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

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: #f5f5f5;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
}

.login-container {
  width: 100%;
  max-width: 420px;
  padding: 20px;
}

.login-card {
  background: #fff;
  border-radius: 16px;
  padding: 40px 36px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
  text-align: center;
}

.login-logo img {
  max-width: 180px;
  margin-bottom: 24px;
}

.login-card h1 {
  font-size: 22px;
  color: #333;
  margin-bottom: 8px;
  font-weight: 700;
}

.login-subtitle {
  font-size: 14px;
  color: #888;
  margin-bottom: 28px;
}

.btn-microsoft {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  width: 100%;
  padding: 12px;
  font-size: 15px;
  font-weight: 600;
  margin-top: 8px;
  background: #fff;
  color: #333;
  border: 2px solid #d1d5db;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s;
  font-family: inherit;
}

.btn-microsoft:hover:not(:disabled) {
  background: #f3f4f6;
  border-color: #9ca3af;
}

.btn-microsoft:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.login-divider {
  display: flex;
  align-items: center;
  margin: 24px 0;
  color: #999;
  font-size: 13px;
}

.login-divider::before,
.login-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: #e5e7eb;
}

.login-divider span {
  padding: 0 12px;
}

.login-card .form-group {
  text-align: left;
  margin-bottom: 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.login-card .form-group label {
  font-size: 13px;
  font-weight: 500;
  color: #555;
}

.login-card .form-group input {
  padding: 10px 12px;
  border: 1px solid #d1d5db;
  border-radius: 8px;
  font-size: 14px;
  font-family: inherit;
  transition: border-color 0.2s;
  background: #fff;
}

.login-card .form-group input:focus {
  outline: none;
  border-color: #ef6c26;
  box-shadow: 0 0 0 3px rgba(239, 108, 38, 0.1);
}

.btn-login {
  width: 100%;
  padding: 12px;
  font-size: 15px;
  font-weight: 600;
  margin-top: 8px;
  background: #ef6c26;
  color: #fff;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.2s;
  font-family: inherit;
}

.btn-login:hover {
  background: #d45a1e;
}

.login-error {
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: #dc2626;
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 13px;
  margin-bottom: 12px;
  text-align: left;
}