:root{
  --bg1:#667eea;
  --bg2:#764ba2;

  --card:#ffffff;
  --muted:#6b7280;
  --text:#111827;

  --primary1:#3b82f6;
  --primary2:#1d4ed8;

  --border:#e5e7eb;
  --glass: rgba(255,255,255,0.10);
  --glassBorder: rgba(255,255,255,0.18);
}

/* Base */
*{ box-sizing:border-box; }
html, body{ height:100%; }
body{
  font-family:-apple-system,BlinkMacSystemFont,sans-serif;
  margin:0;
  color:#fff;
  background: linear-gradient(135deg, var(--bg1) 0%, var(--bg2) 100%);
  min-height:100vh;
}
a{ color:inherit; }
.container{
  max-width:1100px;
  margin:0 auto;
  padding:0 1rem;
}

/* Buttons */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:0.5rem;
  padding:0.9rem 1.1rem;
  border-radius:12px;
  font-weight:700;
  text-decoration:none;
  border:1px solid rgba(255,255,255,0.25);
  color:#fff;
  transition: transform .15s ease, opacity .15s ease;
  white-space:nowrap;
}
.btn:hover{ transform: translateY(-1px); }
.btn-ghost{ background: rgba(255,255,255,0.10); }
.btn-primary{
  border:none;
  background: linear-gradient(135deg, var(--primary1), var(--primary2));
  box-shadow: 0 16px 30px rgba(0,0,0,0.18);
}
.btnlink{
  display:inline-block;
  padding:0.75rem 1rem;
  border-radius:12px;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.18);
  text-decoration:none;
  font-weight:700;
  opacity:0.95;
}
.btnlink:hover{ opacity:1; transform: translateY(-1px); }
.btnlink.btnprimary{
  background: linear-gradient(135deg, var(--primary1), var(--primary2));
  border:none;
}

/* Header / Nav */
header{
  position:sticky;
  top:0;
  z-index:10;
  background: var(--glass);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255,255,255,0.15);
}
.nav{
  max-width:1100px;
  margin:0 auto;
  padding: 1.25rem 1rem;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:1rem;
}
.brand{
  display:flex;
  flex-direction:column;
  gap:0.15rem;
}
.brand strong{
  font-size:1.1rem;
  letter-spacing:0.3px;
}
.brand span{
  font-size:0.9rem;
  opacity:0.9;
}
.nav-actions{
  display:flex;
  gap:0.75rem;
  align-items:center;
}

/* Landing */
main{
  max-width:1100px;
  margin:0 auto;
  padding: 2.25rem 1rem 3rem;
}
.hero{
  display:grid;
  grid-template-columns: 1.25fr 0.75fr;
  gap:1.5rem;
  align-items:stretch;
  margin-top:1.5rem;
}
.hero-card{
  background: rgba(255,255,255,0.14);
  backdrop-filter: blur(12px);
  border: 1px solid var(--glassBorder);
  border-radius: 20px;
  padding: 2rem;
  box-shadow: 0 20px 40px rgba(0,0,0,0.10);
}
.hero-title{
  margin:0;
  font-size: 2.6rem;
  line-height:1.1;
  letter-spacing:-0.5px;
}
.hero-subtitle{
  margin-top:0.9rem;
  font-size:1.05rem;
  line-height:1.6;
  opacity:0.95;
}
.hero-ctas{
  margin-top:1.4rem;
  display:flex;
  flex-wrap:wrap;
  gap:0.75rem;
}
.hero-mini{
  margin-top:1rem;
  font-size:0.95rem;
  opacity:0.9;
}
.side-card{
  background: rgba(255,255,255,0.95);
  color: var(--text);
  border-radius: 20px;
  padding: 1.5rem;
  box-shadow: 0 20px 40px rgba(0,0,0,0.10);
  border: 1px solid rgba(255,255,255,0.35);
  display:flex;
  flex-direction:column;
  justify-content:space-between;
  gap:1rem;
}
.side-card h2{
  margin:0;
  font-size:1.1rem;
  letter-spacing:-0.2px;
}
.side-card p{
  margin:0.5rem 0 0;
  color: var(--muted);
  line-height:1.55;
  font-size:0.95rem;
}
.metric{
  margin-top:1rem;
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap:0.75rem;
}
.metric .box{
  border:1px solid var(--border);
  border-radius:16px;
  padding:0.9rem;
  background: #f8fafc;
}
.metric .num{
  font-size:1.2rem;
  font-weight:800;
  margin:0;
  color:#111827;
}
.metric .lbl{
  margin:0.2rem 0 0;
  font-size:0.85rem;
  color: var(--muted);
}
.section{ margin-top: 2rem; }
.grid3{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap:1rem;
  margin-top:1rem;
}
.card{
  background: rgba(255,255,255,0.14);
  backdrop-filter: blur(12px);
  border: 1px solid var(--glassBorder);
  border-radius: 18px;
  padding: 1.25rem;
  box-shadow: 0 16px 30px rgba(0,0,0,0.10);
  min-height: 120px;
}
.card h3{
  margin:0;
  font-size:1.05rem;
}
.card p{
  margin:0.6rem 0 0;
  opacity:0.92;
  line-height:1.55;
  font-size:0.95rem;
}
.footer{
  max-width:1100px;
  margin:0 auto;
  padding: 0 1rem 2rem;
  opacity:0.9;
  font-size:0.9rem;
}

/* Audit (app/demo) */
.audit-header{
  background: rgba(255,255,255,0.1);
  backdrop-filter: blur(10px);
  color: #fff;
  padding: 1.5rem 2rem;
  border-bottom: 1px solid rgba(255,255,255,0.15);
  position:sticky;
  top:0;
  z-index:10;
}
.topbar{
  max-width: 980px;
  margin: 0 auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:1rem;
}
.brandlink{ text-decoration:none; }
.audit-title{
  font-size: 1.6rem;
  margin: 0;
}
.audit-subtitle{
  opacity:0.95;
}

.audit-main{
  max-width: 700px;
  margin: 2rem auto;
  padding: 2rem;
  background: rgba(255,255,255,0.95);
  border-radius: 20px;
  box-shadow: 0 20px 40px rgba(0,0,0,0.1);
  color: var(--text);
}
.audit-main h2{
  margin: 0 0 0.75rem 0;
}
label{
  display:block;
  margin-bottom:0.5rem;
  font-weight:600;
  color:#374151;
}
input[type="text"]{
  width:100%;
  padding:1rem;
  margin-bottom:1.5rem;
  border:2px solid var(--border);
  border-radius:12px;
  font-size:1rem;
  transition:border-color 0.2s;
}
input[type="text"]:focus{
  outline:none;
  border-color: var(--primary1);
  box-shadow: 0 0 0 3px rgba(59,130,246,0.1);
}
button{
  background: linear-gradient(135deg, var(--primary1), var(--primary2));
  color:#fff;
  border:none;
  padding:1rem 2rem;
  border-radius:12px;
  font-size:1.1rem;
  font-weight:600;
  cursor:pointer;
  width:100%;
  transition: transform 0.2s;
}
button:hover:not(:disabled){ transform: translateY(-2px); }
button:disabled{ opacity:0.6; cursor:not-allowed; }

.small{
  color: var(--muted);
  font-size:0.9rem;
  line-height:1.5;
}
.status-line{
  display:inline-block;
  margin-top:0.75rem;
}

.result{
  margin-top:2rem;
  padding:2rem;
  border-radius:16px;
  background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
  border: 1px solid #e2e8f0;
}
.score{
  font-size:4rem;
  font-weight:800;
  color: transparent;
  background: linear-gradient(135deg, #10b981, #059669);
  -webkit-background-clip:text;
  background-clip:text;
  margin:0 0 1rem 0;
  text-align:center;
}
.score.bajo{
  background: linear-gradient(135deg, #ef4444, #dc2626);
  -webkit-background-clip:text;
  background-clip:text;
}
.score.alto{
  background: linear-gradient(135deg, #10b981, #059669);
  -webkit-background-clip:text;
  background-clip:text;
}
.tag{
  display:inline-block;
  padding:0.25rem 0.75rem;
  border-radius:9999px;
  font-size:0.8rem;
  font-weight:600;
  margin-right:0.5rem;
}
.tag-verde{ background:#dcfce7; color:#166534; }
.tag-rojo{ background:#fee2e2; color:#dc2626; }

.result h3{
  color:#1f2937;
  margin-top:2rem;
  font-size:1.3rem;
}
.result ul{ padding-left:1.5rem; }
.result li{
  margin-bottom:0.75rem;
  color:#374151;
  line-height:1.6;
}
.result li::marker{ color: var(--primary1); }

.feedback{
  margin-top:2rem;
  padding:1.5rem;
  background:#fef3c7;
  border-radius:12px;
  border-left:4px solid #f59e0b;
  color:#1f2937;
}
.feedback a{
  color:#059669;
  font-weight:700;
  text-decoration:none;
}
.feedback a:hover{ text-decoration:underline; }

/* Login placeholder */
.login-wrap{
  min-height:100vh;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:1rem;
}
.login-card{
  max-width:520px;
  width:100%;
  background: rgba(255,255,255,0.95);
  border-radius:18px;
  padding:1.75rem;
  box-shadow:0 20px 40px rgba(0,0,0,0.12);
  color: var(--text);
}
.login-card h1{
  margin:0 0 0.5rem 0;
  font-size:1.4rem;
  color: var(--text);
}
.login-card p{
  margin:0.5rem 0;
  color:#374151;
  line-height:1.6;
}
.login-card a{
  display:inline-block;
  margin-top:1rem;
  text-decoration:none;
  font-weight:700;
  color: var(--primary2);
}

/* Responsive */
@media (max-width: 920px){
  .hero{ grid-template-columns: 1fr; }
}
@media (max-width: 860px){
  .grid3{ grid-template-columns: 1fr; }
  .hero-title{ font-size:2.1rem; }
}
@media (max-width: 640px){
  .score{ font-size:3rem; }
  .audit-main{ margin:1rem; padding:1.5rem; }
  .audit-header{ padding:1.25rem; }
}