:root{
  --bg:#0f1115;
  --surface:rgba(20,22,28,.70);
  --text:#e8eaf0;
  --muted:#a5adbc;
  --accent1:#66e4ff;
  --accent2:#9b7cff;
  --accent3:#6dffa7;
  --shadow:0 10px 40px rgba(0,0,0,.6);
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  color:var(--text);
  background: var(--bg) url("/img/bg.jpg") center/cover no-repeat fixed;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
}
/* NAVBAR */
.navbar{
  position:fixed; top:16px; left:50%; transform:translateX(-50%);
  width:min(1100px, calc(100% - 32px));
  background: linear-gradient(135deg, rgba(15,17,21,.9), rgba(10,12,16,.75));
  border:1px solid rgba(255,255,255,.08);
  border-radius:16px;
  padding:10px 14px;
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow);
  display:flex; align-items:center; justify-content:space-between;
}
.brand{
  font-weight:800; letter-spacing:.3px; font-size:20px;
  background: linear-gradient(90deg, var(--accent1), var(--accent2));
  -webkit-background-clip:text; background-clip:text; color:transparent;
}
.nav-right{display:flex; align-items:center; gap:10px}
.nav-link{
  color:var(--text); text-decoration:none; padding:10px 12px;
  border:1px solid transparent; border-radius:12px; transition:.2s;
}
.nav-link:hover{ background: rgba(255,255,255,.06); border-color: rgba(255,255,255,.08) }
/* LAYOUT */
.hero{ min-height:100%; display:grid; place-items:center; padding:96px 18px 32px }
.card{
  width:min(880px,92vw);
  background: var(--surface);
  border:1px solid rgba(255,255,255,.08);
  border-radius:22px;
  padding:40px 36px;
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow);
  text-align:center;
}
.title{ font-size:clamp(42px,6vw,84px); line-height:1.05; margin:6px 0 10px; font-weight:900; letter-spacing:.2px;
  background: linear-gradient(90deg, var(--accent1), var(--accent2), var(--accent3));
  -webkit-background-clip:text; background-clip:text; color:transparent;
}
.subtitle{ margin:0 auto 10px; color:var(--muted); max-width:720px; font-size:clamp(14px,2.4vw,18px) }
.actions{ display:flex; gap:12px; justify-content:center; margin-top:18px; flex-wrap:wrap }
.btn{
  display:inline-block; text-decoration:none; color:var(--text); padding:12px 16px;
  border-radius:14px; border:1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.06); transition:.2s; box-shadow:0 6px 20px rgba(0,0,0,.25)
}
.btn:hover{ transform:translateY(-1px); background: rgba(255,255,255,.12) }
.btn.primary{ background: linear-gradient(135deg, rgba(102,228,255,.15), rgba(155,124,255,.15)); border-color: rgba(155,124,255,.35) }
/* FORM */
.form{ display:grid; gap:12px; margin-top:10px }
.input{
  width:100%; padding:12px 14px; border-radius:12px; border:1px solid rgba(255,255,255,.14);
  background: rgba(0,0,0,.25); color:var(--text); outline:none; transition:.2s
}
.input:focus{ border-color: rgba(155,124,255,.55); box-shadow:0 0 0 4px rgba(155,124,255,.18) }
.helper{ color:var(--muted); font-size:13px; margin-top:4px }