:root{
  --overlay: rgba(0,0,0,.55);
  --text: #1A1A1A;
  --btn: #e10600;
  --border: rgba(0,0,0,.35);
  --glass: rgba(255,255,255,.10);
}

*{ box-sizing:border-box; }
html,body{ height:100%; margin:0; }
body{
  font-family: Arial, Helvetica, sans-serif;
  color: var(--text);
  background:#000;
}

/* HERO */
.hero{
  min-height:100vh;
  background: url("../img/bg-gos.png") center/cover no-repeat;
  position:relative;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:24px;
  text-align:center;
  overflow:hidden;
}

/* Overlay + subtle cinematic gradient */
.hero::before{
  content:"";
  position:absolute; inset:0;
  background: linear-gradient(180deg, rgba(255,255,255,0.45), rgba(255,255,255,.65)), var(--overlay)
}

/* Light vignette */
.hero::after{
  content:"";
  position:absolute; inset:-20%;
  background: radial-gradient(circle at center, rgba(0,0,0,0) 40%, rgba(0,0,0,.45) 70%, rgba(0,0,0,.75) 100%);
  pointer-events:none;
  opacity:.9;
}

.content{
  position:relative;
  width:min(900px, 100%);
  display:grid;
  gap:18px;
  justify-items:center;
}

/* ELEMENTS */
.logo{ width:min(260px, 65vw); height:auto; }

.brand{ margin:0; line-height:1.15; }
.brand .name{ font-size:28px; font-weight:700; letter-spacing:.5px; }
.brand .tag{ font-size:16px; opacity:.9; }

.title{
  margin:8px 0 0;
  font-size:52px;
  letter-spacing:6px;
  font-weight:300;
}

.desc{
  margin:0;
  font-size:20px;
  opacity:.9;
}

/* FORM */
.subscribe{
  width:min(720px, 100%);
  display:grid;
  grid-template-columns: 1fr auto;
  gap:10px;
  margin-top:6px;
}

.subscribe input{
  height:46px;
  border-radius:6px;
  border:1px solid var(--border);
  background: var(--glass);
  color:var(--text);
  padding:0 14px;
  outline:none;
  backdrop-filter: blur(6px);
}

.subscribe input::placeholder{ color: rgba(0,0,0,.75); }

.subscribe button{
  height:46px;
  border-radius:6px;
  border:0;
  padding:0 18px;
  cursor:pointer;
  background: var(--btn);
  color:#fff;
  font-weight:700;
  letter-spacing:.5px;
  transform: translateZ(0);
  transition: transform .15s ease, filter .15s ease;
}

.subscribe button:hover{ transform: translateY(-1px); filter: brightness(1.05); }
.subscribe button:active{ transform: translateY(0px) scale(.99); }

/* CONTACT */
.contact{
  margin-top:6px;
  font-size:16px;
  opacity:.92;
  display:flex;
  gap:12px;
  flex-wrap:wrap;
  justify-content:center;
  align-items:center;
}

.contact a{
  color:#1A1A1A;
  text-decoration:none;
  border-bottom:1px solid rgba(255,255,255,.35);
}
.contact a:hover{ border-bottom-color: rgba(255,255,255,.9); }
.dot{ opacity:.65; }

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

/* LOAD ANIMATION (optimized: only opacity/transform) */
.preload .content > *{
  opacity:0;
  transform: translateY(14px);
}

body.is-ready .content > *{
  opacity:1;
  transform: translateY(0);
  transition: transform .7s ease, opacity .7s ease;
}

/* Stagger via nth-child */
body.is-ready .content > *:nth-child(1){ transition-delay: .05s; }
body.is-ready .content > *:nth-child(2){ transition-delay: .12s; }
body.is-ready .content > *:nth-child(3){ transition-delay: .19s; }
body.is-ready .content > *:nth-child(4){ transition-delay: .26s; }
body.is-ready .content > *:nth-child(5){ transition-delay: .33s; }
body.is-ready .content > *:nth-child(6){ transition-delay: .40s; }

/* Mobile */
@media (max-width: 520px){
  .title{ font-size:34px; letter-spacing:4px; }
  .subscribe{ grid-template-columns: 1fr; }
  .subscribe button{ width:100%; }
}