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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Oxygen",
    "Ubuntu", "Cantarell", "Fira Sans", "Droid Sans", "Helvetica Neue",
    sans-serif;
  background: linear-gradient(135deg, #2e5585 0%, #00244e 100%);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.login-container {
  background: rgba(0, 52, 104, 0.95);
  backdrop-filter: blur(15px);
  border-radius: 20px;
  padding: 2.5rem;
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.3);
  text-align: center;
  max-width: 500px;
  width: 90%;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.logo {
  width: 410px;
  height: auto;
  margin-bottom: 2.5rem;
}

h1 {
  color: #ffffff;
  font-size: 1.6rem;
  margin-bottom: 0.3rem;
  font-weight: 700;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.subtitle {
  color: #e8f4fd;
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
  line-height: 1.6;
  font-weight: 400;
  padding: 0 3rem;
}

.microsoft-sign-in-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  background: linear-gradient(180deg, #ffffff 0%, #f0f0f0 100%);
  color: #1a1a1a;
  border: none;
  padding: 1rem 2.5rem;
  border-radius: 8px;
  font-size: 1.05rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.25s ease;
  width: 100%;
  max-width: 340px;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.25), 0 0 0 1px rgba(255, 255, 255, 0.1);
  font-family: "Segoe UI", -apple-system, BlinkMacSystemFont, sans-serif;
  letter-spacing: 0.01em;
}

.microsoft-sign-in-button:hover {
  background: linear-gradient(180deg, #ffffff 0%, #e8e8e8 100%);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.35),
    0 0 0 1px rgba(255, 255, 255, 0.15);
  transform: translateY(-1px);
}

.microsoft-sign-in-button:active {
  background: #e0e0e0;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
  transform: translateY(0);
}

.microsoft-sign-in-button svg {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
}

@media (max-width: 480px) {
  body {
    padding: 1rem;
  }

  .login-container {
    padding: 2rem;
    border-radius: 16px;
    max-width: none;
    width: 100%;
  }

  h1 {
    font-size: 1.3rem;
  }

  .logo {
    width: 220px;
  }

  .subtitle {
    font-size: 0.95rem;
  }

  .microsoft-sign-in-button {
    padding: 0.8rem 1.5rem;
    font-size: 0.95rem;
  }
}