/* Trâm Hưng E-Sign — signing desk: cool grey desk, white sheets, ink-blue as the one accent */
:root{
  --desk:#E6E9EE; --panel:#FFFFFF; --soft:#F5F7FA; --ink:#1B2330; --muted:#5A6576; --line:#D6DBE2;
  --pen:#1F3A93; --pen-soft:#E3E9F8; --on-pen:#fff;
  --ok:#1E7A46; --ok-bg:#E3F3E9; --wait:#8A5A00; --wait-bg:#FBF0D5; --bad:#B42318; --bad-bg:#FBE7E4; --idle:#6B7584; --idle-bg:#EDF0F4;
  --ui:"Be Vietnam Pro",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --r:10px;
}
@media (prefers-color-scheme: dark){
  :root{--desk:#12161C;--panel:#1A1F27;--soft:#20262F;--ink:#E5E9EF;--muted:#9AA4B2;--line:#2C333D;--pen:#8FA7F2;--pen-soft:#222B44;--on-pen:#0E1424;
    --ok:#6FD39A;--ok-bg:#16301F;--wait:#E8C060;--wait-bg:#33290F;--bad:#F0857A;--bad-bg:#3A1C19;--idle:#9AA4B2;--idle-bg:#252B34;color-scheme:dark}
}
*{box-sizing:border-box}
[hidden]{display:none!important}
html,body{margin:0}
body{background:var(--desk);color:var(--ink);font:15px/1.55 var(--ui);min-height:100vh}
a{color:var(--pen)}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--pen);outline-offset:2px}
h1,h2,h3{text-wrap:balance;margin:0}

.top{background:var(--panel);border-bottom:1px solid var(--line);padding-block:12px;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px));display:flex;align-items:center;gap:12px;flex-wrap:wrap;position:sticky;top:0;z-index:10}
.brand{display:flex;align-items:center;gap:9px;font-weight:600;font-size:14px;letter-spacing:.06em;white-space:nowrap;text-decoration:none;color:var(--ink)}
.brand .co{color:var(--pen)}
.brand .app{color:var(--muted);font-weight:400;letter-spacing:.02em}
.brand svg{color:var(--pen);flex:none}
.top .sp{flex:1}
.wrap{max-width:1180px;margin:0 auto;padding:24px max(16px,env(safe-area-inset-right,0px)) 64px max(16px,env(safe-area-inset-left,0px))}
.narrow{max-width:760px}

.card{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:22px}
.card+.card{margin-top:16px}
.eyebrow{font-size:11px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.title{font-size:24px;font-weight:600;line-height:1.3}
.sub{color:var(--muted);font-size:14px}
.code{font-variant-numeric:tabular-nums;letter-spacing:.02em}
.stack{display:flex;flex-direction:column;gap:14px}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.grow{flex:1;min-width:0}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;height:42px;padding:0 18px;border:1px solid var(--line);background:var(--panel);border-radius:var(--r);cursor:pointer;font-weight:500;white-space:nowrap;text-decoration:none;color:var(--ink)}
.btn:hover{border-color:var(--pen)}
.btn.primary{background:var(--pen);border-color:var(--pen);color:var(--on-pen)}
.btn.primary:hover{filter:brightness(1.08)}
.btn.danger{color:var(--bad)}
.btn.ghost{border-color:transparent;background:transparent}
.btn.sm{height:34px;padding:0 12px;font-size:14px}
.btn.big{height:50px;font-size:16px;font-weight:600}
.btn:disabled{opacity:.5;cursor:not-allowed}
.link{background:none;border:0;padding:0;color:var(--pen);cursor:pointer;text-decoration:underline;text-underline-offset:3px;font-size:14px}

label.f{display:flex;flex-direction:column;gap:6px;font-size:13px;font-weight:500;color:var(--muted)}
.in,select.in,textarea.in{width:100%;min-height:44px;border:1px solid var(--line);border-radius:var(--r);padding:9px 12px;background:var(--panel);font-size:15px;color:var(--ink)}
textarea.in{min-height:80px;resize:vertical}
.in:focus{border-color:var(--pen);outline:none;box-shadow:0 0 0 3px var(--pen-soft)}
.pin{letter-spacing:.35em;font-size:20px;text-align:center;font-variant-numeric:tabular-nums}
.help{font-size:13px;color:var(--muted)}
.err{color:var(--bad);font-size:14px;min-height:0}

.chip{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;border-radius:99px;padding:3px 10px;white-space:nowrap}
.chip::before{content:"";width:7px;height:7px;border-radius:50%;background:currentColor}
.s-signed,.s-done{color:var(--ok);background:var(--ok-bg)}
.s-sent,.s-active,.s-confirm{color:var(--wait);background:var(--wait-bg)}
.s-rejected,.s-cancelled{color:var(--bad);background:var(--bad-bg)}
.s-waiting,.s-skipped{color:var(--idle);background:var(--idle-bg)}

.steps{list-style:none;margin:0;padding:0;display:flex;flex-direction:column}
.steps li{display:grid;grid-template-columns:28px minmax(0,1fr) auto;gap:10px;align-items:center;padding:11px 0;border-top:1px solid var(--line)}
.steps li:first-child{border-top:0}
.steps .n{width:26px;height:26px;border-radius:50%;display:grid;place-items:center;font-size:12px;font-weight:600;background:var(--idle-bg);color:var(--idle)}
.steps li.signed .n{background:var(--ok-bg);color:var(--ok)}
.steps li.sent .n{background:var(--wait-bg);color:var(--wait)}
.steps li.rejected .n{background:var(--bad-bg);color:var(--bad)}
.steps li.me .nm{font-weight:600}
.steps .nm{min-width:0;overflow:hidden;text-overflow:ellipsis}
.steps .em{display:block;font-size:12px;color:var(--muted);overflow:hidden;text-overflow:ellipsis}
.steps .when{display:block;font-size:12px;color:var(--muted)}

/* document viewer */
.doc{display:flex;flex-direction:column;align-items:center;gap:26px;padding:26px 0 40px}
.page{position:relative;width:min(860px,100%);background:#fff;box-shadow:0 1px 2px rgba(15,25,40,.12),0 8px 24px rgba(15,25,40,.10)}
.page canvas{display:block;width:100%;height:100%}
.page .pno{position:absolute;top:-20px;left:0;font-size:11px;letter-spacing:.06em;color:var(--muted)}
.layer{position:absolute;inset:0}
.placing .layer{cursor:crosshair}
.block{position:absolute;touch-action:none;user-select:none}
.block img{display:block;width:100%;pointer-events:none}
.block.mine{cursor:move;outline:2px dashed var(--pen);outline-offset:4px;background:rgba(31,58,147,.05)}
.block.done{opacity:.95}
.block .hd{position:absolute;right:-11px;bottom:-11px;width:18px;height:18px;border-radius:50%;background:var(--pen);border:3px solid #fff;cursor:nwse-resize;box-shadow:0 1px 3px rgba(0,0,0,.3)}
.block .tag{position:absolute;left:-4px;top:-24px;font-size:11px;font-weight:600;background:var(--pen);color:#fff;border-radius:5px;padding:2px 7px;white-space:nowrap}
.box{position:absolute;border:2px dashed;border-radius:6px;display:flex;align-items:flex-start;justify-content:flex-start;font-size:11px;font-weight:600;padding:3px 6px;touch-action:none;cursor:move;user-select:none}
.box .x{margin-left:auto;border:0;background:transparent;cursor:pointer;font-size:14px;line-height:1;color:inherit;padding:0 2px}

/* sign page layout */
.signlayout{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:24px;align-items:start}
.side{position:sticky;top:84px;display:flex;flex-direction:column;gap:16px}
.actionbar{display:flex;flex-direction:column;gap:10px}
@media (max-width:900px){
  .signlayout{grid-template-columns:1fr}
  .side{position:static;order:-1}
  .actionbar.floating{position:fixed;left:0;right:0;bottom:0;z-index:15;background:var(--panel);border-top:1px solid var(--line);padding:12px max(16px,env(safe-area-inset-right,0px)) calc(12px + env(safe-area-inset-bottom,0px)) max(16px,env(safe-area-inset-left,0px));box-shadow:0 -6px 20px rgba(0,0,0,.08)}
  .doc{padding-bottom:180px}
}
.notice{border-radius:var(--r);padding:14px 16px;font-size:14px;background:var(--pen-soft)}
.notice.ok{background:var(--ok-bg)}
.notice.bad{background:var(--bad-bg)}
.notice.wait{background:var(--wait-bg)}
.notice b{font-weight:600}

/* signature pad */
.seg{display:inline-flex;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;background:var(--panel)}
.seg button{border:0;background:transparent;padding:8px 14px;cursor:pointer;font-size:14px}
.seg button.on{background:var(--pen);color:var(--on-pen)}
.surface{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r);height:200px;overflow:hidden}
.surface canvas{width:100%;height:100%;display:block;touch-action:none;cursor:crosshair}
.surface .base{position:absolute;left:8%;right:8%;bottom:28%;border-bottom:1px solid #C9D0DA;pointer-events:none}
.surface .ph{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;color:#9AA3AF;pointer-events:none;font-size:13px;text-align:center;padding:0 12px}
.fonts{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.fontopt{height:60px;border:1px solid var(--line);border-radius:var(--r);background:#fff;color:#1F3A93;cursor:pointer;font-size:24px;overflow:hidden;white-space:nowrap;padding:0 6px}
.fontopt.on{border-color:var(--pen);box-shadow:0 0 0 2px var(--pen-soft)}
.upl{display:flex;align-items:center;justify-content:center;flex-direction:column;gap:6px;height:100%;color:#6B7584;cursor:pointer;text-align:center;padding:16px;font-size:14px}
.upl img{max-height:150px;max-width:90%}
.sw{width:28px;height:28px;border-radius:50%;border:3px solid var(--panel);box-shadow:0 0 0 1px var(--line);cursor:pointer}
.sw.on{box-shadow:0 0 0 2px var(--pen)}
.sigprev{background:#fff;border:1px solid var(--line);border-radius:var(--r);height:90px;display:flex;align-items:center;justify-content:center;padding:10px}
.sigprev img{max-height:100%;max-width:100%}

/* tables (admin) */
.tablewrap{overflow-x:auto;border:1px solid var(--line);border-radius:12px;background:var(--panel)}
table.t{width:100%;border-collapse:collapse;font-size:14px}
table.t th{text-align:left;font-size:12px;font-weight:600;color:var(--muted);letter-spacing:.04em;padding:10px 14px;border-bottom:1px solid var(--line);white-space:nowrap;background:var(--soft)}
table.t td{padding:11px 14px;border-bottom:1px solid var(--line);vertical-align:top}
table.t tr:last-child td{border-bottom:0}
table.t tr:hover td{background:var(--soft)}
.tabs{display:flex;gap:6px;flex-wrap:wrap}
.tab{display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:var(--r);border:1px solid var(--line);background:var(--panel);text-decoration:none;color:var(--ink);font-size:14px;font-weight:500}
.tab .c{font-size:12px;font-variant-numeric:tabular-nums;background:var(--idle-bg);color:var(--idle);border-radius:99px;padding:0 8px}
.tab.on{border-color:var(--pen);background:var(--pen-soft)}
.timeline{list-style:none;margin:0;padding:0;font-size:13px}
.timeline li{display:grid;grid-template-columns:118px minmax(0,1fr);gap:10px;padding:6px 0;border-top:1px dashed var(--line)}
.timeline li:first-child{border-top:0}
.timeline time{color:var(--muted);font-variant-numeric:tabular-nums}

.toast{position:fixed;left:50%;bottom:calc(24px + env(safe-area-inset-bottom,0px));transform:translateX(-50%);background:#1B2330;color:#fff;padding:11px 18px;border-radius:9px;font-size:14px;z-index:40;max-width:calc(100% - 32px)}
.modal{position:fixed;inset:0;background:rgba(10,15,25,.5);display:flex;align-items:center;justify-content:center;padding:16px;z-index:30}
.modal .card{width:min(600px,100%);max-height:100%;overflow:auto}
.center{text-align:center}
.spin{width:22px;height:22px;border:3px solid var(--line);border-top-color:var(--pen);border-radius:50%;animation:sp .8s linear infinite;display:inline-block}
@keyframes sp{to{transform:rotate(360deg)}}
@media (prefers-reduced-motion:reduce){.spin{animation:none}}
@media (max-width:600px){.title{font-size:20px}.card{padding:18px}.fonts{grid-template-columns:1fr}.timeline li{grid-template-columns:1fr;gap:0}}