/* ================= Sigline — builder UI ================= */
:root{
  --bg:#0a0c11;
  --panel:#12151d;
  --panel-2:#171b26;
  --input:#0d1017;
  --border:rgba(255,255,255,.08);
  --text:#eef0f6;
  --muted:#9aa3b5;
  --accent:#6c5ce7;
  --accent-2:#8b7bff;
  --gold1:#f5b942;
  --gold2:#e08a1e;
  --radius:16px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  color:var(--text);
  font-family:'Inter',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
  background:
    radial-gradient(900px 420px at 15% -5%, rgba(108,92,231,.16), transparent 60%),
    radial-gradient(800px 380px at 90% 0%, rgba(139,123,255,.10), transparent 60%),
    var(--bg);
  min-height:100vh;
}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  backdrop-filter:blur(14px);
  background:rgba(10,12,17,.78);
  border-bottom:1px solid var(--border);
}
.header-inner{
  max-width:1280px;margin:0 auto;padding:14px 24px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.brand{display:flex;align-items:baseline;gap:12px;flex-wrap:wrap}
.logo{font-size:22px;font-weight:800;letter-spacing:-.02em}
.spark{color:var(--accent-2)}
.tagline{color:var(--muted);font-size:13px}

/* ---------- buttons ---------- */
.btn{
  font:inherit;font-weight:600;font-size:14px;
  border:1px solid transparent;border-radius:10px;
  padding:10px 18px;cursor:pointer;
  transition:transform .12s ease, box-shadow .12s ease, background .12s ease;
  color:var(--text);background:transparent;
}
.btn:active{transform:translateY(1px)}
.btn.primary{
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
  box-shadow:0 6px 20px rgba(108,92,231,.35);
}
.btn.primary:hover{box-shadow:0 8px 26px rgba(108,92,231,.5)}
.btn.ghost{border-color:var(--border);background:rgba(255,255,255,.03)}
.btn.ghost:hover{background:rgba(255,255,255,.07)}
.btn.pro{
  background:linear-gradient(135deg,var(--gold1),var(--gold2));
  color:#1a1206;box-shadow:0 6px 20px rgba(245,185,66,.3);
}
.btn.pro:hover{box-shadow:0 8px 26px rgba(245,185,66,.45)}
.btn.small{padding:6px 12px;font-size:12px}
.linklike{
  background:none;border:none;padding:0;cursor:pointer;
  color:var(--accent-2);font:inherit;font-size:inherit;text-decoration:underline;
}

/* ---------- hero ---------- */
.hero{max-width:1280px;margin:0 auto;padding:44px 24px 8px}
.hero h1{font-size:clamp(28px,4vw,44px);font-weight:800;letter-spacing:-.03em;margin:0 0 10px}
.hero p{color:var(--muted);font-size:16px;max-width:640px;margin:0}

/* ---------- layout ---------- */
.builder{
  max-width:1280px;margin:0 auto;padding:24px;
  display:grid;grid-template-columns:minmax(360px,440px) 1fr;gap:24px;
  align-items:start;
}
.panel{
  background:var(--panel);border:1px solid var(--border);
  border-radius:var(--radius);padding:22px;
}
.panel h2{
  font-size:13px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;
  color:var(--muted);margin:26px 0 12px;
}
.panel h2:first-child{margin-top:0}
.muted-inline{color:var(--muted);font-weight:400;text-transform:none;letter-spacing:0}

/* ---------- form ---------- */
.field{margin-bottom:14px;min-width:0}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.field-row .field{margin-bottom:14px}
label{display:block;font-size:13px;font-weight:600;margin-bottom:6px;color:#cdd3e1}
input[type=text],input[type=email],input[type=tel],input[type=url],textarea{
  width:100%;font:inherit;font-size:14px;color:var(--text);
  background:var(--input);border:1px solid var(--border);border-radius:10px;
  padding:10px 12px;outline:none;transition:border-color .12s ease, box-shadow .12s ease;
}
input:focus,textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(108,92,231,.25)}
textarea{resize:vertical;min-height:56px}
input[type=file]{font-size:13px;color:var(--muted)}
input[type=file]::file-selector-button{
  font:inherit;font-size:13px;font-weight:600;color:var(--text);
  background:var(--panel-2);border:1px solid var(--border);border-radius:8px;
  padding:8px 14px;margin-right:10px;cursor:pointer;
}
.photo-preview{display:flex;align-items:center;gap:12px;margin:-4px 0 14px}
.photo-preview img{width:52px;height:52px;border-radius:50%;object-fit:cover;border:2px solid var(--border)}

.color-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.swatches{display:flex;gap:8px;flex-wrap:wrap}
.swatch{
  width:32px;height:32px;border-radius:50%;cursor:pointer;padding:0;
  border:2px solid transparent;background:none;
  transition:transform .12s ease, border-color .12s ease;
}
.swatch:hover{transform:scale(1.12)}
.swatch.active{border-color:#fff;box-shadow:0 0 0 2px var(--accent)}
input[type=color]{
  width:44px;height:36px;padding:2px;border:1px solid var(--border);
  border-radius:8px;background:var(--input);cursor:pointer;
}

/* ---------- template picker ---------- */
.template-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.tpl-card{
  position:relative;display:flex;flex-direction:column;gap:8px;align-items:stretch;
  background:var(--input);border:1px solid var(--border);border-radius:12px;
  padding:12px 10px;cursor:pointer;color:var(--text);font:inherit;
  transition:border-color .12s ease, transform .12s ease;
}
.tpl-card:hover{transform:translateY(-2px);border-color:rgba(108,92,231,.5)}
.tpl-card.active{border-color:var(--accent);box-shadow:0 0 0 2px rgba(108,92,231,.4)}
.tpl-schem{display:block;height:46px}
.tpl-schem i{display:block;background:#2b3245;border-radius:3px;height:6px;margin:4px 0}
.tpl-name{font-size:12px;font-weight:600;text-align:center;color:#cdd3e1}
.tpl-label{font-size:11px;text-align:center;color:var(--muted);line-height:1.3}
.pro-badge{
  position:absolute;top:8px;right:8px;
  font-size:10px;font-weight:800;letter-spacing:.06em;
  background:linear-gradient(135deg,var(--gold1),var(--gold2));color:#1a1206;
  border-radius:6px;padding:2px 7px;
}

/* ---------- preview ---------- */
.preview-panel{position:sticky;top:84px}
.preview-card{
  background:#fff;border-radius:12px;padding:28px;
  min-height:220px;overflow-x:auto;
  box-shadow:inset 0 0 0 1px rgba(0,0,0,.06);
}
.export-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:16px}
.hint{color:var(--muted);font-size:13px;line-height:1.6;margin:12px 0 0}

/* ---------- saved signatures ---------- */
.save-row{display:flex;gap:10px}
.save-row input{flex:1}
.saved-list{list-style:none;margin:12px 0 0;padding:0;display:flex;flex-direction:column;gap:8px}
.saved-list li{
  display:flex;align-items:center;gap:10px;
  background:var(--input);border:1px solid var(--border);border-radius:10px;padding:10px 12px;
}
.saved-list .sig-meta{flex:1;min-width:0}
.saved-list .sig-name{font-size:14px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.saved-list .sig-date{font-size:12px;color:var(--muted)}
.saved-empty{color:var(--muted);font-size:13px}

/* ---------- footer ---------- */
.site-footer{
  max-width:1280px;margin:0 auto;padding:32px 24px 48px;
  color:var(--muted);font-size:13px;text-align:center;
}

/* ---------- pro modal ---------- */
.modal-backdrop{
  position:fixed;inset:0;z-index:100;
  background:rgba(4,6,10,.7);backdrop-filter:blur(6px);
  display:flex;align-items:center;justify-content:center;padding:20px;
}
.modal-backdrop[hidden]{display:none}
.modal{
  position:relative;width:100%;max-width:460px;
  background:var(--panel-2);border:1px solid var(--border);border-radius:20px;
  padding:32px;box-shadow:0 30px 80px rgba(0,0,0,.5);
  animation:pop .18s ease-out;
}
@keyframes pop{from{transform:scale(.96) translateY(8px);opacity:0}}
.modal h2{font-size:24px;margin:0 0 6px;letter-spacing:-.02em}
.modal-sub{color:var(--muted);font-size:14px;margin:0 0 18px}
.modal-close{
  position:absolute;top:14px;right:14px;
  width:34px;height:34px;border-radius:50%;border:1px solid var(--border);
  background:transparent;color:var(--muted);font-size:20px;line-height:1;cursor:pointer;
}
.modal-close:hover{color:var(--text);background:rgba(255,255,255,.06)}
.pro-features{list-style:none;margin:0 0 22px;padding:0;display:flex;flex-direction:column;gap:10px}
.pro-features li{font-size:14px;padding-left:28px;position:relative}
.pro-features li::before{content:'✦';position:absolute;left:0;color:var(--gold1)}
.pricing{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.price-card{
  display:flex;flex-direction:column;align-items:center;gap:2px;
  border:1px solid var(--border);border-radius:14px;padding:18px 10px;
  text-decoration:none;color:var(--text);
  transition:transform .12s ease, border-color .12s ease;
}
.price-card:hover{transform:translateY(-2px);border-color:var(--gold1)}
.price-card.best{border-color:var(--gold1);background:rgba(245,185,66,.07)}
.price-card strong{font-size:28px;font-weight:800}
.price-card span{font-size:13px;color:var(--muted)}
.price-card em{font-style:normal;font-size:11px;font-weight:700;color:var(--gold1);margin-top:4px}
.modal-note{font-size:12px;color:var(--gold1);margin:16px 0 0;line-height:1.5}
.modal-note[hidden]{display:none}
.modal-note code{background:rgba(255,255,255,.08);padding:1px 6px;border-radius:4px}

/* ---------- toast ---------- */
.toast{
  position:fixed;bottom:28px;left:50%;transform:translateX(-50%) translateY(10px);
  background:#1a1f2c;border:1px solid var(--accent);color:var(--text);
  font-size:14px;font-weight:500;border-radius:12px;padding:12px 20px;
  box-shadow:0 12px 32px rgba(0,0,0,.5);z-index:200;
  opacity:0;transition:opacity .2s ease, transform .2s ease;
  max-width:90vw;text-align:center;
}
.toast[hidden]{display:none}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ---------- responsive ---------- */
@media (max-width:960px){
  .builder{grid-template-columns:1fr}
  .preview-panel{position:static}
  .template-grid{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:560px){
  .field-row{grid-template-columns:1fr}
  .template-grid{grid-template-columns:repeat(2,1fr)}
  .hero{padding-top:28px}
  .header-inner{padding:12px 16px}
  .builder{padding:16px}
}