:root{--bg:#f3f6f9;--surface:#fff;--sunk:#e9eef3;--fg:#1f2a33;--muted:#5f6b75;--line:#d8e0e7;--brand:#58b1ef;--brand-d:#2d8fd5;--brand-ink:#4e4d4d;--lamp:#2d8fd5;--lamp-soft:#e4f2fd;--ok:#2f8f5b;--bad:#c0392b;--r:12px;
  font-family:"Be Vietnam Pro",system-ui,sans-serif;color-scheme:light}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--fg);font-size:14.5px;line-height:1.5}
a{color:inherit}h1,h2,h3{margin:0;line-height:1.25}h1{font-size:22px}h2{font-size:17px}
button,input,select,textarea{font:inherit;color:inherit}
input,select,textarea{border:1px solid var(--line);border-radius:8px;padding:7px 10px;background:var(--surface);min-width:0}
input:focus,select:focus,textarea:focus{outline:2px solid var(--lamp);outline-offset:0;border-color:transparent}
label{display:flex;flex-direction:column;gap:4px;font-size:12.5px;color:var(--muted);font-weight:500}
label>input,label>select,label>textarea{color:var(--fg);font-size:14px}
.btn{border:1px solid var(--line);background:var(--surface);border-radius:999px;padding:7px 15px;font-weight:600;font-size:13.5px;cursor:pointer;white-space:nowrap}
.btn:hover{border-color:var(--fg)}.btn.primary{background:var(--brand-d);color:#fff;border-color:var(--brand-d)}.btn.primary:hover{background:#1f7cc0;border-color:#1f7cc0}
.btn.danger{color:var(--bad)}.btn.sm{padding:4px 11px;font-size:12.5px}.btn:disabled{opacity:.5;cursor:default}
.err{color:var(--bad);min-height:1.2em;margin:0;font-size:13px}.ok{color:var(--ok)}
/* đăng nhập */
body.login{min-height:100vh;display:grid;place-items:center;padding:16px;background:linear-gradient(160deg,#eef6fd 0%,#f7f9fb 55%,#e9f1f8 100%)}
.login-wrap{display:grid;grid-template-columns:1.1fr 1fr;width:min(940px,100%);background:var(--surface);border-radius:22px;overflow:hidden;box-shadow:0 30px 80px rgba(30,70,110,.14)}
.login-side{background:linear-gradient(150deg,#58b1ef 0%,#2d8fd5 60%,#1f6fae 100%);color:#fff;padding:44px 40px;display:flex;flex-direction:column;gap:18px;position:relative;overflow:hidden}
.login-side::after{content:"";position:absolute;right:-120px;bottom:-120px;width:340px;height:340px;border-radius:50%;border:44px solid rgba(255,255,255,.12)}
.login-side .side-logo{width:190px;background:#fff;border-radius:14px;padding:14px 18px}
.login-side h2{font-size:24px;line-height:1.3;max-width:340px}.login-side ul{margin:0;padding:0;list-style:none;display:flex;flex-direction:column;gap:10px;font-size:14px}
.login-side li{padding-left:22px;position:relative}.login-side li::before{content:"";position:absolute;left:0;top:7px;width:10px;height:10px;border-radius:3px;background:rgba(255,255,255,.85)}
.login-card{width:min(420px,100%);background:var(--surface);padding:40px 38px;border-radius:22px}
.login-wrap .login-card{width:auto;border-radius:0}.login-card h1{font-size:24px;margin:6px 0 2px}.login-card .muted{margin:0 0 22px}
.card-logo{width:150px;display:block;margin-bottom:18px}.login-wrap .card-logo{display:none}
body.login>.login-card{box-shadow:0 30px 80px rgba(30,70,110,.14);text-align:left}
.login-card form{display:flex;flex-direction:column;gap:14px}.login-card .btn{padding:11px;font-size:14.5px}.foot{color:var(--muted);font-size:12.5px;margin:20px 0 0}
@media (max-width:760px){.login-wrap{grid-template-columns:1fr}.login-side{display:none}.login-wrap .card-logo{display:block}}
/* khung cổng */
.top{position:sticky;top:0;z-index:5;display:flex;align-items:center;gap:18px;padding:10px 22px;background:#fff;color:var(--fg);border-bottom:1px solid var(--line);box-shadow:0 2px 10px rgba(30,70,110,.05)}
.top .logo{height:34px;display:block}.top .tag{font-size:11.5px;color:var(--muted);border-left:1px solid var(--line);padding-left:12px;line-height:1.3}
.top nav{display:flex;gap:2px;flex-wrap:wrap;flex:1}
.top nav button{background:none;border:0;color:var(--muted);padding:8px 12px;border-radius:8px;cursor:pointer;font-weight:600}
.top nav button[aria-current="true"]{background:var(--lamp-soft);color:var(--brand-d)}.top nav button:hover{color:var(--fg)}
.me{display:flex;align-items:center;gap:10px;font-size:13px}.me{color:var(--muted)}
main.page{max-width:1200px;margin:0 auto;padding:22px 20px 60px}
.bar{display:flex;gap:10px;align-items:flex-end;flex-wrap:wrap;margin:0 0 14px}.bar .grow{flex:1}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:18px;margin-bottom:16px}
.card h2{margin-bottom:12px}.muted{color:var(--muted)}.small{font-size:12.5px}
table{width:100%;border-collapse:collapse}th{text-align:left;font-size:11.5px;letter-spacing:.05em;text-transform:uppercase;color:var(--muted);font-weight:600;padding:8px;border-bottom:1px solid var(--line)}
td{padding:9px 8px;border-bottom:1px solid var(--sunk);vertical-align:top}tr:last-child td{border-bottom:0}.tw{overflow-x:auto}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(270px,1fr));gap:14px}
.proj{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:16px;display:flex;flex-direction:column;gap:8px}
.proj h3{font-size:16px}.proj .meta{color:var(--muted);font-size:12.5px}.proj .acts{display:flex;gap:6px;flex-wrap:wrap;margin-top:auto;padding-top:6px}
.pill{display:inline-block;padding:2px 9px;border-radius:999px;background:var(--sunk);font-size:11.5px;font-weight:600}
.pill.st-Thi.công,.pill.on{background:var(--lamp-soft);color:var(--lamp)}.pill.off{background:#f8e0dc;color:var(--bad)}
.form{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px;align-items:end}
.form .full{grid-column:1/-1}.checks{display:flex;flex-wrap:wrap;gap:6px 14px}.checks label{flex-direction:row;align-items:center;gap:6px;color:var(--fg);font-size:13.5px}
dialog{border:0;border-radius:16px;padding:0;width:min(640px,94vw);box-shadow:0 30px 80px rgba(0,0,0,.25)}dialog::backdrop{background:rgba(20,26,24,.45)}
dialog .dh{padding:16px 20px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center}dialog .db{padding:18px 20px}dialog .df{padding:14px 20px;border-top:1px solid var(--line);display:flex;justify-content:flex-end;gap:8px}
.drop{border:2px dashed var(--line);border-radius:12px;padding:22px;text-align:center;color:var(--muted)}.drop.on{border-color:var(--lamp);background:var(--lamp-soft)}
.empty{color:var(--muted);text-align:center;padding:30px}
.toast{position:fixed;right:18px;bottom:18px;background:var(--fg);color:#fff;padding:10px 16px;border-radius:10px;opacity:0;transform:translateY(8px);transition:.2s;z-index:20;max-width:420px}.toast.show{opacity:1;transform:none}
.folder{font-weight:600;margin:14px 0 6px}
@media (max-width:760px){.top{flex-wrap:wrap}.me span{display:none}main.page{padding:16px}}

/* thư mục năm, tháng */
details.yr{margin-bottom:12px}details.yr>summary{font-weight:700;font-size:17px;cursor:pointer;padding:6px 0;list-style:none;display:flex;align-items:center;gap:8px}
details>summary::-webkit-details-marker{display:none}details.yr>summary::before,details.mo>summary::before{content:"▸";color:var(--brand-d);transition:.15s}details[open]>summary::before{transform:rotate(90deg)}
details.mo{margin:0 0 10px 18px}details.mo>summary{font-weight:600;cursor:pointer;padding:5px 0;list-style:none;display:flex;gap:8px;align-items:center;color:var(--muted)}
details.mo .grid{margin:8px 0 6px}.cnt{font-size:12px;font-weight:600;background:var(--sunk);border-radius:999px;padding:1px 8px;color:var(--muted)}
.kd{color:var(--brand-d);font-weight:600;font-size:13px}.share-link{display:flex;gap:8px}.share-link input{flex:1;font-family:ui-monospace,monospace;font-size:12.5px}

.pubbox{background:var(--sunk);border-radius:10px;padding:10px 12px;font-size:13px}.pubbox.warn{background:#fff3e0;border:1px solid #f0b46a}
.badge{display:inline-block;min-width:18px;padding:0 5px;border-radius:9px;background:var(--bad);color:#fff;font-size:11px;line-height:18px;text-align:center}
.fb{border:1px solid var(--line);border-radius:10px;padding:10px 12px;margin-bottom:8px}.fb.done{opacity:.6}.fbh{display:flex;flex-wrap:wrap;gap:4px;align-items:center}.fb p{margin:6px 0 0}
dialog .df{flex-wrap:wrap}dialog .df:empty{display:none}

.bad{border-color:var(--bad)!important;background:#fff6f5!important}.ferr{color:var(--bad);font-size:12px;font-weight:500}.ferr-all:empty{display:none}