*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: #0f1117;
  color: #e2e8f0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
.auth-box {
  background: #1a1d27;
  border: 1px solid #2e3350;
  border-radius: 14px;
  padding: 40px 36px;
  width: 100%;
  max-width: 400px;
}
h1 { font-size: 1.4rem; margin-bottom: 6px; }
h1 span { color: #5b7cf6; }
.subtitle { font-size: 12px; color: #64748b; margin-bottom: 28px; }
label { display: block; font-size: 12px; color: #94a3b8; margin-bottom: 6px; font-weight: 600; }
input[type=text],
input[type=email],
input[type=password] {
  width: 100%;
  background: #21253a;
  border: 1px solid #2e3350;
  color: #e2e8f0;
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 14px;
  font-family: inherit;
  margin-bottom: 16px;
  outline: none;
  transition: border-color .15s;
}
input:focus { border-color: #5b7cf6; }
button {
  width: 100%;
  background: #5b7cf6;
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 10px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  transition: background .15s;
  margin-top: 4px;
}
button:hover { background: #4a6ee0; }
.error {
  background: #450a0a;
  border: 1px solid #7f1d1d;
  color: #fca5a5;
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 13px;
  margin-bottom: 16px;
}
.success {
  background: #052e16;
  border: 1px solid #166534;
  color: #86efac;
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 13px;
  margin-bottom: 16px;
}
.hint {
  font-size: 12px;
  color: #64748b;
  margin: -8px 0 16px;
}
.cancel-link {
  display: block;
  text-align: center;
  margin-top: 12px;
  color: #94a3b8;
  font-size: 13px;
  text-decoration: none;
}
.cancel-link:hover { color: #e2e8f0; }