*{
  margin:0;
  padding:0;
  box-sizing:border-box;
}

body{
  min-height:100vh;
  font-family:'Segoe UI',sans-serif;

  background:
  radial-gradient(circle at left bottom,#1d4ed8 0%,transparent 25%),
  radial-gradient(circle at right bottom,#7e22ce 0%,transparent 25%),
  linear-gradient(135deg,#020617,#030b2f,#020617);

  color:#fff;

  padding:16px;
}

/* =====================
   HEADER
===================== */

.header{
  display:flex;
  justify-content:space-between;
  align-items:center;

  margin-bottom:40px;
}

.brand{
  display:flex;
  align-items:center;
  gap:12px;
}

.brand-icon{
  font-size:34px;
  color:#a855f7;
}

.brand-name{
  font-size:22px;
  font-weight:700;
}

.version-badge{
  border:1px solid rgba(255,255,255,.15);

  padding:14px 18px;

  border-radius:14px;

  color:#d1d5db;

  backdrop-filter:blur(10px);
}

/* =====================
   HERO
===================== */

.hero{
  text-align:center;

  margin-bottom:30px;
}

.hero h1{
  font-size:58px;
  font-weight:800;

  margin-bottom:16px;

  line-height:1.1;
}

.hero h1 span{

  background:
  linear-gradient(
    90deg,
    #60a5fa,
    #c084fc
  );

  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
}

.hero p{
  font-size:20px;
  color:#cbd5e1;
}

/* =====================
   MAIN CARD
===================== */

.generator-card{

  max-width:1050px;

  margin:auto;

  display:grid;

  grid-template-columns:1fr 1fr;

  border-radius:24px;

  overflow:hidden;

  box-shadow:
  0 30px 80px rgba(0,0,0,.45);
}

/* =====================
   LEFT PANEL
===================== */

.left-panel{

  padding:38px;

  background:
  linear-gradient(
    135deg,
    rgba(7,16,40,.96),
    rgba(13,24,53,.96)
  );
}

.section-title,
.options-title{

  display:flex;
  align-items:center;

  gap:14px;

  margin-bottom:20px;
}

.options-title{
  margin-top:30px;
}

.section-icon{
  color:#a855f7;
  font-size:28px;
}

.blue{
  color:#4f7cff;
}

.section-title h2,
.options-title h2{
  font-size:18px;
  font-weight:700;
}

.textarea-wrapper{
  position:relative;
}

#qrInput{

  width:100%;
  height:180px;

  resize:none;

  border-radius:16px;

  border:2px solid #8b5cf6;

  background:
  rgba(0,0,0,.18);

  color:white;

  font-size:18px;

  padding:20px;

  outline:none;
}

.counter{

  position:absolute;

  right:18px;
  bottom:16px;

  color:#d1d5db;
}

.options-row{

  display:grid;

  grid-template-columns:1fr 1fr;

  gap:16px;

  margin-top:20px;
}

.option-box label{

  display:block;

  margin-bottom:10px;

  color:#e5e7eb;
}

.option-box select{

  width:100%;

  padding:16px;

  border-radius:12px;

  border:1px solid rgba(255,255,255,.15);

  background:#09101f;

  color:white;

  font-size:16px;
}

#generateBtn{

  width:100%;

  margin-top:32px;

  border:none;

  border-radius:16px;

  padding:20px;

  font-size:22px;

  font-weight:700;

  color:white;

  cursor:pointer;

  background:
  linear-gradient(
    90deg,
    #4f7cff,
    #c026d3
  );
}

#generateBtn:hover{
  transform:translateY(-2px);
}

/* =====================
   RIGHT PANEL
===================== */

.right-panel{

  background:#f8fafc;

  color:#111827;

  padding:38px;
}

.qr-topbar{

  display:flex;
  justify-content:space-between;
  align-items:center;

  margin-bottom:30px;
}

#clearBtn{

  border:1px solid #fecaca;

  background:white;

  color:#ef4444;

  padding:12px 18px;

  border-radius:12px;

  cursor:pointer;

  font-weight:600;
}

.qr-preview-card{

  width:320px;
  height:320px;

  margin:auto;

  background:#ffffff;

  border-radius:18px;

  display:flex;
  justify-content:center;
  align-items:center;

  box-shadow:
  0 10px 25px rgba(0,0,0,.08);
}

#placeholderText{

  color:#94a3b8;

  font-size:18px;

  font-weight:600;

  text-align:center;

  line-height:1.6;

  max-width:180px;

  letter-spacing:0.3px;
}

#qrImage{

  width:90%;

  max-width:290px;

  display:none;
}

.action-row{

  display:flex;

  gap:16px;

  margin-top:35px;
}

#downloadBtn,
#copyBtn{

  flex:1;

  border:none;

  border-radius:14px;

  padding:18px;

  font-size:17px;

  font-weight:700;

  cursor:pointer;
}

#downloadBtn{

  color:white;

  background:
  linear-gradient(
    90deg,
    #5b4bff,
    #8b5cf6
  );
}

#copyBtn{

  background:white;

  border:1px solid #d1d5db;

  color:#111827;
}

.tip{

  margin-top:24px;

  color:#6b7280;

  font-size:15px;
}

/* =====================
   FOOTER
===================== */

footer{

  text-align:center;

  margin-top:25px;

  color:#d1d5db;
}

footer span{
  color:#a855f7;
}

/* =====================
   MOBILE
===================== */

@media(max-width:1000px){

  .generator-card{
    grid-template-columns:1fr;
  }

  .hero h1{
    font-size:48px;
  }

  .options-row{
    grid-template-columns:1fr;
  }

  .qr-preview-card{
    width:100%;
    max-width:320px;
  }

  .action-row{
    flex-direction:column;
  }
}