:root {
  --lime: #d9e82b;
  --orange: #f7941d;
  --bg: #121213;
  --card: #242426;
  --text: #ffffff;
  --muted: #a1a1a6;
  --red: #e5254b;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; background: var(--bg); color: var(--text); }
body {
  font: 17px/1.5 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", system-ui, sans-serif;
  display: flex; align-items: center; justify-content: center;
  min-height: 100vh; padding: 24px 16px;
  background: radial-gradient(60% 50% at 50% 30%, rgba(247,148,29,.16), transparent 70%), var(--bg);
}
main { width: 100%; max-width: 420px; text-align: center; }
.logo { width: 120px; height: auto; margin: 0 auto 24px; display: block; }
h1 { font: 700 28px/1.2 -apple-system, "SF Pro Display", system-ui, sans-serif; margin: 0 0 8px; }
p { color: var(--muted); margin: 0 0 24px; }
.card { background: var(--card); border-radius: 24px; padding: 24px; text-align: left; }
.card p { margin-bottom: 16px; }
.btn {
  display: block; width: 100%; padding: 16px; border: 0; border-radius: 999px;
  background: linear-gradient(90deg, var(--lime), var(--orange)); color: #000;
  font: 600 17px/1 -apple-system, system-ui, sans-serif; text-align: center; text-decoration: none; cursor: pointer;
}
.btn:disabled { opacity: .5; cursor: default; }
.link { display: inline-block; margin-top: 16px; color: var(--lime); text-decoration: none; font-weight: 600; }
label { display: block; font-size: 15px; color: var(--muted); margin: 0 0 6px; }
input {
  width: 100%; padding: 14px 16px; margin: 0 0 16px; border-radius: 14px;
  border: 1px solid rgba(255,255,255,.12); background: #1b1b1d; color: var(--text); font-size: 17px;
}
input:focus { outline: 2px solid var(--lime); border-color: transparent; }
.ok { color: var(--lime); }
.error { color: var(--red); }
.small { font-size: 14px; color: var(--muted); }
.hidden { display: none; }