:root{
  --bg:#0d0d0f;--panel:#17171b;--ink:#e9e2d2;--muted:#a89f90;--line:#39342d;--accent:#c7a35a;
  --radius:18px;--tap:48px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:radial-gradient(circle at top,#202027,#0b0b0d 55%);color:var(--ink);font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;line-height:1.45}
img{max-width:100%;height:auto}
.wrap{width:min(1100px,100%);margin:auto;padding:clamp(14px,3vw,32px)}
header{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:26px}.brand{font-family:Georgia,serif;font-size:clamp(22px,4vw,28px);letter-spacing:.08em}.nav{display:flex;gap:10px;flex-wrap:wrap}.nav a{color:var(--ink);text-decoration:none;padding:10px 12px;border-radius:999px;border:1px solid transparent}.nav a:hover{border-color:var(--line);background:#111115}
.card{background:rgba(23,23,27,.92);border:1px solid var(--line);border-radius:var(--radius);padding:clamp(16px,3vw,24px);box-shadow:0 18px 50px #0008}h1{font-size:clamp(25px,5vw,38px);line-height:1.1;margin-top:0}h2{font-size:clamp(20px,4vw,28px)}label{display:block;margin:16px 0 7px;color:var(--muted)}input,select{width:100%;min-height:var(--tap);padding:13px 14px;border-radius:12px;border:1px solid #3b352c;background:#0d0d10;color:var(--ink);font-size:16px}.grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:var(--tap);border:0;border-radius:999px;padding:13px 22px;background:var(--accent);color:#13100a;font-weight:700;text-decoration:none;cursor:pointer;margin-top:18px;line-height:1.1}.btn.secondary{background:transparent;color:var(--ink);border:1px solid var(--line)}.preview{width:100%;max-height:78vh;object-fit:contain;border-radius:14px;border:1px solid var(--line);background:#000;margin-top:20px}.msg{padding:12px 14px;border:1px solid var(--line);border-radius:12px;background:#121216}.muted{color:var(--muted)}table{width:100%;border-collapse:collapse;margin-top:16px;display:block;overflow-x:auto}td{padding:10px;border-bottom:1px solid var(--line);vertical-align:top}.actions{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.signature-box{background:#fff;border:1px solid #c9b78f;border-radius:14px;overflow:hidden;margin:8px 0 12px;box-shadow:inset 0 0 0 1px rgba(0,0,0,.04)}
.signature-box canvas{display:block;width:100%;height:260px;touch-action:none;cursor:crosshair;background:#fff}
.step-block{margin-top:22px;padding-top:8px}.step-block h2{font-family:Georgia,serif;font-weight:500;margin:8px 0 14px;color:#f1dfb1}.template-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin:10px 0 24px}.template-card{display:block;position:relative;border:1px solid var(--line);border-radius:16px;background:#101014;padding:10px;cursor:pointer;transition:transform .15s ease,border-color .15s ease,box-shadow .15s ease}.template-card:hover{transform:translateY(-2px);border-color:#8a7040}.template-card.selected{border-color:var(--accent);box-shadow:0 0 0 2px rgba(199,163,90,.25),0 14px 40px #0008}.template-card input{position:absolute;opacity:0;pointer-events:none}.template-card img{width:100%;aspect-ratio:1.414/1;object-fit:cover;object-position:center;border-radius:12px;background:#000;display:block}.template-card span{display:block;text-align:center;font-weight:700;margin-top:10px;color:var(--ink)}
@media(max-width:900px){.template-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.template-card img{max-height:240px}.grid{grid-template-columns:1fr}}
@media(max-width:640px){.wrap{padding:12px}header{display:block;margin-bottom:14px}.brand{margin-bottom:10px}.nav a{margin:0;padding:11px 13px;background:#111115;border-color:var(--line)}.card{border-radius:14px}.template-grid{grid-template-columns:1fr;gap:14px}.template-card{padding:8px}.template-card img{max-height:220px;aspect-ratio:auto}.signature-box canvas{height:230px}.actions{display:grid;grid-template-columns:1fr;gap:8px}.btn{width:100%;margin-top:10px}td{display:block;width:100%;padding:8px 0}tr{display:block;border-bottom:1px solid var(--line);padding:6px 0}td{border:0}.preview{max-height:none}}
@media(min-width:1200px){.wrap{max-width:1180px}.preview{max-height:86vh}}

/* Panel de certificados emitidos */
.admin-toolbar{display:flex;gap:12px;align-items:end;flex-wrap:wrap;margin:18px 0}.admin-toolbar .grow{flex:1 1 260px}.stats{display:flex;gap:12px;flex-wrap:wrap;margin:12px 0}.stat{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:14px;padding:12px 14px}.table-scroll{overflow-x:auto;margin-top:16px}.admin-table{width:100%;border-collapse:collapse;min-width:760px}.admin-table th,.admin-table td{padding:12px;border-bottom:1px solid rgba(255,255,255,.12);text-align:left;vertical-align:middle}.admin-table th{font-size:.9rem;opacity:.8}.admin-table .nowrap{white-space:nowrap}.small-btn{display:inline-block;padding:8px 12px;border-radius:10px;text-decoration:none;border:1px solid rgba(255,255,255,.18)}.pager{display:flex;gap:10px;align-items:center;justify-content:flex-end;margin-top:16px;flex-wrap:wrap}.login-card{max-width:520px;margin:auto}@media(max-width:700px){.admin-table{min-width:0}.admin-table thead{display:none}.admin-table,.admin-table tbody,.admin-table tr,.admin-table td{display:block;width:100%}.admin-table tr{border:1px solid rgba(255,255,255,.12);border-radius:14px;margin:12px 0;padding:8px}.admin-table td{border-bottom:0;padding:8px}.admin-table td::before{content:attr(data-label);display:block;font-size:.78rem;opacity:.65;margin-bottom:3px}.pager{justify-content:center}}