/* styles.css */
:root{
  --bg:#0b1220;
  --surface:#0f172a;
  --line:#253047;
  --muted:#93a4bf;
  --text:#e7edf6;
  --accent:#0ea5e9;
  --accent-2:#22d3ee;
  --ok:#86efac;
  --radius:18px;
  --shadow:0 12px 30px rgba(0,0,0,.35), inset 0 1px 0 rgba(255,255,255,.03);
  --ring:0 0 0 2px color-mix(in oklab, var(--accent) 45%, transparent);
}

*{box-sizing:border-box}
html,body{height:100%}
html{color-scheme:dark}
body{
  margin:0;
  font:16px/1.5 ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,"Noto Sans","Helvetica Neue",Arial,"Apple Color Emoji","Segoe UI Emoji";
  color:var(--text);
  background:
    radial-gradient(1200px 800px at 20% -10%, rgba(34,211,238,.10), transparent 60%),
    radial-gradient(900px 700px at 110% 10%, rgba(14,165,233,.10), transparent 60%),
    var(--bg);
  overflow-x:hidden;
}

#bg{position:fixed; inset:0; z-index:-1; filter:contrast(105%) saturate(110%)}

.site-head,.site-foot{
  max-width:1040px; margin-inline:auto;
  padding:20px clamp(16px,4vw,28px);
  display:flex; align-items:center; justify-content:space-between; gap:12px;
}
.brand{display:inline-flex; align-items:center; gap:10px; font-weight:700; text-decoration:none; color:var(--text)}
.dot{width:10px; height:10px; border-radius:999px; background:linear-gradient(135deg,var(--accent),var(--accent-2)); box-shadow:0 0 16px var(--accent)}
.muted{color:var(--muted)}

.wrap{
  max-width:840px; margin:18px auto 48px;
  padding:0 clamp(16px,4vw,28px);
}

.card{
  position:relative;
  background:linear-gradient(180deg, color-mix(in oklab, var(--surface) 96%, transparent), color-mix(in oklab, var(--surface) 98%, transparent));
  border:1px solid rgba(148,163,184,.16);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  backdrop-filter:saturate(120%) blur(6px);
}

.hero{padding:32px clamp(20px,4vw,40px)}
.chip{
  position:absolute; top:14px; right:14px;
  padding:6px 10px; font-size:12px; text-transform:uppercase; letter-spacing:.4px;
  border-radius:999px; color:#cfefff;
  background:linear-gradient(135deg, rgba(14,165,233,.18), rgba(34,211,238,.18));
  border:1px solid rgba(56,189,248,.35);
}

.title{
  margin:8px 0 8px; text-align:center;
  font-size:clamp(32px,6vw,64px); line-height:1.05; letter-spacing:.2px;
  background:linear-gradient(180deg,#fff,#cfe9ff 60%,#86d8ff);
  -webkit-background-clip:text; background-clip:text; color:transparent;
}

.subtitle{
  margin:0 auto 22px; max-width:720px; text-align:center; color:var(--muted);
}

.mail{color:#c7eeff; text-decoration:underline dotted 1px}
.mail:hover{text-decoration:underline}

.form{display:grid; gap:16px; max-width:720px; margin-inline:auto}
.row{display:grid; grid-template-columns:1fr; gap:12px}
.field{display:grid; gap:8px}
.field span{font-size:13px; color:var(--muted)}
.help{color:var(--muted); font-size:12px}

input,textarea{
  width:100%; color:var(--text); background:#0b1220;
  border:1px solid rgba(148,163,184,.22);
  border-radius:12px; padding:12px 14px; outline:none;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.03);
}
input:focus,textarea:focus{border-color:rgba(56,189,248,.7); box-shadow:var(--ring)}

.actions{display:flex; gap:10px; flex-wrap:wrap; justify-content:center; margin-top:6px}
.btn{
  appearance:none; border:1px solid rgba(148,163,184,.22);
  padding:12px 16px; border-radius:12px; cursor:pointer; font-weight:600;
  background:#0b1220; color:var(--text);
  transition:transform .08s ease, border-color .2s ease, background .2s ease;
}
.btn:hover{transform:translateY(-1px)}
.btn.primary{
  border-color:rgba(56,189,248,.5);
  background:linear-gradient(135deg, rgba(14,165,233,.22), rgba(34,211,238,.22));
}

.hint{min-height:20px; text-align:center; font-size:13px; color:#a7e7ff}

.meta{
  margin-top:18px; padding-top:14px;
  border-top:1px dashed rgba(148,163,184,.16);
  display:flex; flex-wrap:wrap; gap:14px; justify-content:center;
}
.meta dt{color:var(--muted); font-size:12px; text-transform:uppercase; letter-spacing:.3px}
.meta dd{margin:0; font-weight:600}
.meta .ok{color:var(--ok)}
.code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono","Courier New",monospace; padding:.1em .45em; border-radius:8px; background:#0b1220; border:1px solid rgba(148,163,184,.16)}

.site-foot{gap:10px; color:var(--muted); font-size:14px; border-top:1px solid rgba(148,163,184,.12)}
:focus-visible{outline:2px solid var(--accent); outline-offset:2px; border-radius:10px}