:root{
  --brand:#73BDBE;
  --brand-dark:#1F5C60;
  --paper:#FFFFFF;
  --surface:#F4F8F8;
  --line:#D8E4E4;
  --ink:#1B2B2C;
  --ink-dim:#5C7778;
  --stamp-red:#C1440E;
  --stamp-green:#2E8B57;
  --stamp-amber:#C98A1E;
}
*{box-sizing:border-box; -webkit-tap-highlight-color:transparent;}
html,body{margin:0;padding:0;min-height:100%;background:var(--paper);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  color:var(--ink);}
body{min-height:100vh; min-height:100dvh; padding-bottom:calc(76px + env(safe-area-inset-bottom));}
header.top{
  position:sticky; top:0; z-index:10;
  background:var(--brand-dark);
  border-bottom:3px solid var(--brand);
  padding:calc(14px + env(safe-area-inset-top)) 16px 12px;
}
header.top h1{margin:0; font-size:19px; letter-spacing:1.5px; font-weight:800; text-transform:uppercase; color:#fff;}
header.top .sub{color:rgba(255,255,255,0.75); font-size:12px; margin-top:2px;}
main{padding:14px 14px 8px; max-width:480px; margin:0 auto;}
.section-title{
  text-transform:uppercase; letter-spacing:1px; font-size:12px; color:var(--ink-dim);
  margin:18px 4px 8px; font-weight:700;
}
.card{background:var(--surface); border:1px solid var(--line); border-radius:10px; padding:14px; margin-bottom:8px;}
.card.status-in{border-color:var(--stamp-green); background:#EAF6EE;}
.card.status-out{border-color:var(--line);}
.row{display:flex; justify-content:space-between; align-items:flex-start; gap:10px;}
.item-meta{color:var(--ink-dim); font-size:12px; margin-top:3px;}
.helptext{color:var(--ink-dim); font-size:12px; line-height:1.5;}
button{font-family:inherit;}
.btn{
  background:var(--brand-dark); color:#fff; border:none; border-radius:8px;
  padding:13px 14px; font-size:14px; font-weight:700; cursor:pointer;
}
.btn.ghost{background:transparent; border:1px solid var(--ink-dim); color:var(--ink-dim);}
.btn.danger{background:var(--stamp-red);}
.btn.stack{display:block; width:100%; margin-top:10px; text-align:center; text-decoration:none;}
.btn.stack:first-child{margin-top:0;}
.btn:disabled{opacity:0.5; cursor:default;}
input,select,textarea{
  width:100%; background:#fff; border:1px solid var(--line);
  color:var(--ink); border-radius:7px; padding:11px 10px; font-size:15px; margin-top:6px;
  font-family:inherit;
}
textarea{min-height:70px; font-size:14px;}
label{font-size:11px; text-transform:uppercase; letter-spacing:0.5px; color:var(--ink-dim); display:block; margin-top:12px;}
.divider{height:1px; background:var(--line); margin:16px 0;}
.modal-bg{position:fixed; inset:0; background:rgba(20,40,40,0.45); z-index:50; display:flex; align-items:flex-end; justify-content:center;}
.modal{
  background:#fff; width:100%; max-width:480px; border-radius:16px 16px 0 0;
  padding:18px 16px calc(20px + env(safe-area-inset-bottom)); max-height:88vh; overflow-y:auto;
  border-top:3px solid var(--brand); position:relative;
}
.modal h2{margin:0 0 4px; font-size:17px; color:var(--ink);}
.modal .close{position:absolute; top:14px; right:16px; color:var(--ink-dim); font-size:22px; background:none; border:none;}
.activity-item{padding:9px 0; border-bottom:1px solid var(--line); font-size:13px;}
.activity-item:last-child{border-bottom:none;}
.activity-item .when{color:var(--ink-dim); font-size:11px; margin-top:2px;}
.file-preview{width:100%; max-height:220px; object-fit:contain; border-radius:8px; border:1px solid var(--line); margin-top:10px; display:block;}
.empty{color:var(--ink-dim); font-size:13px; padding:16px 4px; text-align:center;}
a{color:var(--brand-dark);}
.install-hint{border-color:var(--brand);}
.btn.small{padding:4px 10px; font-size:16px; line-height:1; flex-shrink:0;}
.radio-row{display:flex; gap:16px; margin-top:8px;}
.radio-opt{
  display:flex; align-items:center; gap:6px; font-size:14px;
  text-transform:none; letter-spacing:0; color:var(--ink); font-weight:400; margin-top:0;
}
.radio-opt input{width:auto; margin-top:0;}
.warning-box{
  margin-top:8px; padding:10px 12px; border-radius:8px; background:#FBEEE8; border:1px solid var(--stamp-red);
  color:var(--stamp-red); font-size:13px; line-height:1.5; font-weight:600;
}
.sig-canvas{
  width:100%; height:150px; border:1px solid var(--line); border-radius:8px; background:#fff; margin-top:6px;
  touch-action:none; display:block;
}
.sig-typed-input{font-family:"Snell Roundhand","Brush Script MT",cursive; font-size:26px; margin-top:6px;}
.sig-toggle{margin-top:6px; font-size:12px;}

nav.tabs{
  position:fixed; bottom:0; left:0; right:0; z-index:20;
  background:#fff; border-top:2px solid var(--line);
  display:flex; padding-bottom:env(safe-area-inset-bottom);
  box-shadow:0 -2px 10px rgba(0,0,0,0.05);
}
nav.tabs button{
  flex:1; min-width:0; background:none; border:none; color:var(--ink-dim);
  padding:10px 1px 8px; font-size:10.5px; font-weight:700; text-transform:uppercase; letter-spacing:0.2px;
  border-radius:10px; margin:5px 1px; transition:background 0.15s, color 0.15s; cursor:pointer;
}
nav.tabs button.active{color:var(--brand-dark); background:#E1EFEF;}
.tab-icon{display:block; font-size:17px; margin-bottom:2px;}
.tab-label{display:block; width:100%; white-space:nowrap; overflow:hidden; text-overflow:ellipsis;}

.chip-row{display:flex; flex-wrap:wrap; gap:8px; margin-top:6px;}
.chip-opt{
  display:flex; align-items:center; gap:5px; font-size:12px;
  text-transform:none; letter-spacing:0; color:var(--ink); font-weight:400; margin-top:0;
  background:#fff; border:1px solid var(--line); border-radius:20px; padding:6px 11px; cursor:pointer;
}
.chip-opt input{width:auto; margin-top:0;}
.row-select{display:flex; align-items:center; gap:6px; margin-bottom:8px; cursor:pointer;}
.row-select input{width:auto; margin-top:0;}
.card.excluded{opacity:0.4;}
.attachment-thumb{
  width:100%; max-height:260px; object-fit:contain; border-radius:8px; border:1px solid var(--line);
  margin-top:10px; display:block; background:#fff;
}
.signature-thumb{max-width:180px; max-height:70px; border:1px solid var(--line); border-radius:6px; margin-top:4px; background:#fff; display:block;}

@media print{
  header.top, nav.tabs, .no-print{display:none;}
  .card{break-inside:avoid; border-color:#999;}
  .card.excluded{display:none;}
  body{padding-bottom:0;}
}