:root{
  --bg:#0f172a;
  --bg-soft:#f8fafc;
  --card:#ffffff;
  --text:#0f172a;
  --muted:#475569;
  --line:#e2e8f0;
  --accent:#2563eb;
  --accent-dark:#1d4ed8;
  --success:#16a34a;
  --shadow:0 15px 40px rgba(15,23,42,.08);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:Arial, Helvetica, sans-serif;
  color:var(--text);
  background:#fff;
  line-height:1.55;
}
.wrap{
  width:min(1120px, calc(100% - 32px));
  margin:0 auto;
}
.hero{
  background:linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  color:#fff;
  padding:24px 0 72px;
}
.nav{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:20px;
}
.logo{
  font-size:24px;
  font-weight:700;
}
.nav-links{
  display:flex;
  gap:18px;
  flex-wrap:wrap;
}
.nav-links a{
  color:#dbeafe;
  text-decoration:none;
  font-weight:600;
}
.hero-content{
  padding:72px 0 20px;
}
.hero-text{
  max-width:760px;
}
.hero h1{
  margin:0 0 16px;
  font-size:52px;
  line-height:1.08;
}
.hero p{
  margin:0 0 24px;
  font-size:18px;
  color:#cbd5e1;
}
.hero-btn{
  display:inline-block;
  background:#fff;
  color:var(--accent-dark);
  text-decoration:none;
  font-weight:700;
  padding:14px 22px;
  border-radius:12px;
}
.features{
  background:var(--bg-soft);
  padding:48px 0;
}
.feature-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:20px;
}
.feature-card,
.quote-card,
.about-card,
.contact-card,
.viewer-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:18px;
  box-shadow:var(--shadow);
}
.feature-card{
  padding:24px;
}
.quote-section,
.about-section,
.contact-section{
  padding:72px 0;
}
.section-heading{
  margin-bottom:28px;
}
.section-heading h2,
.about-section h2{
  margin:0 0 10px;
  font-size:36px;
}
.section-heading p{
  margin:0;
  color:var(--muted);
}
.quote-card{
  display:grid;
  grid-template-columns:1.2fr .8fr;
  gap:24px;
  padding:24px;
}
.form-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:18px;
  margin-bottom:24px;
}
.field{
  display:flex;
  flex-direction:column;
}
.field.full{
  grid-column:1 / -1;
}
label{
  font-weight:700;
  margin-bottom:8px;
}
input, select, textarea{
  width:100%;
  padding:14px 14px;
  border:1px solid #cbd5e1;
  border-radius:12px;
  font-size:15px;
  outline:none;
  background:#fff;
}
input:focus, select:focus, textarea:focus{
  border-color:var(--accent);
}
small{
  margin-top:8px;
  color:var(--muted);
}
button{
  border:none;
  border-radius:12px;
  padding:14px 18px;
  font-size:15px;
  font-weight:700;
  background:var(--accent);
  color:#fff;
  cursor:pointer;
}
button:hover{
  background:var(--accent-dark);
}
.drop-zone{
  position:relative;
  border:2px dashed #94a3b8;
  background:#f8fafc;
  border-radius:18px;
  min-height:150px;
  display:flex;
  align-items:center;
  justify-content:center;
  text-align:center;
  padding:20px;
  transition:.2s ease;
  overflow:hidden;
}
.drop-zone.dragover{
  border-color:var(--accent);
  background:#eff6ff;
}
.drop-zone input[type="file"]{
  position:absolute;
  inset:0;
  opacity:0;
  cursor:pointer;
}
.drop-content{
  display:flex;
  flex-direction:column;
  gap:6px;
  align-items:center;
}
.viewer-card{
  padding:18px;
}
.viewer-header{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:12px;
  margin-bottom:12px;
}
.viewer-header h3{
  margin:0;
}
#viewerStatus{
  color:var(--muted);
  font-size:14px;
}
#viewer{
  width:100%;
  height:420px;
  background:linear-gradient(180deg, #eef2ff 0%, #f8fafc 100%);
  border:1px solid var(--line);
  border-radius:16px;
  overflow:hidden;
  position:relative;
}
.viewer-note{
  margin:10px 0 0;
  color:var(--muted);
  font-size:14px;
}
.result-box{
  background:#f8fafc;
  border:1px solid var(--line);
  border-radius:16px;
  padding:20px;
}
.result-box h3{
  margin-top:0;
}
.result-row{
  display:flex;
  justify-content:space-between;
  gap:12px;
  padding:10px 0;
  border-bottom:1px solid var(--line);
}
.result-row.total{
  font-size:20px;
  border-bottom:none;
  padding-top:16px;
}
.about-grid,
.contact-grid{
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:24px;
  align-items:start;
}
.about-card,
.contact-card{
  padding:24px;
}
.about-card ul{
  margin:0;
  padding-left:18px;
}
.contact-form{
  display:grid;
  gap:14px;
}
#formStatus.success{
  color:var(--success);
}
.footer{
  background:#0f172a;
  color:#cbd5e1;
  padding:24px 0;
  text-align:center;
}
@media (max-width: 900px){
  .feature-grid,
  .quote-card,
  .about-grid,
  .contact-grid{
    grid-template-columns:1fr;
  }
  .hero h1{
    font-size:38px;
  }
}
@media (max-width: 640px){
  .nav{
    flex-direction:column;
    align-items:flex-start;
  }
  .form-grid{
    grid-template-columns:1fr;
  }
  .hero h1{
    font-size:32px;
  }
  .section-heading h2,
  .about-section h2{
    font-size:28px;
  }
  #viewer{
    height:320px;
  }
}