:root{
  --bg: #0b0f14;         /* dark base */
  --panel: #101620;      /* card bg */
  --muted: #9fb3c8;
  --text: #e6eef7;
  --brand: #76e4f7;      /* accent cyan */
  --brand-2: #8cffc1;    /* accent green */
  --danger: #ff6b6b;
  --warn: #ffd166;
  --ok: #06d6a0;
  --border: rgba(255,255,255,.08);
  --ring: rgba(118,228,247,.32);
  --shadow: 0 10px 30px rgba(0,0,0,.35);
  --radius: 16px;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  background: radial-gradient(1200px 700px at 10% -10%, rgba(118,228,247,.12), transparent 50%),
              radial-gradient(1000px 600px at 90% 10%, rgba(140,255,193,.10), transparent 50%),
              var(--bg);
  color: var(--text);
  display:flex;
  min-height:100%;
}

.container{
  margin: 0 auto;
  width: 100%;
  max-width: 960px;
  padding: 32px 20px 48px;
}

.nav{
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-bottom: 32px;
}
.brand{
  display:flex; align-items:center; gap:10px; text-decoration:none; color:var(--text);
}
.brand-logo{
  width: 36px; height: 36px; border-radius: 10px;
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  box-shadow: 0 6px 20px rgba(118,228,247,.35);
}
.brand-name{ font-weight:700; letter-spacing:.3px; font-size:18px; }

.btn{
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  color:#06131a; border:0; padding:12px 16px; font-weight:700;
  border-radius: 12px; cursor:pointer; transition: transform .06s ease, box-shadow .15s ease, opacity .2s ease;
  box-shadow: 0 8px 24px rgba(118,228,247,.25);
}
.btn:hover{ transform: translateY(-1px); }
.btn:disabled{ opacity:.55; cursor:not-allowed; transform:none; }
.btn-secondary{
  background: transparent; color: var(--text); border: 1px solid var(--border);
  box-shadow:none;
}
.btn-danger{
  background: linear-gradient(135deg, #ff8e8e, #ff6b6b);
  color:#2b0000;
}

.card{
  background: linear-gradient(180deg, rgba(255,255,255,.02), transparent 30%) , var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
}

.grid{
  display:grid; gap: 18px;
}
@media (min-width: 720px){
  .grid-2{ grid-template-columns: 1.2fr 1fr; }
}

h1{ margin: 0 0 6px; font-size: 28px; }
h2{ margin: 0 0 12px; font-size: 18px; color: var(--muted); font-weight:600; }

.label{ font-size:13px; color: var(--muted); margin-bottom:6px; display:block; }
.input{
  width:100%; padding:12px 14px; border-radius:12px; border:1px solid var(--border); background:#0b121a; color:var(--text);
  outline: none; transition: box-shadow .15s ease, border-color .15s ease;
}
.input:focus{ box-shadow: 0 0 0 6px var(--ring); border-color: rgba(118,228,247,.45); }
.row{ display:flex; gap:10px; align-items:center; }

.meta{
  display:grid; gap:10px; grid-template-columns: 1fr 1fr; margin-top: 10px;
}
.kv{ background:#0c141c; border:1px dashed var(--border); border-radius:12px; padding:10px 12px; }
.kv b{ font-size:12px; color: var(--muted); font-weight:600; display:block; margin-bottom:4px; }
.kv code{ font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace; color: #b8ffec; }

.alert{
  padding: 12px 14px; border-radius: 12px; border: 1px solid var(--border); margin-top: 10px;
  background: #0c141c;
}
.alert.ok{ border-color: rgba(6,214,160,.35); background: linear-gradient(180deg, rgba(6,214,160,.12), transparent), #0c141c; }
.alert.err{ border-color: rgba(255,107,107,.35); background: linear-gradient(180deg, rgba(255,107,107,.12), transparent), #0c141c; }
.alert.warn{ border-color: rgba(255,209,102,.35); background: linear-gradient(180deg, rgba(255,209,102,.12), transparent), #0c141c; }
.alert .title{ font-weight:700; margin-bottom:4px; }

.code-pill{
  display:inline-block; padding:10px 14px; background:#081018; border:1px solid var(--border);
  border-radius: 14px; font-size: 22px; font-weight: 800; letter-spacing: .5px;
}

.footer{
  margin-top: 40px; color: var(--muted); font-size: 12px; text-align:center; opacity:.8;
}

/* subtle animated glow on focusable card */
.card.glow:focus-within{
  box-shadow: 0 8px 40px rgba(118,228,247,.18);
  border-color: rgba(118,228,247,.25);
}

/* utility */
.mt-8{ margin-top: 8px; }
.mt-12{ margin-top: 12px; }
.mt-16{ margin-top: 16px; }
.mt-24{ margin-top: 24px; }
.center{ display:flex; align-items:center; justify-content:center; }