:root {
  --primary: #061c6b;
  --primary-dark: #041545;
  --accent: #07ba86;
  --accent-dark: #06966f;
  --brand-gradient: linear-gradient(135deg, #061c6b 0%, #07ba86 100%);
  --muted: #6c757d;
  --line: #e7e9f0;
  --bg: #f4f6fb;
  --nav-bg: rgba(4, 19, 46, 0.82);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: #2b2f38;
  background:
    radial-gradient(1200px 500px at 100% -10%, rgba(7,186,134,.10), transparent 60%),
    radial-gradient(1000px 460px at -10% 0%, rgba(6,28,107,.10), transparent 55%),
    var(--bg);
  min-height: 100vh;
}

/* Navbar acrílico */
.cko-nav {
  position: sticky; top: 0; z-index: 100;
  background: var(--nav-bg);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255,255,255,.10);
}
.cko-nav .container { display: flex; align-items: center; justify-content: space-between; padding: 12px 0; }
.cko-brand { display: flex; align-items: center; gap: 10px; color: #fff; font-weight: 700; text-decoration: none; }
.cko-brand img { height: 34px; }
.cko-nav .secure { color: rgba(255,255,255,.8); font-size: .85rem; display: flex; align-items: center; gap: 6px; }

/* Encabezado */
.cko-head { text-align: center; padding: 38px 0 8px; }
.cko-head h1 { color: var(--primary); font-weight: 800; margin: 0 0 6px; font-size: 1.9rem; }
.cko-head p { color: var(--muted); margin: 0; }

/* Stepper */
.cko-steps { display: flex; align-items: center; gap: 6px; max-width: 520px; margin: 22px auto 6px; padding: 0 12px; }
.cko-step { display: flex; align-items: center; gap: 8px; }
.cko-step .dot {
  width: 30px; height: 30px; border-radius: 50%; flex: 0 0 30px;
  display: flex; align-items: center; justify-content: center;
  background: #d7dbe7; color: #6c757d; font-weight: 600; font-size: .9rem; transition: .25s;
}
.cko-step .lbl { font-size: .9rem; color: var(--muted); font-weight: 600; }
.cko-step.active .dot { background: var(--primary); color: #fff; }
.cko-step.done .dot { background: var(--accent); color: #fff; }
.cko-step.active .lbl, .cko-step.done .lbl { color: var(--primary); }
.cko-bar { flex: 1; height: 3px; border-radius: 2px; background: #d7dbe7; }
.cko-bar.fill { background: var(--brand-gradient); }

/* Layout */
.cko-wrap { max-width: 980px; margin: 18px auto 60px; padding: 0 16px; }
.cko-grid { display: grid; grid-template-columns: 1fr 320px; gap: 20px; align-items: start; }
.card-cko {
  background: #fff; border: 1px solid var(--line); border-radius: 16px;
  box-shadow: 0 6px 24px rgba(6,28,107,.06); padding: 22px;
}
.card-cko h3 { color: var(--primary); font-weight: 700; margin: 0 0 4px; font-size: 1.2rem; }
.card-cko .sub { color: var(--muted); font-size: .92rem; margin: 0 0 18px; }

/* Pasos: solo el activo visible */
.paso { display: none; }
.paso.activo { display: block; animation: fade .25s ease; }
@keyframes fade { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

/* Formularios */
.f-group { margin-bottom: 14px; }
.f-label { display: block; font-size: .85rem; color: #3a3f4a; margin-bottom: 6px; font-weight: 600; }
.f-control {
  width: 100%; border: 1px solid var(--line); border-radius: 10px;
  padding: 11px 13px; font-size: .98rem; background: #fff; transition: .15s;
}
.f-control:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(7,186,134,.15); }
.f-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.f-hint { font-size: .8rem; color: var(--muted); margin-top: 5px; }
.f-check { display: flex; align-items: flex-start; gap: 8px; font-size: .9rem; color: #3a3f4a; }
.f-check a { color: var(--accent-dark); }

/* Botones */
.btn-cko {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border: none; border-radius: 999px; padding: 12px 22px; font-weight: 600; cursor: pointer;
  font-size: .98rem; transition: .2s; text-decoration: none;
}
.btn-primary-cko { background: var(--primary); color: #fff; }
.btn-primary-cko:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 6px 16px rgba(6,28,107,.28); }
.btn-accent-cko { background: var(--accent); color: #fff; }
.btn-accent-cko:hover { background: var(--accent-dark); transform: translateY(-2px); box-shadow: 0 6px 16px rgba(7,186,134,.28); }
.btn-ghost-cko { background: transparent; color: var(--primary); border: 1px solid var(--line); }
.btn-ghost-cko:hover { background: #f3f5fa; }
.btn-cko[disabled] { opacity: .5; cursor: not-allowed; transform: none; box-shadow: none; }
.btn-block { width: 100%; }

/* Producto chip + selector */
.prod-chip {
  display: inline-flex; align-items: center; gap: 8px; background: rgba(7,186,134,.1);
  color: var(--accent-dark); font-size: .85rem; font-weight: 600; padding: 6px 12px; border-radius: 999px;
}
.prod-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px,1fr)); gap: 10px; margin-bottom: 18px; }
.prod-card {
  border: 1.5px solid var(--line); border-radius: 14px; padding: 14px; cursor: pointer; text-align: center; transition: .15s; background: #fff;
}
.prod-card:hover { border-color: var(--accent); }
.prod-card.sel { border-color: var(--primary); box-shadow: 0 8px 20px rgba(6,28,107,.12); }
.prod-card i { font-size: 1.6rem; color: var(--primary); }
.prod-card .pn { display: block; font-weight: 700; color: var(--primary); margin-top: 6px; }

/* Toggle periodo */
.periodo-toggle { display: inline-flex; border: 1px solid var(--line); border-radius: 999px; overflow: hidden; font-size: .88rem; }
.periodo-toggle button { border: none; background: #fff; color: var(--muted); padding: 7px 16px; cursor: pointer; }
.periodo-toggle button.on { background: var(--primary); color: #fff; }

/* Planes */
.planes-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px,1fr)); gap: 12px; }
.plan-card {
  border: 1.5px solid var(--line); border-radius: 16px; padding: 18px; cursor: pointer; position: relative; transition: .15s; background: #fff;
}
.plan-card:hover { border-color: var(--accent); transform: translateY(-3px); }
.plan-card.sel { border: 2px solid var(--primary); box-shadow: 0 12px 26px rgba(6,28,107,.14); }
.plan-card .badge-rec {
  position: absolute; top: -11px; left: 16px; background: var(--brand-gradient);
  color: #fff; font-size: .68rem; font-weight: 700; padding: 4px 10px; border-radius: 999px;
}
.plan-card .pname { font-weight: 700; color: var(--primary); }
.plan-card .pprice { font-size: 2rem; font-weight: 800; color: var(--primary); line-height: 1.05; margin: 4px 0; }
.plan-card .pprice small { font-size: .8rem; color: var(--muted); font-weight: 400; }
.plan-card ul { list-style: none; padding: 0; margin: 10px 0 0; font-size: .86rem; color: #444; display: flex; flex-direction: column; gap: 5px; }
.plan-card ul li i { color: var(--accent); margin-right: 6px; }
.plan-card .ahorro { display: inline-block; margin-top: 8px; font-size: .75rem; color: var(--accent-dark); background: rgba(7,186,134,.12); padding: 2px 8px; border-radius: 999px; }

/* Cupón */
.cupon-row { display: flex; gap: 8px; margin-top: 16px; }
.cupon-row .f-control { flex: 1; }
.chip-ok { display: inline-flex; align-items: center; gap: 6px; margin-top: 8px; font-size: .82rem; color: var(--accent-dark); background: rgba(7,186,134,.12); padding: 4px 10px; border-radius: 999px; }
.chip-err { display: inline-flex; align-items: center; gap: 6px; margin-top: 8px; font-size: .82rem; color: #b02a2a; background: rgba(176,42,42,.1); padding: 4px 10px; border-radius: 999px; }

/* PIN */
.pin-boxes { display: flex; gap: 8px; justify-content: center; margin: 8px 0 4px; }
.pin-boxes input {
  width: 48px; height: 56px; text-align: center; font-size: 1.5rem; font-weight: 700;
  border: 1.5px solid var(--line); border-radius: 12px; color: var(--primary);
}
.pin-boxes input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(7,186,134,.15); }
.pin-resend { text-align: center; font-size: .85rem; color: var(--muted); margin-top: 10px; }
.pin-resend a { color: var(--accent-dark); cursor: pointer; }

/* Resumen */
.resumen { position: sticky; top: 84px; }
.resumen h4 { color: var(--primary); font-weight: 700; margin: 0 0 12px; font-size: 1.05rem; }
.resumen .linea { display: flex; justify-content: space-between; font-size: .92rem; color: #444; margin-bottom: 8px; }
.resumen .linea.desc { color: var(--accent-dark); }
.resumen .linea.muted { color: var(--muted); font-size: .85rem; }
.resumen hr { border: none; border-top: 1px solid var(--line); margin: 10px 0; }
.resumen .total { display: flex; justify-content: space-between; font-size: 1.25rem; font-weight: 800; color: var(--primary); }
.resumen .trust { display: flex; align-items: center; justify-content: center; gap: 6px; margin-top: 12px; font-size: .78rem; color: var(--muted); }

/* Nav de pasos */
.paso-nav { display: flex; justify-content: space-between; gap: 10px; margin-top: 20px; }

@media (max-width: 820px) {
  .cko-grid { grid-template-columns: 1fr; }
  .resumen { position: static; }
  .f-row { grid-template-columns: 1fr; }
}