color:var(--warn-ink)}
.chip.blue{background:var(--accent-soft);color:var(--accent-ink)}
.due{font-size:13px;color:var(--muted)}.due.soon{color:var(--warn-ink);font-weight:600}
.row{display:flex;gap:8px}.row .btn{flex:1}
.empty{font-size:14px;color:var(--muted);padding:8px 2px}

/* table */
.table{background:var(--surface);border:1px solid var(--line);border-radius:14px;overflow:auto}
table{width:100%;border-collapse:collapse;min-width:760px}
th{font-size:13px;color:var(--muted);text-align:left;padding:14px 18px;border-bottom:1px solid var(--line);font-weight:600}
td{padding:16px 18px;border-bottom:1px solid var(--line);font-size:15px}
tr:last-child td{border-bottom:0}
tr.pick{cursor:pointer}tr.pick:hover td{background:#FAF9F7}
tr.on td{background:#F2F4FD}
.filters{display:flex;gap:10px;margin-bottom:14px;flex-wrap:wrap}
.filters select{height:40px;border:1px solid var(--field);border-radius:8px;padding:0 10px;background:#fff}

/* split layout */
.split{display:flex;gap:24px;align-items:flex-start}
.split>.table{flex:1}
.panel{width:440px;flex-shrink:0;background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:24px;display:flex;flex-direction:column;gap:16px;position:sticky;top:96px}
.panel h2{font-size:20px;font-weight:600}
.people{display:flex;flex-direction:column;gap:8px}
.person{display:flex;align-items:center;justify-content:space-between;min-height:48px;padding:0 14px;border:1px solid var(--line);border-radius:10px;cursor:pointer}
.person:has(input:checked){border:2px solid var(--accent)}
.person span{display:flex;align-items:center;gap:10px}
.person small{color:var(--muted)}.person small.over{color:var(--warn-ink);font-weight:600}
.multi{display:flex;flex-wrap:wrap;gap:8px}
.multi label{display:flex;align-items:center;gap:6px;padding:6px 10px;border:1px solid var(--line);border-radius:8px;font-size:14px;cursor:pointer}

/* drawer */
.drawer-bg{position:fixed;inset:0;background:rgba(23,24,28,.35);z-index:20;display:flex;justify-content:flex-end}
.drawer{width:min(460px,100%);height:100%;background:var(--surface);padding:28px;display:flex;flex-direction:column;gap:16px;overflow:auto}
.drawer h2{font-size:20px}

#toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:var(--ink);color:#fff;padding:12px 18px;border-radius:10px;font-size:14px;opacity:0;pointer-events:none;transition:opacity .2s;z-index:30}
#toast.show{opacity:1}

@media (max-width:1100px){
  .login{flex-direction:column;padding:28px 20px}.login .col{width:100%}
  .board{grid-template-columns:1fr 1fr}
  .split{flex-direction:column}.panel{width:100%;position:static}
  .top{padding:0 16px;height:auto;min-height:64px;flex-wrap:wrap;padding-top:10px;padding-bottom:10px}
  .main{padding:20px 16px 40px}
}
@media (max-width:640px){.board{grid-template-columns:1fr}.grid2{grid-template-columns:1fr}.login h1{font-size:30px}}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}