:root{
  --bg:#070909;
  --panel:#0e1212;
  --panel-2:#121717;
  --panel-3:#171d1d;
  --cyan:#19cfe1;
  --green:#19df88;
  --white:#ffffff;
  --text:#d7dddd;
  --muted:#8f9999;
  --border:#252d2d;
  --dark:#061012;
}

*{box-sizing:border-box}

html,body{
  margin:0;
  min-height:100%;
  background:var(--bg);
  color:var(--white);
  font-family:Arial,Helvetica,sans-serif;
}

button,input,textarea,select{font:inherit}

button{cursor:pointer}

.app{
  min-height:100vh;
  display:grid;
  grid-template-columns:minmax(0,1.3fr) minmax(360px,.7fr);
}

.preview-area{
  min-width:0;
  padding:30px;
}

.preview-header{
  display:flex;
  justify-content:space-between;
  align-items:flex-end;
  gap:20px;
  margin-bottom:22px;
}

.eyebrow{
  display:block;
  margin-bottom:7px;
  color:var(--cyan);
  font-size:11px;
  font-weight:900;
  letter-spacing:1.6px;
}

.preview-header h1,
.controls-heading h2{
  margin:0;
  font-size:24px;
  letter-spacing:-.6px;
}

.a4-label{
  color:var(--muted);
  font-size:11px;
  font-weight:800;
  letter-spacing:1.2px;
}

.canvas-stage{
  display:flex;
  justify-content:center;
  align-items:flex-start;
}

#previewCanvas{
  display:block;
  width:min(100%,650px);
  height:auto;
  background:#070909;
  border-radius:16px;
  box-shadow:0 24px 80px rgba(0,0,0,.35);
}

.controls{
  height:100vh;
  overflow:auto;
  padding:34px;
  background:var(--panel);
  border-left:1px solid var(--border);
}

.controls-heading{
  margin-bottom:22px;
}

.controls-heading p{
  margin:10px 0 0;
  color:var(--muted);
  font-size:13px;
  line-height:1.55;
}

.control-block{
  margin-bottom:16px;
}

.field,
.control-block{
  display:grid;
  gap:8px;
}

.field>span,
.field-label,
.range-heading{
  color:#d1d6d6;
  font-size:12px;
  font-weight:800;
}

input,
textarea,
select{
  width:100%;
  border:1px solid var(--border);
  border-radius:11px;
  outline:none;
  background:var(--panel-2);
  color:var(--white);
  padding:12px 13px;
  transition:border-color .15s ease,background .15s ease;
}

input:focus,
textarea:focus,
select:focus{
  border-color:var(--cyan);
  background:var(--panel-3);
}

textarea{
  resize:vertical;
  min-height:116px;
  line-height:1.5;
}

.upload-box{
  min-height:92px;
  padding:16px;
  border:1px dashed #344040;
  border-radius:13px;
  background:var(--panel-2);
  display:flex;
  align-items:center;
  gap:14px;
  cursor:pointer;
  transition:.15s ease;
}

.upload-box:hover{
  border-color:var(--cyan);
  background:var(--panel-3);
}

.upload-icon{
  width:42px;
  height:42px;
  flex:0 0 auto;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:12px;
  background:#0b1a1c;
  color:var(--cyan);
  font-size:24px;
  font-weight:400;
}

.upload-box strong{
  display:block;
  margin-bottom:4px;
  font-size:13px;
}

.upload-box span{
  color:var(--muted);
  font-size:11px;
}

.hidden-input{display:none}

.logo-actions{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:15px;
  color:var(--muted);
  font-size:11px;
}

.logo-actions span{
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}

.text-button{
  padding:0;
  border:0;
  background:none;
  color:var(--cyan);
  font-size:11px;
  font-weight:800;
}

.text-button:disabled{
  color:#526060;
  cursor:default;
}

.range-heading{
  display:flex;
  justify-content:space-between;
  gap:20px;
  align-items:center;
}

.range-heading strong{
  color:var(--cyan);
}

.range{
  width:100%;
  accent-color:var(--cyan);
}

.color-row{
  display:grid;
  grid-template-columns:56px 1fr;
  gap:10px;
}

.color-picker{
  height:46px;
  padding:4px;
  cursor:pointer;
}

.hex-input{
  text-transform:uppercase;
}

small{
  color:var(--muted);
  font-size:11px;
  line-height:1.4;
}

.primary-button{
  width:100%;
  min-height:58px;
  border:0;
  border-radius:12px;
  background:var(--cyan);
  color:var(--dark);
  font-size:15px;
  font-weight:900;
}

.primary-button:hover{
  filter:brightness(1.04);
}

.privacy-note{
  margin:13px 0 0;
  color:var(--muted);
  font-size:10px;
  line-height:1.5;
  text-align:center;
}

@media(max-width:1000px){
  .app{grid-template-columns:1fr}

  .controls{
    height:auto;
    overflow:visible;
    border-left:0;
    border-top:1px solid var(--border);
  }
}

@media(max-width:620px){
  .preview-area,
  .controls{
    padding:22px;
  }

  .preview-header{
    align-items:center;
  }

  .preview-header h1,
  .controls-heading h2{
    font-size:20px;
  }

  #previewCanvas{
    width:100%;
    border-radius:13px;
  }
}


.filename-row{
  display:grid;
  grid-template-columns:1fr auto;
  gap:8px;
  align-items:stretch;
}

.filename-row input{
  min-width:0;
}

.pdf-suffix{
  min-width:58px;
  padding:0 14px;
  border:1px solid var(--border);
  border-radius:11px;
  background:var(--panel-2);
  color:var(--cyan);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:12px;
  font-weight:900;
}