:root{
  --bg-start: #071022;
  --bg-end: #071426;
  --card-bg: rgba(255,255,255,0.03);
  --card-border: rgba(255,255,255,0.04);
  --accent-1: #7c3aed;
  --accent-2: #06b6d4;
  --text: #ffffff;
  --muted: rgba(230,238,248,0.75);
}

* { box-sizing: border-box; }

html, body {
  height: 100%;
  margin: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto, Arial;
  background: linear-gradient(180deg, var(--bg-start) 0%, var(--bg-end) 60%);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.card {
  width: 100%;
  max-width: 420px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  padding: 20px;
  border-radius: 12px;
  box-shadow: 0 8px 30px rgba(2,6,23,0.6);
}

h2 {
  margin: 0 0 12px 0;
  font-size: 20px;
}

label {
  display: block;
  font-size: 0.95rem;
  margin-top: 10px;
  color: var(--text);
  opacity: 0.95;
}

input[type="text"],
input[type="password"] {
  width: 100%;
  padding: 12px;
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,0.08);
  background: rgba(255,255,255,0.02);
  color: var(--text);
  font-size: 15px;
  margin-top: 6px;
}

button {
  width: 100%;
  margin-top: 16px;
  padding: 12px;
  border-radius: 10px;
  border: 0;
  background: linear-gradient(90deg, var(--accent-1), var(--accent-2));
  color: var(--text);
  font-weight: 600;
  font-size: 16px;
  cursor: pointer;
}

.error {
  background: #4b1b1b;
  color: #ffdede;
  padding: 10px;
  border-radius: 8px;
  margin-top: 12px;
  border: 1px solid rgba(255,0,0,0.12);
}

.hint {
  font-size: 13px;
  color: var(--muted);
  margin-top: 8px;
  text-align: center;
}

.footer-note {
  font-size: 12px;
  color: rgba(230,238,248,0.6);
  margin-top: 12px;
  text-align: center;
}

@media (max-width:420px) {
  .card { padding: 16px; }
  input[type="text"],
  input[type="password"] { padding: 11px; }
  button { padding: 12px; }
}