@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

.futuron-sig-shell{
  --ink:#0f1b38;
  --ink-2:#1f4d73;
  --teal:#2f7a8a;
  --teal-2:#58aaba;
  --muted:#556170;
  --border:#d3e3ed;
  --panel:#f6fbff;
  --bg:#eef3f7;
  --radius:14px;
  --shadow:0 18px 38px rgba(10,35,64,0.12);
  margin:0 calc(50% - 50vw);
  width:100vw;
  max-width:100vw;
  font-family:"Inter","Segoe UI","IBM Plex Sans",-apple-system,system-ui,sans-serif;
  color:var(--ink);
  line-height:1.6;
  min-height:60vh;
  padding:28px 18px 80px;
  background:
    radial-gradient(1200px 900px at 16% 12%, rgba(46,168,194,0.22), transparent 55%),
    radial-gradient(1600px 1100px at 82% 10%, rgba(15,27,56,0.16), transparent 60%),
    linear-gradient(180deg, #f1f7fa 0%, #e6f1f7 52%, #dcebf3 100%);
  box-sizing:border-box;
}
.futuron-sig-shell *{box-sizing:border-box;}
.futuron-sig-shell a{color:inherit;}

.futuron-sig-app{
  max-width:1080px;
  margin:0 auto;
  display:grid;
  gap:18px;
  width:100%;
  min-width:0;
}
.futuron-app-shell .futuron-sig-app{
  max-width:100%;
}
.futuron-sig-app h1,.futuron-sig-app h2,.futuron-sig-app h3{margin:0;}
.futuron-sig-app .header h1{
  font-size:26px;
  line-height:1.2;
}
.futuron-sig-app .card{
  background:#fff;
  border:1px solid rgba(15,27,56,0.06);
  border-radius:var(--radius);
  padding:18px clamp(16px, 3vw, 26px);
  box-shadow:var(--shadow);
}
.futuron-sig-app .header{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
}
.futuron-sig-app .tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:8px 12px;
  border-radius:999px;
  border:1px solid rgba(15,27,56,0.12);
  background:var(--panel);
  color:var(--ink-2);
  font-weight:600;
  font-size:13px;
}
.futuron-sig-app form{display:grid;gap:12px;}
.futuron-sig-app .grid{display:grid;gap:12px;}
@media (min-width:900px){
  .futuron-sig-app .grid.two{grid-template-columns:1.1fr 1fr;}
  .futuron-sig-app .grid.three{grid-template-columns:repeat(3,minmax(0,1fr));}
}
.futuron-sig-app label{
  display:block;
  font-weight:600;
  font-size:13px;
  margin-bottom:6px;
  color:var(--ink);
}
.futuron-sig-app input,
.futuron-sig-app textarea{
  width:100%;
  border:1px solid rgba(15,27,56,0.16);
  border-radius:10px;
  padding:10px 12px;
  font:inherit;
  background:#fff;
  color:var(--ink);
  transition:border 0.15s ease, box-shadow 0.15s ease;
}
.futuron-sig-app input:focus,
.futuron-sig-app textarea:focus{
  border-color:var(--teal);
  box-shadow:0 0 0 3px rgba(47,122,138,0.14);
  outline:none;
}
.futuron-sig-app input[readonly]{
  background:#f5f8fb;
  color:var(--muted);
}
.futuron-sig-app textarea{min-height:80px;resize:vertical;}
.futuron-sig-app .row{display:flex;gap:10px;align-items:center;flex-wrap:wrap;}
.futuron-sig-app .note{color:var(--muted);font-size:13px;}
.futuron-sig-app .preview-wrap{display:grid;gap:14px;min-width:0;}
.futuron-sig-app .preview-card{
  border:1px solid rgba(15,27,56,0.08);
  border-radius:var(--radius);
  padding:14px;
  background:#fff;
  box-shadow:0 12px 24px rgba(15,27,56,0.08);
  max-width:100%;
  min-width:0;
  overflow:hidden;
}
.futuron-sig-app .preview-viewport{
  width:100%;
  max-width:100%;
  overflow-x:auto;
  -webkit-overflow-scrolling:touch;
}
.futuron-sig-app #futuron-preview{
  display:inline-block;
  min-width:0;
  max-width:none;
}
.futuron-sig-app .preview-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  margin-bottom:10px;
  flex-wrap:wrap;
}
.futuron-sig-app .mini-btn{
  border:1px solid rgba(15,27,56,0.18);
  background:linear-gradient(180deg, #fff, #f5f8fb);
  color:var(--ink);
  padding:8px 10px;
  border-radius:10px;
  font-weight:600;
  cursor:pointer;
}
.futuron-sig-app .mini-btn.primary{
  border-color:rgba(47,122,138,0.26);
  background:linear-gradient(180deg, #f7ffff, #dff3f7);
  color:var(--ink-2);
}
.futuron-sig-app .actions{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:8px;
}
.futuron-sig-app .btn{
  border:none;
  padding:10px 14px;
  border-radius:12px;
  background:linear-gradient(180deg, #0f1b38, #1f2f4d);
  color:#fff;
  font-weight:700;
  cursor:pointer;
  box-shadow:0 10px 20px rgba(15,27,56,0.18);
}
.futuron-sig-app .btn.secondary{
  background:linear-gradient(180deg, #f7ffff, #e6f3f7);
  color:var(--ink-2);
  border:1px solid rgba(47,122,138,0.22);
  box-shadow:none;
}
.futuron-sig-app .output{
  width:100%;
  min-height:120px;
  font-family:"SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size:13px;
  background:#0f1b38;
  color:#d5f0ff;
  border-radius:12px;
  padding:12px;
  border:1px solid rgba(255,255,255,0.1);
}
.futuron-sig-app .brand-hero{
  display:grid;
  place-items:center;
  gap:6px;
  text-align:center;
  width:100%;
  padding:8px 0 4px;
}
.futuron-sig-app .logo-stack{
  position:relative;
  width:min(280px, 74vw);
  max-width:340px;
  height:120px;
  aspect-ratio:5 / 2;
}
.futuron-sig-app .logo-stack img{
  position:absolute;
  inset:0;
  margin:auto;
  width:100%;
  height:100%;
  object-fit:contain;
  display:block;
  opacity:0;
  transform:scale(1);
  transition:opacity 1s ease, transform 1s ease;
}
.futuron-sig-app .logo-stack img.show{opacity:1;}
.futuron-sig-app .logo-new{transform:scale(1.06);}
.futuron-sig-app .logo-new.show{transform:scale(1.12);}
.futuron-sig-app .slogan-hero{
  font-size:14px;
  font-weight:700;
  color:var(--ink-2);
  letter-spacing:0.02em;
  text-transform:uppercase;
  line-height:1.3;
  margin-top:-4px;
  min-height:1.3em;
}
.futuron-sig-app .static-field{
  padding:10px 12px;
  border-radius:10px;
  background:linear-gradient(135deg, rgba(47,122,138,0.08), rgba(15,27,56,0.04));
  border:1px solid rgba(47,122,138,0.18);
  color:var(--ink);
  font-weight:600;
}
.futuron-sig-app .save-status{
  font-size:13px;
  font-weight:600;
  color:var(--teal);
  min-height:20px;
}
.futuron-sig-app .is-hidden{display:none !important;}

.futuron-sig-shell .futuron-sig-gate,
.futuron-app-shell .futuron-sig-gate{
  display:grid;
  place-items:center;
  min-height:50vh;
  padding:20px;
}
.futuron-sig-shell .lock-card,
.futuron-app-shell .lock-card{
  width:min(480px, 94vw);
  background:#fff;
  border:1px solid rgba(15,27,56,0.08);
  border-radius:18px;
  padding:26px 26px 28px;
  box-shadow:0 18px 42px rgba(9,34,68,0.18);
  text-align:center;
}
.futuron-sig-shell .lock-logo,
.futuron-app-shell .lock-logo{
  width:86px;
  height:86px;
  margin:0 auto 6px;
  display:block;
  object-fit:contain;
  filter:drop-shadow(0 6px 12px rgba(20,87,117,0.16));
}
.futuron-sig-shell .lock-title,
.futuron-app-shell .lock-title{
  font-size:28px;
  font-weight:800;
  color:#0f1b38;
  margin:6px 0 4px;
}
.futuron-sig-shell .lock-sub,
.futuron-app-shell .lock-sub{
  color:#1f7f9b;
  font-weight:700;
  font-size:18px;
  margin:6px 0 4px;
}
.futuron-sig-shell .lock-desc,
.futuron-app-shell .lock-desc{
  color:#2a556e;
  margin:6px 0 16px;
}
.futuron-sig-shell .lock-button,
.futuron-app-shell .lock-button{
  display:inline-block;
  margin-top:16px;
  border:none;
  border-radius:14px;
  padding:12px 22px;
  background:linear-gradient(180deg, #0f1b38, #1f4d73);
  color:#fff !important;
  font-weight:800;
  font-size:16px;
  cursor:pointer;
  text-decoration:none;
  box-shadow:0 12px 22px rgba(15,27,56,0.3);
}

@media (min-width:780px){
  .futuron-sig-app .slogan-hero{font-size:16px;}
}
@media (max-width:720px){
  .futuron-app-shell--wide .futuron-app-main,
  .futuron-app-shell--wide .futuron-hub-topbar{
    max-width:100%;
  }
  .futuron-sig-app{
    gap:14px;
  }
  .futuron-sig-app .card{
    padding:14px 12px;
  }
  .futuron-sig-app .header{
    flex-direction:column;
    align-items:center;
    text-align:center;
  }
  .futuron-sig-app .header > div:not(.brand-hero){
    text-align:center;
    width:100%;
    min-width:0;
  }
  .futuron-sig-app .tag{
    align-self:center;
    max-width:100%;
    white-space:normal;
    text-align:center;
    justify-content:center;
    word-break:break-word;
  }
  .futuron-sig-app .header h1{
    font-size:18px;
    line-height:1.3;
    word-break:break-word;
  }
  .futuron-sig-app .logo-stack{
    width:min(200px,62vw);
    height:84px;
  }
  .futuron-sig-app .slogan-hero{
    font-size:12px;
  }
  .futuron-sig-app .grid.two,
  .futuron-sig-app .grid.three{
    grid-template-columns:1fr;
  }
  .futuron-sig-app .static-field{
    word-break:break-word;
  }
  .futuron-sig-app .preview-head{
    flex-direction:column;
    align-items:stretch;
  }
  .futuron-sig-app .preview-head .actions,
  .futuron-sig-app .row .actions{
    width:100%;
  }
  .futuron-sig-app .preview-head .actions .mini-btn,
  .futuron-sig-app .row .actions .btn{
    flex:1 1 calc(50% - 5px);
    min-width:0;
    text-align:center;
  }
  .futuron-sig-app .row{
    flex-direction:column;
    align-items:stretch !important;
    gap:12px;
  }
  .futuron-sig-app .row > div{
    width:100%;
    min-width:0;
  }
  .futuron-sig-app .output{
    font-size:11px;
    min-height:96px;
    word-break:break-all;
  }
}
@media (prefers-reduced-motion:reduce){
  .futuron-sig-app .logo-stack img{transition:none;}
  .futuron-sig-app .logo-old{opacity:1;}
  .futuron-sig-app .logo-new{opacity:0;display:none;}
}