:root {
  --bg: #0f172a;
  --card: #1e293b;
  --accent: #38bdf8;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --error: #f87171;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: radial-gradient(1200px 600px at 50% -10%, #1e293b, var(--bg));
  color: var(--text);
}
.login-wrap {
  margin: auto;
  width: 100%;
  max-width: 360px;
  padding: 24px;
}
.login-card {
  background: var(--card);
  border: 1px solid rgba(148, 163, 184, 0.15);
  border-radius: 16px;
  padding: 32px 28px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.45);
  display: flex;
  flex-direction: column;
}
h1 { margin: 0; font-size: 1.6rem; text-align: center; }
.subtitle { margin: 4px 0 22px; text-align: center; color: var(--muted); font-size: 0.9rem; }
label { font-size: 0.82rem; color: var(--muted); margin-bottom: 6px; }
input {
  background: #0f172a;
  border: 1px solid rgba(148, 163, 184, 0.25);
  border-radius: 10px;
  color: var(--text);
  padding: 11px 12px;
  margin-bottom: 16px;
  font-size: 1rem;
  outline: none;
}
input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.2); }
button {
  margin-top: 4px;
  background: var(--accent);
  color: #04283b;
  border: 0;
  border-radius: 10px;
  padding: 12px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
}
button:hover { filter: brightness(1.05); }
.error {
  background: rgba(248, 113, 113, 0.12);
  border: 1px solid rgba(248, 113, 113, 0.4);
  color: var(--error);
  border-radius: 10px;
  padding: 10px 12px;
  margin: 0 0 18px;
  font-size: 0.88rem;
  text-align: center;
}