:root{
  --green-950:#0a2e22;
  --green-900:#0b3d2e;
  --green-800:#124f3b;
  --green-700:#176249;
  --green-100:#e6f0ea;
  --green-50:#f4f9f6;
  --gold:#c9a227;
  --gold-dark:#a4831c;
  --ink:#1c2320;
  --ink-soft:#4b564f;
  --line:#d9e2dc;
  --line-soft:#e9efec;
  --card-bg:#ffffff;
  --page-bg:#eef2ef;
  --danger:#b3261e;
  --radius:10px;
  --shadow:0 1px 3px rgba(11,61,46,0.08), 0 1px 2px rgba(11,61,46,0.06);
  color-scheme:light;
}

*,*::before,*::after{box-sizing:border-box;}

[hidden]{display:none !important;}

html,body{
  margin:0;
  padding:0;
  background:var(--page-bg);
  color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  -webkit-text-size-adjust:100%;
}

body{
  padding-bottom:env(safe-area-inset-bottom);
}

h1,h2,h3,h4,p{margin:0;}

button{font-family:inherit;}

/* ---------- Header / Nav ---------- */
.app-header{
  position:sticky;
  top:0;
  z-index:20;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding:10px 14px;
  background:var(--green-900);
  color:#fff;
  padding-top:calc(10px + env(safe-area-inset-top));
}
.brand{display:flex;align-items:center;gap:10px;min-width:0;}
.brand-mark{
  width:36px;height:36px;flex:none;
  border-radius:8px;
  background:var(--gold);
  color:var(--green-950);
  display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:14px;letter-spacing:0.5px;
}
.brand-text{display:flex;flex-direction:column;min-width:0;}
.brand-title{font-weight:700;font-size:14px;line-height:1.2;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.brand-sub{font-size:11px;color:var(--green-100);opacity:0.85;}

.app-nav{display:flex;gap:6px;flex:none;}
.nav-btn{
  border:1px solid rgba(255,255,255,0.25);
  background:transparent;
  color:#fff;
  padding:8px 12px;
  border-radius:8px;
  font-size:13px;
  font-weight:600;
  cursor:pointer;
}
.nav-btn.active{background:var(--gold);color:var(--green-950);border-color:var(--gold);}

.device-banner{
  background:var(--green-100);
  color:var(--green-800);
  font-size:12px;
  text-align:center;
  padding:6px 10px;
  border-bottom:1px solid var(--line);
}

/* ---------- Layout ---------- */
#formView,#historyView{
  max-width:900px;
  margin:0 auto;
  padding:16px 12px 100px;
}

.doc-header{
  text-align:center;
  padding:18px 10px 14px;
}
.doc-header h1{
  font-size:22px;
  font-weight:800;
  letter-spacing:0.5px;
  color:var(--green-900);
}
.doc-header h2{
  font-size:13px;
  font-weight:700;
  letter-spacing:1.5px;
  color:var(--gold-dark);
  margin-top:4px;
}
.doc-header .subtitle{
  font-size:12px;
  color:var(--ink-soft);
  margin-top:2px;
}
.session-status{
  display:inline-block;
  margin-top:10px;
  font-size:12px;
  font-weight:600;
  color:var(--green-800);
  background:var(--green-100);
  border:1px solid var(--line);
  padding:4px 10px;
  border-radius:999px;
}

.card{
  background:var(--card-bg);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  padding:16px;
  margin-bottom:14px;
}

.card h3{
  font-size:15px;
  font-weight:700;
  color:var(--green-900);
  display:flex;
  align-items:center;
  gap:8px;
  margin-bottom:14px;
  padding-bottom:10px;
  border-bottom:2px solid var(--green-100);
}
.sec-num{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:22px;height:22px;
  border-radius:6px;
  background:var(--green-900);
  color:#fff;
  font-size:12px;
  flex:none;
}

.field-group{margin-bottom:14px;}
.field-group:last-child{margin-bottom:0;}

label{
  display:block;
  font-size:12.5px;
  font-weight:600;
  color:var(--ink-soft);
  margin-bottom:6px;
}
.label-sub{font-weight:400;color:#7a857e;font-size:11.5px;}

input[type="text"],
input[type="url"],
input[type="date"],
input[type="number"],
select,
textarea{
  width:100%;
  font-size:16px; /* prevents iOS Safari zoom */
  font-family:inherit;
  color:var(--ink);
  background:#fff;
  border:1px solid var(--line);
  border-radius:8px;
  padding:10px 11px;
  min-height:44px;
  -webkit-appearance:none;
  appearance:none;
}
textarea{
  min-height:unset;
  resize:vertical;
  line-height:1.4;
}
input:focus,select:focus,textarea:focus{
  outline:none;
  border-color:var(--green-700);
  box-shadow:0 0 0 3px rgba(23,98,73,0.15);
}

.grid{display:grid;gap:12px;}
.grid-2{grid-template-columns:1fr 1fr;}
.grid-3{grid-template-columns:1fr 1fr 1fr;}
.grid-4{grid-template-columns:1fr 1fr 1fr 1fr;}

@media (max-width:720px){
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr 1fr;}
}
@media (max-width:480px){
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr;}
}

.option-row{display:flex;flex-wrap:wrap;gap:8px;}
.chk{
  display:inline-flex;
  align-items:center;
  gap:7px;
  border:1px solid var(--line);
  border-radius:8px;
  padding:9px 12px;
  font-size:13.5px;
  font-weight:500;
  color:var(--ink);
  margin:0;
  cursor:pointer;
  min-height:44px;
  user-select:none;
}
.chk input{
  width:18px;height:18px;flex:none;accent-color:var(--green-800);
}
.chk:has(input:checked){
  background:var(--green-100);
  border-color:var(--green-700);
  color:var(--green-900);
  font-weight:700;
}

/* ---------- Tables (rating table) ---------- */
.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;}
table{width:100%;border-collapse:collapse;}
table th, table td{
  border:1px solid var(--line);
  padding:8px;
  text-align:left;
  font-size:13px;
}
table th{
  background:var(--green-50);
  color:var(--green-900);
  font-weight:700;
  font-size:12px;
  text-transform:uppercase;
  letter-spacing:0.4px;
}

/* ---------- Buttons ---------- */
.btn-primary,.btn-secondary,.btn-tertiary,.btn-danger{
  border-radius:9px;
  font-weight:700;
  font-size:14px;
  padding:12px 16px;
  min-height:46px;
  cursor:pointer;
  border:1px solid transparent;
}
.btn-primary{background:var(--green-900);color:#fff;}
.btn-primary:active{background:var(--green-950);}
.btn-secondary{background:#fff;color:var(--green-900);border-color:var(--green-700);}
.btn-secondary:active{background:var(--green-100);}
.btn-tertiary{background:transparent;color:var(--ink-soft);border-color:var(--line);}
.btn-danger{background:var(--danger);color:#fff;}
.btn-sm{padding:8px 12px;min-height:38px;font-size:12.5px;}

.action-bar{
  position:fixed;
  left:0;right:0;bottom:0;
  display:flex;
  gap:8px;
  padding:10px 12px calc(10px + env(safe-area-inset-bottom));
  background:rgba(255,255,255,0.96);
  border-top:1px solid var(--line);
  backdrop-filter:blur(6px);
  z-index:15;
}
.action-bar button{flex:1;}

/* ---------- Diagram ---------- */
.diagram-toolbar{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  margin-bottom:8px;
}
.tool-label{font-size:12px;color:var(--ink-soft);font-weight:600;}
.color-swatches{display:flex;gap:6px;}
.swatch{
  width:28px;height:28px;border-radius:50%;
  border:2px solid transparent;cursor:pointer;padding:0;
}
.swatch.active{border-color:var(--ink);box-shadow:0 0 0 2px #fff inset;}
.diagram-canvas-wrap{
  border:1px solid var(--line);
  border-radius:8px;
  overflow:hidden;
  background:#fbfbf9;
  touch-action:none;
}
#diagramCanvas{
  display:block;
  width:100%;
  height:280px;
  background-image:
    linear-gradient(#e3ece6 1px, transparent 1px),
    linear-gradient(90deg, #e3ece6 1px, transparent 1px);
  background-size:20px 20px;
  touch-action:none;
}

/* ---------- Media uploads ---------- */
.media-upload{margin-bottom:8px;}
.media-upload input[type="file"]{
  width:100%;
  font-size:13px;
  border:1px dashed var(--line);
  border-radius:8px;
  padding:10px;
  background:#fbfbf9;
}
.hint-text{font-size:12px;color:#7a857e;margin-top:-2px;}
.thumb-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(84px,1fr));
  gap:8px;
}
.thumb{
  position:relative;
  border-radius:8px;
  overflow:hidden;
  border:1px solid var(--line);
  aspect-ratio:1/1;
  background:#f4f4f2;
}
.thumb img{width:100%;height:100%;object-fit:cover;display:block;}
.thumb-remove{
  position:absolute;top:3px;right:3px;
  width:22px;height:22px;
  border-radius:50%;
  border:none;
  background:rgba(0,0,0,0.6);
  color:#fff;
  font-size:13px;
  line-height:1;
  cursor:pointer;
}
.thumb img{cursor:zoom-in;}

/* ---------- Link/Media attachments ---------- */
.attach-control{margin-bottom:10px;}
.attach-btn{
  display:inline-flex;
  align-items:center;
  gap:6px;
  cursor:pointer;
  margin-bottom:0;
  width:auto;
}
.attachment-list{
  display:flex;
  flex-direction:column;
  gap:8px;
}
.attach-item{
  display:flex;
  align-items:center;
  gap:10px;
  border:1px solid var(--line);
  border-radius:8px;
  padding:8px 10px;
  background:#fbfbf9;
}
.attach-thumb{
  width:44px;height:44px;
  flex:none;
  border-radius:6px;
  overflow:hidden;
  background:var(--green-50);
  cursor:pointer;
}
.attach-thumb img{width:100%;height:100%;object-fit:cover;display:block;cursor:zoom-in;}
.attach-file-icon{
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:10px;
  font-weight:800;
  color:var(--green-800);
  letter-spacing:0.3px;
}
.attach-name{
  flex:1;
  min-width:0;
  font-size:13px;
  color:var(--ink);
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.attach-remove{
  flex:none;
  width:32px;height:32px;
  border-radius:6px;
  border:none;
  background:none;
  color:var(--danger);
  font-size:18px;
  cursor:pointer;
}
.attach-remove:hover{background:#fdecea;}

/* ---------- Image preview lightbox ---------- */
.image-preview-overlay{
  background:rgba(8,14,11,0.9);
  padding:24px;
}
.image-preview-overlay img{
  max-width:92vw;
  max-height:88vh;
  border-radius:8px;
  box-shadow:0 10px 40px rgba(0,0,0,0.5);
  display:block;
}
.image-preview-close{
  position:absolute;
  top:18px;right:18px;
  width:40px;height:40px;
  border-radius:50%;
  border:none;
  background:rgba(255,255,255,0.15);
  color:#fff;
  font-size:22px;
  line-height:1;
  cursor:pointer;
}

/* ---------- Rating ---------- */
.rating-table td{vertical-align:middle;}
.rating-cell{padding:6px 8px;}
.rating-group{display:flex;gap:6px;}
.rating-btn{
  width:36px;height:36px;
  border-radius:7px;
  border:1px solid var(--line);
  background:#fff;
  font-weight:700;
  font-size:13px;
  color:var(--ink-soft);
  cursor:pointer;
}
.rating-btn.selected{
  background:var(--green-900);
  border-color:var(--green-900);
  color:#fff;
}

/* ---------- Sign-off ---------- */
.signoff-grid{margin-top:4px;}
.signoff-block{
  border:1px solid var(--line);
  border-radius:8px;
  padding:12px;
  background:var(--green-50);
}
.signoff-role{
  font-size:12.5px;
  font-weight:700;
  color:var(--green-900);
  margin-bottom:8px;
}
.signoff-block input{margin-bottom:8px;background:#fff;}
.signoff-block input:last-child{margin-bottom:0;}

/* ---------- Footer ---------- */
.doc-footer{
  text-align:center;
  font-size:11px;
  color:#8a938c;
  padding:14px 10px 4px;
}

/* ---------- History ---------- */
.history-empty{
  text-align:center;
  color:var(--ink-soft);
  padding:40px 20px;
  font-size:14px;
}
.history-list{display:flex;flex-direction:column;gap:10px;}
.history-card{
  background:var(--card-bg);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  padding:14px;
  display:flex;
  align-items:center;
  gap:12px;
}
.history-info{flex:1;min-width:0;}
.history-title{font-weight:700;color:var(--green-900);font-size:14.5px;}
.history-meta{font-size:12px;color:var(--ink-soft);margin-top:3px;}
.history-tags{display:flex;gap:6px;margin-top:6px;flex-wrap:wrap;}
.history-tag{
  font-size:10.5px;
  font-weight:700;
  background:var(--green-100);
  color:var(--green-800);
  padding:2px 7px;
  border-radius:999px;
}
.history-actions{display:flex;flex-direction:column;gap:6px;flex:none;}
.history-actions button{white-space:nowrap;}

/* ---------- Overlay / Toast ---------- */
.overlay{
  position:fixed;inset:0;
  background:rgba(10,20,15,0.5);
  display:flex;align-items:center;justify-content:center;
  z-index:50;
  padding:20px;
}
.overlay-box{
  background:#fff;
  border-radius:12px;
  padding:20px;
  max-width:320px;
  width:100%;
  box-shadow:0 10px 30px rgba(0,0,0,0.25);
}
.overlay-box p{font-size:14px;color:var(--ink);margin-bottom:16px;line-height:1.4;}
.overlay-actions{display:flex;gap:8px;justify-content:flex-end;}
.overlay-actions button{flex:1;}

.toast{
  position:fixed;
  left:50%;
  bottom:90px;
  transform:translateX(-50%);
  background:var(--green-950);
  color:#fff;
  font-size:13px;
  font-weight:600;
  padding:10px 18px;
  border-radius:999px;
  z-index:60;
  box-shadow:0 4px 14px rgba(0,0,0,0.25);
  max-width:90vw;
  text-align:center;
}

/* ---------- Print-root hidden on screen ---------- */
#print-root{display:none;}