:root{
  --bg: #eef1f5;
  --card: rgba(255,255,255,.92);
  --card2: rgba(255,255,255,.98);
  --text: rgba(20,24,32,.92);
  --muted: rgba(20,24,32,.64);
  --muted2: rgba(20,24,32,.52);
  --border: rgba(20,24,32,.12);
  --shadow: 0 20px 70px rgba(20,24,32,.12);
  --primary: #6d5cff;
  --primary2: #22c4b5;
  --danger: #d33a3a;
  --radius: 16px;
  --radius2: 12px;
  --focus: 0 0 0 3px rgba(109,92,255,.25);
  --font: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Apple Color Emoji","Segoe UI Emoji";
}

*{ box-sizing:border-box; }
html, body{ height:100%; }
body{
  margin:0;
  font-family: var(--font);
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 20% 10%, rgba(109,92,255,.14), transparent 60%),
    radial-gradient(900px 500px at 90% 30%, rgba(34,196,181,.12), transparent 55%),
    radial-gradient(800px 500px at 40% 100%, rgba(255,255,255,.55), transparent 58%),
    var(--bg);
}

.topbar{
  position: sticky;
  top: 0;
  z-index: 10;
  padding: 18px 22px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  border-bottom: 1px solid rgba(20,24,32,.08);
  backdrop-filter: blur(10px);
  background: rgba(238,241,245,.7);
}
.brand{
  display:flex;
  align-items:center;
  gap: 12px;
}
.logo{
  width: 40px; height: 40px;
  display:grid; place-items:center;
  font-weight: 800;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(124,92,255,.9), rgba(79,209,197,.75));
  box-shadow: 0 12px 30px rgba(124,92,255,.25);
}
.brand__name{ font-weight: 750; letter-spacing: .2px; }
.brand__tag{ font-size: 12px; color: var(--muted); margin-top: 2px; }

.shell{ padding: 26px 22px 44px; max-width: 1160px; margin: 0 auto; }
.card{
  display:block;
}
.dot{
  width: 12px;
  height: 12px;
  aspect-ratio: 1 / 1;
  flex: 0 0 12px;
  display: inline-block;
  border-radius: 999px;
  border: 1px solid rgba(20,24,32,.22);
  margin-top: 3px;
  background: rgba(20,24,32,.06);
}
.dot--active{
  background: linear-gradient(135deg, var(--primary), var(--primary2));
  border-color: transparent;
  box-shadow: 0 0 0 4px rgba(109,92,255,.14);
}
.step__title{ font-weight: 650; }
.step__desc{ color: var(--muted); font-size: 13px; margin-top: 4px; line-height: 1.35; }

.work .panel{
  border: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(255,255,255,.92), rgba(255,255,255,.82));
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: clip;
}
.panel__header{
  display:flex;
  align-items:flex-start;
  justify-content: space-between;
  gap: 12px;
  padding: 18px 18px 14px;
  border-bottom: 1px solid rgba(20,24,32,.08);
}
.panel__title{ font-size: 18px; font-weight: 760; }
.panel__subtitle{ color: var(--muted); font-size: 13px; margin-top: 4px; }
.panel__headerRight{ display:flex; gap: 10px; align-items:center; }
.pill{
  border: 1px solid rgba(20,24,32,.12);
  background: rgba(20,24,32,.04);
  color: rgba(20,24,32,.72);
  padding: 8px 10px;
  border-radius: 999px;
  font-size: 12px;
}

.stage{ padding: 18px; }
.stage__pane{ display:block; }
.is-hidden{ display:none !important; }

.sigControls{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.sigControls__row{
  display:flex;
  align-items:center;
  gap: 12px;
  flex-wrap: wrap;
}
.field{ display:flex; flex-direction:column; gap: 6px; min-width: 240px;}
.field--inline{ min-width: auto; }
.field__label{ font-size: 12px; color: var(--muted); }
.input{
  height: 40px;
  padding: 0 12px;
  border-radius: 12px;
  border: 1px solid rgba(20,24,32,.14);
  background: rgba(255,255,255,.72);
  color: var(--text);
  outline: none;
}
.select{
  height: 40px;
  padding: 0 12px;
  border-radius: 12px;
  border: 1px solid rgba(20,24,32,.14);
  background: rgba(255,255,255,.72);
  color: var(--text);
  outline: none;
}
.select:focus{ box-shadow: var(--focus); border-color: rgba(109,92,255,.55); }
input[type="checkbox"]{
  width: 18px;
  height: 18px;
  accent-color: var(--primary);
}
.input:focus{ box-shadow: var(--focus); border-color: rgba(109,92,255,.55); }
input[type="range"]{ width: 160px; }

.sigBoxWrap{ margin-top: 14px; }
.sigHint{
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 10px;
}
.kbd{
  display:inline-block;
  padding: 2px 7px;
  border-radius: 8px;
  border: 1px solid rgba(20,24,32,.14);
  background: rgba(255,255,255,.9);
  color: rgba(20,24,32,.82);
  font-size: 12px;
}
.sigCanvas{
  width: 100%;
  height: 240px;
  border-radius: var(--radius2);
  border: 1px dashed rgba(20,24,32,.22);
  background:
    linear-gradient(180deg, rgba(255,255,255,.98), rgba(255,255,255,.92));
  outline: none;
  cursor: crosshair;
  touch-action: none;
}
.sigCanvas:focus{ box-shadow: var(--focus); border-color: rgba(109,92,255,.55); }

.sigFooter{
  margin-top: 14px;
  display:flex;
  align-items:center;
  justify-content: space-between;
  gap: 12px;
}
.sigFooter__left{
  display:flex;
  align-items:center;
  gap: 12px;
  flex-wrap: wrap;
}
.sigFooter__right{
  display:flex;
  align-items:center;
  justify-content:flex-end;
}
.colorInput{
  /* keep the real color input for native picker, but hide it visually */
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.btn--color{
  display:inline-flex;
  align-items:center;
  gap: 10px;
}
.btnColor__label{ font-weight: 650; }
.btnColor__swatch{
  width: 18px;
  height: 18px;
  border-radius: 8px;
  border: 1px solid rgba(20,24,32,.18);
  background: #111111;
  box-shadow: inset 0 0 0 2px rgba(255,255,255,.55);
}
.error{
  color: rgba(255,107,107,.95);
  font-size: 13px;
  min-height: 18px;
}
.hint{
  color: var(--muted);
  font-size: 13px;
  margin-top: 12px;
}

.btn{
  height: 40px;
  padding: 0 14px;
  border-radius: 12px;
  border: 1px solid rgba(20,24,32,.14);
  background: rgba(255,255,255,.72);
  color: var(--text);
  cursor:pointer;
  font-weight: 650;
  letter-spacing: .1px;
  font-size: 14px;
}
.btn--sm{
  height: 32px;
  padding: 0 10px;
  border-radius: 10px;
  font-size: inherit;
}
.pdfPager{
  display:flex;
  align-items:center;
  gap: 10px;
}
.pdfPageLabel{
  min-width: 72px;
  text-align:center;
  color: var(--muted);
  font-size: 13px;
}
.btn:hover{ background: rgba(255,255,255,.92); }
.btn:active{ transform: translateY(1px); }
.btn:focus{ outline:none; box-shadow: var(--focus); }
.btn--ghost{ background: transparent; }
.btn--primary{
  border-color: transparent;
  background: linear-gradient(135deg, rgba(124,92,255,.95), rgba(79,209,197,.8));
  box-shadow: 0 14px 40px rgba(109,92,255,.18);
}
.btn--primary:hover{ filter: brightness(1.03); }

.uploadTop, .placeTop{
  display:flex;
  align-items:center;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}
.summaryLine{ display:flex; gap: 10px; align-items:center; margin: 4px 0; }
.summaryLabel{ color: var(--muted2); font-size: 12px; min-width: 72px; }
.summaryValue{ color: var(--text); font-size: 13px; }

.uploadBox{
  border: 1px dashed rgba(20,24,32,.22);
  border-radius: var(--radius2);
  padding: 16px;
  background: rgba(255,255,255,.72);
}
.uploadBox input[type="file"]{
  width: 100%;
  padding: 12px;
  border-radius: 12px;
  border: 1px solid rgba(20,24,32,.14);
  background: rgba(255,255,255,.9);
  color: rgba(20,24,32,.65);
}
.uploadHelp{ margin-top: 12px; }
.uploadHelp__title{ font-weight: 720; }
.uploadHelp__desc{ margin-top: 6px; color: var(--muted); font-size: 13px; line-height: 1.35; }

.docStage{
  position: relative;
  border-radius: var(--radius2);
  border: 1px solid rgba(20,24,32,.14);
  background: rgba(255,255,255,.75);
  overflow: hidden;
}
.docViewport{
  position: relative;
  width: 100%;
  height: min(72vh, 720px);
  overflow: auto;
  display:block;
}
.docViewport canvas{
  display:block;
}
.docViewport embed, .docViewport iframe{
  width: 100%;
  height: 100%;
  border: 0;
  background: white;
}

.sigBox{
  position:absolute;
  left: 26px;
  top: 26px;
  width: 220px;
  height: 90px;
  overflow: visible;
  user-select: none;
  touch-action: none;
  cursor: grab;
}
.sigBox:active{ cursor: grabbing; }
.sigBox.is-hidden{ display:none; }

.sigBox .sigHandle{ display:none; }
.sigBox.sigBox--selected .sigHandle{ display:block; }

.sigRotator{
  position:absolute;
  inset: 0;
  transform-origin: 50% 50%;
}

.sigDeleteBtn{
  position: absolute;
  right: -12px;
  top: -12px;
  width: 30px;
  height: 30px;
  border-radius: 12px;
  border: 1px solid rgba(20,24,32,.14);
  background: rgba(255,255,255,.92);
  color: rgba(20,24,32,.78);
  display: none;
  cursor: pointer;
  box-shadow: 0 10px 20px rgba(20,24,32,.14);
}
.sigDeleteBtn:hover{
  background: rgba(255,255,255,1);
  color: rgba(20,24,32,.92);
}
.sigDeleteBtn:active{ transform: translateY(1px); }
.sigDeleteBtn:focus{ outline: none; box-shadow: var(--focus); }
.sigBox.sigBox--selected .sigDeleteBtn{ display: grid; place-items: center; }

.sigFrame{
  position:absolute;
  inset: 0;
  border-radius: 10px;
  border: 1px solid rgba(109,92,255,.35);
  background: rgba(255,255,255,0);
  box-shadow: 0 12px 26px rgba(20,24,32,.12);
}
.sigBox--selected .sigFrame{
  border-color: rgba(109,92,255,.7);
  box-shadow: 0 16px 36px rgba(109,92,255,.15), 0 12px 26px rgba(20,24,32,.12);
}

.sigImg{
  position:absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  user-select: none;
  -webkit-user-drag: none;
  pointer-events: none;
}

.sigHandle{
  position:absolute;
  width: 14px;
  height: 14px;
  border-radius: 6px;
  background: rgba(109,92,255,.95);
  box-shadow: 0 10px 20px rgba(20,24,32,.18);
}
.sigHandle--rotate{
  left: 50%;
  top: -22px;
  transform: translateX(-50%);
  width: 16px;
  height: 16px;
  border-radius: 999px;
  cursor: grab;
}
.sigHandle--rotate::after{
  content:"";
  position:absolute;
  left: 50%;
  top: 16px;
  width: 2px;
  height: 14px;
  transform: translateX(-50%);
  background: rgba(109,92,255,.65);
  border-radius: 2px;
}
.sigHandle--resize{
  right: -7px;
  bottom: -7px;
  cursor: nwse-resize;
}

.footerNote{
  padding: 14px 18px 18px;
  color: rgba(20,24,32,.55);
  font-size: 12px;
  border-top: 1px solid rgba(20,24,32,.08);
}

@media (max-width: 980px){
  .field{ min-width: 100%; }
  input[type="range"]{ width: 180px; }
}