:root {
  --bg: #0b0d12;
  --text: #e8edf4;
  --muted: #9aa8b8;
  --accent: #9146ff;
}
* { box-sizing: border-box; }
html, body {
  margin: 0;
  min-height: 100%;
  font-family: "Segoe UI", Calibri, sans-serif;
  background: radial-gradient(1200px 600px at 20% -10%, #2a1f3d 0%, var(--bg) 55%);
  color: var(--text);
}
main {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 32px 20px;
  text-align: center;
}
.tag {
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  font-size: 12px;
  margin: 0 0 12px;
}
h1 { font-size: clamp(2.4rem, 6vw, 4.5rem); margin: 0; }
.lead { color: var(--muted); max-width: 28rem; }
a { color: var(--accent); }
.error {
  color: #ff8a8a;
  margin: 0 0 8px;
}
.card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  width: min(100%, 22rem);
  text-align: left;
  margin: 16px 0;
}
label { display: flex; flex-direction: column; gap: 6px; font-size: 14px; color: var(--muted); }
input, button {
  font: inherit;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid #2a3340;
  background: #171b22;
  color: var(--text);
}
button {
  background: #9146ff;
  border: 0;
  cursor: pointer;
  color: #fff;
}
.btn-twitch {
  display: block;
  text-align: center;
  text-decoration: none;
  background: #9146ff;
  color: #fff;
  padding: 12px 14px;
  border-radius: 8px;
}
.btn-twitch:hover { filter: brightness(1.08); }