:root {
  --bg1: #0b1220;
  --bg2: #16213a;
  --card: rgba(18, 26, 43, 0.96);
  --border: #23314f;
  --text: #e5e7eb;
  --muted: #94a3b8;
  --accent: #60a5fa;
  --danger: #f87171;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: Arial, sans-serif;
  color: var(--text);
  background: radial-gradient(circle at top, var(--bg2) 0%, var(--bg1) 55%, #09101d 100%);
}

.page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.card {
  width: 100%;
  max-width: 420px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px;
  box-shadow: 0 12px 40px rgba(0,0,0,.35);
}

.brand {
  font-size: 13px;
  color: var(--accent);
  letter-spacing: .15em;
  margin-bottom: 8px;
}

h1 {
  margin: 0 0 8px;
  font-size: 26px;
}

.subtitle {
  margin: 0 0 20px;
  color: var(--muted);
  font-size: 14px;
}

form { display: grid; gap: 14px; }

label { display: grid; gap: 8px; font-size: 14px; }

input {
  width: 100%;
  padding: 12px 14px;
  background: #0d1524;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 10px;
  outline: none;
}

input:focus { border-color: var(--accent); }

button {
  margin-top: 4px;
  padding: 12px 14px;
  border: 0;
  border-radius: 10px;
  background: var(--accent);
  color: #08111f;
  font-weight: 700;
  cursor: pointer;
}

button:disabled { opacity: .7; cursor: wait; }

.message {
  margin-top: 16px;
  padding: 12px 14px;
  border-radius: 10px;
  font-size: 14px;
  background: rgba(248,113,113,.1);
  border: 1px solid rgba(248,113,113,.35);
  color: #fecaca;
}

.hidden { display: none; }