*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: #1a1f2e;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #e2e8f0;
}

.login-box {
  background: #242938;
  border: 1px solid #2d3448;
  border-radius: 8px;
  padding: 2.5rem 2rem;
  width: 100%;
  max-width: 380px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
}

.logo {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: #00a8e8;
  margin-bottom: 0.5rem;
}

h1 {
  font-size: 1.5rem;
  font-weight: 600;
  color: #f1f5f9;
  margin-bottom: 1.75rem;
}

.error {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  border-radius: 5px;
  color: #fca5a5;
  font-size: 0.875rem;
  padding: 0.6rem 0.85rem;
  margin-bottom: 1.25rem;
}

form {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

label {
  font-size: 0.8rem;
  font-weight: 500;
  color: #94a3b8;
  letter-spacing: 0.03em;
  margin-top: 0.6rem;
}

input[type="text"],
input[type="password"] {
  width: 100%;
  padding: 0.6rem 0.75rem;
  background: #1a1f2e;
  border: 1px solid #2d3448;
  border-radius: 5px;
  color: #e2e8f0;
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.15s;
}

input:focus {
  border-color: #00a8e8;
  box-shadow: 0 0 0 3px rgba(0, 168, 232, 0.12);
}

button[type="submit"] {
  margin-top: 1.25rem;
  padding: 0.65rem;
  background: #00a8e8;
  color: #fff;
  font-size: 0.95rem;
  font-weight: 600;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  transition: background 0.15s, opacity 0.15s;
}

button[type="submit"]:hover:not(:disabled) {
  background: #0090c8;
}