*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body {
  min-height: 100vh;
  background: #080e1a;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: system-ui, -apple-system, sans-serif;
}
.card {
  background: #0f172a;
  border: 1px solid #1e293b;
  border-radius: 16px;
  padding: 48px 40px;
  width: 100%;
  max-width: 400px;
  box-shadow: 0 24px 64px rgba(0,0,0,.6);
}
.logo { text-align: center; margin-bottom: 32px; }
.logo-text { font-size: 28px; font-weight: 900; letter-spacing: -1px; color: #fff; }
.logo-text span { color: #a78bfa; }
.logo-sub { font-size: 11px; color: #475569; letter-spacing: .15em;
            text-transform: uppercase; margin-top: 4px; }
label { display: block; font-size: 11px; font-weight: 700; color: #64748b;
        text-transform: uppercase; letter-spacing: .08em; margin-bottom: 6px; }
input { width: 100%; padding: 12px 14px; background: #1e293b;
        border: 1px solid #334155; border-radius: 8px; color: #e2e8f0;
        font-size: 14px; outline: none; transition: border-color .15s; margin-bottom: 18px; }
input:focus { border-color: #a78bfa; }
.btn { width: 100%; padding: 13px; background: #7c3aed; color: #fff;
       font-size: 15px; font-weight: 800; border: none; border-radius: 8px;
       cursor: pointer; transition: background .15s; margin-top: 6px; }
.btn:hover { background: #6d28d9; }
.error { background: #450a0a; border: 1px solid #b91c1c; color: #fca5a5;
         padding: 10px 14px; border-radius: 8px; font-size: 13px; margin-bottom: 20px; }
.footer { text-align: center; margin-top: 28px; font-size: 11px; color: #1e293b; }