/* Base theme */
:root{
  /* Color tokens (WCAG AA) */
  --bg:#F7FAFF;
  --surface:#FFFFFF;
  --text:#0A0D14;
  --muted:#4B5563;
  --primary:#0A3D91;
  --primary-600:#0C4FB8;
  --accent:#12B981;
  --danger:#E11D48;
  --border:#E5E7EB;
  --shadow: 0 1px 2px rgba(0,0,0,.06), 0 6px 24px rgba(2,6,23,.08);
}
@media (prefers-color-scheme: dark){
  :root{
    --bg:#0B0C10;
    --surface:#111318;
    --text:#E5E7EB;
    --muted:#9CA3AF;
    --border:#1f2937;
    --primary:#3E7BFF;
    --primary-600:#2F68E8;
    --accent:#16D39A;
    --danger:#F43F5E;
    --shadow: 0 1px 2px rgba(0,0,0,.35), 0 10px 30px rgba(0,0,0,.4);
  }
}

/* Typography */
html{font-size:16px;scroll-behavior:smooth}
body{
  margin:0;
  font-family: Inter, Plus Jakarta Sans, system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Noto Sans,sans-serif;
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--accent) 8%, transparent) 0%, transparent 30%),
    linear-gradient(0deg, color-mix(in srgb, var(--accent-2) 6%, transparent) 0%, transparent 35%),
    radial-gradient(900px 500px at 120% -10%, color-mix(in srgb, var(--accent) 10%, transparent), transparent),
    radial-gradient(900px 500px at -20% 0%, color-mix(in srgb, var(--accent-2) 8%, transparent), transparent),
    var(--bg);
  color:var(--text);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
/* Mobile defaults */
img{max-width:100%;height:auto}
button,.btn{font-size:clamp(14px, 2.5vw, 16px);padding:.6em 1.2em;border-radius:12px}
.container{width:100%;max-width:1100px;padding:16px}
/* Prevent horizontal overflows */
html,body{max-width:100%;overflow-x:hidden}
.container,.row,[class*="col-"]{min-width:0}
/* Fixed action bar helpers */
.fixed-action{z-index:2000;padding-bottom:env(safe-area-inset-bottom)}
@media (max-width:768px){
  .section{padding:20px 0}
  .container{padding:16px}
  .row{margin-left:0;margin-right:0}
  .btn{width:100%}
}

/* Variant: softer background */
.bg-soft{
  /* Gris claro azulado, sutil y profesional */
  background:
    linear-gradient(180deg, #eef2f7 0%, rgba(238,242,247,.85) 35%, #f8fafc 100%),
    radial-gradient(900px 500px at 12% -10%, rgba(201,214,255,.25), transparent 70%),
    radial-gradient(900px 500px at 110% 0%, rgba(180,210,255,.20), transparent 70%),
    #f6f8fb !important;
}
@media (prefers-color-scheme: dark){
  .bg-soft{
    background:
      linear-gradient(180deg, rgba(25,32,45,.75) 0%, rgba(15,20,30,.85) 60%, rgba(11,12,16,1) 100%),
      radial-gradient(900px 500px at 15% -10%, rgba(38,70,120,.35), transparent 70%),
      radial-gradient(900px 500px at 110% 0%, rgba(29,78,137,.25), transparent 70%),
      #0B0C10 !important;
  }
}
h1{font-size:clamp(2rem, 4vw, 3rem);line-height:1.2;margin:0 0 16px}
h2{font-size:2rem;line-height:1.25;margin:24px 0 12px}
h3{font-size:1.5rem;margin:12px 0 8px}
p{margin:8px 0;color: var(--text);max-width:72ch}
ul{margin:8px 0;padding-left:1.1rem}
li{margin:4px 0}
small, .muted{color:var(--muted)}

/* Layout */
.container{max-width:1100px;margin:0 auto;padding:24px}
.section{padding:24px 0}
@media(min-width:768px){.section{padding: 36px 0}}

/* Header / Nav */
header{position:sticky;top:0;background:color-mix(in srgb, var(--bg) 85%, transparent);backdrop-filter:blur(8px);border-bottom:1px solid var(--border);z-index:50}
.navbar{display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{font-weight:700;letter-spacing:.2px}
.nav{display:flex;gap:14px;flex-wrap:wrap}
.nav a{color:var(--text);text-decoration:none;padding:8px 10px;border-radius:8px}
.nav a:hover,.nav a:focus{background:var(--surface);outline:2px solid transparent}
/* Constrain brand logo size */
.navbar .navbar-brand img{height:28px;max-height:28px;width:auto}
/* Ensure contrast for links */
.nav a:focus-visible{outline:3px solid var(--primary)}

/* Hero */
.hero{padding: clamp(32px, 8vw, 72px) 0}
.hero--gradient{background:
  radial-gradient(1000px 400px at 10% -10%, color-mix(in srgb, var(--accent) 18%, transparent), transparent),
  radial-gradient(900px 400px at 110% 10%, color-mix(in srgb, var(--accent-2) 14%, transparent), transparent);
}
.lead{font-size:clamp(1rem, .5vw + .9rem, 1.125rem);color:var(--muted);max-width:75ch}

/* Buttons */
.btn{display:inline-block;padding:10px 16px;border-radius:10px;background:var(--primary);color:#fff;border:1px solid transparent;transition:transform .08s ease, box-shadow .2s ease, background .2s ease}
.btn:hover{transform:translateY(-1px);box-shadow:var(--shadow);background:var(--primary-600)}
.btn.secondary{background:var(--accent)}
.btn.ghost{background:transparent;color:var(--text);border-color:var(--border)}
.btn:focus{outline:3px solid color-mix(in srgb, var(--accent) 40%, transparent);outline-offset:2px}

/* Grid & Cards */
.grid{display:grid;gap:16px}
@media(min-width:768px){.cols-2{grid-template-columns:repeat(2, minmax(0, 1fr))}}
@media(min-width:960px){.cols-3{grid-template-columns:repeat(3, minmax(0, 1fr))}}
.card{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:18px;box-shadow:var(--shadow);transition:transform .12s ease, box-shadow .2s ease}
.card:hover{transform:translateY(-2px);box-shadow:0 4px 10px rgba(0,0,0,.08)}
.card .card-body>*+*{margin-top:8px}
.card-premium{border-radius:16px}
.card-premium.micro{background:#ffffff}
.card-premium.express{background:#f3f6fa}
.btn-full{width:100%}
.section{padding: 28px 0}
.separator{height:1px;background:var(--border);opacity:.6;margin:28px 0}
.badge{display:inline-block;padding:4px 8px;border-radius:999px;font-size:.8125rem;border:1px solid var(--border);background:color-mix(in srgb, var(--accent) 8%, transparent)}

/* Prose */
.prose h1,.prose h2,.prose h3{margin-top:1.6em}
.prose p{color:var(--text)}
.prose ul{padding-left:1.1rem}

/* Forms */
form{display:grid;gap:12px;max-width:640px}
input,select,textarea{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:10px;background:var(--surface);color:var(--text)}
input:focus,select:focus,textarea:focus{outline:3px solid color-mix(in srgb, var(--accent) 35%, transparent);outline-offset:2px}
button[type="submit"]{cursor:pointer}

/* Footer */
footer{border-top:1px solid var(--border);margin-top:48px}

/* Helpers */
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}