:root { color-scheme: light dark; }
* { box-sizing: border-box; }

body{
  margin:0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, "Helvetica Neue", Arial, sans-serif;
  line-height:1.5;
  background:#0b1220;
  color:#e8eefc;
}

.wrap{
  max-width: 900px;
  margin: 0 auto;
  padding: 28px 18px 60px;
}

header{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:12px;
  margin-bottom:18px;
}

.badge{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:10px 14px;
  border-radius:999px;
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.12);
  font-weight: 600;
}

.dot{
  width:10px;
  height:10px;
  border-radius:999px;
  background:#58d68d;
  box-shadow: 0 0 0 4px rgba(88,214,141,.15);
}

nav{
  color: rgba(232,238,252,.75);
  font-size: .95rem;
}

a{ color:#a7c7ff; text-decoration:none; }
a:hover{ text-decoration:underline; }

main{
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.12);
  border-radius:18px;
  padding:22px 18px;
  backdrop-filter: blur(6px);
}

h1{
  font-size: clamp(1.4rem, 3vw, 2rem);
  margin: 0 0 10px;
}

h2{
  font-size: 1.05rem;
  margin: 0 0 10px;
}

p{
  margin: 0 0 12px;
  color: rgba(232,238,252,.92);
  text-align: justify;
  hyphens: auto;
}

.muted{
  color: rgba(232,238,252,.75);
  font-size: .95rem;
  text-align: justify;
  hyphens: auto;
}

.grid{
  display:grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap:14px;
  margin-top:14px;
}

.card{
  background: rgba(0,0,0,.20);
  border: 1px solid rgba(255,255,255,.12);
  border-radius:14px;
  padding:14px 14px;
}

.card p{ text-align: justify; hyphens: auto; }

.mono{
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

label{
  display:block;
  margin-top:10px;
  font-weight: 600;
}

input, textarea{
  width:100%;
  margin-top:6px;
  padding:10px 12px;
  border-radius:10px;
  border: 1px solid rgba(255,255,255,.18);
  background: rgba(0,0,0,.22);
  color: #e8eefc;
  outline: none;
}

textarea{ resize: vertical; min-height: 140px; }

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:10px 14px;
  border-radius:12px;
  border: 1px solid rgba(255,255,255,.18);
  background: rgba(255,255,255,.10);
  color:#e8eefc;
  cursor:pointer;
  font-weight: 700;
}

.btn-primary{
  background:#2b6cff;
  border-color: rgba(43,108,255,.55);
}

.btn:disabled{ opacity:.65; cursor:not-allowed; }

.row{
  display:flex;
  gap:10px;
  flex-wrap: wrap;
  margin-top: 10px;
}

.topbtn{
  display:inline-flex;
  margin-bottom: 14px;
}

.alert{
  padding: 12px 12px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(0,0,0,.18);
}

footer{
  margin-top:18px;
  color: rgba(232,238,252,.70);
  font-size: .9rem;
}

@media (max-width: 420px){
  header{ flex-direction: column; align-items: flex-start; }
}