:root{
  --bg: #01305c;
  --accent: #18a6d1; /* azul claro para contrastes */
  --white: #ffffff;
  --glass: rgba(255,255,255,0.06);
  --radius: 12px;
  --max-width: 960px;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: "Poppins", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
  background: var(--bg);
  color: var(--white);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:32px;
}

/* Contenedor centrado con máximo ancho */
.container{
  width:100%;
  max-width:var(--max-width);
  margin-inline:auto;
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(0,0,0,0.02));
  border-radius:16px;
  padding:28px;
  display:grid;
  grid-template-rows:auto 1fr auto;
  gap:18px;
  align-items:center;
  box-shadow: 0 8px 30px rgba(0,0,0,0.35);
}

/* Logo */
.brand{
  display:flex;
  justify-content:center;
}
.logo{
  max-width:360px;
  width:40%;
  height:auto;
  object-fit:contain;
  filter: drop-shadow(0 6px 18px rgba(0,0,0,0.45));
}

/* Contenido */
.content{
  text-align:center;
  padding: 8px 12px 0;
}

.title{
  margin:10px 0 6px;
  font-size:clamp(1.6rem, 3.6vw, 2.4rem);
  letter-spacing:0.02em;
  font-weight:700;
}

.subtitle{
  margin:0 0 18px;
  color: rgba(255,255,255,0.85);
  font-weight:400;
}

/* Cuenta atrás */
.countdown{
  display:flex;
  gap:12px;
  justify-content:center;
  margin-bottom:18px;
  color:var(--white);
}

.countdown > div{
  background: var(--glass);
  padding:10px 14px;
  border-radius:10px;
  min-width:76px;
  display:flex;
  flex-direction:column;
  align-items:center;
}

.countdown span{
  font-weight:700;
  font-size:1.1rem;
  display:block;
}
.countdown small{
  font-size:0.7rem;
  opacity:0.9;
}

/* Form */
.subscribe{
  display:flex;
  gap:10px;
  justify-content:center;
  margin:18px 0;
  flex-wrap:wrap;
}

.subscribe input[type="email"]{
  padding:12px 14px;
  border-radius:999px;
  border:1px solid rgba(255,255,255,0.08);
  min-width:260px;
  max-width:420px;
  background:transparent;
  color:var(--white);
  outline:none;
}

.subscribe input::placeholder{
  color:rgba(255,255,255,0.6);
}

.btn{
  background: linear-gradient(180deg,var(--accent), #0fa7c8);
  color:var(--white);
  padding:12px 18px;
  border-radius:999px;
  border: none;
  cursor:pointer;
  font-weight:600;
  transition: transform .12s ease, box-shadow .12s;
}

.btn:active{ transform:translateY(1px) }
.btn:focus{ box-shadow: 0 0 0 4px rgba(24,166,209,0.18); outline:none }

/* message */
.msg{
  min-height:1.1em;
  margin:8px 0 0;
  color: #d9f6ff;
  font-weight:600;
}

/* socials */
.social-note{ margin-top:14px; opacity:0.9 }
.socials{ display:flex; gap:10px; justify-content:center; margin-top:8px }
.social{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:44px;
  height:36px;
  border-radius:8px;
  background:rgba(255,255,255,0.04);
  color:var(--white);
  text-decoration:none;
  font-weight:600;
}

/* footer */
.footer{ text-align:center; opacity:0.8; padding:6px 0 0; font-size:0.85rem }

/* Small accessibility helper */
.sr-only{
  position:absolute!important;
  height:1px; width:1px;
  overflow:hidden;
  clip:rect(1px,1px,1px,1px);
  white-space:nowrap;
}

/* Responsive tweaks */
@media (min-width:900px){
  .container{
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto 1fr;
    gap:28px;
    padding:36px;
    align-items:center;
  }
  .brand{ grid-column: 1 / span 2; }
  .content{ grid-column: 1 / span 2; }
  .logo{ max-width:420px; width:100% }
}