:root{
  --bg0:#07080b;
  --bg1:#0b0d12;
  --card0:rgba(255,255,255,.06);
  --card1:rgba(255,255,255,.04);
  --border:rgba(255,255,255,.12);

  --txt:#eef2ff;
  --muted:rgba(238,242,255,.72);

  --accent:#7c5cff;
  --accent2:#22d3ee;

  --shadow: 0 18px 70px rgba(0,0,0,.55);
  --shadow2: 0 10px 30px rgba(0,0,0,.35);

  --radius:18px;
}

*{box-sizing:border-box}

html,body{height:100%}

body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color:var(--txt);
  background:
    radial-gradient(900px 420px at 12% 10%, rgba(124,92,255,.22), transparent 60%),
    radial-gradient(700px 380px at 88% 20%, rgba(34,211,238,.18), transparent 55%),
    radial-gradient(900px 520px at 50% 120%, rgba(124,92,255,.10), transparent 55%),
    linear-gradient(180deg, var(--bg0), var(--bg1) 55%, #07080b);
}

/* Subtle grid */
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  background:
    linear-gradient(to right, rgba(255,255,255,.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,.03) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(800px 420px at 50% 0%, #000 60%, transparent 100%);
  opacity:.55;
}

.wrap{
  max-width: 960px;
  margin: 54px auto;
  padding: 0 18px;
}

.card{
  position:relative;
  border:1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 18px 18px;
  background:
    linear-gradient(180deg, var(--card0), var(--card1));
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: var(--shadow);
  overflow:hidden;
}

.card::after{
  content:"";
  position:absolute;
  inset:-2px;
  background:
    radial-gradient(600px 180px at 15% 0%, rgba(124,92,255,.20), transparent 60%),
    radial-gradient(500px 160px at 85% 0%, rgba(34,211,238,.16), transparent 60%);
  opacity:.55;
  pointer-events:none;
}

.card > *{position:relative; z-index:1}

h1{
  margin:0 0 8px;
  font-size: 26px;
  letter-spacing:-.02em;
}

.muted{
  margin:0 0 14px;
  color:var(--muted);
  line-height:1.55;
  font-size:14px;
}

.label{
  display:block;
  margin: 10px 0 8px;
  color: rgba(238,242,255,.78);
  font-size: 13px;
}

.textarea{
  width:100%;
  min-height: 120px;
  resize: vertical;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(0,0,0,.28);
  color: var(--txt);
  padding: 12px 12px;
  outline: none;
  font-size: 14px;
  line-height: 1.5;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.06);
  transition: border-color .18s ease, box-shadow .18s ease, transform .18s ease;
}

.textarea::placeholder{
  color: rgba(238,242,255,.45);
}

.textarea:focus{
  border-color: rgba(124,92,255,.55);
  box-shadow:
    0 0 0 4px rgba(124,92,255,.15),
    inset 0 1px 0 rgba(255,255,255,.06);
}

.row{
  display:flex;
  gap:10px;
  align-items:center;
  flex-wrap:wrap;
  margin-top: 12px;
}

.btn{
  border: 1px solid rgba(255,255,255,.16);
  background: rgba(255,255,255,.05);
  color: var(--txt);
  padding: 10px 14px;
  border-radius: 14px;
  cursor: pointer;
  font-weight: 600;
  letter-spacing: .01em;
  transition: transform .12s ease, border-color .12s ease, background .12s ease, box-shadow .12s ease;
  box-shadow: var(--shadow2);
}

.btn:hover{
  transform: translateY(-1px);
  border-color: rgba(255,255,255,.24);
  background: rgba(255,255,255,.07);
}

.btn:active{
  transform: translateY(0px);
  box-shadow: 0 6px 18px rgba(0,0,0,.35);
}

.btn.primary{
  border-color: transparent;
  background:
    linear-gradient(135deg, rgba(124,92,255,.95), rgba(34,211,238,.85));
  color: #05060a;
  box-shadow:
    0 18px 40px rgba(124,92,255,.20),
    0 18px 40px rgba(34,211,238,.14);
}

.btn.primary:hover{
  filter: brightness(1.03);
}

.check{
  display:flex;
  align-items:center;
  gap:8px;
  color: rgba(238,242,255,.72);
  font-size: 13px;
  margin-left:auto;
  user-select:none;
}

.check input{
  width:16px;
  height:16px;
  accent-color: var(--accent);
}

.hint{
  margin: 12px 0 0;
  color: rgba(238,242,255,.68);
  font-size: 13px;
  line-height:1.55;
}

.mono{
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.12);
  padding: 2px 6px;
  border-radius: 10px;
}

a{color:inherit}

@media (max-width:520px){
  .wrap{margin:34px auto}
  h1{font-size:22px}
  .check{margin-left:0}
}